Metadata: Identification_Information: Citation: Citation_Information: Originator: Hope L. Ianiri Originator: Pamela L. Campbell Originator: Nancy G. Prouty Publication_Date: 20250218 Title: Lipid biomarker data from Escanaba Trough sediments, off the coast of Northern California, USA, from May-June 2022. Geospatial_Data_Presentation_Form: comma-delimited text Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13XVXQC 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/P13XVXQC Larger_Work_Citation: Citation_Information: Originator: Hope L. Ianiri Originator: Nancy G. Prouty Originator: Pamela L. Campbell Originator: Amy Gartman Originator: Katlin B. Adamczyk Originator: Jaycee J. Favela Publication_Date: 2025 Title: Sedimentary organic geochemistry data from Escanaba Trough, off the coast of northern California, collected May-June 2022. Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P13XVXQC Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested Citation: Ianiri, H.L., Prouty, N.G., Campbell, P.L., Gartman, A., Adamczyk, K.B., and Favela, J.J., 2025, Sedimentary organic geochemistry data from Escanaba Trough, off the coast of northern California, collected May-June 2022: U.S. Geological Survey data release, https://doi.org/10.5066/P13XVXQC. Online_Linkage: https://doi.org/10.5066/P13XVXQC Description: Abstract: Lipid biomarkers, including n-alkanes, polycyclic aromatic hydrocarbons (PAHs), and sterols, were measured on sediments from the Escanaba Trough, a hydrothermal spreading center off the coast of Northern CA. Purpose: Data were obtained to assess organic carbon storage, reactivity, and cycling within sediments of the Escanaba Trough, a hydrothermal spreading center which contains critical minerals. This work aids our understanding of the geochemistry of marine mineral host sediments and hydrothermal vent processes throughout the global ocean. Supplemental_Information: Additional information about the field activity or activities from which these data were derived is available online at: https:// https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-621-FA Escanaba Trough: Exploring the Seafloor and Oceanic Footprints is an interagency effort involving the National Oceanic and Atmospheric Administration, the U.S. Geological Survey, and the Bureau of Ocean Energy Management. Funding is acknowledged from NOAA Ocean Exploration via its Ocean Exploration Fiscal Year 2019 Funding Opportunity and through the National Oceanographic Partnership Program (NOPP), from the USGS Coastal and Marine Hazards and Resources Enhanced Funding Opportunities, and from the Bureau of Ocean Energy Management through Interagency Agreement M19PG00021 with the United States Geological Survey. 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: 20220531 Ending_Date: 20220611 Currentness_Reference: Ground condition at time data were collected. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -127.53618710 East_Bounding_Coordinate: -127.44714953 North_Bounding_Coordinate: 41.08222461 South_Bounding_Coordinate: 40.69569198 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: oceans Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Nonliving resources Theme_Keyword: Mineral resources Theme_Keyword: Physical/Chemical features Theme_Keyword: Substrate Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: push coring Theme_Keyword: subsampling Theme_Keyword: geochemistry Theme_Keyword: marine geology Theme_Keyword: gas chromatography Theme_Keyword: mass spectroscopy Theme_Keyword: biomarkers Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: petroleum resources Theme_Keyword: carbon cycle Theme_Keyword: seep and vent ecosystems Theme_Keyword: chemical analysis Theme_Keyword: sediment geochemistry 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 Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:6696dc47d34ecb78f609f726 Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Pacific Ocean Place: Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS) Place_Keyword: Escanaba Trough 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 Native_Data_Set_Environment: Geochemical data are tabulated in comma separated variable (CSV) format. Cross_Reference: Citation_Information: Originator: Hope L. Ianiri Originator: Pamela L. Campbell Originator: Amy Gartman Originator: Nancy G. Prouty Publication_Date: 2025 Title: Characterizing sedimentary organic carbon in a hydrothermal spreading center, the Escanaba Trough Other_Citation_Details: Ianiri, H.L., Campbell, P., Gartman, A., and Prouty, N.G., 2025, Characterizing sedimentary organic carbon in a hydrothermal spreading center, the Escanaba Trough: Chemical Geology, https://doi.org/10.1016/j.chemgeo.2025.122679. Online_Linkage: https://doi.org/10.1016/j.chemgeo.2025.122679 Cross_Reference: Citation_Information: Originator: J. L. Morton Originator: Robert A. Zierenberg Originator: Carol A. Reiss Publication_Date: 1994 Title: Geologic, hydrothermal, and biologic studies at Escanaba Trough, Gorda Ridge, offshore northern California Other_Citation_Details: Morton, J.L., Zierenberg, R.A., Reiss, C.A., 1994. Geologic, hydrothermal, and