| 辽河群孔达岩系原岩建造及沉积环境分析 |
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| 引用本文： | 吴春林,张福生.辽河群孔达岩系原岩建造及沉积环境分析[J].国土资源,1995(4). |
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| 作者姓名： | 吴春林 张福生 |
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| 作者单位： | 辽宁地勘局区域地质调查队 |
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| 摘 要： | 辽宁省辽河群孔达岩系分在于营口－草河口复向斜南北两翼，主要由各类片岩、变粒岩、片麻岩夹斜长角闪岩、大理岩组成，为高绿片岩相和低角闪岩相，原岩属碳酸盐岩富碳的陆源碎屑－粘土沉积建造。孔达岩系中石墨稳定同位素研究表明，石墨与有机墨有关，可能来源于低等生物；沉积时期的古气候为温湿－亚热带，沉积物质来源于海底火山喷发和陆源碎屑，沉积环境为浅海微淡化水体，低能、强还原环境的泻湖相。
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| 关 键 词： | 辽河群，孔达岩系，原岩建造，泻湖相 |
PROTOLITH FORMATION AND SEDIMENTARY ENVIRONMENT OF KONGDA ROCK SEKIES IN LIAONING GROUP |
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| Wu Chunlin Zhang Fusheng.PROTOLITH FORMATION AND SEDIMENTARY ENVIRONMENT OF KONGDA ROCK SEKIES IN LIAONING GROUP[J].Land & Resources,1995(4). |
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| Authors: | Wu Chunlin Zhang Fusheng |
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| Abstract: | The kongda rock series in Liaohe Group, occurring on the south and north wings ofYingkou-Chaohekou synclinorium ,are mainly corisisted of schist,leptynite,gneiss, secondlyamphibolite and marble interbeded in above rocks,which all are of high-greenshist and low-amphibolite facies and their protolith is carbonate-bearing carbon-rich terrigenous clay sedi-mentary formation. The studies on stable isotopes from graphite in kongda rock series showthat the graphite is related with organic carbon which probably stemed from the lower-gradeliving beings;during sedimentation,the palaeoclimate vvas temperate humid-subtropical zoneand the sediments originated from submarine volcanic eruption and terrigenous clasts;thesedimentary environment was a lagoonal facies which the water body was slightly diluted inshallow sea and in an environment of strong reduction. |
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| Keywords: | Lagoonal facies Protolith formation Kongda rock series LiaoheGroup |
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