Journal article

Neoproterozoic chemostratigraphy and correlation of the Port Askaig glaciation, Dalradian Supergroup of Scotland

Abstract:: The δ13C of preglacial carbonates beneath the glaciogenic Port Askaig Formation falls from +5‰ to negative values, while least-altered 87Sr/86Sr values are close to 0.7067. Postglacial 'cap carbonates' of the Bonahaven Formation begin with negative δ13C(carb) values, jumping sharply to +11.7‰ near the top, which we correlate with excursions above the Elbobreen-Wilsonbreen glaciations of Svalbard and putative Sturtian (not Varanger) glaciations elsewhere, dated at c. 720 Ma. Much of the succeeding Terminal Neoproterozoic is missing in NE Svalbard and East Greenland, raising doubts about their use for global Sr and C isotope curves in the Neoproterozoic.

Publication status:: Published

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APA Style

Brasier, M., & Shields, G. (2000). Neoproterozoic chemostratigraphy and correlation of the Port Askaig glaciation, Dalradian Supergroup of Scotland. JOURNAL OF THE GEOLOGICAL SOCIETY, 157(5), 909–914.

MLA Style

Brasier, M., and G. Shields. “Neoproterozoic Chemostratigraphy and Correlation of the Port Askaig Glaciation, Dalradian Supergroup of Scotland.” JOURNAL OF THE GEOLOGICAL SOCIETY, vol. 157, no. 5, 2000, pp. 909–14.

Chicago Style

Brasier, M, and G Shields. 2000. “Neoproterozoic Chemostratigraphy and Correlation of the Port Askaig Glaciation, Dalradian Supergroup of Scotland.” JOURNAL OF THE GEOLOGICAL SOCIETY 157 (5): 909–14.
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Publisher copy:: 10.1144/jgs.157.5.909

Authors

+ Brasier, M More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Earth Sciences
Role:: Author

+ Shields, G More by this author

Role:: Author

Journal:: JOURNAL OF THE GEOLOGICAL SOCIETY More from this journal
Volume:: 157
Issue:: 5
Pages:: 909-914
Publication date:: 2000-09-01
DOI:: 10.1144/jgs.157.5.909
EISSN:: 2041-479X
ISSN:: 0016-7649

Language:: English
Keywords:: chemostratigraphy

Neoproterozoic

Dalradian

glaciation
Pubs id:: pubs:82251
UUID:: uuid:03fead00-c98f-4c3d-9c08-ffa46082c96a
Local pid:: pubs:82251
Source identifiers:: 82251
Deposit date:: 2012-12-19

Terms of use

Copyright date:: 2000

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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