Early Cretaceous deformation in the southern Tashkorgan region: Implications for the tectonic evolution of the northeastern Pamir

Zhang, Cai; He, Bizhu; Li, Guangwei; Jiao, Cunli; Yun, Xiaorui

doi:10.31035/cg2021023

Cited by 4 publications

(4 citation statements)

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“…Together, these domains are known as the Pamir-WK. The Cenozoic and pre-Cenozoic geological evolution of the Pamir-WK has been a topic of significant scientific focus over the past 20 years (Robinson et al, 2004;Cowgill, 2010;Li et al, 2020;Cai et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Northward Growth of the West Kunlun Mountains: Insight From the Age–Elevation Relationship of New Apatite Fission Track Data

Liu

et al. 2021

Front. Earth Sci.

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The Cenozoic collision between India and Asia promoted the widespread uplift of the Tibetan Plateau, with significant deformation documented in the Pamir Plateau and West Kunlun Mountains. Low-temperature thermochronology and basin provenance analysis have revealed three episodes of rapid deformation and uplift in the Pamir–West Kunlun Mountains during the Cenozoic. However, there is very little low-temperature thermochronology age–elevation relationship (AER) data on fast exhumation events in this area—especially in the West Kunlun Mountains— leading to uncertainty surrounding how these events propagated within and around the mountain range. In this study, we produced an elevation profile across granite located south of Kudi, Xijiang Province, China, to reveal its exhumation history. Apatite fission track AER data show that a rapid exhumation event occurred at ∼26 Ma in the southern West Kunlun Mountains. When combined with published data, we interpret that the initial uplift events related to the India–Asia collision began in the central Pamir, southern West Kunlun, and northern West Kunlun regions during the Late Eocene, Oligocene, and Middle Miocene periods, respectively. Therefore, the Cenozoic northward growth process occurred from south to north around West Kunlun.

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Section: Introductionmentioning

confidence: 99%

Northward Growth of the West Kunlun Mountains: Insight From the Age–Elevation Relationship of New Apatite Fission Track Data

Liu

et al. 2021

Front. Earth Sci.

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“…With our interpreted Cretaceous motion along the regional Poshkharv thrust and related structures, Cretaceous crustal shortening is documented across the entire Northern Pamir. In the NE Pamir, Cretaceous crustal shortening and thickening has been primarily controlled by two regional structures: the NE-directed Shala-Tala thrust at ∼110-100 Ma in the north, and the SW-directed Torbashi-Baoziya-Rouluke thrust system at ∼125-105 Ma in the eastern Pamir (Cai et al, 2021;Imrecke et al, 2019;Robinson et al, 2004Robinson et al, , 2007. Moreover, amphibolite facies metamorphism in the Shala-Tala thrust hanging-wall documents regional crustal thickening in the NE Pamir from ∼125 to 110 Ma prior to exhumation along the Shala Tala thrust (Robinson et al, 2004).…”

Section: Cretaceous Crustal Shortening-thickening In the Pamir-karakorammentioning

confidence: 99%

“…The second period of deformation occurred during the Cretaceous and is interpreted to be the result of retroarc deformation during the northward subduction of the Neotethys Ocean (Chapman, Robinson et al, 2018;Robinson, 2015;Searle, 2011). Cretaceous crustal thickening and thrust faulting in the eastern Northern Pamir are documented by amphibolite facies metamorphism in the hanging-wall of the Shala-Tala thrust fault from ∼130 to 110 Ma followed by crustal shortening along the Shala Tala thrust from ∼110 to 100 Ma and the Torbashi thrust in the south from ∼120 to 100 Ma (Cai et al, 2021;Imrecke et al, 2019;Robinson et al, 2004Robinson et al, , 2007. To the south, moderate Cretaceous crustal deformation has been documented within the Southern Pamir fold-thrust belt from ∼110 to 90 Ma with ∼10% upper crustal shortening (Chapman, Robinson et al, 2018).…”

