Geochemistry of cretaceous rocks, Pakistan: I. Biomarker approach to assess thermal maturity of OM

The sediment samples from cretaceous sequences, Lower Indus basin, were analyzed using diagnostic biomarkers to predict the thermal maturity of organic matter. The sediments were tested for aliphatic biomarkers ratios, i.e. homohopanes and steranes isomerization ratios and carbon preference indices....

Full description

Saved in:
Bibliographic Details
Published in:Petroleum science and technology 2017-05, Vol.35 (9), p.875-882
Main Authors: Nazir, Arif, Fazeelat, Tahira
Format: Article
Language:English
Subjects:
Aliphatic compounds
Biomarkers
cretaceous
Diagnostic systems
Formations
Geochemistry
Goru
Hydrocarbons
Indus Basin
Isomerization
Peak oil
Sediments
Sembar
thermal maturity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The sediment samples from cretaceous sequences, Lower Indus basin, were analyzed using diagnostic biomarkers to predict the thermal maturity of organic matter. The sediments were tested for aliphatic biomarkers ratios, i.e. homohopanes and steranes isomerization ratios and carbon preference indices. These biomarker maturity parameters reveal that the Lower Goru (including its members Upper shale, Lower shale, and Talhar shale) and Sembar Formations in the Lower Indus Basin of Cretaceous age have reached the maturity level equivalent to the main zone of hydrocarbons generation, whereas Parh and Upper Goru Formations are immature and far from oil window. Geochemical analyses carried out stresses that hydrocarbons derived from the Sembar and Lower Goru Formations (particularly deeper Members) are within the zone of peak oil generation.
ISSN:1091-6466
1532-2459
DOI:10.1080/10916466.2017.1283523