中国地质调查局: 拉脊山昂思多(J48E023001和J48E023002图幅之内)1∶25 000蛇绿岩-增生杂岩专题地质图数据库

专题地质填图是揭示造山带结构、组成及其时空配置关系与形成机制的有效手段。本专题坚持“以块体和基质作为混杂岩地质调查和地质填图的基本单位”以及“物质组成与结构构造并重”的地质填图理念，开展并完成了祁连造山带拉脊山蛇绿岩—增生杂岩1∶25 000专题地质填图。通过专题地质图，精细刻画了拉脊山混杂岩的结构与组成、成因类型和时空配置关系，重建了南祁连早古生代大洋板块地层序列，划分了大地构造相，揭示了原特提斯洋沟—弧—盆体系演化历史。拉脊山昂思多蛇绿岩—增生杂岩专题地质图、混杂岩填图方法和系列填图成果彰显了基础地质调查是解决关键地质科学问题和提升基础地质理论认识的最佳途径，也体现了专题地质填图是加快地调科研融合与地质调查转型升级的最有效方式。

Specialized geological mapping is an effective means to reveal the structure, composition, spatial-temporal configuration relationship and formation mechanism of orogenic belts. This project adheres to the geological mapping concepts of "taking blocks and matrix as the basic units for geological survey and mapping of melanges" and "equal emphasis on material composition and structural texture", and has carried out and completed 1:25000 scale specialized geological mapping of the Lajishan ophiolite-accretionary complex in the Qilian orogenic belt. Through the specialized geological map, the structure, composition, genetic types and spatial-temporal configuration of the Lajishan melange were finely depicted, the Early Paleozoic oceanic plate stratigraphic sequence of the southern Qilian Mountains was reconstructed, tectonic facies were classified, and the evolutionary history of the Proto-Tethys Ocean trench-arc-basin system was revealed. The specialized geological map of the Lajishan Angsidu ophiolite-accretionary complex, the melange mapping method and a series of mapping achievements show that basic geological survey is the best way to solve key geological scientific problems and improve the understanding of basic geological theories, and also reflect that specialized geological mapping is the most effective way to accelerate the integration of geological survey and scientific research and promote the transformation and upgrading of geological survey.