Hornblende bearing varieties bridge the gap over to amphibolites which are in bands and dikes . 含角閃石的變種填補(bǔ)了帶狀和脈狀角閃巖的中間相。
Albite - epidote - amphibolite facies 鈉長簾閃巖相
The metamorphic process in the formation of garnet amphibolite along the china - pakistan highway profile , west kunlun orogenic belt 西昆侖造山帶中巴公路段石榴角閃巖形成的變質(zhì)地質(zhì)過程
Lots of information suggest that the metamorphism process of this area are from granulite facies to amphibolite facies and the retrograded metamorphic path is basically a cw nearly isothermal decompressional evolvement trend 各種信息表明本區(qū)的變質(zhì)作用是由麻粒巖相退變到角閃巖相。退變質(zhì)軌跡基本上是一個順時針近等溫減壓型演化趨勢。
Based on the 1 : 50000 regional geological survey , the sertengshan rock group is revised , involving the schist and marble of low - amphibolite to high - greenschist facies , which are distributed in middle and west inner mongolia 摘要根據(jù)近年完成的1 : 5萬區(qū)域地質(zhì)調(diào)查成果及綜合研究,將分布于內(nèi)蒙古中部色爾騰山、大青山、西部烏拉特后旗以及阿拉坦敖包、疊布斯格等地的低角閃巖相高綠片巖相的片巖、大理巖系厘定為色爾騰山巖群。
Subordinate are plagioclase granite dike , layered tonalite , tonalitic conglomeration dispersed in amphibolite , ultramafic rock and metabasalt etc . . plenty of igneous accumulated banding were discovered in amphibolite from nujinshan and bujing area some residual clinopyroxene also were found in a few of sample 超鎂鐵巖多為構(gòu)造透鏡體分布于斷裂帶中,多蝕變?yōu)樯呒y石巖,在牛井山及布京一帶已發(fā)現(xiàn)并圈定了9個巖體(塊) 。
All these rocks aforementioned are mainly parametamorphic rocks . milan , kaqiang and alamasi group underwent high - grade metamorphism of amphibolite facies , together with weak migmatism . they share the same geochemistry and total ree and many other chracters 二者主要為副變質(zhì)巖石,米蘭巖群和卡羌巖群、阿拉瑪斯巖群變質(zhì)較深為角閃巖相,普遍弱混合巖化,它們具有非常相似的地球化學(xué)特征,稀土元素總量及其它特點(diǎn)一致或相近。
According to representative section , tectono - stratigraphic unite , rock association character , beidahe group is divided a , b , c petrofabrics . the lithology of a petrofabric is amphibolite , gneiss interlated with schist , accidental marble . the lithology of b petrofabric is schist interlated with marble , quartzite 根據(jù)代表性剖面的研究,在構(gòu)造巖石地層單位序列劃分變質(zhì)地層的原則指導(dǎo)下,按變質(zhì)巖石組合特征劃分了a 、 b 、 c三個巖組。
Based on the studies of petrotexture , structural deformation and the relevant metamorphism , this paper indicates that this peridotite massif is the product of ultramafic magma cumulated at the crust - mantle transtion zone and has undergone the early stage of plastic deformation under the condition of granulite facies ( 800 ) and late ductile shearing at amphibolite and greenschist facies in relevance to uplifting 本文通過巖體的結(jié)構(gòu)、構(gòu)造變形及相應(yīng)的變質(zhì)作用研究,提出了該橄欖巖體是由超基性巖漿在殼幔過渡帶結(jié)晶而成,并經(jīng)歷了與圍巖一致的麻粒巖相( 800 )條件下的早期塑性變形以及角閃巖相和綠片巖相退化變質(zhì)條件下與逆沖上升有關(guān)的韌性剪切變形。
Detail mapping shows that the yagan mcc consists of crystallized metamorphic core ( low plate ) , detachment zone and upper plate . the metamorphic core consists of can be further subdivided into two level parts low - level high metamorphic and upper - level shallow metamorphic structural slice and between them there exists a ductile shear zone . thus the whole texture of the mcc is characterized by " three layers and tow zones " this reveals a process of extensional uplift of poly - level slices by poly ductile shear zones , a characteristics of poly - level extensional structural systems . the deformational environments change vertically in a sequence of high amphibolite facies 亞干變質(zhì)核雜巖由下盤結(jié)晶巖系變質(zhì)核、拆離帶和上盤巖系構(gòu)成,其中,變質(zhì)核由四個單位及許多花崗巖體(脈)組成,可進(jìn)一步分為中深和中淺變質(zhì)兩個構(gòu)造單位(巖片) ,之間發(fā)育次級韌性拆離帶(花崗質(zhì)糜棱巖帶) ,加上上盤總體構(gòu)成“三層兩帶”的結(jié)構(gòu)特點(diǎn)。
英文解釋
a metamorphic rock composed chiefly of amphibole and plagioclase
百科解釋
Amphibolite () is the name given to a metamorphic rock consisting mainly of amphibole, especially the species hornblende and actinolite. A holocrystalline plutonic igneous rock composed primarily of hornblende amphibole is called a hornblendite, which are usually crystal cumulates.