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Title Sum-
Institution Dataset ID
     data   graph     files  public delta 13C values from sediment cores collected on the Guaymas Basin Ridge flanks and the
Sonora Margin from R/V El Puma during October 2014
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The Dataset's Variables and Attributes

Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute NC_GLOBAL acquisition_description String All coring operations were performed using a the piston-coring system onboard
the R/V El Puma. See
[http://www.buques.unam.mx](\\"http://www.buques.unam.mx\\") for additional

All samples were measured by Dumas combustion performed on a Carlo Erba 1108
elemental analyzer coupled to a ThermoFinnigan Delt Plus XP isotope ratio mass
spectrometer (EA-IRMS). An in-house gelatin standard, Acetanilide, and an in-
house bulk sediment standard, \"Monterey Bay Sediment Standard\", were used in
all runs. Reproducibility of an in-house matrix-matched sediment standard is
<0.1\u2030 VPDB for ;\u03b4\u00b9\u00b3C and <0.2\u2030 AIR for
\u03b4\u00b9\u2075N. Data is corrected for blank, and for drift when

Bulk sediment \u03b4\u00b9\u2075N and elemental ratio data were collected
using 20mg samples in Sn capsules; organic \u03b4\u00b9\u00b3C and elemental
composition data were collected using 2.5mg samples of acidified sediment in
Sn capsules.
attribute NC_GLOBAL awards_0_award_nid String 554980
attribute NC_GLOBAL awards_0_award_number String OCE-0939564
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0939564 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL awards_1_award_nid String 626086
attribute NC_GLOBAL awards_1_award_number String OCE-1449604
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1449604 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_1_funding_source_nid String 355
attribute NC_GLOBAL awards_1_program_manager String Dr Thomas Janecek
attribute NC_GLOBAL awards_1_program_manager_nid String 511697
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String delta 13C values from sediment cores
collected on the Guaymas Basin Ridge flanks and the Sonora Margin during October 2014
PI: Andreas Teske (UNC Chapel Hill)
Co-PIs: Ivano Aiello (Moss Landing Marine Laboratories) & Ana Christina Ravelo (UC Santa Cruz)
Version date: 12-Dec-2019
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3 19 Dec 2019
attribute NC_GLOBAL date_created String 2019-12-12T19:55:32Z
attribute NC_GLOBAL date_modified String 2020-02-11T19:51:02Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.784291.1
attribute NC_GLOBAL Easternmost_Easting double -111.22955
attribute NC_GLOBAL geospatial_lat_max double 27.86855
attribute NC_GLOBAL geospatial_lat_min double 27.20745
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -111.22955
attribute NC_GLOBAL geospatial_lon_min double -111.70287
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/784291 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String IR Mass Spec
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 784302
attribute NC_GLOBAL instruments_0_description String The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Isotope-ratio Mass Spectrometer
attribute NC_GLOBAL instruments_0_instrument_nid String 469
attribute NC_GLOBAL instruments_0_supplied_name String ThermoFinnigan Delt Plus XP isotope ratio mass spectrometer (EA-IRMS)
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 784301
attribute NC_GLOBAL instruments_1_description String Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB01/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String Elemental Analyzer
attribute NC_GLOBAL instruments_1_instrument_nid String 546339
attribute NC_GLOBAL instruments_1_supplied_name String Carlo Erba 1108 elemental analyzer
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, chemical, core, core_sample, data, dataset, date, del13, depth, depth_cmbsf, depth_water, dmo, erddap, latitude, longitude, management, oceanography, office, orgmatter, Orgmatter_del13C, preliminary, sample, time
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/784291/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/784291 (external link)
attribute NC_GLOBAL Northernmost_Northing double 27.86855
attribute NC_GLOBAL param_mapping String {'784291': {'date': 'flag - time', 'lat': 'flag - latitude', 'long': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/784291/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of North Carolina at Chapel Hill
attribute NC_GLOBAL people_0_affiliation_acronym String UNC-Chapel Hill
attribute NC_GLOBAL people_0_person_name String Andreas P. Teske
attribute NC_GLOBAL people_0_person_nid String 51412
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Moss Landing Marine Laboratories
attribute NC_GLOBAL people_1_affiliation_acronym String MLML
attribute NC_GLOBAL people_1_person_name String Ivano Aiello
