从海洋角度看中国大地构造编图进展

大地构造图反映着作者对大地构造演化过程和动力机制的理解,往往以某种大地构造观点为指导。经历了20世纪七八十年代百家争鸣的大地构造编图时代以后,随着板块构造理论的引进,各家观点在承认板块构造理论的同时,表述各有侧重。地质地球物理调查是大地构造编图的资料基础,近年来,调查资料无论在数量上还是在精度上,都有较大的突破。但是,海区的大地构造编图还存在一些问题,就是海区调查研究基础与陆区相比还相对薄弱,近十年来海区的地调科研成果也没有表现在大区域的,尤其是涵盖全海区或整个中国海陆的大地构造图上。多种地球物理资料的综合研究,可以作为中国海陆大地构造对比和研究的纽带,地质、地球物理和地球化学方法和资料的综合应用,可作为大地构造编图的重要基础。从一个海洋地质构造工作者的角度,在阐释对我国大地构造编图的历史、观点、资料、成果及努力方向理解的基础上,希望通过正在执行的"中国海陆大地构造格架图",为编制中国大地构造图的思路做一个新探索。

A PROGRESS REVIEW OF TECTONIC MAP COMPILATION IN CHINA IN PERSPECTIVE OF OFFSHORE MAPPING

A tectonic map is a vehicle to express author’s understanding of tectonic patterns and its evolution processes and dynamic mechanism,under the guidance of a tectonic theory.The Plate Tectonics Theory was established during the 1970s and 1980s after a long time of debate,and has been accepted by most of the tectonic geologists of the world.However,arguments remain in tectonic map compilation due to the diverse understanding of the mapping elements selected by different authors.The compilation of a tectonic map lays its basis on data accumulation.A great amount of high quality geological and geophysical data has been acquired recently in China,in particular in China Seas.However,the survey and research data in China Seas in the past ten years have not yet been integrated into a tectonic map covering the whole country,including both land and sea.And the understanding of tectonics in offshore China is far behind that in the land portion.Therefore,an integrated or comparative study on various geological,geophysical and geochemical data or methods from a unified viewpoint of both land and sea has become an urgent need to the study of the tectonics in China.In this paper,we,from a standpoint of marine tectonic study,made a review on the history,tectonic theories,data availability concerning Chinese tectonic map compilation and discussed the way for improvement.The methods we used in the compilation of "Tectonic Framework Map of China Seas and Land" are introduced as a new try to solve the problems mentioned above.