Mineralogical point-count data from vibracores collected offshore central California, during field activity 2019-651-FA

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: George R. Snyder
Originator: Alicia F. Balster-Gee
Originator: Jared W. Kluesner
Originator: Samuel Y. Johnson
Originator: Elisa Medri
Originator: Alex Simms
Originator: Stu Nishenko
Originator: H. Gary Greene
Originator: James E. Conrad
Publication_Date: 20221213
Title:
Mineralogical point-count data from vibracores collected offshore central California, during field activity 2019-651-FA
Geospatial_Data_Presentation_Form: CSV format tabular data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9A0U8J7
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/P9A0U8J7
Larger_Work_Citation:
Citation_Information:
Originator: George R. Snyder
Originator: Alicia F. Balster-Gee
Originator: Jared W. Kluesner
Originator: Samuel Y. Johnson
Originator: Elisa Medri
Originator: Alex Simms
Originator: Stu Nishenko
Originator: H. Gary Greene
Originator: James E. Conrad
Publication_Date: 2022
Title:
Geophysical and core sample data collected offshore central California, during field activity 2019-651-FA
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9A0U8J7
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Online_Linkage: https://doi.org/10.5066/P9A0U8J7
Description:
Abstract:
This dataset includes mineralogical point-count data from sediment cores collected offshore central California in the vicinity of Morro Bay. These data were collected aboard the M/V Bold Horizon in October 2019 for use in regional hazard assessments relating to the Hosgri Fault.
Purpose:
Identification of fault-related submarine hazards is a primary mission of the USGS Coastal and Marine Hazards and Resources Program. The Hosgri Fault is a submarine fault system that likely poses the greatest submarine earthquake threat in the central California region. To gain a better understanding of this fault system, the USGS collected sparker multichannel seismic, CHIRP seismic, and sediment cores to enable a detailed investigation of its geologic history and ongoing activity. These data are intended to further our understanding of geologic hazards near the Hosgri Fault, improve risk assessments for local communities and critical infrastructure, and to provide data for future research on regional tectonic, sedimentary, and geomorphic evolution of coastal California. This work was funded through a Cooperative Research and Development Agreement (CRADA) between the USGS and Pacific Gas and Electric Corporation.
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=2019-651-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: 20191018
Ending_Date: 20191024
Currentness_Reference: Ground conditions at time data were collected
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -121.080024
East_Bounding_Coordinate: -121.074185
North_Bounding_Coordinate: 35.477597
South_Bounding_Coordinate: 35.476497
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:0870a6e8-62db-45b6-95dd-84712ee7b675
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: substrate
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: core analysis
Theme_Keyword: coastal processes
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: sediment
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: Pacific Ocean
Place_Keyword: State of California
Place_Keyword: San Luis Obispo County
Place_Keyword: Cayucos
Place_Keyword: Cambria
Place_Keyword: Estero Bay
Place_Keyword: Morro Bay
Place:
Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS)
Place_Keyword: Diablo Canyon
Access_Constraints: None
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
Data_Set_Credit:
USGS PCMSC Marine Facility personnel Rachel Marcuson, Jenny McKee, Cordell Johnson, and Dan Powers led vibracore collection operations.
Cross_Reference:
Citation_Information:
Originator: Elisa Medri
Originator: Alexander R. Simms
Originator: Jared Kluesner
Originator: Samuel Y. Johnson
Originator: Stuart P. Nishenko
Originator: H. Gary Greene
Originator: James E. Conrad
Publication_Date: 2022
Title:
Subaqueous clinoforms created by sandy wave-supported gravity flows: lessons from the central California shelf
Other_Citation_Details:
Medri, E., Simms, A.R., Kluesner, J., Johnson, S.Y., Nishenko, S.P., Greene, H.G., and Conrad, J.E., 2022, Subaqueous clinoforms created by sandy wave-supported gravity flows: Lessons from the central California shelf: Marine Geology, v. 456, doi: 10.1016/j.margeo.2022.106977.
Online_Linkage: hhttps://doi.org/10.1016/j.margeo.2022.106977
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All data were collected using the same sampling procedures and were evaluated during collection for accurate vales.
Logical_Consistency_Report: No formal logical consistency 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.
Lineage:
Process_Step:
Process_Description:
Cores were collected aboard the M/V Bold Horizon using a Rossfelder P-5 vibracorer during U.S. Geological Survey cruise 2019-651-FA. The cores were transported back to the USGS Pacific Coastal and Marine Science Center core lab for subsequent analyses.
Process_Date: 2019
Process_Step:
Process_Description:
Sampling areas were selected within important sedimentary layers within each core on the basis of distinct mineralogy and ages. Samples were prepared by wet-sieving followed by air and oven drying and a final dry-sieving to produce bulk samples with a grain size distribution ranging from 125-250 microns. Standard thin sections were prepared by Wagner Petrographic with clear epoxy impregnation and potassium feldspar staining. Fourteen slides were prepared with seven slides from the older “Unit 1” and seven slides from the younger “Unit 2” as described in Medri and others, 2022.
Process_Date: 2022
Process_Step:
Process_Description:
Point counting was conducted on a petrographic microscope under a 10X objective lens with total counts ranging from 323 to 408 grains per slide. For quartz-lithic-feldspar analysis, quartz includes both monocrystalline and polycrystalline varieties, feldspar includes both K-feldspar and plagioclase, and lithics include sedimentary clasts (sandstone, siltstone, mudstone, chert) and volcanic lithic fragments.
