U-Pb geochronological records and provenance system analysis of the Mesozoic-Cenozoic sandstone detrital zircons in the northern and southern piedmonts of Tianshan, Northwest China: Responses to intracontinental basin-range evolution
文献类型：期刊论文
| 作者 | Li Zhong1; Peng ShouTao2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 29期号:3页码:739-755 |
| 关键词 | U-Pb geochronology of dtrital zircons Sedimentary provenance system Basin-range evolution Mesozoic-Cenozoic Tianshan Junggar basin Tarim basin |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Larger numbers of in-situ and high-precision isotopic analyses on detrital minerals provide a new chance for the frontier research of basin (basin-range) geodynamics. For the Mesozoic and Cenozoic outcrop profiles in the northern and southern piedmonts of Tianshan (corresponding to southern Junggar and northern Tarim basins), Northwest China, thirteen sandstone samples (four new samples) were chosen, and their detrital zircon U-Pb isotopes were measured by LA-ICP-MS method. Based on contrast of geochronology, provenance system and tectonic attribute of the detrital zircons between the northern and southern piedmonts of Tianshan, this research further explores sedimentary crust evolution and its geodynamic mechanism of the Tianshan and adjacent basins. The paper shows that the Upper Triassic-Middle Jurassic detrital zircons in the southern piedmont of Tianshan (SPT) are characterized by relatively single and old U-Pb ages (peak range: 380 similar to 450Ma), while ones in the northern piedmont of Tianshan (NPT) by relatively wide and complex U-Pb ages (peak range: 160 similar to 470Ma). The Upper Jurassic-Lower Cretaceous detrital zircon U-Pb ages in SPT become wide and complex (150 similar to 470 Ma), while ones in NPT become narrow (though relatively wide ages of 250 similar to 430Ma remained). For the-Neogene strata, detrital zircon U-Pb ages in the both NPT and SPT tend to single, that is, relatively older (380 similar to 460Ma) and younger (260 similar to 310Ma) peak ages occurred in the two belts respectively. The above evidences indicate four phases to basin-range tectonic evolution in the study area. Stable and weak tectonic activity developed in the Middle-Late Triassic-Middle Jurassic Period, with main watershed occurred in the southern Tianshan. Regional and whole uplift became evident in the Late Jurassic-Early Cretaceous Period, with main watershed north migrating in the Tianshan. Following to weakening tectonic activity in the Late Cretaceous-Paleogene Period, the most intensive uplift of Tianshan area occurred in Neogene, with distinctive watershed systems in the North and South Tianshan. The research also shows that evidently intracontinential tectonic deformation and reconstruction in the Tianshan area resulted from Lhasa and India, rather than Qiangtang, collisions along the southern boundary of Eurasia. On the other hand, an important regional climatic-depositional transition in the study area was responsive to the Lhasa collision event in the Late Jurassic-Early Cretaceous Period, however, the above event had not resulted in evident differentiation of local climatic-depositional records between sedimentary basins respectively located in north and south to Tianshan until the India collision event happened in Neogene. |
| WOS关键词 | DEVONIAN GRANITIC INTRUSIONS ; PLASMA-MASS SPECTROMETRY ; TIEN-SHAN ; NW CHINA ; TECTONIC EVOLUTION ; OROGENIC BELT ; TARIM BASIN ; VOLCANIC-ROCKS ; WESTERN CHINA ; SOUTHWESTERN TIANSHAN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000318829900001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/87066]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li Zhong |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.SinoPec, Explorat & Prod Res Inst, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Zhong,Peng ShouTao. U-Pb geochronological records and provenance system analysis of the Mesozoic-Cenozoic sandstone detrital zircons in the northern and southern piedmonts of Tianshan, Northwest China: Responses to intracontinental basin-range evolution[J]. ACTA PETROLOGICA SINICA,2013,29(3):739-755. |
| APA | Li Zhong,&Peng ShouTao.(2013).U-Pb geochronological records and provenance system analysis of the Mesozoic-Cenozoic sandstone detrital zircons in the northern and southern piedmonts of Tianshan, Northwest China: Responses to intracontinental basin-range evolution.ACTA PETROLOGICA SINICA,29(3),739-755. |
| MLA | Li Zhong,et al."U-Pb geochronological records and provenance system analysis of the Mesozoic-Cenozoic sandstone detrital zircons in the northern and southern piedmonts of Tianshan, Northwest China: Responses to intracontinental basin-range evolution".ACTA PETROLOGICA SINICA 29.3(2013):739-755. |
入库方式： OAI收割
来源：地质与地球物理研究所
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