Dataset: Stable C and O isotopes for Guaymas Basin and Sonora Margin sediments

Name: d13C and d18O isotopic data for carbonate nodules and sedimentary carbonates in Guaymas Basin and Sonora Margin sediments collected from R/V El Puma, leaving Guaymas on October 14, 2014 and returning to Mazatlan on October 27, 2014
Published: 2019-03-13
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.763715.1

Spatial Extent: N:27 E:-111 S:27 W:-111

Temporal Extent: 2014-10-14 - 2014-10-27

Project:

RAPID proposal: Site characterization cruise to document the active and extensive subsurface biosphere in the Guaymas Basin (RAPID Guaymas Basin)

Program:

Center for Dark Energy Biosphere Investigations (C-DEBI)

Principal Investigator:

Andreas Teske (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

Co-Principal Investigator:

Ana Christina Ravelo (University of California-Santa Cruz, UCSC)

Contact:

Ana Christina Ravelo (University of California-Santa Cruz, UCSC)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-03-13

Restricted:

Validated:

Yes

Current State:

Final no updates expected

d13C and d18O isotopic data for carbonate nodules and sedimentary carbonates in Guaymas Basin and Sonora Margin sediments collected from R/V El Puma, leaving Guaymas on October 14, 2014 and returning to Mazatlan on October 27, 2014

Abstract:

d13C and d18O isotopic data for carbonate nodules and sedimentary carbonates in Guaymas Basin and Sonora Margin sediments collected from R/V El Puma (the Pacific Coast research vessel of the Autonomous University of Mexico) from October 14, 2014 to October 27, 2014. Data for each core include: sample identification (core No., section number, cm within section, sample type), total sediment depth in cm, and d¹³C isotopic composition in permille. background = sediment around the nodule.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2019-03-13	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.763715.1	2019-06-04

Description

Data for each core include: sample identification (core No., section number, cm within section, sample type), total sediment depth in cm, and d¹³C isotopic composition in permille. background = sediment around the nodule.

Methods & Sampling

Sediment cores were obtained by Piston coring (using commercial PVC core liners) onboard R/V El Puma. Samples selected for carbonate isotope analyses were freeze-dried, homogenized, and roasted under vacuum to eliminate organic matter. Isotope analyses was performed on ~500 µg of sediment using a Kiel devise coupled with a Thermo MAT 253 gas ratio mass spectrometer at the University of California, Santa Cruz. Values are reported in the per mil (‰) notation relative to Vienna Pee Dee Belemnite (VPDB). Reproducibility of in-house standards is 0.07‰ for 18O and 0.03‰ for 13C.

Data Processing Description

BCO-DMO Processing:
- modified column headers (replaced spaces with underscores, renamed standard deviation columns for clarity);
- replaced "n.d." with "nd" ("no data").

Data Files

File
Stable_Isotopes.csv (Comma Separated Values (.csv), 2.42 KB) MD5:8e3b71071acfe5d2f72bbd4cd21c5476 Primary data file for dataset ID 763715

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0939564
NSF Division of Ocean Sciences	OCE-1449604

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Guaymas_2014		2014-10-14	R/V El Puma	Andreas Teske (Principal Investigator)	data info

Instruments

Isotope-ratio Mass Spectrometer

Supplied Name: Thermo MAT 253

Supplied Description:

Isotope analyses was performed on ~500 µg of sediment using a Kiel devise coupled with a Thermo MAT 253 gas ratio mass spectrometer at the University of California, Santa Cruz.

Instrument Type

Generic Name: Isotope-ratio Mass Spectrometer

Acronym: IR Mass Spec; IRMS

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/

Generic Description:

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).

Piston Corer

Supplied Name:

Supplied Description:

Instrument Type

Generic Name: Piston Corer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/51/

Generic Description:

The piston corer is a type of bottom sediment sampling device. A long, heavy tube is plunged into the seafloor to extract samples of mud sediment. A piston corer uses a "free fall" of the coring rig to achieve a greater initial force on impact than gravity coring. A sliding piston inside the core barrel reduces inside wall friction with the sediment and helps to evacuate displaced water from the top of the corer. A piston corer is capable of extracting core samples up to 90 feet in length.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Core_section_cm	Sample identification (core number, section number, cm within section)	unitless	sample
cm_in_core	Total sediment depth in centimeters	centimeters (cm)	depth_core
sample_type	Description of sample type	unitless	sample_type
d13C	d13C stable isotope values reported in per mil (‰) notation relative to Vienna Pee Dee Belemnite (VPDB)	per mil (‰)	d13C
d13C_stdev	Standard deviation of d13C	per mil (‰)	d13C
d18O	d18O stable isotope values reported in per mil (‰) notation relative to Vienna Pee Dee Belemnite (VPDB)	per mil (‰)	d18O
d18O_stdev	Standard deviation of d18O	per mil (‰)	d18O

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Dataset: Stable C and O isotopes for Guaymas Basin and Sonora Margin sediments

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Dataset: Stable C and O isotopes for Guaymas Basin and Sonora Margin sediments

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