Process_Date: 2022
Process_Step:
Process_Description:
Corrected author/Originator spelling in Citation and Larger Work Citation sections of metadata (Media to Medri). Complete citation information added for Medri and others, 2022, Cross Reference. No data were changed. (scochran@usgs.gov)
Process_Date: 20230104
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: 14
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: 2019-651-FA_cores_pointcount.csv
Entity_Type_Definition:
Comma-delimited text file containing point-count mineralogical data for core samples.
Entity_Type_Definition_Source: Producer defined
Attribute:
Attribute_Label: Core Name
Attribute_Definition: Core number (for example, HF-2 is Hosgri Fault core 2).
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier for the sample given in the field
Attribute:
Attribute_Label: Sample
Attribute_Definition: Arbitrary sample number for point-count analysis.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Unique identifier for lab sample names
Attribute:
Attribute_Label: Sample Depth (cm)
Attribute_Definition:
Depth of sample collection measured from top of core. Where indicated, certain samples were obtained over a larger range to produce enough material of the desired grainsize.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 40
Range_Domain_Maximum: 297
Attribute_Units_of_Measure: centimeters
Attribute:
Attribute_Label: CHS Unit
Attribute_Definition: Name of unit sampled, as defined in Medri and others, 2022.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Unique unit identifiers.
Attribute:
Attribute_Label: Monocrystalline Quartz
Attribute_Definition: Number of monocrystalline quartz grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 38
Range_Domain_Maximum: 80
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Polycrystalline Quartz
Attribute_Definition: Number of polycrystalline quartz grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 8
Range_Domain_Maximum: 25
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Plagioclase
Attribute_Definition: Number of plagioclase feldspar grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 28
Range_Domain_Maximum: 58
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: K-Feldspar
Attribute_Definition: Number of alkali feldspar grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Sedimentary Lithic
Attribute_Definition:
Number of sedimentary lithic grains (sandstone, siltstone, mudstone, chert) counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 104
Range_Domain_Maximum: 181
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Volcanic Lithic
Attribute_Definition: Number of volcanic lithic grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 10
Range_Domain_Maximum: 27
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Carbonate/Bioclast
Attribute_Definition: Number of carbonate and bioclast grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 182
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Pyroxene/Hornblende/Opaques
Attribute_Definition:
Number of pyroxene, hornblende and opaque grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 5
Range_Domain_Maximum: 39
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Biotite
Attribute_Definition: Number of biotite grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 5
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Total Count
Attribute_Definition: total sum of grains counted on grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 323
Range_Domain_Maximum: 408
Attribute_Units_of_Measure: count
Attribute:
Attribute_Label: Percent Quartz
Attribute_Definition:
Relative percentages of quartz qrains normalized to sum of quartz, feldspar, and lithic counts. Lithic category includes sedimentary lithic, chert, and volcanic lithic grains. Quartz category includes both monocrystalline and polycrystalline grains. Feldspar category includes both plagioclase and K-feldspar grains.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 22
Range_Domain_Maximum: 34
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Percent Feldspar
Attribute_Definition:
Relative percentages of feldspar grains normalized to sum of quartz, feldspar, and lithic counts. Lithic category includes sedimentary lithic, chert, and volcanic lithic grains. Quartz category includes both monocrystalline and polycrystalline grains. Feldspar category includes both plagioclase and K-feldspar grains.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 13
Range_Domain_Maximum: 27
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Percent Lithics
Attribute_Definition:
Relative percentages of lithic grains normalized to sum of quartz, feldspar, and lithic counts. Lithic category includes sedimentary lithic, chert, and volcanic lithic grains. Quartz category includes both monocrystalline and polycrystalline grains. Feldspar category includes both plagioclase and K-feldspar grains.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 47
Range_Domain_Maximum: 64
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Percent Heavy Minerals
Attribute_Definition: Relative percentages of heavy minerals in grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1.2
Range_Domain_Maximum: 11.2
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Percent Bioclasts
Attribute_Definition: Relative percentages of bioclasts in grain mount.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 3.5
Range_Domain_Maximum: 46.1
Attribute_Units_of_Measure: percent
Attribute:
Attribute_Label: Nearest Date
Attribute_Definition:
Age-range determined for nearest dated sediment within core. Radiocarbon ages are given in calibrated years before present and optically stimulated luminescence (OSL) ages are given in kilo-annum.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 1794
Range_Domain_Maximum: 12195
Attribute_Units_of_Measure: years before present.
Attribute:
Attribute_Label: Dating Method
Attribute_Definition: Dating method used for values in the Nearest Date attribute
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: radiocarbon
Enumerated_Domain_Value_Definition:
sample age determined with radiocarbon analysis. Ages determined with radiocarbon in “Nearest Date” attribute are in calibrated years before present.
Enumerated_Domain_Value_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: OSL
Enumerated_Domain_Value_Definition:
sample age determined with optically stimulated luminescence (OSL) analysis. Ages determined by OSL in the “Nearest Date” attribute are in kilo annum.
Enumerated_Domain_Value_Definition_Source: USGS
Overview_Description:
Entity_and_Attribute_Overview:
The first line of the csv file is a header line. Location information for each sediment core can be found in the 2019-651-FA_cores_locations shapefile included in this data release.
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:
Point-count data are provided in a csv format (2019-651-FA_core_pointcount.csv) accompanied by CSDGM FGDC compliant metadata.
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_Date: 2022
Format_Information_Content: Comma-delimited text file of mineralogical point-count data.
Transfer_Size: 0.002
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/P9A0U8J7
Access_Instructions:
Data can be downloaded using the Network_Resource_Name link and scrolling to the Environmental Data section.
Fees: None.
Technical_Prerequisites:
Mineralogical point count data in comma-delimited text format can be viewed with any standard table editing software (for example, Excel, Numbers).
Metadata_Reference_Information:
Metadata_Date: 20230104
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

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