Dataset: IODP360 - Drill fluid contamination testing
Deployment: IODP-360

View Data: For data, See Dataset Metadata Page: https://www.bco-dmo.org/dataset/810923

Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Contact:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

BCO-DMO Data Manager:

Karen Soenen (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Collaborative Research: Delineating The Microbial Diversity and Cross-domain Interactions in The Uncharted Subseafloor Lower Crust Using Meta-omics and Culturing Approaches (Subseafloor Lower Crust Microbiology)

Version:

Deployment Synonyms:

JOIDES Resolution, International Ocean Discovery Program (IODP) Expedition 360 (X360)

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Description

Supplementary Table 2: Drill fluid contamination testing. GC mass spectrometry measurements of concentrations of the tracers PFMD and PFMC in drilling fluid and sample materials.

Methods & Sampling

Dataset acquisition description

Contamination controls. Rotary coring contaminates the exteriors of core samples due to the circulation of drilling fluids (a mixture of Sepiolite and surface seawater) around the drilling bits. Extreme care was taken to remove/minimize this contamination and to not introduce new contamination during sample handling and analysis. During IODP Expedition 360, a new less volatile tracer, perfluoromethyldecalin (PFMD), was successfully tested and calibrated and thus used to quantify intrusion of drilling fluids into the interior of samples.

Data Processing Description

Dataset Processing Description

BCO-DMO processing notes:

Adjusted column names to comply with database requirements

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1658031	NSF Division of Ocean Sciences

Instruments

Gas Chromatograph

Supplied Name: Gas Chromatograph (GC) Hewlett Packard 5890

Supplied Description:

Instrument Type

Generic Name: Gas Chromatograph

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/

Generic Description:

Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC)

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Tracer	PFMB or PMCH tracer	unitless	sample_descrip
Sample	Sample ID	unitless	sample
Replicate	Replicate number	unitless	replicate
Drilling_Fluid	Tracer concentration in drilling fluid	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used	no_bcodmo_term
Core_Exterior_Before_Cleaning	Tracer concentration on core exterior before cleaning	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used	no_bcodmo_term
Core_Exterior_After_Cleaning	Tracer concentration on core exterior after cleaning	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used	no_bcodmo_term
Core_Interior	Tracer concentration on core	part per billion (ppb); Abbreviations: bd=below detection limit; ad=above detection limit/-a: after 4 washes; -b: after 3 washes ; -c: no core liner used	no_bcodmo_term

Database

Contribute Data

Dataset: IODP360 - Drill fluid contamination testing
Deployment: IODP-360

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: IODP360 - Drill fluid contamination testingDeployment: IODP-360

Dataset acquisition description

Dataset Processing Description

Dataset: IODP360 - Drill fluid contamination testing
Deployment: IODP-360