s type granite s 类型花岗岩s wave s 波sabugalite 铝铀云母sac shaped 囊状的saccharoidal 砂糖状的saddle 鞍saddle pebble 马鞍石safe yield 可靠产量safe yield of stream 河的安全给水量safety appliance 保险装置safety factor 安全系数safety joint 安全接头safety valve 安全阀safety zone 安全地带safflorite ...
1、常见岩石类型区别S型花岗岩(S type granite)是一种以壳源沉积物质为源岩,经过部分熔融、结晶而产生的花岗岩。“S”指沉积一词的第一个字母。属造山期花岗岩,产于克拉通内韧性剪切带和大陆碰撞褶皱带内,以堇青石花岗岩和二云母花岗岩组合等过铝质花岗岩为代表。1I型花岗岩(I type granite)是一系列准铝质钙碱性...
Both methods also show that Rodinia was a period of relatively low S-type zircon production, compared with the adjacent periods of supercontinent formation: Gondwana and Nuna. Turbidites are an essential component of the S-type granite source region: greywackes provide quartz and feldspar and the ...
关键词: 层控钨锡矿; 玄武岩; "S"型花岗岩; 地层重熔; 叠加改造; 再分配 中图分类号: P618.67; P611.6; P588.145 文献标志码: A doi: 10.3975/cagsb.2015.04.05 Stratabound Tungsten and Tin Related to Basic Rocks: the Precursor of the S-type Granite-related W-Sn deposits—Examples from the W...
Phase equilibrium modelling of granite magma petrogenesis: B. An evaluation of the magma compositions that result from fractional crystallization The modelled magmas and the fractionated mineral assemblages are compared to the S-type granites of the Peninsula pluton, Cape Granite Suite, South Africa,.....
I-type granites are thought to have been derived from deep crust formed by underplating and thus are infracrustal, in contrast to the supracrustal S-type source rocks.Crystallisation of feldspars from felsic granite melts leads to distinctive changes in the trace element compositions of more ...
Eutectic and minimum points of the sub-aluminous haplogranite system at aH2O = 1.0 (black dots), 0.5 and 0.4 (white dots) are also reported (adapted from the literature38,60). Abbreviations: Qz quartz. Full size image As evident from the composition of Type-I glasses, the pristine ...
Pan Y, Breaks FW (1997) Rare-earth elements in fluorapatite, Separation Lake area, Ontario: evidence for S-type granite-rare-metal pegmatite linkage. Can Mineral 35:659–672 Google Scholar Pan Y, Dong P (2003) Bromine in scapolite and sodalite: X-ray microprobe analysis, exchange experimen...
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