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Central Extremadura岩基构成了占据Iberian海西褶皱带内带深成侵入岩的一个重要线性排列。它包括了13个深成侵入体和很多的小侵入体,而且包括从石英闪长岩到碱长花岗岩的较宽成分范围。各个深度侵入体的构造研究表明它们的内部构造格局可能是相关的。这些深成侵入体的不同构造格局的相互关系和变质沉积围岩的叠加变形的解释,证明这些深成侵入体是在第二变形期(302—320Ma)产生的东西向右旋陆内剪切带内侵位和变形的。一种定性的上升模式为:(1)与东西向、右旋剪切带成45°角方向的张性裂隙发育;(2)花岗岩岩浆沿这些裂隙浸入;(3)早期侵入体右旋方向旋转诱导出反向剪切带(北—南向左旋)和垂直于早期变形的深成侵入体主轴的横向缩短。以及晚期深成侵入体的强力侵位。
The Central Extremadura rock formation constitutes an important linear arrangement that holds deep intrusive rocks in the Iberian Hercynian folds. It includes 13 deep intrusions and many small intrusions, and includes a wider range of compositions from quartz diorite to alkali-rich granite. Structural studies of various deep intrusions suggest that their internal tectonic pattern may be correlated. The correlation between the different tectonic patterns of these deep-penetrated intrusions and the superimposed deformation of the metamorphosed sedimentary rocks demonstrate that these deep-penetrated intrusions were dextral intracontinental shear during the second deformation (302-320 Ma) Invaded and deformed band. A qualitative ascending pattern is: (1) the development of zonal fractures at an angle of 45 ° to the east-west and right-handed shear zones; (2) the infiltration of granitic magmas along these fractures; (3) the early intrusions in the dextral direction Rotation induces a lateral shortening of the reverse shear band (north-south-left-rotation) and the major axis of the deep invasion body perpendicular to the early deformation. As well as the invasion of the deep deep into the invasion of strong body.