PROGRESS IN REGIONAL GEOLOGICAL SURVEYS INSHANDONG PROVINCE OVER THE PAST TEN YEARS
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摘要: 山东省近十年来采用新的填图方法，在完成１∶２０万区调修测、１∶５万区调及全省地层清理工作中取得一些新的进展。地层研究方面重新厘定了泰山岩群、胶东岩群及早古生代地层的岩石地层单位及时代归属，并新建立白垩纪正常沉积的大盛群。侵入岩方面初步建立了全省岩石谱系的划分系统，尤其是从前寒武纪变质岩系中划分出许多已变质与变形的古老深成侵入岩。从而对全省地质构造演化特征取得了一些新的认识。Abstract: During the last ten years,by using the new mapping method some prominent advances and results have been achieved in completing 1∶200 000 regional revision surveys,1∶50 000 regional surveys and stratigraphic purification in Shandong province.With regard to the Precambrian metamorphic stratigraphy,the Bureau has revised the lithostratigraphic division and age assignments of the Taishan Group Complex,Jiaodong Group Complex and Early Paleozoic strata and established the Cretaceous Dasheng Group.In the respect of intrusive rocks,the hierarchical system of intrusive rocks in the whole province has been preliminarily established.In particular,many metamorphosed and deformed older plutonic rocks have bee separated from the Precambrian metamorphic rock series.Thus some new and much deepergoing ideas has been got about the features of geological and structural evolution of the whole province.
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Keywords:
- regional survey /
- Precambrian metamorphic rocks /
- unit and superunit /
- progress
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