attribute NC_GLOBAL people_1_person_nid String 661682
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String University of California-Santa Cruz
attribute NC_GLOBAL people_2_affiliation_acronym String UC Santa Cruz
attribute NC_GLOBAL people_2_person_name String Ana Christina Ravelo
attribute NC_GLOBAL people_2_person_nid String 661684
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Shannon Rauch
attribute NC_GLOBAL people_3_person_nid String 51498
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String RAPID Guaymas Basin,C-DEBI Guaymas Subseafloor Life
attribute NC_GLOBAL projects_0_acronym String RAPID Guaymas Basin
attribute NC_GLOBAL projects_0_description String Description from NSF project abstract:
The Guaymas Basin in the central Gulf of California is an active tectonic spreading center overlain with thick, organic-rich sediments. In contrast to typical deep-water, mid-ocean ridge spreading centers that have very focused magmatism and little or no sediment, magmatism in the Guaymas Basis is more broadly distributed. This broadly-distributed magmatism significantly expands the fraction of organic-rich sediments that may be subject to alteration by the magmatic heat and thus it greatly expands the range of environments that support hydrocarbon generation and microbial populations in the sediments. Recognition that magmatism is not confined to the spreading axis, but instead is distributed throughout Guaymas Basin, suggests that models for the natural sequestration of carbon, the formation of oceanic crust, and life in the subsurface in marginal rift basins should be reconsidered as this has implications for the long-term removal of atmospheric carbon dioxide (and hence potential climatic implications). The Principal Investigator of this RAPID proposal is a lead proponent on an International Ocean Discovery Program (IODP) proposal to study this system in depth through scientific ocean drilling. To properly plan this expensive IODP expedition, additional site characterization gained from sediment sampling and seismic data is required. This proposal requests funds for the Principal Investigator to participate on an already planned site survey cruise aboard the Mexican Research Vessel (RV) El Puma. The results from this cruise will provide valuable data, at an exceptionally low investment, to guide decisions about potential future scientific drilling in the Guaymas Basin.
This RAPID proposal requests funds for the Principal Investigator to participate on a Mexican site survey cruise in October 2014 on RV El Puma to collect five-meter gravity cores of an extensive sediment transect across the Guaymas Basin and to integrate sequencing-based microbial community analyses of subsurface bacteria and archaea with biogechemical characterizations of these subsurface sediments. Gravity coring and microbial community analysis will target cold non-hydrothermal sediments as well as off-axis hydrothermally-influenced sediments. The gravity coring campaign and the geochemistry/microbiology studies are coordinated with heatflow measurements and extensive 2D seismic analysis and high-resolution 3D seismic mapping by other planned Mexican and German cruises. This multi-pronged strategy will deliver the additional data and complete the site characterizations that are required to properly plan a potential IODP drilling expedition by the JOIDES Resolution.
attribute NC_GLOBAL projects_0_end_date String 2015-08
attribute NC_GLOBAL projects_0_geolocation String Guaymas Basin
attribute NC_GLOBAL projects_0_name String RAPID proposal: Site characterization cruise to document the active and extensive subsurface biosphere in the Guaymas Basin
attribute NC_GLOBAL projects_0_project_nid String 626087
attribute NC_GLOBAL projects_0_start_date String 2014-09
attribute NC_GLOBAL projects_1_acronym String C-DEBI Guaymas Subseafloor Life
attribute NC_GLOBAL projects_1_description String Project description from C-DEBI:
The Guaymas Basin in the Gulf of California is a young marginal rift basin characterized by active seafloor spreading and rapid deposition of organic-rich sediments, characterized by extensive temperature and geochemical gradients. Deeply emplaced volcanic sills originating at the spreading center indurate and altered their surrounding sediment matrix, and shape hydrothermal circulation patterns (Einsele et al. 1980). Hydrothermal alteration and mobilization re-injects buried carbon into the biosphere (esp. as hydrocarbons and methane), a process with climate history relevance (Peter et al. 1991, Lizarralde et al. 2011). Subsurface microbial populations can intercept and process these hydrothermally generated and mobilized carbon sources (Teske et al. 2014). In support of a new IODP drilling proposal (No. 833), two Guaymas Basin site survey cruises in 2014 (RV El Puma) and 2015 (RV Sonne) are refining the 2D and 3D seismic structure of the Guaymas Basin subsurface, and collect gravity cores for up-to-date microbial and geochemical analyses. We propose combined microbiological, geochemical and sedimentological analyses to investigate subseafloor life and its environments using sediment cores that we collected on the site survey cruise with RV El Puma in October 2014.
