Eclogites in guanshan ; meta-aegirine-bearing alkali granites ; dioritic porphyrite ; contact relation ; isotopic age .
官山榴辉岩;变质含霓石碱性花岗岩;闪长玢岩;接触关系同位素年龄。
The understanding of the origin and distribution of lunar granites is critical for understanding the history of lunar evolution and magmatism , so much attention should be paid to the studies of lunar granites in new deep space exploration programs .
" Based on the testing results and epa standards , we can conclude that the most popular granites used as countertop surfaces pose no health threat to homeowners , " said l.l. chyi , a ph.d. and professor of geology and civil engineering at the university of akron in ohio .
The diversity of granites resulted in various genetic explanations of granites .
花岗岩的多样性决定了对花岗岩成因的各种解释。
The mineral resources relating to granites which are widespread in gansu province , are rich .
甘肃省花岗岩分布广泛,与其有关的矿产资源也十分丰富。
This paper provides evidence of u-pb dating on inherited zircons from peraluminous granites for the paleogeographic connection between the lhasa terrane and northern australia .
本文提供了拉萨地块与澳大利亚大陆北缘具有古地理联系的过铝质花岗岩继承锆石u-pb年龄证据。
Haitan island is a main district with eolian sands in fujian province . Eolian sands , granites and wind power are the three major natural resources in the island .