Thrusting and exhumation around the margins of the western Tarim basin during the India‐Asia collision

Sobel, Edward R.; Dumitru, Trevor A.

doi:10.1029/96jb03267

Cited by 465 publications

(482 citation statements)

References 56 publications

Supporting

Mentioning

452

Contrasting

Unclassified

Order By: Relevance

“…In the Tian Shan Mountains to the southwest (Fig. 1) tectonism and surface uplift started around 25 -20 Ma and is considered linked to a change from extrusion-dominated to crustal-thickening-dominated strain accommodation in the Himalaya (Bullen et al, 2001;Sobel and Dumitru, 1997). An Oligocene unconformity in basins along the eastern margin of the Altai such as the Dzereg and Dariv basins marks the onset of deformation in the Mongolian Altai (Howard et al, 2003;Cunningham et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…Thermochronological evidence from the Chinese Tian Shan Mountains to the south show Himalayan related Cenozoic accelerated cooling beguñ 25 Ma (e.g. Sobel and Dumitru, 1997) consistent with a renewed phase of uplift. Importantly, Cenozoic rock uplift in the Tian Shan is generally <3km and much of the present-day topography is closely associated with Mesozoic mountain building.…”

Section: Regional Geology and Deformation Historymentioning

confidence: 99%

See 1 more Smart Citation

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

et al. 2006

View full text Add to dashboard Cite

Abstract:This study uses apatite fission track (FT) analysis to constrain the exhumation history of bedrock samples collected from the Altai Mountains in northern Xinjiang, China. Samples were collected as transects across the main structures related to Palaeozoic crustal accretion events. FT results and modeling identify three stages in sample cooling history spanning the Mesozoic and Tertiary. Stage one records rapid cooling to the low temperature part of the fission track partial annealing zone circa 70±10°C. Stage two, records a period of relative stability with little if any cooling taking place between ~ 75 Ma and ~25-20 Ma suggesting the Altai region had been reduced to an area of low relief. Support for this can be found in the adjacent Junngar Basin that received little if any sediment during this interval. Final stage cooling took place in the Miocene at an accelerated rate bringing the sampled rocks to the Earth's surface. This last stage, linked to the far field effects of the Himalayan collision, most likely generated the surface uplift and relief that define the present-day Altai Mountains.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Regional Geology and Deformation Historymentioning

confidence: 99%

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

et al. 2006

View full text Add to dashboard Cite

show abstract

“…This collision, which initiated at 50-52 Ma [Patriat and Achache, 1984;Guillot, 2003;van Hinsbergen et al, 2011] and has led to the creation of world's highest mountain ranges and largest plateaux, is presently ongoing with a convergence velocity of 34 mm/yr near the western syntaxis [Molnar and Stock, 2009;DeMets et al, 2010]. The Pamir, a northwardconvex mountain range, has presumably been moving north relative to the surrounding regions since about 25 Ma [Sobel and Dumitru, 1997], overriding the Tajik-Yarkand Basin [Burtman and Molnar, 1993], which previously connected the Tajik Depression in the west and the Tarim Basin in the east. It consists of roughly E-W trending structural belts that reflect a history of successive terrane accretion.…”

Section: Tectonic Settingmentioning

confidence: 99%

Geometry of the Pamir‐Hindu Kush intermediate‐depth earthquake zone from local seismic data

et al. 2013

View full text Add to dashboard Cite

[1] We present new seismicity images based on a two-year seismic deployment in the Pamir and SW Tien Shan. A total of 9532 earthquakes were detected, located, and rigorously assessed in a multistage automatic procedure utilizing state-of-the-art picking algorithms, waveform cross-correlation, and multi-event relocation. The obtained catalog provides new information on crustal seismicity and reveals the geometry and internal structure of the Pamir-Hindu Kush intermediate-depth seismic zone with improved detail and resolution. The relocated seismicity clearly defines at least two distinct planes: one beneath the Pamir and the other beneath the Hindu Kush, separated by a gap across which strike and dip directions change abruptly. The Pamir seismic zone forms a thin (approximately 10 km width), curviplanar arc that strikes east-west and dips south at its eastern end and then progressively turns by 90°to reach a north-south strike and a due eastward dip at its southwestern termination. Pamir deep seismicity outlines several streaks at depths between 70 and 240 km, with the deepest events occurring at its southwestern end. Intermediate-depth earthquakes are clearly separated from shallow crustal seismicity, which is confined to the uppermost 20-25 km. The Hindu Kush seismic zone extends from 40 to 250 km depth and generally strikes east-west, yet bends northeast, toward the Pamir, at its eastern end. It may be divided vertically into upper and lower parts separated by a gap at approximately 150 km depth. In the upper part, events form a plane that is 15-25 km thick in cross section and dips sub-vertically north to northwest. Seismic activity is more virile in the lower part, where several distinct clusters form a complex pattern of sub-parallel planes. The observed geometry could be reconciled either with a model of two-sided subduction of Eurasian and previously underthrusted Indian continental lithosphere or by a purely Eurasian origin of both Pamir and Hindu Kush seismic zones, which necessitates a contortion and oversteepening of the latter.

show abstract

“…Hendrix et al 1992;Sobel & Dumitru 1997;Allen et al 2001;Dumitru et al 2001;Glorie et al 2011). Indeed, the role of Palaeozoic structures and sutures is particularly important during later Cenozoic deformation.…”

Section: Geological Evolution Of Central Asian Basins and The Westernmentioning

confidence: 99%

“…Deformation along the fault trace during the Late Oligocene-Early Miocene (e.g. Hendrix et al 1994;Sobel & Dumitru 1997;Sobel et al 2006a;Heermance et al 2008;Amidon & Hynek 2010;Wei et al 2013;Bande et al 2015a) and again in the Late Miocene (e.g. Bullen et al 2003;Heermance et al 2008;Macaulay et al 2014) can be linked to the evolution of the Pamir (Bande et al 2015b).…”

Section: Geological Evolution Of Central Asian Basins and The Westernmentioning

confidence: 99%

Geological evolution of Central Asian Basins and the western Tien Shan Range

Brunet

Sobel

McCann³

2017

Self Cite

View full text Add to dashboard Cite

The geological evolution of Central Asia commenced with the evolution of a complex Precambrian–Palaeozoic orogen. Cimmerian blocks were then accreted to the southern margin during the Mesozoic, leading to tectonic reactivation of older structures and discrete episodes of basin formation. The Indian and Arabian blocks collided with Asia during the Cenozoic, leading to renewed structural reactivation, intracontinental deformation and basin development. This complex evolution resulted in the present-day setting of an elongated Tien Shan range flanked by large Mesozoic–Cenozoic sedimentary basins with smaller intramontane basins distributed within the range. The aim of this volume is to present multidisciplinary results and reviews from research groups in Europe and Central Asia that focus on the western part of the Tien Shan and some of the large sedimentary basins in that area. These works elucidate the Late Palaeozoic–Cenozoic tectono-sedimentary evolution of the area. Emphasis is placed on the collision of terranes and/or continents and the ensuing fault reactivation; the impact of changes in climate on the sedimentation is also examined.

show abstract

Thrusting and exhumation around the margins of the western Tarim basin during the India‐Asia collision

Cited by 465 publications

References 56 publications

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

Mesozoic–Tertiary exhumation history of the Altai Mountains, northern Xinjiang, China: New constraints from apatite fission track data

Geometry of the Pamir‐Hindu Kush intermediate‐depth earthquake zone from local seismic data

Geological evolution of Central Asian Basins and the western Tien Shan Range

Contact Info

Product

Resources

About