Metadata: Identification_Information: Citation: Citation_Information: Originator: Renee K. Takesue Originator: Leticia P. Hallas Originator: Amy E. East Publication_Date: 20251211 Title: Charcoal counts, stable isotopes, and elemental chemistry of particulate materials after the 2020 CZU Wildfire Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI: 10.5066/P13QWYFV Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P13QWYFV Larger_Work_Citation: Citation_Information: Originator: Renee K. Takesue Originator: Leticia P. Hallas Originator: Pamela L. Campbell-Swarzenski Originator: Nancy G. Prouty Originator: Amy E. East Publication_Date: 2025 Title: Compositions of ash, soil, sediment, water, and biota after the 2020 CZU Lightning Complex Wildfire, Santa Cruz Mountains, CA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13QWYFV Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Takesue, R.K., Hallas, L.P., Campbell-Swarzenski, P.L., Prouty, N.G., and East, A.E., 2025, Compositions of ash, soil, sediment, water, and biota after the 2020 CZU Lightning Complex Wildfire, Santa Cruz Mountains, CA: U.S. Geological Survey data release, https://doi.org/10.5066/P13QWYFV Online_Linkage: https://doi.org/10.5066/P13QWYFV Description: Abstract: After the CZU Wildfire in August 2020, stream sediment (7 burned, 1 unburned drainages), airborne ash, in situ ash, and regolith were collected from August 2020 to August 2023 to characterize wildfire effects. Solid-phase parameters include sand-sized charcoal counts, total carbon (TC), total inorganic carbon (TIC), total organic carbon (TOC), bulk stable carbon 13/12 isotope ratios (d13C), bulk stable nitrogen 15/14 isotope ratios (d15N), and concentrations of 60 elements in the less than 63 micron fine fraction. Purpose: Ash, soil, and sediment were collected and characterized immediately post-wildfire to quantify potential environmental and public hazards from wildfire-related chemicals. Repeated collections at regular intervals over three years showed temporal changes of in situ wildfire-related properties or changes related to transport of wildfire materials in coastal watersheds and streams. Airborne wildfire particulates were collected downwind in Santa Cruz up to one month post-fire. Sediment provenance in Scott Creek watershed and three of its tributaries was determined from geochemical fingerprinting of granitic rocks on Ben Lomond Mountain. In combination, these parameters show how the chemistry of hillslope soil and stream sediment of forested watersheds and streams were affected by wildfire and how recovery progressed over three years. Supplemental_Information: Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2020-638-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20200911 Ending_Date: 20250313 Currentness_Reference: Airborne ashes were collected up to one month post-fire. Stream sediments were collected after first flush, high flow, and low flow conditions for three years post-fire. In situ ashes were collected at 6-month intervals for three years post-fire. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -122.3958 East_Bounding_Coordinate: -122.0299 North_Bounding_Coordinate: 37.3259 South_Bounding_Coordinate: 35.4568 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:7993238a-08e7-42f6-80b2-28a9556fff3a Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Substrate Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geochemistry Theme_Keyword: soil chemistry Theme_Keyword: fires Theme_Keyword: sediment transport Theme_Keyword: metal elements Theme_Keyword: rare earth elements Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: stream Theme_Keyword: watershed Theme_Keyword: river discharge Theme_Keyword: sediment geochemistry Theme_Keyword: environmental chemistry Theme_Keyword: mercury analysis Theme_Keyword: stable isotope analysis Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Santa Cruz Mountains Place_Keyword: Ben Lomond Mountain Place_Keyword: San Gregorio Creek Place_Keyword: Pescadero Creek Place_Keyword: Butano Creek Place_Keyword: Gazos Creek Place_Keyword: Waddell Creek Place_Keyword: Scott Creek Place_Keyword: Big Creek Place_Keyword: Little Creek Place_Keyword: San Vicente Creek Place_Keyword: Santa Cruz Access_Constraints: No access constraints Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: pic_LittleCreek.JPG Browse_Graphic_File_Description: Left bank of Little Creek five months after the 2020 CZU Wildfire. Browse_Graphic_File_Type: JPEG Data_Set_Credit: Angela Tan analyzed total carbon, total inorganic carbon, and total organic carbon contents at the USGS Pacific Coastal and Marine Science Center Sediment and Carbon Laboratory. Ratios of stable isotopes of carbon 13/12, and of total carbon to total nitrogen were measured at the Washington State University Core Stable Isotope Lab. Elemental compositions were determined by the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC). Native_Data_Set_Environment: Geochemical data are tabulated in comma separated variable (CSV) format. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: For charcoal counts, relative standard deviations (RSD) of 31 field-based triplicate samples ranged from 6 to 115 percent with a mean RSD of 35 percent and a median RSD of 28 percent. For carbon contents, process duplicates were run for every sample and were within 15 percent. For stable isotope ratios, standard external reference materials and long-term internal reference materials were included in every run; 2-sigma uncertainties were 0.5 per mil. For elemental chemistry, GGGSC checked QA/QC for standard reference materials and long-term internal reference materials for every batch (job). The percent recoveries for elements were within 15 percent of reference values. