| 构造解析、地质学研究范式与理论创新——藏东南侧向碰撞带构造演化研究实践 |
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| 引用本文： | 杨天南,薛传东.构造解析、地质学研究范式与理论创新——藏东南侧向碰撞带构造演化研究实践[J].地质学报,2022,96(5):1680-1696. |
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| 作者姓名： | 杨天南 薛传东 |
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| 作者单位： | 1) 中国地质科学院地质研究所，北京，100037;2) 昆明理工大学地球科学系，云南昆明，650093 |
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| 基金项目： | 本文为国家自然科学基金项目(编号92055206, 42163007)资助的成果。 |
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| 摘 要： | 运用板块构造理论解释造山带地质演化是当前地质学研究的难点，也是地质学基础理论创新的可能方向。包括印度 欧亚大陆侧向碰撞带在内的国内、外造山带构造演化尚未取得共识，大多表现为“大量高质量数据与诸多充满争议的演化模型共存”。产生这些争议的主要原因包括“高质量数据”的时、空分布样式未受足够重视、以及部分关键地质体物理属性鉴别存在争议。这些问题为地质学发展与理论创新留下了巨大的空间。持续10多年西南三江造山带区域地质填图、构造解析揭示了侧向碰撞带构造格架、地壳变形历史，提出了印度 欧亚大陆碰撞新的三阶段模型。这一研究实践表明，严格按照 “构造解析方法”体现的“三步骤”研究范式开展区域地质填图是造山带理论创新的基础与保障。区域地质填图是造山带研究中难度最大的工作之一，要求填图人员必须具备广泛、坚实的地质学理论基础，以及运用基础理论解决实际问题的能力。
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| 关 键 词： | 构造解析 三步骤研究程序 三江造山带 理论创新 区域地质填图 |
| 收稿时间： | 2022/4/27 0:00:00 |
| 修稿时间： | 2022/5/3 0:00:00 |
Structural analysis, the geological way of knowing, and development of geosciences: the Cenozoic tectonics of the oblique collision belt, SE Tibet |
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| Yang Tiannan,Xue Chuandong.Structural analysis, the geological way of knowing, and development of geosciences: the Cenozoic tectonics of the oblique collision belt, SE Tibet[J].Acta Geologica Sinica,2022,96(5):1680-1696. |
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| Authors: | Yang Tiannan Xue Chuandong |
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| Institution: | 1) Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China; 2) Department of Earth Sciences, Kunming University of Science and Technology, Kunming, Yunnan 650093, China |
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| Abstract: | Reconstructing tectonic evolution of any orogenic belts in term of plate tectonics has long been a challenge and a key point in progress of geological sciences. No commonly widely accepted tectonic model of most orogenic belts including the oblique collision belt between India and Eurasia appeared so far. Such a situation is unusual in that there has already been a tremendous body of high quality geological data for each orogenic belt. We propose two possible reasons for such situation including the absences in detailed analysis of the temporal and spatial distribution of these data and a few misinterpretations of some key geological units. We have conducted detailed geological mapping and structural analysis in the Sanjiang orogenic belt, northern segment of the oblique collisional belt for more than ten years. This has enabled the identification of a new Cenozoic tectonic framework and the complete crustal deformation history of the oblique collisional belt, as well as a new India Eurasia collision model consisting of three stages. Our experience in the oblique collisional belt demonstrates that regional geological mapping strictly following the three steps process as well exhibited by the structural analysis method likely is the best way to improve our understanding of any orogenic belt. Unfortunately, effective geological mapping is one of the hardest job in our geological society, which requires the mappers are all well educated and rigorously trained. |
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| Keywords: | structural analysis three steps study process Sanjiang orogenic belt progress in geology regional geological mapping |
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