Section: Mesozoic Crustal Deformation In the Pamir-karakorammentioning

confidence: 99%

Mesozoic Tectonic Evolution in the Kurgovat‐Vanch Complex, NW Pamir

Robinson

Zucali

et al. 2022

Tectonics

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Unraveling different episodes of deformation in regions that have a polyphase tectonic history is important in understanding the evolution of many orogens. Over the past several decades, growing geologic evidence of significant Mesozoic crustal shortening and thickening in the Tibetan-Pamir orogen has documented the importance that Mesozoic orogeny played in forming the vast Tibetan-Pamir Plateau (e.g.,

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“…1A), formed due to the late Paleozoic-early Mesozoic accretion of the Kunlun, Karakul-Mazar, central Pamir, and southern Pamir terranes (Fig. 1B; Burtman and Molnar, 1993;Burtman, 2010;Robinson et al, 2004Robinson et al, , 2012Robinson, 2015;Angiolini et al, 2013;Villarreal et al, 2020;Chen et al, 2021;Li et al, 2022;Rembe et al, 2022) and the late Mesozoic-Cenozoic intracontinental deformation caused by northward subduction of the Neo-Tethys oceanic slab and subsequent collision of the Indian and Asian plates (Burtman and Molnar, 1993;Sobel and Dumitru, 1997;Robinson et al, 2004;Cowgill, 2010;Bershaw et al, 2012;Sobel et al, 2011Sobel et al, , 2013Cao et al, 2013a;Robinson, 2015;Rutte et al, 2017aRutte et al, , 2017bChapman et al, 2018;Worthington et al, 2020;Cai et al, 2021;Li et al, 2022;Villarreal et al, 2023). In this convergent setting, igneous and medium-to high-grade (575-830 °C/6-22 kbar) metamorphic rocks were initially exhumed in the early Miocene in the Pamir interior in a series of gneiss domes that formed by detachment faulting associated with ∼N-S extension (Fig.…”

Section: Introductionmentioning

confidence: 99%

Late Miocene to present synchronous extension and contraction in the eastern Pamir: Insights from inversion of thermochronologic data across the southern Muztaghata dome

Chen,

Fellin,

Willett

et al. 2023

Geological Society of America Bulletin

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Late Cenozoic gneiss domes cover ∼30% of the surface of the Pamir salient in the northwestern end of the India−Asia collision zone. The highest peaks of the Pamir are in the east, where the ∼250-km-long, ∼N−S-trending Kongur Shan extensional system controls the topography. We combined 115 new apatite (U-Th-Sm)/He and zircon (U-Th)/He single-grain dates from 18 samples and previous thermochronologic data with three-dimensional thermokinematic models to constrain the thermo-tectonic history of the southern portion of the Muztaghata dome, one of the largest gneiss domes in the eastern Pamir. The new cooling dates from the western boundary of the southern Muztaghata dome generally increase with distance from the southern Kongur Shan fault and are related to normal faulting along the fault at near-surface levels over the last 6.5 m.y. The new dates across the central−eastern portion of the dome outline the previously recorded U-shaped date pattern at a higher spatial resolution. The modeling indicates that this pattern is most likely the result of uplift and erosion above a flat-ramp-flat thrust fault at depth over the last 7 m.y. Modeling does not resolve how topographic changes may have affected the observed distribution of cooling dates, but it indicates a faster thrust-slip rate associated with an increase in relief and a slower one associated with steady-state topography. Our results suggest that the modern topography along the southern Muztaghata dome, similar to the rest of the eastern Pamir salient, is shaped by normal faulting at shallow depth, but its growth may still be governed by contraction and crustal thickening at depth.

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Early Cretaceous deformation in the southern Tashkorgan region: Implications for the tectonic evolution of the northeastern Pamir

Cited by 4 publications

References 0 publications

Northward Growth of the West Kunlun Mountains: Insight From the Age–Elevation Relationship of New Apatite Fission Track Data

Northward Growth of the West Kunlun Mountains: Insight From the Age–Elevation Relationship of New Apatite Fission Track Data

Mesozoic Tectonic Evolution in the Kurgovat‐Vanch Complex, NW Pamir

Late Miocene to present synchronous extension and contraction in the eastern Pamir: Insights from inversion of thermochronologic data across the southern Muztaghata dome

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