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Charcoal was counted only in stream sediment. Carbon contents and stable isotope ratios were not measured in regolith. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: A Garmin handheld GPS (model GPSmap 78sc) reported a horizontal accuracy of 3 meters. However, Garmin cites the actual accuracy as 5 to 15 meters. Lineage: Process_Step: Process_Description: SAMPLE COLLECTION. Stream sediment was collected by hand from recently deposited fine-grained material on stream banks and stored in wire-top polyethylene bags. Charcoal samples were collected in duplicate or triplicate in sandy material on the stream bank using a one-quarter teaspoon scoop and stored in falcon vials. Ash, soil, and mixed samples were collected from undisturbed forest sites by hand, stored in combusted 500 milliliter glass jars, and sieved to remove particles greater than 2 mm in diameter. Process_Date: 20230816 Process_Step: Process_Description: CHARCOAL COUNTS. Sediment was gently agitated with bleach at room temperature for two hours without changing particle sizes. Stainless steel sieves were used to separate particles greater than or equal to 0.125 mm in diameter. The retained particles were rinsed in a water bath. Particles were transferred to a petri dish and dried completely at 45 degrees Celsius. Charcoal particles were counted under a stereo-microscope. Process_Date: 20220803 Process_Step: Process_Description: CARBON CONTENTS. Carbon analysis was performed at the PCMSC Carbon Laboratory by combustion, acidification, and coulometric detection using a UIC CM5015 Coulometer. Approximately 1 gram of sediment was dried overnight at 80 degrees Celsius and pulverized by hand in a mortar and pestle. 20 milligrams of sediment for total carbon (TC) were combusted at 950 degrees Celsius (UIC CM 5230 furnace) and quantified with a coulometric titration. 20 milligrams of sediment for total inorganic carbon (TIC) were digested with perchloric acid (UIC CM 5130 acid digester) and quantified with a coulometric titration. Total organic carbon (TOC) was calculated as the difference between TC and TIC. Average values of process duplicates are reported. Process_Date: 20250313 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Angela Tan Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Position: Physical Scientist Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7409 Contact_Electronic_Mail_Address: atan@usgs.gov Process_Step: Process_Description: STABLE ISOTOPE RATIOS OF CARBON 13/12 (d13C) and NITROGEN 15/14 (d15N). Bulk sedimentary d13C and d15N were determined at the Washington State University Stable Isotope Core Laboratory using an elemental analyzer (Costech Analytical) interfaced with a Delta PlusXP isotope ratio mass spectrometer using a Santrock correction (ThermoFinnegan). Ratios of d13C ratios were referenced to the Vienna PeeDeeBelemnite (VBPD) using NBS 19 and LSVEC as anchor points. Ratios of d15N were referenced to air. Process_Date: 20220105 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Benjamin Harlow Contact_Organization: Washington State University School of Biological Sciences Contact_Position: Manager, Stable Isotope Core Laboratory Contact_Address: Address_Type: Mailing Address: 367 Eastlick City: Pullman State_or_Province: WA Postal_Code: 99165 Contact_Voice_Telephone: 509-335-6154 Contact_Electronic_Mail_Address: bharlow@wsu.edu Process_Step: Process_Description: ELEMENTAL CHEMISTRY. Bulk sediment was oven-dried at 60 degrees Celsius and disaggregated gently with a mortar and pestle to avoid changing grain sizes. Disaggregated sediment was dry-sieved through stainless steel sieves to obtain 2 grams of the less than 0.063 millimeter fine fraction. Fine sediments were sent to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC), which contracted AGAT and SGS Labs, both nationally accredited, for analyses of major, minor, and trace element contents using two methods: a near-total four-acid digestion (labeled multi-acid in the table of data) and a total digestion with a sodium peroxide fusion (labeled fusion in the table of data) for elements hosted in acid-resistant minerals. Quantification was performed by inductively coupled plasma atomic emission spectroscopy (ICP-AES) for major and some minor elements and by inductively coupled plasma mass spectroscopy (ICP-MS) for some minor and all trace elements. Process_Date: 20250105 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jaime Azain Contact_Organization: USGS Geology, Geophysics, and Geochemistry Science Center Contact_Position: Research Geologist Contact_Address: Address_Type: mailing Address: Denver Federal Center, Bldg 20 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 303-236-9376 Contact_Electronic_Mail_Address: jsazain@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 211 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS84 Semi-major_Axis: 6378137.0000 Denominator_of_Flattening_Ratio: 298.2572 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: CZUparticulates_charcoal_isotopes_elements_data.csv Entity_Type_Definition: Table of data. -9999 indicates not determined Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: LabID Attribute_Definition: Unique sample identifier for the CZU Wildfire Project (CZU) with sample type abbreviations: SED, stream sediment; RGTH, regolith; HVAC, intake vent filter on the roof of PCMSC; CONTROL, unburnt forest; ASH, wildfire ash; MIX, mixture of ash and soil; SOIL, soil below the ash layer. