橄长岩
- 网络troctolite;VTT;Troctlite;allivalite
橄长岩-
上岩带橄长岩中的橄榄石颗粒相当短粗。
The olivine grains in the troctolite of the Upper Zone are rather short and thick .
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原始富镁基性岩浆结晶演化序列是：辉橄岩→橄辉岩→橄长岩→辉长岩→富斜辉长岩。
The more complete crystallization evolution sequence of primary magnesian basic magma is : harzburgite → olivine pyroxenite → trocto → lite → gabbro → plagioclass - rich gabbro .