First documentation of the Ordovician Guttenberg δ13C excursion (GICE) in Asia: chemostratigraphy of the Pagoda and Yanwashan formations in southeastern China
- 5 November 2008
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 146 (1) , 1-11
- https://doi.org/10.1017/s0016756808005748
Abstract
The only published δ13C data from the Ordovician of China are from the Lower and Upper Ordovician, and only the latter records include a significant excursion, namely the Hirnantian excursion (HICE). Our recent chemostratigraphic work on the Upper Ordovician (Sandbian–Katian) Pagoda and Yanwashan formations at several localities on the Yangtze Platform and Chiangnan (Jiangnan) slope belt has resulted in the recognition of a positive δ13C excursion that has values of ~+1.5‰ above baseline values. This excursion starts a few metres above a stratigraphic interval with B. alobatus Subzone conodonts as well as graptolites of the N. gracilis Zone. The distinctive conodonts Amorphognathus aff. Am. ventilatus and Hamarodus europaeus first occur at, or very near, the excursion interval. Because these conodonts appear in the stratigraphic interval of the Guttenberg δ13C excursion (GICE) in Estonia, we identify the Chinese excursion as the GICE. This is the first record of the GICE in the entire Asian continent. It confirms that GICE is a global excursion and provides an illustration of how δ13C chemostratigraphy, combined with new biostratigraphic data, solves the problem of the previously controversial age of the Pagoda Formation and how this classical stratigraphic unit correlates with the Baltoscandian and North American successions.Keywords
This publication has 29 references indexed in Scilit:
- LATE ORDOVICIAN TO EARLY SILURIAN CONODONT FAUNAS FROM THE KOLYMA TERRANE, OMULEV MOUNTAINS, NORTHEAST RUSSIA, AND THEIR PALEOBIOGEOGRAPHIC AFFINITYJournal of Paleontology, 2007
- Post-Hunnebergian Ordovician carbon isotope trend in Baltoscandia, its environmental implications and some similarities with that of NevadaPalaeogeography, Palaeoclimatology, Palaeoecology, 2007
- Upper Darriwilian graptolite and conodont zonation in the global stratotype section of the Darriwilian stage (Ordovician) at Huangnitang, Changshan, Zhejiang, ChinaPalaeoworld, 2006
- First record of the Hirnantian (Upper Ordovician) δ13C excursion in the North American Midcontinent and its regional implicationsGeological Magazine, 2006
- Late Ordovician (Turinian–Chatfieldian) carbon isotope excursions and their stratigraphic and paleoceanographic significancePalaeogeography, Palaeoclimatology, Palaeoecology, 2004
- The Middle Caradoc Facies and Faunal Turnover in the Late Ordovician Baltoscandian palaeobasinPalaeogeography, Palaeoclimatology, Palaeoecology, 2004
- The Greatest Volcanic Ash Falls in the Phanerozoic: Trans-Atlantic Relations of the Ordovician Millbrig and Kinnekulle K-BentonitesThe Sedimentary Record, 2003
- High-resolution stable isotope stratigraphy of Upper Ordovician sequences: Constraints on the timing of bioevents and environmental changes associated with mass extinction and glaciationGSA Bulletin, 2003
- New isotopic data solving an old biostratigraphic problem: the age of the upper Ordovician brachiopod Holorhynchus giganteusJournal of the Geological Society, 1997
- Evidence For Isotopic Change Associated With Late Ordovician Glaciation, From Brachiopods and Marine Cements of Central SwedenPublished by Natural Resources Canada/CMSS/Information Management ,1991