Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B32037.1 |
Heavy mineral analysis and detrital U-Pb ages of the intracontinental Paleo-Yangzte basin: Implications for a transcontinental source-to-sink system during Late Cretaceous time | |
Deng, Bin1,2; Chew, David2; Jiang, Lei1; Mark, Chris2; Cogne, Nathan2; Wang, Zijian1; Liu, Shugen1 | |
2018-11-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:2087-2109 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Ireland |
英文摘要 | The Paleo-Yangtze Basin is hypothesized to have connected the Sichuan, Xichang, and Chuxiong basins during the Late Mesozoic to Early Cenozoic. The Paleo-Yangtze Basin subsequently fragmented later in the Cenozoic, which makes it challenging to decipher its provenance shifts and the exhumation of the surrounding hinterland. Heavy mineral analyses combined with detrital apatite, rutile, and zircon U-Pb dating were employed to elucidate the stratigraphic signatures and exhumation patterns along the eastern margin of the Tibetan Plateau during the Late Cretaceous to Paleogene. Two key horizons have been identified across these basins based on their detrital mineralogy: a garnet-rich horizon within the southern Sichuan Basin, and a garnet-poor horizon in the Xichang and Chuxiong basins. Furthermore, there is a distinct increase in garnet-zircon (GZi) and apatite-tourmaline (ATi) indices in the Upper Cretaceous Gaokan Formation in the Sichuan Basin, indicating increased sediment input from metamorphic and granitic sources as a result of enhanced uplift and exhumation during the Late Cretaceous. A subsequent decrease in these indices in the Sichuan Basin during the Early Paleogene is attributed to the tectonic quiescence of the western Yangtze region during the Early Cenozoic. It should be noted that a contemporaneous decrease in ATi and RZi indices in both the Xichang and Chuxiong basins sections is observed from the Upper Cretaceous to the Paleogene. Detrital apatite, rutile and zircon U-Pb ages from the Sichuan, Xichang and Chuxiong basins share similar characteristics, and the zircon U-Pb data are dominated by age peaks of ca. 2600-2200 Ma, ca. 1900-1700 Ma, ca. 900-600 Ma, ca. 500-380 Ma, and ca. 260-200 Ma. These data indicate a dominant source from the northwestern and northern Yangtze areas and the region around the Kangdian rift, consistent with predominant southeast- and southwest-directed palaeocurrents in these basins. We thus argue that detritus derived from the northwestern and northern Yangtze areas and Kangdian rift region fed the basins located on the western Yangtze Block throughout Late Cretaceous to Early Paleogene times. The Lanping-Simao and Khorat basins on the Indo-China Block were also fed by these sedimentary source regions, indicating a major transcontinental drainage system across the western Yangtze Block. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449028300020 |
WOS关键词 | FISSION-TRACK THERMOCHRONOLOGY ; EASTERN TIBETAN PLATEAU ; RIVER SHEAR ZONE ; NEOPROTEROZOIC TECTONIC EVOLUTION ; HF ISOTOPIC CONSTRAINTS ; WHOLE-ROCK GEOCHEMISTRY ; WESTERN SICHUAN BASIN ; BLOCK SOUTH CHINA ; GARZE FOLD BELT ; YANGTZE BLOCK |
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/24809 |
专题 | 地球科学 |
作者单位 | 1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China; 2.Trinity Coll Dublin, Dept Geol, Dublin 2, Ireland |
推荐引用方式 GB/T 7714 | Deng, Bin,Chew, David,Jiang, Lei,et al. Heavy mineral analysis and detrital U-Pb ages of the intracontinental Paleo-Yangzte basin: Implications for a transcontinental source-to-sink system during Late Cretaceous time[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:2087-2109. |
APA | Deng, Bin.,Chew, David.,Jiang, Lei.,Mark, Chris.,Cogne, Nathan.,...&Liu, Shugen.(2018).Heavy mineral analysis and detrital U-Pb ages of the intracontinental Paleo-Yangzte basin: Implications for a transcontinental source-to-sink system during Late Cretaceous time.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,2087-2109. |
MLA | Deng, Bin,et al."Heavy mineral analysis and detrital U-Pb ages of the intracontinental Paleo-Yangzte basin: Implications for a transcontinental source-to-sink system during Late Cretaceous time".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):2087-2109. |
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