论文成果

Apatite low-temperature thermochronometry and applications to Tarim Basin in the Northwestern China

摘要:Apatite low temperature thermochronometry, as its theory and applications are continuously evolving, has been widely used to study the absolute age of volcanic deposits, tectono-thermal evolution of mountains and basins, landscape evolution, etc. In this paper, we first summarized the research advancement of the apatite fission track and (U-Th)/He dating techniques, and then introduced thermochronometry applications to the tectono-thermal history and provenance analysis of the Tarim Basin. In recent years, new theories and techniques for the apatite fission track, including the multi-kinetic annealing model, Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) testing, and fully automated counting of fission tracks in natural minerals, have been developed. Using apatite (U-Th)/He dating, the new FT-equivalent sphere correction model greatly reduced errors in the corrected He ages; the trapping model for the first time revealed how radiation damage impeded4He diffusion in apatite; and the radiation damage accumulation and annealing model effectively explained cases in the cratonic basins where ages of the apatite fission track were younger than that of the corresponding He. The measured low-temperature thermochronometry data and thermal modeling results indicated that the Bachu Uplift in the Tarim Basin experienced three cooling events related to the collisions of the Qiangtang Terrane, Lhasa Block and India Plate with the southern margin of the Eurasia continent at 185-140 Ma, 140-100 Ma and 75-50 Ma, respectively. The measured (U-Th)/He and fission track ages of the apatite from the boreholes' samples in the Tabei Uplift were older than the corresponding stratigraphic age, indicating that these ages had recorded the thermal information of the provenance-South Tianshan. The thermal modeling results revealed that the South Tianshan experienced the Late Miocene-Early Pliocene (15-5 Ma) rapid uplifting event. Finally, we rebuilt the tectonics-sedimentation coupling relationship between the northern Tarim Basin and South Tianshan.
© 2017, Editorial Office of Earth Science Frontiers. All right reserved.

ISSN号:1005-2321

卷、期、页:v 24,n 3,p79-93

发表日期:2017-05-01

期刊分区(SCI为中科院分区):无

收录情况:EI(工程索引)

发表期刊名称:Earth Science Frontiers

第一作者:常健,邱楠生

论文类型:期刊论文

论文概要:常健,邱楠生,Apatite low-temperature thermochronometry and applications to Tarim Basin in the Northwestern China,Earth Science Frontiers,2017,v 24,n 3,p79-93

论文题目:Apatite low-temperature thermochronometry and applications to Tarim Basin in the Northwestern China