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- calc alkali rock series 钙碱岩系
- Keywords Alkali rock series;carbonatite;comagma;syngenesis;Bayan Obo; 碱性岩系;碳酸岩;同源岩浆;同生作用;白云鄂博;
- alkali rock series 碱性岩系
- Ore-forming has close relation with rich-alkalescence geotherm and calc alkali syeogranite, which belongs to middle temperature geothermal beryllium deposit, and formed in Mesozoic Yanshan period. 矿床的形成与富碱性热液和钙碱性正长花岗岩有关,为中温热液型铍矿床,形成于中生代燕山晚期。
- Based on the contrasting of the formation time of ore hosted rock, alkali rock, diabase and uraninite, and study on the geochemical features of the alkali rock, The study pres... 本文根据含矿主岩、碱交代岩、辉绿岩与沥青铀矿在形成时间上的对比,以及碱交代岩的地球化学特征研究,认为石土岭铀矿床的碱交代作用主要是地幔流体沿深层次伸展构造上升过程中产生的交代作用形成的。
- WHAT IS THE AVERAGE CONCENTRATION OF ALUMINIUM IN HIGH ALKALI ROCKS? 在强碱岩石中铝的平均浓度是多少?
- They also do not belong to the south meta-volcanic rock series of Northern Qilian Caledonides tectonic belts. 也不属于北祁连加里东构造带南带变质火山岩系的一部分。
- The emergence stratum mainly is Palaeozoic sediment rock series, drape, rift grow,magma activity is delicacy. 出露地层主要为一套古生代沉积(浅变质)岩系，褶皱、断裂构造发育，岩浆活动微弱。
- In South China,the Early Cambrian black rock series is rich in metallic and nonmetallic mineral ersources. 我国南部早寒武世黑色岩系中,蕴藏丰富的金属和非金属矿产。
- The pre-Devonian "Gomori Group" shallow metamorphic rock series are mostly redelineated as the Permian strata. 解体了测区南部前泥盆系“戈木日群”浅变质岩系，大部分厘定为二叠系；
- Abundant copper material was derived from volcanic rock series (olivine tholeiite) in the rift. 丰富的铜质来自巨厚的裂谷火山岩系（橄榄拉斑玄武岩）。
- Wangjiawaizi gold deposit occurrs in Lower Proterozoic opimetamorphic rock series. 王家崴子金矿床赋存于辽南古元古代浅变质岩系中。
- Volcanic rock series include mainly the shoshonite series and subordinately the high-K calc-alkalic series. 火山岩系列主要为橄榄玄粗岩系,其次为高钾钙碱性岩系;
- calc alkali series 钙碱系
- The metallogenic substance mainly comes from the Archeozoic metamorphic rock series in basement. 成矿物质主要来源于基底太古界变质岩系。
- The Precambrian crystalline rock series in the Yadong area is previously called "the Nyalam Group". 摘要藏南亚东地区前寒武纪结晶岩系以往统称为“聂拉木群”。
- They are controlled by shear fracture belt of epimetamorphic rock series of Precambrian Period. 主要赋存于前寒武纪浅变质岩系中,受剪切断裂带控制。
- The meta-intrusives of Wutai stage are Shawobulak gneissic rock suite basically in order, including TTG and adamellite rock series. 为一套基本有序的变侵入岩系列，包括TTG和二长花岗岩两个岩系。
- The meta- intrusives of Wutai stage are Shawobulak gneissic rock suite basically in order,including TTG and adamellite rock series. 为一套基本有序的变侵入岩系列 ,包括 TTG和二长花岗岩两个岩系。
- This kind of soil contains much alkali. 这种土壤含碱丰富。
