CAJ | 학술논문

中国鲁东造山带前寒武纪构造变形可以划分出三个变形旋回与五个变形幕,即吕梁变形旋回第一变形幕,四堡变形旋回第二变形幕,以及晋宁变形旋回第三、四、五变形幕。前三幕表现为强塑性流动变形作用,而第四、五幕则分别属于较强塑性及中强塑性变形作用,这五个变形幕总的均以塑性变形作用为突出特征,说明它们的变形环境之间虽有变化,但不明显,只是变形机制和应力场型式有一定变化。第一变形幕导致麻粒岩相区域变质作用,并且产生区内最早的变形叶理,为尔后的构造变形奠定了基础。第二、三变形幕体现了碰撞带形成机制及过程,与超高压-高压变质杂岩、中酸性侵入杂岩及角闪岩相区域变质作用等关系密切,因此在区内前寒武纪地质演化中居于主导地位。第四、五变形幕反映碰撞带形成之后演化特征,控制了现今区域大地构造构格的形成。
중국로동조산대전한무기구조변형가이화분출삼개변형선회여오개변형막,즉려량변형선회제일변형막,사보변형선회제이변형막,이급진저변형선회제삼、사、오변형막。전삼막표현위강소성류동변형작용,이제사、오막칙분별속우교강소성급중강소성변형작용,저오개변형막총적균이소성변형작용위돌출특정,설명타문적변형배경지간수유변화,단불명현,지시변형궤제화응력장형식유일정변화。제일변형막도치마립암상구역변질작용,병차산생구내최조적변형협리,위이후적구조변형전정료기출。제이、삼변형막체현료팽당대형성궤제급과정,여초고압-고압변질잡암、중산성침입잡암급각섬암상구역변질작용등관계밀절,인차재구내전한무기지질연화중거우주도지위。제사、오변형막반영팽당대형성지후연화특정,공제료현금구역대지구조구격적형성。
Presents the Precambrian tectonic deformation in Chinaese Ludong orogenic belt divided into five episodes three cycles the first epoisode of Luliang cycle the second episode of Sipu cyclecoeval to the formation of eclogites the thirdcoeval to the formation of intermediate acidic intrusive complexes the fourth and fifth episodes of Jinning cycle. Intensive ductile flow deformation the first three episodes. Rather strong and medium strong ductile deformation happened in the last two episodes and concludes the deformation environment of the five episodes changed in some degree but not radically in other words the change only occurred as a certain degree of variation of deformation style and the attitude of stress field Granulite facies regional metamorphism happened in the first deformation episode to the formation of the earliest foliation providing the basis for further deformations in the studying area Deformation in the second and third episodes reflected the forming mechanism and process of the collisional zone closely related to the fromation of eclogites and intermediate acidic intrusive complexes and regional amphibolite facies metamorphism the second and third episodes were therefore dominant in Precambrian deformation in the region and the fourth and fifth episodes were post-collision and control the formation of present tectonic framework.