IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Late Paleozoic Exhumation of the West Junggar Mountains, NW China
Gillespie, Jack1,2; Glorie, Stijn1; Jepson, Gilby1,3; Xiao, Wenjiao4,5; Collins, Alan S.1
2020
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
ISSN2169-9313
Volume125Issue:1Pages:17
AbstractThe Tianshan and Altai mountain belts dominate the present-day topography of central Asia and are major constituents of the Central Asian Orogenic Belt. These mountain belts have been extensively studied using low-temperature thermochronology to understand their uplift and exhumation history. In comparison, few studies have focused on the spatial extent and timing of intracontinental deformation in the intervening ranges, such as the West Junggar Mountains. Apatite fission track (AFT) and apatite U-Pb dating of igneous samples from the West Junggar Mountains reveals AFT central ages ranging from latest Carboniferous to Middle Jurassic and mean confined track lengths between 14.1 and 12.0 mu m, which are negatively correlating to AFT central ages. Apatite U-Pb dating produced mid-Carboniferous-early Permian ages within uncertainty of zircon U-Pb crystallization ages, indicating cooling to below (similar to)450-550 degrees C immediately following emplacement. Thermal history modeling of our AFT data combined with published (U-Th)/He data predicts rapid cooling to <60 degrees C during the early-middle Permian (285-260 Ma), followed by slower cooling rates during the Mesozoic-Cenozoic. The rapid cooling event coincides with (1) the timing of major basinward thrusting in the Junggar Basin adjacent to the study area and (2) exhumation in the Chinese Altai to the north. In contrast to previous studies, our results imply that the West Junggar Mountains do not record significant exhumation during the Mesozoic-Cenozoic. This suggests that Mesozoic deformation of the Central Asian Orogenic Belt was less pervasive and widespread than previously assumed.
Keywordthermochronology apatite central Asia exhumation intracontinental Junggar
DOI10.1029/2019JB018013
Funding OrganizationAustralian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship
WOS KeywordAPATITE FISSION-TRACK ; ZIRCON U-PB ; LOW-TEMPERATURE THERMOCHRONOLOGY ; LATE CARBONIFEROUS MAGMATISM ; TECTONIC EVOLUTION ; SHEAR ZONE ; STRUCTURAL EVOLUTION ; RADIATION-DAMAGE ; NORTHWEST CHINA ; CRUSTAL GROWTH
Language英语
Funding ProjectAustralian Research Council Discovery Project[DP150101730] ; Australian Government Research Training Program Scholarship
Funding OrganizationAustralian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship ; Australian Research Council Discovery Project ; Australian Research Council Discovery Project ; Australian Government Research Training Program Scholarship ; Australian Government Research Training Program Scholarship
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000530895100009
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/96711
Collection岩石圈演化国家重点实验室
Corresponding AuthorGillespie, Jack
Affiliation1.Univ Adelaide, Sch Phys Sci, Dept Earth Sci, Adelaide, SA, Australia
2.Curtin Univ, Inst Geosci Res TIGeR, Sch Earth & Planetary Sci, Perth, WA, Australia
3.Univ Arizona, Dept Geosci, Tucson, AZ USA
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
5.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Res Ctr Mineral Resources, Urumqi, Peoples R China
Recommended Citation
GB/T 7714
Gillespie, Jack,Glorie, Stijn,Jepson, Gilby,et al. Late Paleozoic Exhumation of the West Junggar Mountains, NW China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2020,125(1):17.
APA Gillespie, Jack,Glorie, Stijn,Jepson, Gilby,Xiao, Wenjiao,&Collins, Alan S..(2020).Late Paleozoic Exhumation of the West Junggar Mountains, NW China.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,125(1),17.
MLA Gillespie, Jack,et al."Late Paleozoic Exhumation of the West Junggar Mountains, NW China".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 125.1(2020):17.
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