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A high-resolution nonmarine record of an early Danian hyperthermal event, Boltysh crater, Ukraine

Gilmour, Iain; Gilmour, Mabs; Jolley, David; Kelley, Simon; Kemp, David; Daly, Robert and Watson, Jonathan (2013). A high-resolution nonmarine record of an early Danian hyperthermal event, Boltysh crater, Ukraine. Geology, 41(7) pp. 783–786.

URL: http://geology.gsapubs.org/content/early/2013/05/1...
DOI (Digital Object Identifier) Link: https://doi.org/10.1130/G34292.1
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Abstract

Carbon isotope and palynological analysis of the fine-grained organic carbon–rich lacustrine sediments that filled the Cretaceous- Paleogene (K-Pg) boundary–age Boltysh impact crater (Ukraine) preserve a uniquely complete and detailed record of a negative carbon isotope excursion in an expanded section of the early Danian that we estimate lasted as long as ~340 k.y. Palynological assemblages recovered through the excursion reflect the increasing dominance of thermophylic Normapolles species, indicating an increasingly warm and dry climate, while those recovered below and above the excursion reflect a cooler and wetter climate. The record of a transient warming event (hyperthermal) in the early Danian at Boltysh has strong simi- larities with the Dan-C2 hyperthermal event recorded in marine sedi- ments in Tethys and the Atlantic Ocean, and suggests that there were profound environmental changes occurring on a global scale shortly after the K-Pg boundary.

Item Type: Article
Copyright Holders: 2013 Geological Society of America
ISSN: 0091-7613
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetNE/D005043/1NERC (Natural Environment Research Council)
Keywords: hyperthermal; carbon isotope; palynology; warming; Danian; Cretaceous-Paleogene; Boltysh impact structure
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Related URLs:
Item ID: 37533
Depositing User: Iain Gilmour
Date Deposited: 20 May 2013 08:53
Last Modified: 29 Nov 2016 17:09
URI: http://oro.open.ac.uk/id/eprint/37533
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