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Evidence for perturbation of the carbon cycle in the Middle Frasnian punctata Zone (Late Devonian)

Yans, J.; Corfield, Richard; Racki, G. and Preat, A. (2007). Evidence for perturbation of the carbon cycle in the Middle Frasnian punctata Zone (Late Devonian). Geological Magazine, 144(2) pp. 263–270.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1017/S0016756806003037
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Abstract

New carbon isotopic data from the Devonian of Ardennes (Belgium) and partly from the Holy Cross Mountains (Poland) highlight an abrupt and high-amplitude negative excursion in the punctata conodont Zone. Published information from Moravia and China suggests that this Middle Frasnian negative excursion, jointly with the preceding large-scale positive shift, should be used as a global chemostratigraphic marker. Causation scenarios for this negative 'punctata Event' are correlated neither with major biota turnover nor major sea-level changes, but may be related to: (1) the Alamo Impact Event, that led to (2) the massive dissociation of methane hydrates and (3) the rapid onset of global warming.

Item Type: Journal Article
ISSN: 0016-7568
Keywords: punctata Event; Frasnian; Carbon isotopes; Ardennes; Belgium;
Academic Unit/Department: Science > Environment, Earth and Ecosystems
Item ID: 15696
Depositing User: Colin Smith
Date Deposited: 09 Apr 2009 08:47
Last Modified: 02 Dec 2010 20:26
URI: http://oro.open.ac.uk/id/eprint/15696
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