d13C chemostratigraphy in the Lower-Middle Ordovician succession of Oland (Sweden) and the global significance of the MDICE

被引：34

作者：

Calner, Mikael ^{[1
]}

Lehnert, Oliver ^{[1
,2
]}

Wu, Rongchang ^{[1
]}

Dahlqvist, Peter ^{[3
]}

Joachimski, Michael M. ^{[2
]}

机构：

[1] Lund Univ, Dept Geol, SE-22362 Lund, Sweden

[2] Univ Erlangen Nurnberg, GeoZentrum Nordbayern, D-91054 Erlangen, Germany

[3] Geol Survey Sweden, SE-22738 Lund, Sweden

来源：

GFF | 2014年 / 136卷 / 01期

基金：

瑞典研究理事会;

关键词：

Ordovician; Sweden; CRE; Evae transgression; MDICE; BIODIVERSIFICATION EVENT GOBE; ARGENTINE PRECORDILLERA; EXCURSION MDICE; ISOTOPE; BALTOSCANDIA; GEOCHEMISTRY;

D O I：

10.1080/11035897.2014.901409

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Based on the Tingskullen drillcore, we present the first continuous carbon isotope stratigraphy from the Lower-Middle Ordovician orthoceratite limestone of oland, Sweden. The extremely condensed Tremadocian and Floian stages include large gaps as well as the Ceratopyge Regressive Event and the widespread Evae transgression accompanied by prominent shifts in the C-13 record. The Dapingian and Darriwilian stages are characterised by low sedimentation rates and a relatively complete sedimentary record. A total of 99 whole-rock samples were analysed for carbon isotope geochemistry from the Ordovician part of the succession (46m thick). The most striking anomaly detected is the middle Darriwilian isotope carbon excursion (MDICE) that appears unusually well developed and complete for the region, and thus forms an important proxy for intercontinental correlation of the succession.

引用

页码：48 / 54

页数：7

共 28 条

[1] Middle and Upper Ordovician carbon isotope chemostratigraphy in Baltoscandia: A correlation standard and clues to environmental history [J].