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Unique alphanumeric field sample identifier Attribute: Attribute_Label: SiteID_Loc_Period Attribute_Definition: Unique sample identifier assigned during field collection based on the Site (SiteID), location within the site (Loc) if relevant, and period of collection (Period). Abbreviations: VIC, San Vicente Creek; LIT, Little Creek; BIG, Big Creek; MIL, Mill Creek; SCO, Scott Creek; WAD, Waddell Creek; GAZ, Gazos Creek; BUT, Butano Creek; PESC, Pescadero Creek; GREG, San Gregorio Creek; LAST, Last Chance Creek; BERRY, Berry Creek; CLE, Clear Creek basin; JAM, Jamison Creek basin; LOCK, Lockheed gate; EAG, Eagle Mountain trail head; Y1, Year 1 from August 2020 to July 2021; Y2, Year 2 from August 2021 to July 2022; Y3, Year 3 from August 2022 to August 2023; PF, pre-flush; FF, first flush; HF, high flow; LF, low flow; AC, roof-top HVAC unit and number; AG, ash collected by Amy Gartman; RT, ash collected by Renee Takesue; mo, months.; DUP, duplicate. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Unique alphanumeric field sample identifier Attribute: Attribute_Label: Date_collected Attribute_Definition: Date the sample was collected, in mm/dd/yy Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 08/19/20 Range_Domain_Maximum: 08/16/23 Attribute_Units_of_Measure: mm/dd/yy Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Latitude_WGS84 Attribute_Definition: Latitude where the sample was collected relative to geodetic datum WGS84. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 35.4568 Range_Domain_Maximum: 37.3259 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Longitude_WGS84 Attribute_Definition: Longitude where the sample was collected relative to geodetic datum WGS84. Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -122.3958 Range_Domain_Maximum: -122.0299 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Charcoal_count Attribute_Definition: Number of charcoal particles greater than or equal to 0.125 mm in diameter per one-quarter teaspoon of stream sediment. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4 Range_Domain_Maximum: 663 Attribute_Units_of_Measure: particle Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Total_Carbon Attribute_Definition: Total carbon (TC) content determined by coulometry. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.32 Range_Domain_Maximum: 14.16 Attribute_Units_of_Measure: percent by weight Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Total_Inorganic_Carbon Attribute_Definition: Total inorganic carbon (TIC) content determined by coulometry. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.00 Range_Domain_Maximum: 5.29 Attribute_Units_of_Measure: percent by weight Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Total_Organic_Carbon Attribute_Definition: Total organic carbon (TOC) content determined by subtraction of TIC from TOC. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.29 Range_Domain_Maximum: 12.14 Attribute_Units_of_Measure: percent by weight Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: d13C_bulk Attribute_Definition: Ratio of carbon 13/12 stable isotopes in bulk sedimentary organic matter; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -31.70 Range_Domain_Maximum: -24.81 Attribute_Units_of_Measure: standard per mil notation Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: d13C_TC Attribute_Definition: Total carbon (TC) determined by elemental analyzer in the measurement of d13C. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.32 Range_Domain_Maximum: 38.76 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: d15N_bulk Attribute_Definition: Ratio of carbon 13/12 stable isotopes in bulk sedimentary organic matter; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.07 Range_Domain_Maximum: 5.21 Attribute_Units_of_Measure: standard per mil notation Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: d15N_TN Attribute_Definition: Total nitrogen (TN) determined by elemental analyzer in the measurement of d15N. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.02 Range_Domain_Maximum: 0.92 Attribute_Units_of_Measure: percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: GGGSC_JobID Attribute_Definition: Unique laboratory identifier assigned to a batch of samples by the GGGSC Analytical Chemistry Laboratory. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Unique alphanumeric batch identifier Attribute: Attribute_Label: GGGSC_SampleID Attribute_Definition: Unique laboratory identifier assigned to each sample by the GGGSC Analytical Chemistry Laboratory. -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Unrepresentable_Domain: Unique alphanumeric batch identifier Attribute: Attribute_Label: Hg_by_CVAA Attribute_Definition: Total mercury (Hg) content analyzed by cold vapor atomic absorption (CVAA) in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.012 Range_Domain_Maximum: 0.710 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Al_by_fusion Attribute_Definition: Aluminum (Al) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.45 Range_Domain_Maximum: 12.20 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ca_by_fusion Attribute_Definition: Calcium (Ca) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.10 Range_Domain_Maximum: 30.10 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Fe_by_fusion Attribute_Definition: Iron (Fe) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.80 Range_Domain_Maximum: 12.30 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: K_by_fusion Attribute_Definition: Potassium (K) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.90 Range_Domain_Maximum: 5.93 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mg_by_fusion Attribute_Definition: Magnesium (Mg) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.14 Range_Domain_Maximum: 3.55 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Na_by_multi-acid