Late Miocene drainage reorganization on the NE Tibetan Plateau linked to growth of the Qilian Shan revealed by coupled carbonate Sr-silicate Nd isotopic tracers

Palaeogeography Palaeoclimatology Palaeoecology, Год журнала: 2024, Номер 638, С. 112038 - 112038

Опубликована: Янв. 21, 2024

Язык: Английский

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Revised timing of rapid exhumation in the West Qinling: Implications for geodynamics of Oligocene-Miocene Tibetan plateau outward expansion

Earth and Planetary Science Letters, Год журнала: 2024, Номер 646, С. 118966 - 118966

Опубликована: Авг. 31, 2024

Язык: Английский

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Quantification of the provenance contribution and sedimentary mixing effect of sediments in the Yellow River Basin, China

The Science of The Total Environment, Год журнала: 2024, Номер 945, С. 173959 - 173959

Опубликована: Июнь 14, 2024

Язык: Английский

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Geochemistry and geochronology of modern river sediments from the Heihe River on the northeastern Tibetan Plateau: Implications for weathering and sediment source-to-sink processes

Geomorphology, Год журнала: 2025, Номер unknown, С. 109657 - 109657

Опубликована: Фев. 1, 2025

Язык: Английский

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Reconciling the Long‐Term Growth of the Northeastern Tibetan Plateau and the Upstream Yellow River Profile

Journal of Geophysical Research Solid Earth, Год журнала: 2025, Номер 130(2)

Опубликована: Фев. 1, 2025

Abstract The growth history of the Northeastern Tibetan Plateau (NETP) is enigmatic, with debates on when and how NETP significantly uplifted. Here, we use a numerical landscape evolution model to quantitatively investigate ∼20 Ma by studying formation upstream Yellow River (UYR). long‐term consists an early block uplift (∼20– Ma) late outward propagation (–0 Ma), compared observed river profiles, erosion rates, trend acceleration time deformation, paleo‐elevation data sets. Before (middle Miocene), was uplifted via growth, major in south part. Subsequently, high (∼5 km) has been northward until present. We further suggest that pure headward unlikely formed profile UYR over past few million years. Our modeling thus reconciles profile, suggesting downstream migration which fundamentally different from small mountain rivers. fluvial may be common outward‐growing plateaus elsewhere Earth.

Язык: Английский

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Multi‐Stage Uplift and Propagation of the Chinese East Tianshan During the Cenozoic

Tectonics, Год журнала: 2025, Номер 44(2)

Опубликована: Фев. 1, 2025

Abstract The ongoing India‐Asia convergence during the Cenozoic drove intensively compressional deformation in northern margins of Tibetan Plateau, such as Tianshan, which formed highest mountain peaks and lowest intermontane basins Central Asia. Understanding spatial‐temporal evolution Tianshan its marginal fold‐thrust belts (FTB) are crucial for interpreting intracontinental processes related to collision. In this work, low‐temperature thermochronology data growth strata analysis integrated constrain chronologically onset structures FTB (Belt I, II, Huoyanshan Anticline) along southern front Chinese East (CETS), then underpin deformational model CETS. We propose a three‐stage expansion reveal by thrust CETS have extended into Turpan Basin since Oligocene. Stage 1: thrusting South Bogda Fault ∼30 Ma, caused initial uplift CETS; 2: expanded southward Tarlang River region at ∼20 Ma; 3: propagated thin‐skinned structural style Anticline central part ∼10 Ma. progressive propagation piedmont could responded multi‐stage Plateau Cenozoic.

Язык: Английский

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Early Cenozoic Reactivation of a Pre‐Existing Crustal Boundary Along the Kuantan Shan‐Hei Shan Area North of the Jiuxi Basin, Northeastern Tibetan Plateau

Tectonics, Год журнала: 2025, Номер 44(5)

Опубликована: Май 1, 2025

Abstract The Cenozoic India‐Eurasia collision and continued convergence resulted in the formation of Tibetan Plateau significant reactivation intracontinental structures located over 1,500 km from zone. However, timing mechanisms driving this remain debated, resulting competing models about evolution plateau margins. This study aims to address issue by focusing on northeastern investigating depositional sequences, source‐to‐sink relationships, deformation along margin. Stratigraphic analysis reveals an upward‐thinning sequence beginning with high‐energy conglomerates Eocene, followed upward‐coarsening sequence. Detrital zircon U‐Pb dating indicates a reorganization sediment dispersal during middle Miocene, shifting northern provenances southern provenances. Structural seismic profile traversing present deforming front shows steep boundary faults positive flower structures, accommodating ∼2.2 shortening (∼7.5% strain). These findings suggest that pre‐existing weak zones within Eurasian plate were reactivated immediately following initial collision. Combined previous geophysical studies, crustal is also imaged Plateau, acting as fixed zone between two terranes throughout Cenozoic. characterized steeply dipping faults, minimal shortening, exemplifying comparable rheological strength.

Язык: Английский

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Landform evolution of the Qilian Shan since 120 Ma revealed by apatite fission track data

Journal of the Geological Society, Год журнала: 2024, Номер 181(5)

Опубликована: Май 14, 2024

The Cenozoic uplift of the Qilian Shan mountain range is intimately connected with collision Indian and Eurasian plates, although mechanism deformation still unclear due to large distance between plate boundary. first requirement if we are determine this obtain process range, which remains a matter debate. We compiled apatite fission track data from previous studies investigate spatial temporal disparities or similarities exhumation process. Most age-evolution profiles thermo-modelling results show low rate 80 20 Ma, corresponding shorter lengths, indicating lower erosion relief across whole region. also reveal two stages rapid exhumation: during Cretaceous (120–80 Ma) since Miocene (20–0 Ma). history shows no significant difference outward growth was limited at southern northern edges after 5 Ma. This pattern for suggests that there probably obvious time initial Indian–Tibetan plates support proposal has uplifted synchronously

Язык: Английский

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Neogene drainage reorganization of Longzhong Basin driven by growth of the northeastern Tibetan Plateau: A Sr isotope hydrological perspective

Basin Research, Год журнала: 2023, Номер 36(1)

Опубликована: Окт. 30, 2023

Abstract The Tibetan Plateau uplift has significantly influenced Asian geomorphic and climate patterns. Drainage evolution across the plateau its surroundings as consequence of such changes in landscape provides an opportunity to understand growth Plateau. However, history major drainage areas around is largely unknown. Here, we reconstructed patterns Cenozoic Longzhong Basin northeastern since India–Asia collision using palaeo‐water solute 87 Sr/ 86 Sr ratio records from subbasins. Higher ratios Lanzhou Xining Basins their consistent temporal variations before ca. 22 Ma well lower Linxia collectively indicate a relatively steady pattern integrated Basin. A diverse after suggests that there was reorganization, characterized by division one into multiple catchment centres, response Subsequently, identical were further approached at 16 Ma, rise Tianshui occurred 9–8 indicating two subsequent composition induced middle Miocene late dust expansion, respectively. Our reconstructions hydrological accelerated basin segmentation adjustment with change during Neogene.

Язык: Английский

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Spatiotemporal development of Cenozoic tectonic deformation in the Qilian Shan, northeastern Tibetan Plateau: A review of low-temperature thermochronologic evidence

Palaeogeography Palaeoclimatology Palaeoecology, Год журнала: 2024, Номер 648, С. 112316 - 112316

Опубликована: Июнь 1, 2024

Язык: Английский

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