江西武功山岩浆核杂岩基本特征

江西武功山地区发育的穹窿状地质体,其组成结构和成因机制与经典的变质核杂岩似乎有相似之处,也由内核和外壳组成,并具三层式结构特征,但其内核主要为花岗岩,核内和核外的地层几乎同时代,并无"古老变质核",它的形成机制主要是岩浆底辟强力侵位引起地壳局部隆升和伸展滑覆。所以,将其改称为"武功山岩浆核杂岩"更为贴切。文章主要从武功山穹窿状地质的组成和形成时代及成因机制等方面,阐述了它的基本特征,论证了将其改称为"岩浆核杂岩"的理由,并探讨了滑覆构造的找矿意义。

Basic Characteristics of the Magma Core Complex at Wugongshan, Jiangxi

he dome-shaped geological body developed at Wugongshan Jiangxi province, whose composition and genetic mechanism seem to have similarities with classic metamorphic core complexes, which also comprised of the kernel and shell with the characteristics of three-tier structure. However, its core is mainly granite, stratum of nuclear and nuclear are almost contemporaries, there is no "ancient metamorphic core, its formation mechanism is mainly caused by magma diapir strong emplacement local crustal uplift and stretch slip cover. So, to be renamed " the magma core complex at Wugongshan " is more appropriate. The composition, formation age and genetic mechanism of dome-shaped geology at Wugongshan represent its basic characteristics, demonstrate the reason why renamed the "the magma core complex", and discusses the prospecting significance of decollement.