Abstract
This dataset contains organic geochemical data from southern Gulf of Mexico sediments collected in August 2015. It includes information on sediment biomarker concentrations and bulk organic parameters.
Purpose
These analyses were made to determine petroleum component composition of southern Gulf of Mexico sediments that were potentially impacted by the 1979 Ixtoc oil spill and to understand persistence, attenuation and transformation of hydrocarbon signatures in deep sea sediments over time.
Keywords
Oil spill, hydrocarbon contamination, Ixtoc-1, environmental organic geochemistry, biomarkers, hydrocarbon fate and transport, source rock analysis, Rock Eval
UDI
R4.x267.000:0017
Date
April 2018
Point of Contact
Name
Sara Lincoln
Organization
Pennsylvania State University / Department of Geosciences
Name
Katherine Haines Freeman
Organization
Pennsylvania State University / Department of Geosciences
Funding Source
RFP-4
DOI
10.7266/N7N877VT
Rights Information
This work is licensed under a
Creative Commons Public Domain Dedication 1.0 License.
Scholar Commons Citation
Lincoln, Sara. 2018. Organic geochemistry (hydrocarbon biomarkers and bulk organic properties) of seafloor sediments (depths 0-20 cm below seafloor) collected in the southern Gulf of Mexico in August 2015. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7N877VT
Comments
Supplemental Information
Site name; Latitude (decimal degrees N); Longitude (decimal degrees W); Replicate; Date sampled (MM/DD/YYYY); Date analyzed (MM/DD/YYYY); Upper sediment depth (cm below seafloor); Lower sediment depth (cm below seafloor); Total organic carbon (TOC, weight %); Volatile hydrocarbons (S1, mg hydrocarbon/g sediment); Nonvolatile organic matter (S2, mg hydrocarbon/g sediment); CO2 produced during pyrolysis of kerogen-like material (S3, mg CO2/g sediment); Temperature of maximum hydrocarbon generation during pyrolysis of organic matter (Tmax, deg C); Hydrogen index (HI, mg hydrocarbon/g total organic carbon); Oxygen index (OI, mg CO2/g total organic carbon)|Polar lipid extraction, silica gel chromatography, gas chromatography – mass spectrometry, liquid chromatography – mass spectrometry, pyrolysis, oxidation, Source Rock Analysis|GC-MS, LC-MS, Source Rock Analyzer|Sediments were typically sampled at 1 cm depth resolution.|GCMS: We report % variability for internal standards run daily during analysis|