isoma meaning in Chinese

五十马
伊曾马
矶间

The results of combined internal mineral separates and whole - rock sm - nd isochron age for gabbro dikes from : luobusha , angren and xiubugabu in yarlung zangpo ophilite zone are 177ma , 166ma and 173ma respectively . the 4lar - 39ar step heating spectra of rikangba ophiolite suggest that its formation age is also isoma . it indicates that there was a stronger regionally inagmatism during middle - early jurassic , and the time of i75ma was the main period of the magmatic event of yarlung zangpo ophilite
对邬郁盆地嘎扎村组火山岩剖面的年代学研究表明，该区后碰撞期火山岩的~ ( 40 ) ar - ~ ( 39 ) ar年龄为12 ? 14ma ，侵入其中的花岗岩脉的~ ( 40 ) ar - ~ ( 39 ) ar年龄为10 . 84ma ，与冈底斯西段前人研究资料对比，认为冈底斯带后碰撞火山岩时代有自西向东逐渐年轻的趋势。