Sedimentary Environment of Host Rocks in the Sawaya' erdun Gold Deposit of Xinjiang
Author(s): PENG Jing, LONG Xun-rong, LI You-guo
Pages: 1007-1014
Year: 2010 Issue: 6
Journal: GEOLOGY AND PROSPECTING
Keyword: 萨瓦亚尔顿金矿床; 容矿岩系; 稀土元素; 微量元素; 沉积环境;
Abstract: 位于新疆的萨瓦亚尔顿金矿床是我国西部的一个大型金矿床,矿区断裂和褶皱构造发育,总体构造线方向为NE-SW向,其断裂构造控制了矿区破碎蚀变带的展布,含矿岩层主要为上石炭统中段地层.为了揭示新疆萨瓦亚尔顿金矿床容矿岩系的沉积环境.文章对容矿岩石稀土元素和微量元素的地球化学特征进行了分析.研究表明,萨瓦亚尔顿金矿床容矿岩系的稀土配分,负Eu异常现象较明显,这与此类岩石的富含钙质杂基和异常高的K2O含量有关;根据容矿岩系稀土元素及微量元素地球化学特征,结合地层结构特点和化石特征,可判别其容矿岩系沉积时的构造环境应属大陆岛弧,其容矿岩系形成于半深海-浊流沉积,弱还原环境.
Pages: 1007-1014
Year: 2010 Issue: 6
Journal: GEOLOGY AND PROSPECTING
Keyword: 萨瓦亚尔顿金矿床; 容矿岩系; 稀土元素; 微量元素; 沉积环境;
Abstract: 位于新疆的萨瓦亚尔顿金矿床是我国西部的一个大型金矿床,矿区断裂和褶皱构造发育,总体构造线方向为NE-SW向,其断裂构造控制了矿区破碎蚀变带的展布,含矿岩层主要为上石炭统中段地层.为了揭示新疆萨瓦亚尔顿金矿床容矿岩系的沉积环境.文章对容矿岩石稀土元素和微量元素的地球化学特征进行了分析.研究表明,萨瓦亚尔顿金矿床容矿岩系的稀土配分,负Eu异常现象较明显,这与此类岩石的富含钙质杂基和异常高的K2O含量有关;根据容矿岩系稀土元素及微量元素地球化学特征,结合地层结构特点和化石特征,可判别其容矿岩系沉积时的构造环境应属大陆岛弧,其容矿岩系形成于半深海-浊流沉积,弱还原环境.
Citations
- Trace element geochemistry and sedimentary provinces:study from the Tasman geosyncline Bhatia M B.Taylor S R 2)
- Plate tectonic and geochemical composition of sandstone Bhatia M R
- Rare earth element geochemistry of Australian Paleozoic graywackes and mudrocks:provenanee and tectonic control Bhatia M.R
- Trace element characteristics of greywackes and tectonic setting discrimination of sedimentary basins Bhatia M R.Crook K A
- Cosmochemistry of the rare earth elements:Meteoritee studies Boynton W V
- Practical geochemistry of the REE Chen De-qian.Chen Gang
- Metallogcnic characteristics and origin of Sawaya' erdun gold deposit,southwestern Tianshan mountain Du En-she.Chen Jing.Zhang Neng-jun
- Geochemistry Han Yin-wen.Ma Zhen-dong.Zhang Hong-fei.Zhang Ben-ren
- Rare earth in European shales:a redeterruination Haskin M A.Haskin L A
- Tectonic discriminations of sandstones geochemistry from the middlelate Devonian Liuling group in Shanyang area,southern Shanxi He Zheng-jun.Niu Bao-gui.Ben Ji-shun
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