[张贴报告]Provenance for the Makran Flysch Basin in Pakistan: implications for interaction between the Indian, Eurasian, and Arabian Plates

Provenance for the Makran Flysch Basin in Pakistan: implications for interaction between the Indian, Eurasian, and Arabian Plates
编号:1259 稿件编号:1612 访问权限:私有 更新:2023-04-09 22:39:20 浏览:281次 张贴报告

报告开始:2023年05月06日 08:00 (Asia/Shanghai)

报告时间:0min

所在会议:[SP] 张贴报告专场 » [SP-1-1] 1、第四纪地质与全球变化

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摘要
The Makran Flysch Basin or Makran Accretionary Wedge, as the Neo-Tethyan remnant deposited basin, is located in an arc-trench gap at the triple junction of the Indian, Arabian and Eurasian plates and has kept depositional records of the interaction between the three plates. The analysis of the area can play a significant role in determining the transportation patterns, formation mechanisms, and reveal the potential tectonic evolution of the basin. This work focuses on the Late Oligocene-Early Miocene sandstones of the Flysch Basin through provenance analyses using techniques of petrographic, SEM-EDX, and geochemical examinations, including major, trace, and rare earth elements. The geochemical signatures indicate the sandstone’s provenance was potentially from a mixing of intermediate igneous and quartzose recycled materials, indicating dominant felsic sources with little mafic/ultramafic inputs. The ‘end member’ provenance of Makran Flysch Basin is proposed to be the underlying older rocks of the Bagh-complex, Kirthar Sulaiman Belt, and the Kohistan-Ladak arc. The Chagai-Raskoh Arc and Bela Ophiolites have no contribution in the detrital mode. According to this study, the geochemical compositions and tectonic phenomena supported two provenance stages. Additionally, the study supports the fact that the clastic sedimentation to the Katawaz Basin started deposited during the hard Indian-Eurasian collision.
关键字
Makran Flysch Basin,accretionary wedge,Provenance,oblique conver
报告人
KhanWaseem
Sun Yat Sen University Zhuhai Campus

稿件作者
KhanWaseem Sun Yat Sen University Zhuhai Campus
梁浩 中山大学
张珂 中山大学
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