biologic studies at Escanaba Trough: an introduction, in: Geologic, Hydrothermal, and Biologic Studies at Escanaba Trough, Gorda Ridge, Offshore Northern California. U.S. Geological Survey. Online_Linkage: Cross_Reference: Citation_Information: Originator: David. A. Clague Originator: Robert A. Zierenberg Originator: Jennifer B. Paduan Originator: David W. Caress Originator: Brian L. Cousens Originator: Brian M. Dreyer Originator: Alice S. Davis Originator: James McClain Originator: Stephanie L. Ross Publication_Date: 2022 Title: Emplacement and impacts of lava flows and intrusions on the sediment-buried Escanaba Segment of the Gorda mid-ocean ridge Other_Citation_Details: Clague, D.A., Zierenberg, R.A., Paduan, J.B., Caress, D.W., Cousens, B.L., Dreyer, B.M., Davis, A.S., McClain, J., Ross, S.L., 2022. Emplacement and impacts of lava flows and intrusions on the sediment-buried Escanaba Segment of the Gorda mid-ocean ridge. Journal of Volcanology and Geothermal Research 432, 107701. Online_Linkage: https://www.sciencedirect.com/science/article/pii/S0377027322002323 Cross_Reference: Citation_Information: Originator: E. G. Bligh Originator: E. J. Dyer Publication_Date: 1959 Title: A rapid method of total lipid extraction and purification Other_Citation_Details: Bligh E. G., Dyer E. J., 1959. A rapid method of total lipid extraction and purification. Canadian Journal of Biochemistry and Physiology, 37 (8). Online_Linkage: https://doi.org/10.1139/o59-099 Cross_Reference: Citation_Information: Originator: Nancy G. Prouty Originator: Pamela L. Campbell Originator: Hilary G. Close Originator: Jennifer F. Biddle Originator: Sabrina Beckmann Publication_Date: 2020 Title: Molecular indicators of methane metabolisms at cold seeps along the United States Atlantic Margin Other_Citation_Details: Prouty N. G., Campbell P. L., Close H. G., Biddle J. F., Beckmann S., 2020. Molecular indicators of methane metabolisms at cold seeps along the United States Atlantic Margin. Chemical Geology, 543, 119603. Online_Linkage: https://www.sciencedirect.com/science/article/pii/S000925412030142X Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Surrogate standards and an internal standard were used for validation, recoveries, and quantification of biomarker concentrations. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Dataset is considered complete for the information presented as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal accuracy for each sample was obtained from the ROV's Ultra Short Baseline Positioning System (USBL) navigation after calibration to the CASIUS (Calibration of Attitude Sensors In USBL Systems) calibration system. Accuracy for this depth is approximately 10- 20 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical accuracy was determined using multiple DVLs (Doppler Velocity Loggers) on the ROV, which are accurate to less than 1 m. Lineage: Process_Step: Process_Description: SEDIMENT COLLECTION. Samples were collected aboard the R/V Thomas Thompson via push coring using the ROV Jason. Once recovered shipboard, pore waters were extracted via rhizon samplers, cores were subsectioned into one to five cm slices, the exterior sediment which was in contact with the core liner was removed, and remaining sediment was stored frozen in pre-combusted glass jars. Process_Date: 20220611 Process_Step: Process_Description: SEDIMENT BIOMARKER CONCENTRATIONS (N-ALKANES, PAHS AND STEROLS): The biomarker composition of sediment samples was determined by gas chromatography-mass spectrometry (GC MS) at the USGS Organic Geochemistry laboratory in Santa Cruz, California. The samples were extracted using a modified version of the method presented in Bligh and Dyer (1959). Two bed volumes of hexanes were added to each sample and samples were mixed, sonicated for 15 minutes (min), then centrifuged for five min at 2000 revolutions per min. The supernatant was piped to a combusted Turbovap flask. This process was repeated two more times with hexanes and three times with 9:1 DCM:MeOH, combining the supernatant from each sample. Prior to extraction, internal standards were added (5-alpha-androstane and 5-alpha-androstan-3-beta-ol). The lipid extracts were passed though glass funnels containing sodium sulfate to remove excess water, followed by separation into compound classes by silica gel column chromatography (silica gel 60) as described in Prouty and others (2020). The following fractions were eluted: F1: alkanes (100 percent hexane eluant); F2: polycyclic aromatic hydrocarbons (PAHs) (50 percent hexane, 50 percent toluene eluant); F3a: alcohols and sterols (20 percent ethyl acetate, 80 percent hexane eluant); F3b: fatty acids and glycosidic polar lipids (40 percent ethyl acetate, 60 percent hexane); F4: phosphatic polar lipids (100 percent methanol eluant). F3a was converted to trimethylsiloxyl derivatives by addition of bis (trimethylsilyl) trifluoroacetamide (BSTFA with 10 percent TMCS) and pyridine, then heated at 70 degrees Celsius for 1 h prior to GC MS analysis. Extracts were analyzed by splitless injection onto an Agilent 8890 gas chromatograph interfaced to an Agilent 7000D triple