basaltic rocks 中文意思是什麼
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Whereas the rocks in the ancient heavily cratered terrains were basaltic, the younger rocks of the northern lowlands resembled a more highly evolved type of lava called andesite : they contained more glass, more silica - rich minerals and fewer iron - bearing minerals
古老、充滿坑洞的地區，巖石屬于玄武巖，但北方低地較年輕的巖石卻類似一種更高度演化、稱為安山巖的熔巖：它們含有較多玻璃質、較多富矽礦物、以及較少含鐵礦物。 -
Based on the petrological, petrochemical and geochemical analyses about these rocks, it is concluded in this paper that the xenoliths were originated from the upper mantle, and comprised of both primitive pyrolite and the infusible solid residual of the upper pyrolite while the basaltic magma was melted out of it, which were brought up to the earth ' s surface via o1carnc eruption
根據其巖石學、巖石化學及地球化學特徵分析，包體來源於上地幔，其成因既有原始地幔巖，亦有上地幔巖經部分熔融出玄武巖漿后的難熔固相殘留物，被火山噴發攜帶至地表。 -
According to the sr - nd isotopic characteristics of peridotite xenoliths and their host basalts, it indicates that xenoliths in hannuoba, puning area may represent source area of the host basalt because of the xenoliths and host rocks being in the same plot ; however, the xenoliths is not directly related to their host rocks of the others area for the xenoliths plot out of the range of their host basaltic rocks. thermal dynamics calculation shows that the peridotite xenoliths are formed in the condition of pressure of 9. 45 - 25kb and temperature of 945 - 1281
橄欖巖包體及其寄主玄武巖的sr - nd同位素研究表明，漢諾壩與普寧地區部分包體樣品投點落在其寄主玄武巖nd和sr同位素的分佈范圍內，表明橄欖巖包體代表了寄主玄武巖的源區，而其它大部分地區的包體其寄主玄武巖范圍之外，表明寄主玄武巖和橄欖巖包體無成因聯系，橄欖巖包體只是偶然包體。 -
2. early jurassic mafic volcanic rocks in yanshan area were derived from decompression melting of an ancient continental lithospheric mantle, which had been previously metasomatized by subducted slabs during the closure of paleo - asian ocean ; the mantle source of late jurassic mafic volcanic rocks were contributed by dominant emi and insignificant subducted metasomatic components ; early cretaceous mafic volcanic rocks were derived from decompression melting of an ancient continental lithospheric mantle ( emi ). with regard to the basaltic lavas, the felsic rocks resulted from partial melting of continental crust, which closely related to basaltic underplating
2燕山地區早侏羅世中基性火山巖來自於早期俯沖交代的古老巖石圈地幔部分熔融作用，俯沖交代作用可能與早期古亞洲洋閉合事件有關；晚侏羅世中基性火山巖更多來自於類似於emi型地幔源區的部分熔融作用，俯沖交代成分貢獻很弱；早白堊世基性火山巖則來自於emi型地幔源區的部分熔融作用。
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