Multiple δ13C excursions spanning the Cambrian explosion to the Botomian crisis in Siberia

Research Article| May 01, 1994 Multiple δ13C excursions spanning the Cambrian explosion to the Botomian crisis in Siberia M. D. Brasier; M. D. Brasier 1Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, United Kingdom Search for other works by this author on: GSW Google Scholar R. M. Corfield; R. M. Corfield 1Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, United Kingdom Search for other works by this author on: GSW Google Scholar L. A. Derry; L. A. Derry 2Centre Nationale de Recherches Scientifiques, Centre de Recherches Pétrographiques et Géochemiques, 54501 Vandoeuvre-les-Nancy, France Search for other works by this author on: GSW Google Scholar A. Yu. Rozanov; A. Yu. Rozanov 3Palaeontological Institute, 113 Profsoyuznaya, Moscow 117647, Russia Search for other works by this author on: GSW Google Scholar A. Yu. Zhuravlev A. Yu. Zhuravlev 3Palaeontological Institute, 113 Profsoyuznaya, Moscow 117647, Russia Search for other works by this author on: GSW Google Scholar Author and Article Information M. D. Brasier 1Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, United Kingdom R. M. Corfield 1Department of Earth Sciences, Oxford University, Parks Road, Oxford OX1 3PR, United Kingdom L. A. Derry 2Centre Nationale de Recherches Scientifiques, Centre de Recherches Pétrographiques et Géochemiques, 54501 Vandoeuvre-les-Nancy, France A. Yu. Rozanov 3Palaeontological Institute, 113 Profsoyuznaya, Moscow 117647, Russia A. Yu. Zhuravlev 3Palaeontological Institute, 113 Profsoyuznaya, Moscow 117647, Russia Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1994) 22 (5): 455–458. https://doi.org/10.1130/0091-7613(1994)022<0455:MCESTC>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation M. D. Brasier, R. M. Corfield, L. A. Derry, A. Yu. Rozanov, A. Yu. Zhuravlev; Multiple δ13C excursions spanning the Cambrian explosion to the Botomian crisis in Siberia. Geology 1994;; 22 (5): 455–458. doi: https://doi.org/10.1130/0091-7613(1994)022<0455:MCESTC>2.3.CO;2 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 New high-resolution δ13C data through the Lower Cambrian of Siberia reveal multiple, positive excursions coincident with phases in the "explosion" of invertebrate phyla (Nemakit-Daldynian to middle Botomian stages). Comparison of the δ18O and trace element (Mg, Fe, Mu, Sr) chemistry indicate that six new δ13C cycles are primary rather than diagenetic features, with potential for global correlation. Positive δ13C excursions up to +3‰ indicate that fractional organic carbon burial rates were high but variable through the Cambrian explosion. Values for δ13C dropped sharply from around +2.2‰ to -1.6‰ in Botomian time, coincident with mass extinction of the archaeocyathan reef biota. The rapid fluctuation of the δ13C signal and the temporal coincidence of the pronounced negative shift with the extinction event hint that the δ13C record may record productivity variations during the Early Cambrian radiation. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.