quad mass spectrometer. To measure n-alkanes, the gas chromatograph oven program began at 90 degrees Celsius for 5 min, increased to 240 degrees Celsius at a rate of 4 degrees Celsius/min, held for 5 min, then increased to a final temperature of 300 degrees Celsius at a rate of 10 degrees Celsius/min and held for 18 min. To measure PAHs, the oven program begam at 90 degrees Celsius, held for 5 min, increased to 240 degrees Celsius at a rate of 8 degrees Celsius/min, held for 5 min, then increased to a final temperature of 300 degrees Celsius at a rate of 8 degrees Celsius/min which was held for 18 min. To measure sterols, the oven program began at 100 degrees Celsius, held for 4 min, and increased to a final temperature of 315 degrees Celsius at 4 degrees Celsius/min, which was held for 5 min. The capillary column (Agilent DB-5MS: 30 m length x 0.25 mm interior diameter with a 0.025 micron phase thickness) was directly interfaced to the ion source of the mass spectrometer. Hexane instrument blanks, extraction blanks, and procedural sample duplicates were run and analyzed every 10 samples. Compound identification was through individual standard spectra, published reference spectra, and by relative retention times/elution order. Concentrations of individual lipids were determined based on peak area in relation to internal and external standards. Process_Date: 20230525 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: 12 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00000001 Longitude_Resolution: 0.0000001 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: EscanabaTrough_lipids.csv Entity_Type_Definition: Table of lipid biomarker data. Entity_Type_Definition_Source: producer defined Attribute: Attribute_Label: Cruise_ID Attribute_Definition: Lists the alphanumeric cruise identifier for the expedition during which the sample was collected. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TN403 Enumerated_Domain_Value_Definition: Cruise identification affiliated with Field Activity 2022-621-FA Enumerated_Domain_Value_Definition_Source: producer defined Attribute: Attribute_Label: Sample_ID Attribute_Definition: Name of sample Attribute_Definition_Source: producer defined Attribute_Domain_Values: Unrepresentable_Domain: The sample names include a dive number (J2, denoting Jason2, followed by a number), push core number (PC, denoting push core, followed by a number) and the sediment depth horizon (X-Y). Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sample in decimal degrees Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 40.69572818 Range_Domain_Maximum: 41.08224004 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.00000001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sample in decimal degrees Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -127.5282233 Range_Domain_Maximum: -127.4470967 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.0000001 Attribute: Attribute_Label: Water_depth_m Attribute_Definition: Water depth in meters at which the sample was collected. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3223 Range_Domain_Maximum: 3235 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: Location Attribute_Definition: Location where the sample was collected Attribute_Definition_Source: producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Central Hill Enumerated_Domain_Value_Definition: Text descriptor of sampling site as defined in the literature Enumerated_Domain_Value_Definition_Source: Morton and others (1994), Clague and others (2022) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Edifice Rex East Enumerated_Domain_Value_Definition: Text descriptor of sampling site as defined in the literature Enumerated_Domain_Value_Definition_Source: Morton and others (1994), Clague and others (2022) Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: SESCA S3A Enumerated_Domain_Value_Definition: Text descriptor of sampling site as defined in the literature Enumerated_Domain_Value_Definition_Source: Morton and others (1994), Clague and others (2022) Attribute: Attribute_Label: sediment_depth_top_cm Attribute_Definition: top depth of core subsample. Ex: a sediment core slice from 0-1 cm would have a top depth of 0 centimeters and a bottom depth of 1 centimeter. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 18 Attribute_Units_of_Measure: centimeters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: sediment_depth_bottom_cm Attribute_Definition: bottom depth of core subsample. Ex: a sediment core slice from 0-1 cm would have a top depth of 0 centimeters and a bottom depth of 1 centimeter. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 20 Attribute_Units_of_Measure: centimeters Attribute_Measurement_Resolution: 1 Attribute: Attribute_Label: C15_nalkane_ug_gOC Attribute_Definition: Concentration of pentadecane (C15 n-alkane). -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.5 Range_Domain_Maximum: 25.5 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C16_nalkane_ug_gOC Attribute_Definition: Concentration of hexadecane (C16 n-alkane). -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.6 Range_Domain_Maximum: 53.2 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C17_nalkane_ug_gOC Attribute_Definition: Concentration of heptadecane (C17 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.9 Range_Domain_Maximum: 88.6 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C18_nalkane_ug_gOC Attribute_Definition: Concentration of octadecane (C18 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.6 Range_Domain_Maximum: 106.