Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B32033.1 |
Integrated delta C-13(carb), conodont, and graptolite biochemostratigraphy of the Silurian from the Illinois Basin and stratigraphic revision of the Bainbridge Group | |
McAdams, Neo E. B.1,6; Cramer, Bradley D.1,6; Bancroft, Alyssa M.2; Melchin, Michael J.3; Devera, Joseph A.4; Day, James E.5 | |
2019 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2019 |
卷号 | 131页码:335-352 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | The Illinois Basin of southwestern Illinois and southeastern Missouri contains one of the most extensive Silurian records in North America and is a potentially critical area for global sea-level and paleoclimatic/paleoceanographic studies. Unfortunately, the Silurian stratigraphy regionally remains understudied and often can only be correlated globally at series level. Silurian strata from southwestern Illinois and southeastern Missouri are currently assigned to the Sexton Creek Limestone, Seventy-Six Shale, St. Clair Limestone, and Moccasin Springs Formation. The latter three units are variously considered members of the Bainbridge Formation or formations within the Bainbridge Group. We advocate the formalization of the term Bainbridge at the group level throughout its area of use, composed of (in ascending order) the Seventy-Six Formation (raised in rank and geographically expanded herein), the St. Clair Formation (stratigraphically expanded herein), and the Moccasin Springs Formation with four members: the Greens Ferry, Sheppard Point, Lithium (proposed herein), and Randol members. The Bain-bridge Group is unconformably underlain by the Silurian Sexton Creek Formation and conformably overlain by the ?Pridoli-Devonian Bailey Formation. Herein, additional nomenclatural changes are presented to the Cason Formation of Arkansas as well. Integrated carbon isotope (delta C-13), conodont, and graptolite biochemostratigraphy of three localities in the southwestern Illinois and southeastern Missouri area indicate the presence of the early Sheinwoodian "Ireviken," Homerian "Mulde," and Ludfordian "Lau" positive carbon isotope excursions in the Bain-bridge Group (the first published consecutive occurrence from North America). The stratigraphic revisions presented in this study provide a consistent and widely applicable lithostratigraphic nomenclature for the Bainbridge Group throughout its areal extent. This study also provides the first detailed integrated biochemostratigraphic record of all three major Wenlock-Ludfordian delta C-13 excursions from this important Laurentian basin, and it enables the first precise correlation of the Bainbridge Group into the global Silurian chronostratigraphic scheme. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000454928000020 |
WOS关键词 | CARBON-ISOTOPE STRATIGRAPHY ; CHRONOSTRATIGRAPHIC CORRELATION ; LLANDOVERY-WENLOCK ; LATE ORDOVICIAN ; NORTH-AMERICA ; EVENT ; EVOLUTION ; EXCURSION ; BOUNDARY ; GOTLAND |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24785 |
专题 | 地球科学 |
作者单位 | 1.Univ Iowa, Dept Earth & Environm Sci, Iowa City, IA 52242 USA; 2.Indiana Univ, Indiana Geol & Water Survey, Bloomington, IN 47405 USA; 3.St Francis Xavier Univ, Dept Earth Sci, Antigonish, NS B2G 2W5, Canada; 4.Univ Illinois, Prairie Res Inst, Illinois State Geol Survey, Champaign, IL 61820 USA; 5.Illinois State Univ, Dept Geog Geol, Normal, IL 61790 USA; 6.Texas Tech Univ, Dept Geosci, POB 41053, Lubbock, TX 79409 USA |
推荐引用方式 GB/T 7714 | McAdams, Neo E. B.,Cramer, Bradley D.,Bancroft, Alyssa M.,et al. Integrated delta C-13(carb), conodont, and graptolite biochemostratigraphy of the Silurian from the Illinois Basin and stratigraphic revision of the Bainbridge Group[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2019,131:335-352. |
APA | McAdams, Neo E. B.,Cramer, Bradley D.,Bancroft, Alyssa M.,Melchin, Michael J.,Devera, Joseph A.,&Day, James E..(2019).Integrated delta C-13(carb), conodont, and graptolite biochemostratigraphy of the Silurian from the Illinois Basin and stratigraphic revision of the Bainbridge Group.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,131,335-352. |
MLA | McAdams, Neo E. B.,et al."Integrated delta C-13(carb), conodont, and graptolite biochemostratigraphy of the Silurian from the Illinois Basin and stratigraphic revision of the Bainbridge Group".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 131(2019):335-352. |
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