Cenozoic cooling history of the North Qilian Shan, northern Tibetan Plateau, and the initiation of the Haiyuan fault: Constraints from apatite- and zircon-fission track thermochronology

2019 ◽  
Vol 751 ◽  
pp. 109-124 ◽  
Author(s):  
Bing Li ◽  
Xuanhua Chen ◽  
Andrew V. Zuza ◽  
Daogong Hu ◽  
Weicui Ding ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Fission Track ◽  
Cooling History ◽  
The North ◽  
Northern Tibetan Plateau ◽  
Zircon Fission Track ◽  
Fission Track Thermochronology ◽  
History Of ◽  
North Qilian

scholarly journals Intensified Late Miocene Deformation in the Northern Qaidam Basin, Northern Tibetan Plateau, Constrained by Apatite Fission-Track Thermochronology

2021 ◽  
Vol 9 ◽  
Author(s):  
Pengju He ◽  
Chunhui Song ◽  
Yadong Wang ◽  
Yihu Zhang ◽  
Wenqi Chen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Late Miocene ◽  
Fission Track ◽  
Qaidam Basin ◽  
Thrust Belt ◽  
Apatite Fission Track ◽  
The North ◽  
Northern Tibetan Plateau ◽  
Fission Track Thermochronology ◽  
North Qaidam

The Cenozoic tectonic evolution of the North Qaidam-Qilian Shan fold-thrust belt in the northern Tibetan Plateau is important to understanding the tectonic rejuvenation of orogeny and growth of the plateau. However, the deformation processes in this region remain controversial. This study presents new apatite fission track (AFT) data from Paleogene strata in the northern Qaidam Basin to investigate the time of deformation in this site. Thermal modeling of these partially annealed detrital AFT ages shows a thermal history with a noticeable transition from heating to cooling after ∼10 Ma. This transition is attributed to the intensified thrusting and folding of the northern Qaidam Basin since ∼10 Ma. Integrated with published tectonics and thermochronology results, we suggest the North Qaidam-Qilian Shan fold-thrust belt experienced prevailing tectonism since the late Miocene.

Cenozoic pulsed deformation history of northeastern Tibetan Plateau reconstructed from fission-track thermochronology

2016 ◽  
Vol 672-673 ◽  
pp. 212-227 ◽  
Author(s):  
Xiuxi Wang ◽  
Chunhui Song ◽  
Massimiliano Zattin ◽  
Pengju He ◽  
Ai Song ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Fission Track ◽  
Deformation History ◽  
Northeastern Tibetan Plateau ◽  
Fission Track Thermochronology ◽  
History Of

Integrated analyses constraining the provenance of sandstones, mudstones, and conglomerates, a case study: the Laojunshan conglomerate, Qilian orogen, northwest China

2007 ◽  
Vol 44 (7) ◽  
pp. 961-986 ◽  
Author(s):  
Zhen Yan ◽  
Wenjiao Xiao ◽  
Zongqi Wang ◽  
Jilian Li
Keyword(s):  
Tibetan Plateau ◽  
Middle Devonian ◽  
Tectonic Setting ◽  
Active Continental Margin ◽  
Geochemical Data ◽  
The North ◽  
Northern Tibetan Plateau ◽  
Wide Range ◽  
Qilian Orogen ◽  
North Qilian

