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新法曾达和塞拉达岩基以及托里塔马侵入体在巴西东北博尔博雷马省的东部形成了一个巨大的花岗岩地块。NE—SW走向的新法曾达左旋平移剪切带(FNSZ)切割了3个花岗岩体之间的接触带,3个岩体的内部及靠近它们附近的岩石发生了变形。塞拉达Japeganga的南边是右旋东西向的东伯南布哥剪切带(EPESZ)。新法曾达的塞拉达Japeganga杂岩向上长英质单元组分逐渐增多,杂岩的内部构造反映了岩浆房中垂向上呈展状的原始岩层。局部强烈不协调的接触关系,围岩中普遍缺失与剪切有关的变形,以及在远离FNSZ和EPESZ处侵入体的内部岩浆组构不受剪切带控制,这些特征表明岩浆侵位先于剪切带的活动。但是,岩浆的结晶与剪切带的活动同时,这可以从在靠近剪切带处岩浆叶理发生旋转以及岩浆逐渐过渡到固态变形组构中看出来。在侵入体结晶期间或之后,剪切带控制了后续岩浆囊的上升和侵位,然后在FNSZ和EPESZ中形成了岩脉群。岩脉中的镁铁质岩脉占主导,表明在剪切带的活动期间,剪切带向下延伸到了上地幔。以前的观点认为,断层带控制着侵入体的上升和就位方式。但是,本文报道了一个用于解释花岗岩与走滑断层普遍共生的新观点。博尔博雷马省的几个陆内剪切带的成核作用是由于与先存岩浆房伴生的热异常的结果。不完全结晶的岩浆体造成了地壳流变的明显不均一性,这可能引发了应变局部化和剪切带的成核作用。
Neo-Fassa and the Serrati and Toritama invaders formed a huge granite block east of Bore Borrema in northeastern Brazil. The NE-SW strike of the new Fa-Zeng-L-Z-FNSZ cut the contact zone between the three granite bodies, and the deformations occurred in the interior of the three rock masses and the rocks near them. To the south of the Japeganga in Serrada is the northeast-east Pernambuco shear band (EPESZ). The uplifted quartz unit composition of the Japeganga complex in the Serrata, which had been reached by the new method, is gradually increasing. The internal structure of the complex reflects the vertically pristine strata in the magma chamber. The locally strong and uncoordinated contact relationship, the general absence of shear-related deformation in the surrounding rock, and the internal magmatism of intrusions away from the FNSZ and EPESZ are unaffected by the shear zones, indicate that the magma emplacement precedes the shear Cut the band activities. However, as the magma crystallizes in conjunction with the shear zone activity, this can be seen from the rotation of the magma foliage near the shear zone and the gradual transition of the magma to the solid state structure. The shear zone controls the uplifting and emplacement of subsequent magma pockets during or after the invader crystallisation and then forms dikes within the FNSZ and EPESZ. The mafic dikes in the dike dominates, indicating that the shear zone extends down to the upper mantle during shear zone activity. In the previous view, the fault zone controlled the ascending and seating of intrusions. However, this paper reports a new idea that explains the general symbiosis between granites and strike-slip faults. The nucleation of several intra-continental shear zones in the province of Bornborer is due to thermal anomalies associated with preexisting magmatic chambers. Incompletely crystalline magmas cause significant heterogeneity in the crustal rheology, which may trigger strain localization and shear band nucleation.