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C19_nalkane_ug_gOC Attribute_Definition: Concentration of nonadecane (C19 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.3 Range_Domain_Maximum: 116.3 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C20_nalkane_ug_gOC Attribute_Definition: Concentration of eicosane (C20 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.4 Range_Domain_Maximum: 149.3 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C21_nalkane_ug_gOC Attribute_Definition: Concentration of heneicosane (C21 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.1 Range_Domain_Maximum: 150.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C22_nalkane_ug_gOC Attribute_Definition: Concentration of docosane (C22 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.9 Range_Domain_Maximum: 183.1 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C23_nalkane_ug_gOC Attribute_Definition: Concentration of tricosane (C23 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.4 Range_Domain_Maximum: 168.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C24_nalkane_ug_gOC Attribute_Definition: Concentration of tetracosane (C24 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.9 Range_Domain_Maximum: 199.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C25_nalkane_ug_gOC Attribute_Definition: Concentration of pentacosane (C25 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.1 Range_Domain_Maximum: 157.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: C26_nalkane_ug_gOC Attribute_Definition: Concentration of hexacosane (C26 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.6 Range_Domain_Maximum: 184.5 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: C27_nalkane_ug_gOC Attribute_Definition: Concentration of heptacosane (C27 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.9 Range_Domain_Maximum: 177.7 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C28_nalkane_ug_gOC Attribute_Definition: Concentration of octacosane (C28 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.5 Range_Domain_Maximum: 200.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C29_nalkane_ug_gOC Attribute_Definition: Concentration of nonacosane (C29 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 9.6 Range_Domain_Maximum: 199.3 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C30_nalkane_ug_gOC Attribute_Definition: Concentration of triacontane (C30 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.4 Range_Domain_Maximum: 252.1 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C31_nalkane_ug_gOC Attribute_Definition: Concentration of hentriacontane (C31 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.2 Range_Domain_Maximum: 228.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C32_nalkane_ug_gOC Attribute_Definition: Concentration of dotriacontane (C32 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.6 Range_Domain_Maximum: 224.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C33_nalkane_ug_gOC Attribute_Definition: Concentration of tritriacontane (C33 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.9 Range_Domain_Maximum: 197.5 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C34_nalkane_ug_gOC Attribute_Definition: Concentration of tetratriacontane (C34 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.7 Range_Domain_Maximum: 181.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C35_nalkane_ug_gOC Attribute_Definition: Concentration of pentatriacontane (C35 n-alkane). Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.6 Range_Domain_Maximum: 108.0 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C36_nalkane_ug_gOC Attribute_Definition: Concentration of hexatriacontane (C36 n-alkane). -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.4 Range_Domain_Maximum: 169.7 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: C37_nalkane_ug_gOC Attribute_Definition: Concentration of heptatriacontane (C37 n-alkane). -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.1 Range_Domain_Maximum: 238.1 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: phytane_ug_gOC Attribute_Definition: Concentration of phytane. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.8 Range_Domain_Maximum: 90.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: pristane_ug_gOC Attribute_Definition: Concentration of pristane. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.0 Range_Domain_Maximum: 81.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: anthracene_ug_gOC Attribute_Definition: Concentration of anthracene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.5 Range_Domain_Maximum: 3.