优地槽
- 网络Eugeosyncline
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川西盐边群的优地槽岩石组合
Eugeosyncline rock association of Yanbian group in Western sichuan , China
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随后大洋底板活动的减弱,则招致褶皱陆壳的剥蚀,并伴有广泛展布的玄武岩岩浆作用,以及大洋周边优地槽区的稳定化。
The following decrease of the oceanic floor spreading activity results in degradation of folded continental crust , accompanied by wide extending of basalt magmatism and stabilization of eugeosyncline regime on the peripheries of the oceans .
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该成矿带位于北祁连加里东优地槽的东南缘。这里是向南俯冲敛合板块残留的岛弧。CAB插槽42和地、CAB插槽5。
Being the residual island are of the convergent plate subducted to the south , the central Baiyin Minerogenetic Belt is located at the southeast edge of the north Qilian Caledonian eugeosyncline .
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在Blatt等(1972)图解中,落入优地槽区。
Fall into slot in Blatt etc. ( 1972 ) map .
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祁连优地槽区块状硫化物矿床形成地质环境的初步对比研究和探讨
A preliminary investigation into the ore forming environment of the massive sulfide deposits in the Qilian eugeosyncline
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区内含蓝闪石岩的原岩包括优地槽内发育的各类富钠火山岩、含富钠火山质的沉积岩。
The primary rocks include the various sodium-rich volcanic rocks and the sedimentary rocks with sodium-rich volcanic materials which are well developed in the North Qilian eugeosyncline area .
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阐述了华南东部震旦-志留纪大地构造属性是大陆边缘弧(优地槽型建造)和弧背盆地(冒地槽型建造)造山带;
It is explained that the Sinian-Silurian geotectonic attribution of the east part of South China is an orogenic belt made up of a continental marginal arc ( eugeosynclinal type formation ) and a retroarc basin ( miogeosynclinal formation ) .