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康滇地区为扬子地块西南缘的一个二级构造单元,前人将该区的前震旦系基底划分为下部的太古宙—古元古代结晶基底和上部中元古代浅变质褶皱基底,前者以康定群(康定杂岩)和大红山群深变质岩系为代表,后者包括会理群、河口群、昆阳群等。虽然康滇地区各元古宙地层单元研究程度较高,积累资料丰富,但由于测年对象的不同及对年龄的解译存在诸多问题和争议,众多学者对区内元古宙地层演化各持己见,没有统一认识。混乱的局面不利于区内矿床的成矿理论研究与找矿勘探工作的开展,因此区内元古宙
The Kangdian area is a secondary tectonic unit in the southwestern margin of the Yangtze block. The predecessors divided the former Sinian basement into the Lower Archean-Paleoproterozoic and Upper Mesoproterozoic metamorphic fold basement. The former Kangding Group (Kangding Complex) and Dahongshan Group deep metamorphic rocks as the representative, which includes Huili Group, estuaries, Kunyang group. Although the study of Proterozoic stratigraphic units in Kang-Dian area is relatively highly studied and the accumulated data are rich, many scholars hold various questions about and argue about the evolution of Proterozoic strata in the region due to the differences in dating objects and interpretation of age My own opinion, there is no uniform understanding. Chaotic situation is not conducive to the study of the ore deposits in the region and prospecting exploration work carried out, so the region Proterozoic