Proposed reassessment of the Cambrian GSSP
Since the time of its ratification in 1992, the Cambrian GSSP, 23 m above the base of Member 2A (Quaco Road Member) of the Chapel Island Formation, Fortune Head section, Newfoundland, Canada, has been challenged as posing an ambiguous correlation level. Difficulties have been encountered in precisel...
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Online Access: | https://lup.lub.lu.se/record/4699699 https://doi.org/10.1016/j.jafrearsci.2014.06.023 |
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ftulundlup:oai:lup.lub.lu.se:bd4e7d90-3ed0-464c-a501-b8328bcc2dec 2023-05-15T17:22:30+02:00 Proposed reassessment of the Cambrian GSSP Babcock, Loren Peng, Shanchi Zhu, Maoyan Xiao, Shuhai Ahlberg, Per 2014 https://lup.lub.lu.se/record/4699699 https://doi.org/10.1016/j.jafrearsci.2014.06.023 eng eng Elsevier https://lup.lub.lu.se/record/4699699 http://dx.doi.org/10.1016/j.jafrearsci.2014.06.023 wos:000341903700002 scopus:84906793292 Journal of African Earth Sciences; 98, pp 3-10 (2014) ISSN: 1464-343X Geology Terreneuvian Paleozoic GSSP Ediacaran Chronostratigraphy contributiontojournal/article info:eu-repo/semantics/article text 2014 ftulundlup https://doi.org/10.1016/j.jafrearsci.2014.06.023 2023-02-01T23:29:20Z Since the time of its ratification in 1992, the Cambrian GSSP, 23 m above the base of Member 2A (Quaco Road Member) of the Chapel Island Formation, Fortune Head section, Newfoundland, Canada, has been challenged as posing an ambiguous correlation level. Difficulties have been encountered in precisely correlating the horizon coinciding with the GSSP to strata on most paleocontinents, but especially to Siberia and South China (Gondwana). The GSSP point, which was intended to coincide with the base of the Treptichnus pedum (formerly Phycodes pedum or Trichophycus pedum) Ichnozone at the FAD of the trace fossil T. pedum, occurs above the first appearance of the trace in the stratotype section. Trace fossils of other forms in the stratotype provide a means of bracketing the position of the GSSP, but are imprecise guides for correlation globally. Other chronostratigraphic guides are unavailable at the stratotype because of a dominance of coarse siliciclastic lithologies and metamorphic overprint. To facilitate global correlation of the Cambrian base and ensure nomenclatural stability to the extent possible, discussion of the merits and perceived weaknesses of the Cambrian GSSP is sought. Possible solutions to the problems surrounding the current GSSP definition are addressed in hopes that the global scientific community will actively participate in developing a well-reasoned, practical solution that will stand the test of time. (C) 2014 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Newfoundland Siberia Lund University Publications (LUP) Canada Chapel Island ENVELOPE(-55.715,-55.715,52.467,52.467) Journal of African Earth Sciences 98 3 10 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology Terreneuvian Paleozoic GSSP Ediacaran Chronostratigraphy |
spellingShingle |
Geology Terreneuvian Paleozoic GSSP Ediacaran Chronostratigraphy Babcock, Loren Peng, Shanchi Zhu, Maoyan Xiao, Shuhai Ahlberg, Per Proposed reassessment of the Cambrian GSSP |
topic_facet |
Geology Terreneuvian Paleozoic GSSP Ediacaran Chronostratigraphy |
description |
Since the time of its ratification in 1992, the Cambrian GSSP, 23 m above the base of Member 2A (Quaco Road Member) of the Chapel Island Formation, Fortune Head section, Newfoundland, Canada, has been challenged as posing an ambiguous correlation level. Difficulties have been encountered in precisely correlating the horizon coinciding with the GSSP to strata on most paleocontinents, but especially to Siberia and South China (Gondwana). The GSSP point, which was intended to coincide with the base of the Treptichnus pedum (formerly Phycodes pedum or Trichophycus pedum) Ichnozone at the FAD of the trace fossil T. pedum, occurs above the first appearance of the trace in the stratotype section. Trace fossils of other forms in the stratotype provide a means of bracketing the position of the GSSP, but are imprecise guides for correlation globally. Other chronostratigraphic guides are unavailable at the stratotype because of a dominance of coarse siliciclastic lithologies and metamorphic overprint. To facilitate global correlation of the Cambrian base and ensure nomenclatural stability to the extent possible, discussion of the merits and perceived weaknesses of the Cambrian GSSP is sought. Possible solutions to the problems surrounding the current GSSP definition are addressed in hopes that the global scientific community will actively participate in developing a well-reasoned, practical solution that will stand the test of time. (C) 2014 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Babcock, Loren Peng, Shanchi Zhu, Maoyan Xiao, Shuhai Ahlberg, Per |
author_facet |
Babcock, Loren Peng, Shanchi Zhu, Maoyan Xiao, Shuhai Ahlberg, Per |
author_sort |
Babcock, Loren |
title |
Proposed reassessment of the Cambrian GSSP |
title_short |
Proposed reassessment of the Cambrian GSSP |
title_full |
Proposed reassessment of the Cambrian GSSP |
title_fullStr |
Proposed reassessment of the Cambrian GSSP |
title_full_unstemmed |
Proposed reassessment of the Cambrian GSSP |
title_sort |
proposed reassessment of the cambrian gssp |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://lup.lub.lu.se/record/4699699 https://doi.org/10.1016/j.jafrearsci.2014.06.023 |
long_lat |
ENVELOPE(-55.715,-55.715,52.467,52.467) |
geographic |
Canada Chapel Island |
geographic_facet |
Canada Chapel Island |
genre |
Newfoundland Siberia |
genre_facet |
Newfoundland Siberia |
op_source |
Journal of African Earth Sciences; 98, pp 3-10 (2014) ISSN: 1464-343X |
op_relation |
https://lup.lub.lu.se/record/4699699 http://dx.doi.org/10.1016/j.jafrearsci.2014.06.023 wos:000341903700002 scopus:84906793292 |
op_doi |
https://doi.org/10.1016/j.jafrearsci.2014.06.023 |
container_title |
Journal of African Earth Sciences |
container_volume |
98 |
container_start_page |
3 |
op_container_end_page |
10 |
_version_ |
1766109212978446336 |