Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-15243-7 |
The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction | |
Gastaldo, Robert A.1; Kamo, Sandra L.2; Neveling, Johann3; Geissman, John W.4,5; Looy, Cindy V.6; Martini, Anna M.7 | |
2020-03-18 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada; South Africa |
英文摘要 | The current model for the end-Permian terrestrial ecosystem crisis holds that systematic loss exhibited by an abrupt turnover from the Daptocephalus to the Lystrosaurus Assemblage Zone (AZ; Karoo Basin, South Africa) is time equivalent with the marine Permian-Triassic boundary (PTB). The marine event began at 251.9410.037Ma, with the PTB placed at 251.902 +/- 0.024Ma (2 sigma). Radio-isotopic dates over this interval in the Karoo Basin were limited to one high resolution ash-fall deposit in the upper Daptocephalus AZ (253.48 +/- 0.15 (2 sigma) Ma) with no similar age constraints for the overlying biozone. Here, we present the first U-Pb CA-ID-TIMS zircon age (252.24 +/- 0.11 (2 sigma) Ma) from a pristine ash-fall deposit in the Karoo Lystrosaurus AZ. This date confirms that the lower exposures of the Lystrosaurus AZ are of latest Permian age and that the purported turnover in the basin preceded the end-Permian marine event by over 300 ka, thus refuting the previously used stratigraphic marker for terrestrial end-Permian extinction. p id=Par The end-Permian is associated with major changes in both marine and terrestrial biodiversity. Here, Gastaldo et al. present high resolution dating of the Lystrosaurus Assemblage Zone in the Karoo Basin, South Africa, demonstrating that the marine crisis did not mirror a coeval event on land. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000522032300005 |
WOS关键词 | SOUTH-AFRICA ; TRIASSIC BOUNDARY ; MASS EXTINCTION ; DAPTOCEPHALUS ; PB ; BIOSTRATIGRAPHY ; PRECISION ; ZIRCON ; THERAPSIDA ; MOUNTAINS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/249663 |
专题 | 资源环境科学 |
作者单位 | 1.Colby Coll, Dept Geol, Waterville, ME 04901 USA; 2.Univ Toronto, Dept Earth Sci, Jack Satterly Geochronol Lab, Toronto, ON M5S 3B1, Canada; 3.Council Geosci, Private Bag x112, ZA-0001 Pretoria, South Africa; 4.Univ Texas Dallas, Dept Geosci, Richardson, TX 75080 USA; 5.Univ New Mexico, Dept Earth & Planetary Sci, Albuquerque, NM 87131 USA; 6.Univ Calif Berkeley, Univ & Jepson Herbaria, Museum Paleontol, Dept Integrat Biol, 3060 Valley Life Sci Bldg 3140, Berkeley, CA 94720 USA; 7.Amherst Coll, Dept Geol, Amherst, MA 01002 USA |
推荐引用方式 GB/T 7714 | Gastaldo, Robert A.,Kamo, Sandra L.,Neveling, Johann,et al. The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Gastaldo, Robert A.,Kamo, Sandra L.,Neveling, Johann,Geissman, John W.,Looy, Cindy V.,&Martini, Anna M..(2020).The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction.NATURE COMMUNICATIONS,11(1). |
MLA | Gastaldo, Robert A.,et al."The base of the Lystrosaurus Assemblage Zone, Karoo Basin, predates the end-Permian marine extinction".NATURE COMMUNICATIONS 11.1(2020). |
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