This project was funded by a C-DEBI Research Grant.
attribute NC_GLOBAL projects_1_end_date String 2016-03
attribute NC_GLOBAL projects_1_geolocation String Guaymas Basin
attribute NC_GLOBAL projects_1_name String Characterizing subseafloor life and environments in the Guaymas Basin
attribute NC_GLOBAL projects_1_project_nid String 661678
attribute NC_GLOBAL projects_1_start_date String 2015-04
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 27.20745
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String delta 13C values from sediment cores P6, P10, P11, P12, and P13, collected on the Guaymas Basin Ridge flanks and the Sonora Margin. Sediment cores were collected from R/V El Puma, the Pacific Coast research vessel of the Autonomous University of Mexico, leaving Guaymas on October 14, 2014, and heading to Mazatlan on October 27, 2014.
attribute NC_GLOBAL time_coverage_end String 2014-10-22
attribute NC_GLOBAL time_coverage_start String 2014-10-19
attribute NC_GLOBAL title String delta 13C values from sediment cores collected on the Guaymas Basin Ridge flanks and the Sonora Margin from R/V El Puma during October 2014
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -111.70287
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable core   String  
attribute core bcodmo_name String core_id
attribute core description String Core identifier
attribute core long_name String Core
attribute core units String unitless
variable latitude   double  
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 27.20745, 27.86855
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude at sampling location; positive = north
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude   double  
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -111.70287, -111.22955
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude at sampling location; negative = west
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude source_name String long
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable depth_water   short  
attribute depth_water _FillValue short 32767
attribute depth_water actual_range short 667, 1859
attribute depth_water bcodmo_name String depth_w
attribute depth_water colorBarMaximum double 8000.0
attribute depth_water colorBarMinimum double -8000.0
attribute depth_water colorBarPalette String TopographyDepth
attribute depth_water description String Water depth at sampling location
attribute depth_water long_name String Depth
attribute depth_water standard_name String depth
attribute depth_water units String meters (m)
variable core_sample   byte  
attribute core_sample _FillValue byte 127
attribute core_sample actual_range byte 1, 19
attribute core_sample bcodmo_name String sample
attribute core_sample description String Identifier for the core sample
attribute core_sample long_name String Core Sample
attribute core_sample nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute core_sample units String unitless
variable depth_cmbsf   float  
attribute depth_cmbsf _FillValue float NaN
attribute depth_cmbsf actual_range float 1.5, 467.0
attribute depth_cmbsf bcodmo_name String depth_bsf
attribute depth_cmbsf colorBarMaximum double 8000.0
attribute depth_cmbsf colorBarMinimum double -8000.0
attribute depth_cmbsf colorBarPalette String TopographyDepth
attribute depth_cmbsf description String Depth in centimeters below seafloor
attribute depth_cmbsf long_name String Depth
attribute depth_cmbsf standard_name String depth
attribute depth_cmbsf units String centimeters (cm)
variable Orgmatter_del13C   float  
attribute Orgmatter_del13C _FillValue float NaN
attribute Orgmatter_del13C actual_range float -22.15, -20.12
attribute Orgmatter_del13C bcodmo_name String d13C
attribute Orgmatter_del13C description String del13C values for organic matter
attribute Orgmatter_del13C long_name String Orgmatter Del13 C
attribute Orgmatter_del13C units String per thousand
variable time   double  
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.4136768E9, 1.413936E9
attribute time axis String T
attribute time bcodmo_name String date
attribute time description String Sample date. Format: yyyy-mm-dd
attribute time ioos_category String Time
attribute time long_name String Date
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/ADATAA01/ (external link)
attribute time source_name String date
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01
attribute time units String seconds since 1970-01-01T00:00:00Z

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.

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