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: benz(a)anthracene_ug_gOC Attribute_Definition: Concentration of benz(a)anthracene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.8 Range_Domain_Maximum: 395.9 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: benzo(a)pyrene_ug_gOC Attribute_Definition: Concentration of benzo(a)pyrene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.1 Range_Domain_Maximum: 288.5 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: benzo(b)fluoranthene_ug_gOC Attribute_Definition: Concentration of benzo(b)fluoranthene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1.9 Range_Domain_Maximum: 153.7 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: benzo(g,h,i)perylene_ug_gOC Attribute_Definition: Concentration of benzo(g,h,i)perylene. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.2 Range_Domain_Maximum: 1888.9 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: benzo(k)fluoranthene_ug_gOC Attribute_Definition: Concentration of benzo(k)fluoranthene. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.8 Range_Domain_Maximum: 924.6 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: chrysene_ug_gOC Attribute_Definition: Concentration of chrysene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.2 Range_Domain_Maximum: 6.0 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: dibenz(a,h)anthracene_ug_gOC Attribute_Definition: Concentration of dibenz(a,h)anthracene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.6 Range_Domain_Maximum: 9.2 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: fluoranthrene_ug_gOC Attribute_Definition: Concentration of fluoranthrene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.9 Range_Domain_Maximum: 373.1 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: fluorene_ug_gOC Attribute_Definition: Concentration of fluorene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 2.9 Range_Domain_Maximum: 119.6 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: indeno(1,2,3-c,d)pyrene_ug_gOC Attribute_Definition: Concentration of indeno(1,2,3-c,d)pyrene. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 6.2 Range_Domain_Maximum: 968.0 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: naphthalene_ug_gOC Attribute_Definition: Concentration of naphthalene. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -9999 Range_Domain_Maximum: -9999 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute: Attribute_Label: phenanthrene_ug_gOC Attribute_Definition: Concentration of phenanthrene. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.9 Range_Domain_Maximum: 589.8 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: pyrene_ug_gOC Attribute_Definition: Concentration of pyrene. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 4.3 Range_Domain_Maximum: 2591.3 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: cholesterol_ug_gOC Attribute_Definition: Concentration of cholesterol. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 3.0 Range_Domain_Maximum: 120.3 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: brassicasterol_ug_gOC Attribute_Definition: Concentration of brassicasterol. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.2 Range_Domain_Maximum: 5.0 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: campesterol_ug_gOC Attribute_Definition: Concentration of campesterol. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.4 Range_Domain_Maximum: 3.0 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: stigmasterol_ug_gOC Attribute_Definition: Concentration of stigmasterol. -9999 indicates peak below detection limit. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.3 Range_Domain_Maximum: 4.1 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 Attribute: Attribute_Label: beta-sitosterol_ug_gOC Attribute_Definition: Concentration of beta-sitosterol. Attribute_Definition_Source: producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.8 Range_Domain_Maximum: 6.4 Attribute_Units_of_Measure: micrograms per gram organic carbon. Attribute_Measurement_Resolution: 0.1 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 - ScienceBase Contact_Address: Address_Type: mailing and physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: These data are available in a single csv file (EscanabaTrough_lipids.csv). 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_Version_Number: Microsoft Excel Version 2308 Build 16731.20716 Click-to-Run Format_Information_Content: csv file File_Decompression_Technique: No compression applied Transfer_Size: 0.0472 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/6696dc47d34ecb78f609f726 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/6696dc47d34ecb78f609f726 Network_Resource_Name: https://doi.org/10.5066/P13XVXQC Access_Instructions: Data and metadata can be downloaded using the Network_Resource_Name links. The first link is a direct link to download a zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release. Fees: None. Technical_Prerequisites: These data can be viewed with Microsoft Excel or any text reading software. Metadata_Reference_Information: Metadata_Date: 20250218 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