衡阳盆地西北缘物化探特征及其找矿意义

程云涛, 刘俊峰, 曹创华, 王荡

Ore prospecting on northwestern margin of Hengyang Basin using geophysical and geochemical information

CHEN Yun-Tao, LIU Jun-Feng, CAO Chuang-Hua, WANG Dang

图1 衡阳盆地西北缘地质 1—古近系;2—白垩系上统;3—白垩系下统;4—侏罗系下统;5—三叠系;6—二叠系;7—石炭系;8—泥盆系上统;9—泥盆系中统;10—奥陶系;11—寒武系;12—辉绿岩;13—震旦系;14—南华系;15—青白口系;16—角岩、片岩捕掳体;17—煌斑岩;18—白垩系细粒二云母二长花岗岩;19—细粒二云母二长花岗岩;20—细粒黑云母二长花岗岩;21—中粒斑状黑云母二长花岗岩;22—中粒斑状二云母二长花岗岩;23—粗粒斑状二云母二长花岗岩;24—中粒斑状黑云母二长花岗岩;25—粗粒斑状黑云母花岗岩;26—志留系二云母二长花岗岩;27—断裂构造;28—不整合地质界线;29—物化探剖面

Fig.1 The geological map of the northwestern margin in Hengyang Basin 1—Paleogene;2—upper Cretaceous;3—lower Cretaceous;4—lower Jurassic;5—Triassic system;6—Permian system;7—Carboniferous system;8—upper Devonian;9—middle Devonian;10—Ordovician system;11—Cambrian system;12—diabase;13—Sinian system;14—south China series;15—Qingbaikou system;16—hornstone and schist xenoliths;17—lamprophyres;18—Cretaceous fine-grained micaceous monzonite granites;19—fine-grained micaceous monzonite;20—fine-grained biotite adamellite;21—medium-grained porphyritic biotite monzonite granite;22—medium-grained porphyritic dimica monzonite granite;23—coarse grained porphyritic dimicaceous monzonite granite;24—medium-grained porphyritic biotite monzonite granite;25—coarse grained porphyritic biotite granite;26—Silurian monzonite adamellite;27—fault structure;28—unconformity boundary;29—geophysical and geochemical profile