Environmental tolerance and range offset of Treptichnus pedum: Implications for the recognition of the Ediacaran-Cambrian boundaryстатья из журнала
Аннотация: Research Article| April 01, 2013 Environmental tolerance and range offset of Treptichnus pedum: Implications for the recognition of the Ediacaran-Cambrian boundary Luis A. Buatois; Luis A. Buatois * 1Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon SK S7N 5E2, Canada *E-mails: luis.buatois@usask.ca; naturaviva@universe.co.za; gagerms@global.co.za. Search for other works by this author on: GSW Google Scholar John Almond; John Almond * 2Natura Viva cc, Cape Town 8001, South Africa *E-mails: luis.buatois@usask.ca; naturaviva@universe.co.za; gagerms@global.co.za. Search for other works by this author on: GSW Google Scholar Gerard J.B. Germs Gerard J.B. Germs * 3Private Bag X607, Oudtshoorn 6620, South Africa *E-mails: luis.buatois@usask.ca; naturaviva@universe.co.za; gagerms@global.co.za. Search for other works by this author on: GSW Google Scholar Author and Article Information Luis A. Buatois * 1Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon SK S7N 5E2, Canada John Almond * 2Natura Viva cc, Cape Town 8001, South Africa Gerard J.B. Germs * 3Private Bag X607, Oudtshoorn 6620, South Africa *E-mails: luis.buatois@usask.ca; naturaviva@universe.co.za; gagerms@global.co.za. Publisher: Geological Society of America Received: 08 Aug 2012 Revision Received: 13 Nov 2012 Accepted: 18 Nov 2012 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2013 Geological Society of America Geology (2013) 41 (4): 519–522. https://doi.org/10.1130/G33938.1 Article history Received: 08 Aug 2012 Revision Received: 13 Nov 2012 Accepted: 18 Nov 2012 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Luis A. Buatois, John Almond, Gerard J.B. Germs; Environmental tolerance and range offset of Treptichnus pedum: Implications for the recognition of the Ediacaran-Cambrian boundary. Geology 2013;; 41 (4): 519–522. doi: https://doi.org/10.1130/G33938.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Ediacaran-Cambrian boundary, arguably the most important in the stratigraphic column, is based on the first appearance of the ichnospecies Treptichnus pedum. However, most trace fossils have long temporal ranges and occur in a narrow range of facies, and are typically of little use in biostratigraphic studies. Therefore, understanding the environmental tolerance and range offset of T. pedum is essential to evaluate the reliability of the Ediacaran-Cambrian boundary. Our study in Fortunian units in the Vanrhynsdorp Group of South Africa shows a broad environmental tolerance for the T. pedum producer in shallow-marine clastic settings. This ichnotaxon is not only present in low-energy offshore wave-dominated marine settings, but it also occurs at considerably shallower water in intertidal and shallow-subtidal zones of tide-dominated systems. T. pedum seems to have high values of peak abundance in the upper offshore and lower intertidal sand flats. In many sections, the Ediacaran-Cambrian transition occurs in successions containing a sequence boundary due to incision of valleys that were filled with coarse-grained deposits of fluvial or estuarine origin, both representing facies that are unsuitable for T. pedum. The range offset of this ichnotaxon is typically greater above sequence boundaries and within transgressive systems tracts, providing some constrains on its use. However, the broad environmental tolerance of T. pedum in shallow-marine clastic settings supports evolutionary innovations rather than facies controls as the main mechanism underlying the observed vertical pattern of distribution of this ichnospecies in the relatively continuous succession of the Ediacaran-Cambrian boundary Global Standard Stratotype Section and Point. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Год издания: 2013
Авторы: Luís A. Buatois, John Almond, Gerard J.B. Germs
Издательство: Geological Society of America
Источник: Geology
Ключевые слова: Geology and Paleoclimatology Research, Paleontology and Stratigraphy of Fossils, Geological formations and processes
Открытый доступ: closed
Том: 41
Выпуск: 4
Страницы: 519–522