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构造地貌学被誉为揭开高原隆升历史的钥匙,但一直受困于年代学的制约。低温热年代学的成熟和进步可为构造地貌研究提供精确的年代学支持。综述了最近几年青藏高原隆起过程研究动态,重点讨论高原构造地貌学的发展问题。建议选取构造地貌发育过程中的直接信息载体(地质地貌岩体)以及相关沉积(新生代盆地沉积物、现代河流沉积物、阶地序列),采用多矿物(磷灰石、锆石等)裂变径迹和(U-Th)/He热年代学这些优势互补方法进行综合研究。通过对这些相互区别又相互联系的信号载体进行系统的年代学分析,据此可重建高原各块体的构造地貌发育过程。提出了几种可能的构造地貌发育模式,并指出低温热年代学信号解译中应当注意的问题。
Tectonic geomorphology has been hailed as the key to unraveling the uplift of the plateau, but has been trapped by the chronology. The maturity and progress of cryogenic geochronology can provide accurate geochronology support for tectonic geomorphology. The research progress of the uplift of the Tibetan Plateau in recent years is reviewed. The development of the plateau tectonic geomorphology is mainly discussed. It is suggested that the direct information carrier (geological and geomorphic rock mass) and related sediments (Cenozoic basin sediments, modern river sediments and terraces sequences) during the tectonic and geomorphological development should be selected and the fission path of multi-mineral (apatite, zircon, etc.) Trace and (U-Th) / He geochronology complementarity of these complementary methods to conduct a comprehensive study. Through systematic chronological analysis of the signal carriers which are mutually different and interrelated, the tectonic and geomorphic development of each block in the plateau can be reconstructed. Several possible development patterns of tectonic and geomorphology are proposed, and the problems that should be paid attention to in the interpretation of low-temperature thermochronological signals are pointed out.