Show simple item record

dc.contributor.authorJepson, G.
dc.contributor.authorGlorie, S.
dc.contributor.authorKonopelko, D.
dc.contributor.authorMirkamalov, R.
dc.contributor.authorDanišík, Martin
dc.contributor.authorCollins, A.
dc.identifier.citationJepson, G. and Glorie, S. and Konopelko, D. and Mirkamalov, R. and Danišík, M. and Collins, A. 2018. The low-temperature thermo-tectonic evolution of the western Tian Shan, Uzbekistan. Gondwana Research. 64: pp. 122-136.

The Kyzylkum-Nurata region represents a key area in understanding the tectonic evolution of the western Tian Shan. In this study, we present new thermochronological data (apatite fission track and apatite (U-Th-Sm)/He) and associated thermal history models for 45 igneous samples from the Kyzylkum-Nurata Segment of South Tian Shan on the territory of Uzbekistan and Tajikistan. Our data show that the Kyzylkum-Nurata Segment experienced a multi-phase Mesozoic thermal history that differs from previously studied segments of the Tian Shan. A Triassic (~220–200 Ma) cooling signal is widespread throughout the Tian Shan and is interpreted as being associated with exhumation following the closure of the Palaeo-Asian Ocean. Following this period of fast cooling, the Kyzylkum-Nurata Segment experienced a period of slow cooling and erosion in the Early Jurassic (~190–160 Ma). However, in contrast to other parts of the Tian Shan, our study area preserves evidence for rapid cooling during the Late Jurassic–Early Cretaceous (~160–120). Given that this rapid cooling signal was only recorded for samples in association with major structures (e.g., relic suture-shear zones), we interpret this event as a period of fault reactivation related with tectonic processes at the Eurasian margin of the Tethys Ocean. Subsequently, the Late Cretaceous–early Palaeogene (~100–50 Ma) is characterised by slow cooling and erosion. Since the late Palaeogene, the basement of the Tian Shan experienced cooling related to the India-Eurasia collision. The thermal signal of this collision has been extensively recorded in the high-altitude Kyrgyz Tian Shan. Within the low-relief Kyzylkum-Nurata Segment, this Cenozoic overprint is not recorded, allowing for a detailed assessment of the Mesozoic thermal and landscape evolution of the western Tian Shan. Our study demonstrates that the Cretaceous Uzbek Tian Shan was characterised by a series of parallel, linear mountain belts that formed along suture zones during fault reactivation.

dc.publisherElsevier BV
dc.titleThe low-temperature thermo-tectonic evolution of the western Tian Shan, Uzbekistan
dc.typeJournal Article
dcterms.source.titleGondwana Research
curtin.departmentJohn de Laeter Centre
curtin.accessStatusOpen access

Files in this item


This item appears in the following Collection(s)

Show simple item record
Except where otherwise noted, this item's license is described as