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8月中旬闭幕的第30届国际地质大会围绕“大陆地质”的主题,进行了广泛学术交流,在地质科学诸多领域获得了许多新的认识,提出了今后的研究方向。地质构造与演化、能源和矿产资源、环境保护等问题成了本次大会关注的热点。 在大陆地质构造与演化研究方面,与会代表对青藏高原形成演化和特提斯洋的古地理模式展开了热烈的讨论。他们利用地质、地球物理、地球化学、大地测量等研究提供的大量数据资料,论证了高原隆升的时空不均匀性、隆升速率、过程和机制。最新研究认为高原的大幅度快速隆升始于第四纪。引起高原隆升的动力学原因,除印度板块向北俯冲、挤压以外,强调了高原以北陆块的向南俯冲、推挤,提出“双向俯冲”模式;同时强调岩石圈深部热力作用即地幔热住对高原隆升所起的重要作用。
The 30th International Geological Congress, which closed in mid-August, conducted extensive academic exchanges around the theme of “Continental Geology,” gained many new understandings in many fields of geosciences and proposed future research directions. Geological structure and evolution, energy and mineral resources, environmental protection and other issues has become the focus of this conference. In the study of continental geotectonics and evolution, delegates heatedly discussed the formation and evolution of the Tibetan Plateau and the paleogeographical model of the Tethys Ocean. Using large amounts of data provided by studies such as geology, geophysics, geochemistry and geodesy, they demonstrate the temporal and spatial heterogeneity, uplift rates, processes and mechanisms of plateau uplift. The latest research suggests that the rapid rapid uplifting of the plateau started in Quaternary. In addition to the northward subduction and compression of the Indian plate, the dynamic cause of the uplift of the plateau emphasizes the southward subduction and pushing of the continental block to the north of the plateau and proposes a “two-way subduction” mode. At the same time, it emphasizes the deep thermal effect of the lithosphere The important role of the hot mantle in the uplift of the plateau.