Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31775.1 |
A new stratigraphic framework built on U-Pb single-zircon TIMS ages and implications for the timing of the penultimate icehouse (Parana Basin, Brazil) | |
Griffis, Neil Patrick1; Mundil, Roland2; Montanez, Isabel Patricia1; Isbell, John3; Fedorchuk, Nicholas3; Vesely, Fernando4; Iannuzzi, Roberto5; Yin, Qing-Zhu1 | |
2018-05-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:848-858 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Brazil |
英文摘要 | The timing of the late Paleozoic glaciation and its terminal deglaciation in the Parana Basin, Brazil, is unconstrained and prohibits correlation of the Parana Basin ice record with other high-latitude Gondwanan and low-latitude contemporaneous records. Here, we reexamine the existing U-Pb framework for the Carboniferous-Permian Parana succession through high-precision, single-crystal chemical abrasion-thermal ionization mass spectrometry (CA-TIMS) analysis of individual zircons from tonsteins and subaerial volcanic ash deposits, which overlie sedimentary deposits with glacial indicators. The new ages document two distinct volcanic intervals and define a substantially new and revised chronostratigraphy for postglacial coal-bearing intervals in the southern Parana Basin. The new CA-TIMS ages further indicate that glaciation in south-central Gondwana, long considered to be Early Permian, is entirely Carboniferous in age and that terminal deglaciation in this key west-central Gondwanan basin occurred near the Permian-Carboniferous boundary. Single-crystal U-Pb CA-TIMS ages from the ice-proximal high-latitude basins of southern Africa and Australia are needed to test the synchronicity of late Paleozoic glaciation and deglaciation events throughout Gondwana, with implications for empirical- and model-based paleo-climate reconstructions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432588700009 |
WOS关键词 | RIO-BONITO FORMATION ; PALEOZOIC ICE-AGE ; GRANDE-DO-SUL ; COAL SUCCESSION ; SEQUENCE STRATIGRAPHY ; ITARARE SUBGROUP ; CLIMATE ; GLACIATION ; GEOCHRONOLOGY ; CONSTRAINTS |
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/24644 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA; 2.Berkeley Geochronol Ctr, Berkeley, CA 94709 USA; 3.Univ Wisconsin, Dept Geosci, Milwaukee, WI 53211 USA; 4.Univ Fed Parana, Dept Geol, BR-80060000 Curitiba, PR, Brazil; 5.Univ Fed Rio Grande do Sul, Dept Paleontol & Estratig, BR-90040060 Porto Alegre, RS, Brazil |
推荐引用方式 GB/T 7714 | Griffis, Neil Patrick,Mundil, Roland,Montanez, Isabel Patricia,et al. A new stratigraphic framework built on U-Pb single-zircon TIMS ages and implications for the timing of the penultimate icehouse (Parana Basin, Brazil)[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:848-858. |
APA | Griffis, Neil Patrick.,Mundil, Roland.,Montanez, Isabel Patricia.,Isbell, John.,Fedorchuk, Nicholas.,...&Yin, Qing-Zhu.(2018).A new stratigraphic framework built on U-Pb single-zircon TIMS ages and implications for the timing of the penultimate icehouse (Parana Basin, Brazil).GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,848-858. |
MLA | Griffis, Neil Patrick,et al."A new stratigraphic framework built on U-Pb single-zircon TIMS ages and implications for the timing of the penultimate icehouse (Parana Basin, Brazil)".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):848-858. |
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