滇中(楚雄)晚三叠世盆地成因机制、聚煤古地理类型与找煤方向

Central Yunnan(Chuxiong) Late Triassic Basin Genetic Mechanism,Coal-Accumulating Paleogeographic Type and Coal Looking Orientation

滇中盆地是在长期隆起的川滇古陆核(习称康滇古陆)于印支晚期经剧烈沉降形成的中、新生代沉积盆地。其中的晚三叠世含煤岩系是滇中与川西南重要含煤层位。通过对该区历年煤炭资源地勘资料、区域地质调查与科研成果的综合分析,在盆地成因、古构造活动与后期改造及聚煤古地理类型方面形成了新的认识,提出了在原大、中型煤矿区外围深部有利地带寻找隐伏煤田的具体意见,企盼滇中盆地的找煤工作有新的突破。

The Central Yunnan Basin is a Mesozoic, Cenozoic basin was formed in the long-term uplifted Sichuan-Yunnan old continental nucleus （customary Kangdian old land） after acutely subsided during Late Indo-Chinese Epoch. The basin＇s Late Triassic coal-bearing strata aret the major coal-bearing horizon in central Yunnan and southwestern Sichuan. After comprehensively analyzed the arca＇s coal resources exploration data, regional geological surveying and research results accumulated over the years, new knowledge on basin genesis, paleostrncture and posttectonic deformation and coal-accumulating paleogeographic type. Then put forward concrete adviccs on hidden coalfield looking in favorable position of peripheral original large and medium mining areas, and looking forward new breakthrough in coal looking in the Central Yunnan Basin.