新生代火山岩中的幔源包体可以提供有关上地幔的直接信息。
Mantle xenoliths brought up by Cenozoic volcanic rocks onto the earth surface may provide direct information about the upper mantle beneath the volcanic region.
藏北羌塘火车头山新生代火山岩可区分为钙碱性及碱性两个不同的系列。
The Cenozoic volcanic rocks in Huochetou mountain, North Qiangtang can be divided into two different series.
在华北地台北缘中新生代火山岩发育区，发现大型铀钼矿床，其外围被第四系广泛覆盖。
A large U-Mo deposit was found on the northern margin of north China Platform, where the Mesozoic and Cenozoic volcanics are developed. This area is widely covered by the Quaternary sediments.
郯庐断裂带中段的新生代火山岩以碱性系列的碱性橄榄玄武岩、碧玄岩和霞石岩为主，其中又以钠质亚系的岩石为主。
According to the main rock-forming minerals in them, the Cenozoic volcanic rocks are mainly alkali olivine basalt, basanite and nephelinite.
它是中生代硅酸过饱和并富钾质的火山岩系的产物，其意义可与产于新生代碱性玄武岩系中的晶洞钠沸石对比。
It is a product of volcanic rocks of the mesozoic era over-saturated with silica and rich in potash. it can be compared with geode natrolite that producedin alkaline basalt series of the cenozoic era.
酒西盆地旱峡和红柳峡等地有基性火山岩产出，它们曾一度被认为是新生代构造运动的产物。
The volcanic rocks from Hanxia and Hongliuxia in Jiuxi basin are considered to be resulted from Cenozoic tectonic events.
对二连盆地北部地区中、新生代典型火山岩地球化学研究表明，该区中、新生代强烈的岩浆活动以酸性、中性火山岩为主。
The study of the geochemistry for typical Meso Cenozoic volcanic rocks from northern Erlian basin shows that the main magmas are acidic to neutral.
对二连盆地北部地区中、新生代典型火山岩地球化学研究表明，该区中、新生代强烈的岩浆活动以酸性、中性火山岩为主。
The study of the geochemistry for typical Meso Cenozoic volcanic rocks from northern Erlian basin shows that the main magmas are acidic to neutral.
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