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DOI	10.1016/j.palaeo.2019.03.035
	Early Silurian δ13Corg excursions in the foreland basin of Baltica; both familiar and surprising
	Hammarlund E.U.; Loydell D.K.; Nielsen A.T.; Schovsbo N.H.
发表日期	2019
ISSN	0031-0182
起始页码	126
结束页码	135
卷号	526
英文摘要	The Sommerodde-1 core from Bornholm, Denmark, provides a nearly continuous sedimentary archive from the Upper Ordovician through to the Wenlock Series (lower Silurian), as constrained by graptolite biostratigraphy. The cored mudstones represent a deep marine depositional setting in the foreland basin fringing Baltica and we present high-resolution data on the isotopic composition of the section's organic carbon (δ13Corg). This chemostratigraphical record is correlated with previously recognized δ13C excursions in the Upper Ordovician–lower Silurian, including the Hirnantian positive isotope carbon excursion (HICE), the early Aeronian positive carbon isotope excursion (EACIE), and the early Sheinwoodian positive carbon isotope excursion (ESCIE). A new positive excursion of high magnitude (~4‰)is discovered in the Telychian Oktavites spiralis Biozone (lower Silurian)and we name it the Sommerodde Carbon Isotope Excursion (SOCIE). The SOCIE appears discernible in δ13Ccarb data from Latvian and Estonian cores but it is not yet widely recognized. However, the magnitude of the excursion within the deep, marine, depositional setting, represented by the Sommerodde-1 core, suggests that the SOCIE reflects a significant event. In addition, the chemostratigraphical record of the Sommerodde-1 core reveals the negative excursion at the transition from the Aeronian to Telychian stages (the ‘Rumba low’), and suggests that the commencement of the EACIE at the base of the Demirastrites triangulatus Biozone potentially is a useful chemostratigraphical marker for the base of the Aeronian Stage. © 2019 Elsevier B.V.
英文关键词	Chemostratigraphy; Oktavites spiralis Biozone; Rumba low; SOCIE; Sommerodde-1 core; δ13Corg
语种	英语
scopus关键词	biozonation; carbon isotope; chemostratigraphy; core analysis; foreland basin; graptolite; Hirnantian; isotopic composition; Ordovician; Ordovician-Silurian boundary; organic carbon; Silurian; Bornholm; Denmark; Hovedstaden
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150950
作者单位	Translational Cancer Research, Laboratory Medicine, Lund University, Medicon Village 404:C3, Scheelevägen 2, Lund, SE-223 63, Sweden; Nordic Center for Earth Evolution, University of Southern Denmark, Campusvej 55, Odense M, 5230, Denmark; School of Earth and Environmental Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL, United Kingdom; Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, Copenhagen, DK-13501350, Denmark; Geological Survey of Denmark and Greenland, Øster Voldgade 10, Copenhagen K, DK-1350, Denmark
推荐引用方式 GB/T 7714	Hammarlund E.U.,Loydell D.K.,Nielsen A.T.,et al. Early Silurian δ13Corg excursions in the foreland basin of Baltica; both familiar and surprising[J],2019,526.
APA	Hammarlund E.U.,Loydell D.K.,Nielsen A.T.,&Schovsbo N.H..(2019).Early Silurian δ13Corg excursions in the foreland basin of Baltica; both familiar and surprising.Palaeogeography, Palaeoclimatology, Palaeoecology,526.
MLA	Hammarlund E.U.,et al."Early Silurian δ13Corg excursions in the foreland basin of Baltica; both familiar and surprising".Palaeogeography, Palaeoclimatology, Palaeoecology 526(2019).