Isotopic age of shijuli gabbro in north qilian mountain and its geological significance 北祁连山石居里辉长岩的同位素年龄及其地质意义
Petrological characteristics and tectonic implications of the tahe gabbro in the northern part of the great xing ' an range 大兴安岭北段塔河辉长岩的岩石学特征及其构造意义
The discovery of traces of early oxygen was made in a study of a 3 , 000 - foot - long rock core extracted in western australia 在对采掘于澳洲西部的3000英尺长岩芯的研究中，发现少量的早期氧气。
These rocks were created early in lunar history , when the outer portion of the moon was completely molten ; the low - density anorthosite floated to the surface of the magma ocean 这些岩石在月球历史的早期形成，当时月球外部完全呈熔融状态，低密度的斜长岩会浮到岩浆海的表面。
Furthermore , the lunar orbiters confirmed that the highlands of the moon are dominated by anorthosite , an igneous rock composed primarily of the mineral feldspar and rich in calcium and aluminum 此外，两艘月球轨道船证实了月球高地主要由斜长岩（一种主要由长石形成的火成岩，富含钙和铝）构成。
All these ductile shear zones are characterized by northward thrusting . the u - pb dating on zircons from the bedded gabbro of the qimanyuter ophiolite melange gives an age of 526 ? 1 ma ( early cambrian ) 在其曼于特蛇绿岩的层状细粒辉长岩中获得了锆石u - pb年龄值为526 1ma (早寒武世) ，它被晚奥陶世花岗岩侵入。
