Concepts of metamorphism, metamorphic reaction, prograde and retro – metamorphisms.

变质岩一般概念、变质反应、进变质和退变质。

It has a prismatic and splintery texture and is abundant in regionally metamorphosed (see metamorphism) rocks such as schists.

具有棱柱形和易碎裂结构，区域性变质岩（参阅metamorphism）中非常丰，如片岩。

The khondalite lithology is composed of a suit of metamorphic aluminium-sedimentary rock.During the Jinning movement, the sedmentary rock experienced four stages of metamorphism.

明确黄陵地区孔兹岩系为一套变质质沉岩组，宁期造山运动期间该套岩系经历四期变质作用。

Its original rock is sedimented in the environment of active epicontinent-seaboard with basic volcanism, and become khondalite series through the Archean regional high-amphibolite facies metamorphism.

原岩形成于具有基性火山作用活动大陆边缘滨海-浅海环境。经过太古宙区域高角闪岩相变质作用，形成孔兹岩系。

The calcite deposits are derived from the recrystallization of the carbonatite as a result of the weathering, eluviation of the fault, and the thermal contact activity and the metamorphism.

即白色、块大、致密。

The former three stages reflect the major process of eclogite facies metamorphism and the latest stages the light overprinting of greenschist facies retrometamorphism at the shallow level of crust.

前三个阶段反映了榴辉岩相变质作用主要过程。后一阶段，反映了榴辉岩地壳浅部层次绿片岩相环境下遭受轻微叠加改造。

Xiaertai rock group,a set of metamorphic rock system in Xiaertai area,has experienced strong ductilebrittle deformation and then thermal contact metamorphism and dynamometamorphism in the late stage.

盘岭岩组，黄顶子岩组及烧锅屯岩组，其原岩建造分别为火山岩建造、碳酸盐岩建造及碎屑岩建造。