| 胶东地区构造演化与古砂金找矿前景 |
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| 引用本文： | 孙岩,谭启新.胶东地区构造演化与古砂金找矿前景[J].海洋地质与第四纪地质,1996,16(1):77-84. |
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| 作者姓名： | 孙岩 谭启新 |
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| 作者单位： | 青岛地质矿产部海洋地质研究所 |
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| 摘 要： | 本文从大构造演化角度探讨了胶东地区构造演化的四个阶段（单独演化，碰撞对接，盆地形成及后期改造），并从地层建造，构造变劝，岩浆活动及生成机制等方面分析了四个演化阶段与古砂金成矿关系；指出了白垩系菜阳组，王氏组和第三系黄县组，尧山组四个构造层为区内主要找矿层位，预测了莱阳盆地东北部和黄县盆地南部边缘地区为今后找矿远景区。
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| 关 键 词： | 胶东地区 构造演化 金矿床 古砂金 找矿前景 |
TECTONIC EVOLUTION AND PALEO-PLACER GOLD PROSPECT OF JIAODONG AREA |
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| Sun Yan Tan Qixin Han Chunrui Liu Xiqing Liu Qirong.TECTONIC EVOLUTION AND PALEO-PLACER GOLD PROSPECT OF JIAODONG AREA[J].Marine Geology & Quaternary Geology,1996,16(1):77-84. |
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| Authors: | Sun Yan Tan Qixin Han Chunrui Liu Xiqing Liu Qirong |
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| Abstract: | Jiaodong massif,a product of the coaction of subduction-obduction and nappe-shear-ing translation-shearing during land-land collision of North China landmass and LowerYangtze landmass,is composed of 3 secondary tectonic elements,namely,Jiaobei massif,Jiao-Rong terrane and Wu-Rong juncture.And the massif has experienced 4 evolutionarystages,that is,isolation,collision-combination, basin development and post-basin re-working.This paper is an approach to sedimentary formations,teconic changes,magmat-ic activity,lithofacies and paleogeography of the 4 evolutionary stages,and their rela-tions with placer gold are analyzed. Structural layers formed during the latter two evolu- tionary stages are placer-gold targets,represented by Laiyang Formation and WangshiFormation of Cretaceous and Huangxian Formation and Yaoshan Formation of Ceno-zoic. We should pay special attentions to ancient channels,lake deltas and ancientresidues in the formations. And prospect areas are north edge of the Laiyang Basin,south edge of the Huangxian Basin and the transitional zone to the Jiaobei uplift. |
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| Keywords: | Jiaodong area tectonic evolution mineralization relation prospect |
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