斜长岩
3.An igneous rock composed chiefly of plagioclase and orthoclase, with small amounts of other minerals.
4.Any of a common rock-forming series of triclinic feldspars, consisting of mixtures of sodium and calcium aluminum silicates.
5.A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene.
6.(3)Late Paleozoic ophiolites have beenconfirmed to exist in the South Tianshan Mountains according to the age of fossil radiolariansin chens of ophiolitic melanges and the single-mineral 40Ar/39Ar high-temperature plateauage of 333. 51±8. 77 Ma of plagioclae from gabbros.
7.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.
8.The characteristics and distributing features of the amphibolites from Archaean era are discussed in this paper.
9.Sm-Nd AND Ar-Ar DATING OF THE Pl-AMPHIBOLITE, JINSHAN GROUP, SHANGHAI REGION
10.Geochemistry of Early Archaean Glagio Amphibolites in Chaozhuang Group from Eastern Hebei Province