Attribute_Definition: Sodium (Na) content of multi-acid digested sediment; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.09 Range_Domain_Maximum: 2.25 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: P_by_fusion Attribute_Definition: Phosphorus (P) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 1.26 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: S_by_fusion Attribute_Definition: Sulfur (S) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0 Range_Domain_Maximum: 1.1 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Si_by_fusion Attribute_Definition: Silica (Si) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.9 Range_Domain_Maximum: 38.0 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Ti_by_fusion Attribute_Definition: Titanium (Ti) content of fused, digested sediment; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.12 Range_Domain_Maximum: 1.24 Attribute_Units_of_Measure: weight percent Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ag_by_multi-acid Attribute_Definition: Silver (Ag) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 1.62 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: As_by_multi-acid Attribute_Definition: Arsenic (As) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 50 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Ba_by_multi-acid Attribute_Definition: Barium (Ba) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 274 Range_Domain_Maximum: 2710 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Be_by_multi-acid Attribute_Definition: Beryllium (Be) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.28 Range_Domain_Maximum: 2.74 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Bi_by_multi-acid Attribute_Definition: Bismuth (Bi) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.03 Range_Domain_Maximum: 0.64 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Cd_by_multi-acid Attribute_Definition: Cadmium (Cd) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.06 Range_Domain_Maximum: 6.73 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ce_by_fusion Attribute_Definition: Cerium (Ce) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 12.5 Range_Domain_Maximum: 115.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Co_by_multi-acid Attribute_Definition: Cobalt (Co) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.7 Range_Domain_Maximum: 33.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Cr_by_fusion Attribute_Definition: Chromium (Cr) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3 Range_Domain_Maximum: 754 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Cs_by_multi-acid Attribute_Definition: Cesium (Cs) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.49 Range_Domain_Maximum: 9.41 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Cu_by_multi-acid Attribute_Definition: Copper (Cu) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.6 Range_Domain_Maximum: 220.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Dy_by_fusion Attribute_Definition: Dysprosium (Dy) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.09 Range_Domain_Maximum: 10.70 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Er_by_fusion Attribute_Definition: Erbium (Er) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.51 Range_Domain_Maximum: 5.70 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Eu_by_fusion Attribute_Definition: Europium (Eu) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.23 Range_Domain_Maximum: 2.86 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ga_by_multi-acid Attribute_Definition: Gallium (Ga) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.8 Range_Domain_Maximum: 31.9 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Gd_by_fusion Attribute_Definition: Gadolinium (Gd) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.03 Range_Domain_Maximum: 11.10 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Ge_by_fusion Attribute_Definition: Germanium (Ge) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 7 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Hf_by_fusion Attribute_Definition: Hafnium (Hf) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2 Range_Domain_Maximum: 71 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Ho_by_fusion Attribute_Definition: Holmium (Ho) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.16 Range_Domain_Maximum: 2.04 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: In_by_multi-acid Attribute_Definition: Indium (In) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.013 Range_Domain_Maximum: 0.114 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: La_by_fusion Attribute_Definition: Lanthanum (La) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.5 Range_Domain_Maximum: 63.3 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Li_by_multi-acid Attribute_Definition: Lithium (Li) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 8.0 Range_Domain_Maximum: 73.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Lu_by_fusion Attribute_Definition: Lutetium (Lu) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.07 Range_Domain_Maximum: 1.15 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Mn_by_multi-acid Attribute_Definition: Manganese (Mn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 31 Range_Domain_Maximum: 8310 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Mo_by_multi-acid Attribute_Definition: Molybdenum (Mo) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.83 Range_Domain_Maximum: 14.60 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Nb_by_fusion Attribute_Definition: Niobium (Nb) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.8 Range_Domain_Maximum: 27.