火山塊集巖 的英文怎麼說
中文拼音 [huǒshānkuāijíyán]
火山塊集巖
英文
volcanic agglomerate-
The mine zone is sandwiched between an overlying block of flows, pillow lavas and minor pyroclastics, and underlying agglomerates, tuffs, and more massive diabase bodies.
含礦帶夾在上覆的巖流、枕狀巖流和少量火山碎屑巖塊與下伏的集塊巖、凝灰巖和塊狀輝綠巖體之間。We deduce that it is a relic old crust that was brought upwards during the formation of neo - tethyan ophiolite. the step heating 40ar - ' 9ar spectra show that during 100ma, luobusha ophiolite suffered intensely alternation, which affected distinctly the k - ar system ; during 771ma some basalt formed in the country rock of xiubugabu ophiolite ; during 55ma, the pillow basalt of rikangba ophiolite affected by a strong thermal event ; all the variety of ages illustrates possible impacts of the subduction - collision between india and eurasia. through dissecting mainly the gabbro of luobusa ophiolite and studying the 40ar / 39ar
~ （ 40 ） ar ~ （ 39 ） ar階段升溫年齡圖譜顯示， 100ma左右羅布莎巖體經歷了較強的後期蝕變作用，對其k ? ar體系造成明顯影響； 77 1ma休古嘎布巖體圍巖中形成玄武質火山集塊巖； 55ma日康巴巖體巖石枕狀玄武巖受到較強熱事件影響；這些~ （ 40 ） ar - ~ （ 39 ） ar年齡上的變化顯示了印度板塊與歐亞板塊俯沖?碰撞對該區的強烈影響。All of the mafic samples have age - corrected moderate enriched sr and enriched nd isotopic ratios and the felsic rocks span larger range in the initial sr and nd isotopic ratios than mafic volcanics, similar to isotopic compositions of lower crust of north china block
在sr - nd同位素組成上，中基性火山巖為中等富集的sr和低的nd同位素比值；中酸性火山巖的sr同位素比值總體較中基性巖高且變化大，類似華北陸塊下地殼巖石的同位素組成特徵。
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