The Qilian orogenic belt in the northern Tibetan plateau connects the Altaids to the north with the Tethyan orogenic system to the south and occupies a key tectonic position in the evolution and assembly of Asia. The belt contains a wide range of subduction–accretion-related petrotectonic units. The Early–Middle Devonian Laojunshan conglomerate, deposited unconformably upon Cambrian–Silurian strata along the northern margin of the North Qilian terrane, contains a record of the late Paleozoic tectonism of the Qilian orogen. Its provenance and tectonic setting are critical in understanding not only the tectonic evolution of Tibetan plateau, but Paleozoic global reconstructions as well. The composition of clastic conglomerates and heavy mineral assemblages of sandstones suggests that coeval mafic, felsic, metamorphic, and sedimentary rocks were the main sources. The geochemistry of volcanic clasts and paleocurrent and paleogeographic data suggest derivation from subduction–accretion complexes in the North Qilian terrane. The geochemistry of siltstones and mudstones indicates that the Laojunshan conglomerate was derived from an arc and accumulated in an active continental margin. Geochemical data of granitoid clasts suggest that they were derived from Ordovician–Silurian subduction-related magmatic rocks. Mafic and ultramafic clasts, chromite, and magnetite decrease upwards in the stratigraphy whereas metamorphic, sedimentary and granitoid clasts, and garnet increase. These data imply that mafic rocks were the predominant source during initial deposition. Regional studies suggest that the North China plate subducted southwards and produced subduction-related arc magmatism along the southern margin of the North Qilian terrane during the Early–Middle Devonian. Therefore, we interpret the Laojunshan conglomerate as a fore-arc basin fill.

scholarly journals Erosion, fault initiation and topographic growth of the North Qilian Shan (northern Tibetan Plateau)

Geosphere ◽  
2010 ◽  
Vol 6 (6) ◽  
pp. 937-941 ◽  
Author(s):  
Dewen Zheng ◽  
Marin K. Clark ◽  
Peizhen Zhang ◽  
Wenjun Zheng ◽  
Kenneth A. Farley
Keyword(s):  
Tibetan Plateau ◽  
The North ◽  
Northern Tibetan Plateau ◽  
North Qilian

Fission-track analysis unravels the denudation history of the Bonar Range in the footwall of the Alpine Fault, South Island, New Zealand

2010 ◽  
Vol 147 (6) ◽  
pp. 801-813 ◽  
Author(s):  
UWE RING ◽  
MATTHIAS BERNET
Keyword(s):  
New Zealand ◽  
Late Cretaceous ◽  
Fission Track ◽  
Southern Alps ◽  
Exhumation Rate ◽  
Alpine Fault ◽  
Zircon Fission Track ◽  
Fission Track Thermochronology ◽  
Late Tertiary ◽  
History Of

AbstractWe apply fission-track thermochronology to shed new light on the tectonic history of Zealandia during Late Cretaceous continental extension and the onset of Late Tertiary mountain building in the Southern Alps of New Zealand. The Southern Alps are one of the fastest erosionally exhuming mountain belts on Earth. Exhumation of the Bonar Range in Westland just to the northwest of the Alpine Fault is orders of magnitude slower. We report apatite and zircon fission-track ages from samples that were collected along an ENE–WSW profile across the central Bonar Range, parallel to the tectonic transport direction of a prominent ductile fabric in the basement gneiss. Zircon fission-track (ZFT) ages show a large spread from 121.9 ± 12.1 Ma to 74.9 ± 7.2 Ma (1σ errors). The youngest ZFT ages of 78 to 75 Ma occur at low elevations on either side of the Bonar Range and become older towards the top of the range, thereby showing a symmetric pattern parallel to the ENE-trending profile across the range. Age–elevation relationships suggest an exhumation rate of 50–100 m Ma−1. We relate the ZFT ages to slow erosion of a tectonically inactive spot in the Late Cretaceous magmatic arc of Zealandia. Therefore, the first main significance of the paper is that it demonstrates that not all of 110–90 Ma Zealandia was necessarily participating in extreme core complex-related extension but that there were enclaves of lithosphere that underwent slow erosion. The apatite fission-track (AFT) ages range from 11.1 ± 1.9 Ma to 5.3 ± 1.0 Ma and age–elevation relationships suggest an exhumation rate of c. 200 m Ma−1. We relate the AFT ages to the inception of transpressive motion across the Alpine Fault and modest exhumation in its footwall in Late Miocene times. If so, the second significant point of this paper is that transpressive motion across the Alpine Fault was already under way by c. 11 Ma.

Sign in / Sign up

Export Citation Format

Share Document