Reconnaissance study of organic geochemistry and petrology of Paleozoic-Cenozoic potential hydrocarbon source rocks from the New Siberian Islands, Arctic Russia

verfasst von

Peter Sobolev, Dieter Franke, Christoph Gaedicke, Jolanta Kus, Georg Scheeder, Karsten Piepjohn, Christian Brandes, Martin Blumenberg, Benoit Mouly

Abstract

A reconnaissance study of potential hydrocarbon source rocks of Paleozoic to Cenozoic age from the highly remote New Siberian Islands Archipelago (Russian Arctic) was carried out. 101 samples were collected from outcrops representing the principal Paleozoic-Cenozoic units across the entire archipelago. Organic petrological and geochemical analyses (vitrinite reflectance measurements, Rock-Eval pyrolysis, GC-MS) were undertaken in order to screen the maturity, quality and quantity of the organic matter in the outcrop samples. The lithology varies from continental sedimentary rocks with coal particles to shallow marine carbonates and deep marine black shales. Several organic-rich intervals were identified in the Upper Paleozoic to Lower Cenozoic succession. Lower Devonian shales were found to have the highest source rock potential of all Paleozoic units. Middle Carboniferous-Permian and Triassic units appear to have a good potential for natural gas formation. Late Mesozoic (Cretaceous) and Cenozoic low-rank coals, lignites, and coal-bearing sandstones also display a potential for gas generation. Kerogen type III (humic, gas-prone) dominates in most of the samples, and indicates deposition in lacustrine to coastal paleoenvironments. Most of the samples (except some of Cretaceous and Paleogene age) reached oil window maturities, whereas the Devonian to Carboniferous units shared a maturity mainly within the gas window.

Organisationseinheit(en)

Institut für Geologie

Externe Organisation(en)

Russian Geological Research Institute (VSEGEI)
Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)
TOTAL SA

Typ

Artikel

Journal

Marine and petroleum geology

Band

78

Seiten

30-47

Anzahl der Seiten

18

ISSN

0264-8172

Publikationsdatum

12.2016

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Ozeanographie, Geophysik, Geologie, Ökonomische Geologie, Stratigraphie

Ziele für nachhaltige Entwicklung

SDG 14 – Lebensraum Wasser

Elektronische Version(en)

https://doi.org/10.1016/j.marpetgeo.2016.09.005 (Zugang: Geschlossen)