Pyrolysis data of South Atlantic source rocks from 20 DSDP-ODP sites: Insight on source-rock potential ...

This data set consists of analytical results from the HAWK Pyrolysis and TOC instrument for 161 bulk samples from Mesozoic to Cenozoic strata at 20 DSDP-ODP sites in the South Atlantic region, from the Weddell Sea in the south to the Demerara Rise in the north, and in the Mozambique Ridge. Based on...

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Bibliographic Details
Main Authors: Setoyama, Eiichi, Greb, Matthias, Garel, Sylvain, Beti, Dhrupad, Kanungo, Sudeep
Format: Dataset
Language:unknown
Published: PANGAEA 2019
Subjects:
DSDP
IODP
ODP
Organic Geochemistry
source rock
South Atlantic
Event label
Latitude of event
Longitude of event
Sample code/label
DEPTH, sediment/rock
Carbon, organic, total
Hydrocarbon yield, S1 per unit sediment mass
Hydrocarbon yield, S2 per unit sediment mass
Carbon dioxide yield, S3 per unit sediment mass
Pyrolysis temperature maximum
Hydrogen index, mass HC, per unit mass total organic carbon
Oxygen index, mass CO2, per unit mass total organic carbon
Drilling/drill rig
DSDP/ODP/IODP sample designation
HAWK Pyrolysis
Leg14
Leg25
Leg36
Leg39
Leg40
Leg71
Leg72
Leg75
Leg113
Leg159
Leg207
Glomar Challenger
Joides Resolution
Deep Sea Drilling Project DSDP
Ocean Drilling Program ODP
Weddell
Weddell Sea
Online Access:https://dx.doi.org/10.1594/pangaea.907697
https://doi.pangaea.de/10.1594/PANGAEA.907697
Description
Summary:This data set consists of analytical results from the HAWK Pyrolysis and TOC instrument for 161 bulk samples from Mesozoic to Cenozoic strata at 20 DSDP-ODP sites in the South Atlantic region, from the Weddell Sea in the south to the Demerara Rise in the north, and in the Mozambique Ridge. Based on a revised chronostratigraphic and paleoenvironment framework (Setoyama and Kanungo, submitted), our pyrolysis results, combined with data published by previous studies, allow us to identify seven Mesozoic source-rock intervals: two in the Southern South Atlantic (SA), one in the Central SA and four in the Equatorial SA. Furthermore, these data also provide an estimate of the source-rock potential and quality of the identified intervals, which are influenced by depositional environments. A significant portion of the pyrolysis data is affected by the mineral matrix effect (MME) that artificially lowers the estimated potential and quality of source rocks. Further analyses are therefore required to correct the MME and ...

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