| Magnetostratigraphic dating of mammalian fossils in Junggar Basin, northwest China |
| |
| 作者姓名： | ZHANG Rui YUE LePing WANG JianQi |
| |
| 作者单位： | [1]Paleomagnetism and Geochronology Laboratory, SKL-LE, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China [2]Key Laboratory for Continental Dynamics of Ministry of Education, Department of Geology, Northwest University, Xi＇an 710069, China [3]State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi＇an 710075, China |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China (Grant Nos.40372202 and 40172610) and National Important Basic Research Project of China (Grant No. G2003CB214607) |
| |
| 摘 要： | The first detailed chronology for the late Oligocene to early Miocene continental record in northern Junggar Basin is presented,based on rock magnetic experiments and magnetostratigraphic investiga-tions of a 192 m thick mammal-bearing section in the Ulungur River area. Magnetites and hematites were identified as the main carriers for the characteristic remanent magnetization,and the resulting polarity sequence allows an unambiguous correlation to the geomagnetic polarity time scale (GPTS). Furthermore,the Tieersihabahe fauna layer occurs below the Paleocene/Neocene boundary,and the Suosuoquan fauna layer is just above the Neocene onset. Therefore,the age of the Tieersihabahe fauna and Suosuoquan fauna layers can be definitely estimated to be about 25.2 Ma and 22.5 Ma,respectively.
|
| 关 键 词： | 哺乳动物 中国 准葛尔盆地 化石 测定年龄 |
| 收稿时间： | 30 November 2005 |
| 修稿时间： | 2005-11-312006-05-31 |
Magnetostratigraphic dating of mammalian fossils in Junggar Basin,northwest China |
| |
| ZHANG Rui YUE LePing WANG JianQi.Magnetostratigraphic dating of mammalian fossils in Junggar Basin, northwest China[J].Chinese Science Bulletin,2007,52(11):1526-1531. |
| |
| Authors: | Zhang Rui Yue LePing Wang JianQi |
| |
| Institution: | (1) Paleomagnetism and Geochronology Laboratory, SKL-LE, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China;(2) Key Laboratory for Continental Dynamics of Ministry of Education, Department of Geology, Northwest University, Xi’an, 710069, China;(3) State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China |
| |
| Abstract: | The first detailed chronology for the late Oligocene to early Miocene continental record in northern Junggar Basin is presented,based on rock magnetic experiments and magnetostratigraphic investiga-tions of a 192 m thick mammal-bearing section in the Ulungur River area. Magnetites and hematites were identified as the main carriers for the characteristic remanent magnetization,and the resulting polarity sequence allows an unambiguous correlation to the geomagnetic polarity time scale (GPTS). Furthermore,the Tieersihabahe fauna layer occurs below the Paleocene/Neocene boundary,and the Suosuoquan fauna layer is just above the Neocene onset. Therefore,the age of the Tieersihabahe fauna and Suosuoquan fauna layers can be definitely estimated to be about 25.2 Ma and 22.5 Ma,respectively. |
| |
| Keywords: | Junggar Basin Cenezoic mammalian fossil magnetostratigraphy |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
| 点击此处可从《中国科学通报(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国科学通报(英文版)》下载免费的PDF全文 |
|
