Direct Radiometric Dating of Hydrocarbon Deposits Using Rhenium-Osmium Isotopes-Reference-Cited by-同舟云学术

Direct Radiometric Dating of Hydrocarbon Deposits Using Rhenium-Osmium Isotopes

Published:2005-05-27 Issue:5726 Volume:308 Page:1293-1295
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Selby David¹²,Creaser Robert A.¹²

Affiliation:

1. Department of Earth and Atmospheric Science, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada.

2. Department of Earth Sciences, University of Durham, Durham DH1 3LE, UK.

Abstract

Rhenium-osmium (Re-Os) data from migrated hydrocarbons establish the timing of petroleum emplacement for the giant oil sand deposits of Alberta, Canada, at 112 ± 5.3 million years ago. This date does not support models that invoke oil generation and migration for these deposits in the Late Cretaceous. Most Re-Os data from a variety of deposits within the giant hydrocarbon system show similar characteristics, supporting the notion of a single source for these hydrocarbons. The Re-Os data disqualify Cretaceous rocks as the primary hydrocarbon source but suggest an origin from older source rocks. This approach should be applicable to dating oil deposits worldwide.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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