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Nd_by_fusion Attribute_Definition: Neodymium (Nd) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.2 Range_Domain_Maximum: 55.9 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Ni_by_fusion Attribute_Definition: Nickel (Ni) content of fused, digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5 Range_Domain_Maximum: 182 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Pb_by_multi-acid Attribute_Definition: Lead (Pb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.1 Range_Domain_Maximum: 780 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Pr_by_fusion Attribute_Definition: Praseodymium (Pr) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.62 Range_Domain_Maximum: 14.50 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Rb_by_multi-acid Attribute_Definition: Rubidium (Rb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.9 Range_Domain_Maximum: 154.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sb_by_multi-acid Attribute_Definition: Antimony (Sb) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.21 Range_Domain_Maximum: 8.35 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Sc_by_multi-acid Attribute_Definition: Scandium (Sc) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.3 Range_Domain_Maximum: 29.8 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sm_by_fusion Attribute_Definition: Samarium (Sm) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.2 Range_Domain_Maximum: 12.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sn_by_multi-acid Attribute_Definition: Tin (Sn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 43 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Sr_by_multi-acid Attribute_Definition: Strontium (Sr) content of multi-acid digested sediment in units of mg per kg Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 55 Range_Domain_Maximum: 2300 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Ta_by_multi-acid Attribute_Definition: Tantalum (Ta) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.19 Range_Domain_Maximum: 2.49 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Tb_by_fusion Attribute_Definition: Terbium (Tb) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.15 Range_Domain_Maximum: 1.85 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Te_by_multi-acid Attribute_Definition: Tellurium (Te) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.01 Range_Domain_Maximum: 1.77 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Th_by_fusion Attribute_Definition: Thorium (Th) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.9 Range_Domain_Maximum: 18.8 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Tl_by_multi-acid Attribute_Definition: Thallium (Tl) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.17 Range_Domain_Maximum: 1.79 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: Tm_by_fusion Attribute_Definition: Thulium (Tm) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.08 Range_Domain_Maximum: 0.85 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: U_by_fusion Attribute_Definition: Uranium (U) content of fused, digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.12 Range_Domain_Maximum: 15.00 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: V_by_multi-acid Attribute_Definition: Vanadium (V) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 22 Range_Domain_Maximum: 188 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: W_by_multi-acid Attribute_Definition: Tungsten (W) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 5.3 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Y_by_fusion Attribute_Definition: Yttrium (Y) content of fused digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.1 Range_Domain_Maximum: 61.0 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Yb_by_fusion Attribute_Definition: Ytterbium (Yb) content of fused digested sediment in units of mg per kg Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 6.2 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: Zn_by_multi-acid Attribute_Definition: Zinc (Zn) content of multi-acid digested sediment in units of mg per kg; -9999=not determined Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 26 Range_Domain_Maximum: 2540 Attribute_Units_of_Measure: milligrams per kilogram (mg per kg) Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Zr_by_fusion Attribute_Definition: Zirconium (Zr) content of the fused, digested sediment in units of weight percent (percent) Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 58 Range_Domain_Maximum: 2352 Attribute_Units_of_Measure: weight percent (percent) Attribute_Measurement_Resolution: 1 Overview_Description: Entity_and_Attribute_Overview: The first line of the csv file is a header line. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - CMGDS Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 1-831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Resource_Description: These data are available in csv format (CZUparticulates_charcoal_isotopes_elements_data.csv), accompanied by CSDGM FGDC compliant metadata and a map showing sample locations. Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: comma-delimited text Format_Information_Content: File contains the csv table and the associated metadata. File_Decompression_Technique: No compression applied Transfer_Size: 0.0807 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.5066/P13QWYFV Access_Instructions: Data and metadata can be downloaded using the Network_Resource_Name link and scrolling down to the Sampling Data section. Fees: None. Technical_Prerequisites: These data can be viewed with any text reader. Metadata_Reference_Information: Metadata_Date: 20251211 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998