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Extended abstract : re-os geochronology and chemostratigraphy of the maikop series source rocks of Eastern Azerbaijan.

Washburn, A. M. and Hudson, S. M. and Selby, D. and Abdullayev, N. and Shiyanova, N. (2018) 'Extended abstract : re-os geochronology and chemostratigraphy of the maikop series source rocks of Eastern Azerbaijan.', Journal of petroleum geology., 41 (3). pp. 411-416.

Abstract

The Oligocene – Miocene Maikop Series is a world‐class source interval and is the most important source rock for the petroleum systems of the South Caspian Basin and surrounding region. The Maikop is a thick (up to 3 km) succession of silty mudstones with intervals of high organic carbon content. However correlation of organic‐rich intervals within the South Caspian Basin and beyond to basins of the Eastern Paratethys is problematic. Current age constraints are based primarily on microfaunal assemblages, but the assemblages are lacking in precision and are sparsely dispersed. This study provides a numerical age datum for Maikopian strata that may be used to improve correlation of organic‐rich intervals both locally and regionally. The age date obtained was produced via Re‐Os isotope geochronology. Of the five sample suites analyzed, one Re‐Os data‐set yielded an isochron of 17.2 ± 3.2 Ma. Re‐Os data sets that failed to produce statistically meaningful isochrons provide qualitative age constraints by comparing calculated initial 187Os/188Os ratios from these samples to187Os/188Os ratios in seawater through time.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1111/jpg.12710
Publisher statement:This is the accepted version of the following article: Washburn, A. M., Hudson, S. M., Selby, D., Abdullayev, N. & Shiyanova, N. (2018). Extended abstract Re-os geochronology and chemostratigraphy of the maikop series source rocks of Eastern Azerbaijan. Journal of Petroleum Geology 41(3): 411-416 which has been published in final form at https://doi.org/10.1111/jpg.12710. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
Date accepted:No date available
Date deposited:29 June 2018
Date of first online publication:15 June 2018
Date first made open access:15 June 2019

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