CAJ | 학술논문

新甫山、上港岩体分布于鲁西新太古代早期泰山岩群和英云闪长质片麻岩、条带状英云闪长质片麻岩组成的古陆核的东北部。主要岩性为片麻状花岗闪长岩及片麻状奥长花岗岩。根据新的锆石SHRIMPU—Pb定年结果，片麻状花岗闪长岩形成年龄为（2613±12）Ma，片麻状奥长花岗岩形成年龄为（26234±9）Ma，为新太古代中期形成。在泰山桃花峪一下港之间出露的条带状英云闪长质片麻岩中奥长花岗质脉体锆石U—Pb年龄在2660～2600Ma。该期岩体是新太古代早期英云闪长质片麻岩发生变质作用与重熔岩浆作用的产物。
신보산、상항암체분포우로서신태고대조기태산암군화영운섬장질편마암、조대상영운섬장질편마암조성적고륙핵적동북부。주요암성위편마상화강섬장암급편마상오장화강암。근거신적고석SHRIMPU—Pb정년결과，편마상화강섬장암형성년령위（2613±12）Ma，편마상오장화강암형성년령위（26234±9）Ma，위신태고대중기형성。재태산도화욕일하항지간출로적조대상영운섬장질편마암중오장화강질맥체고석U—Pb년령재2660～2600Ma。해기암체시신태고대조기영운섬장질편마암발생변질작용여중용암장작용적산물。
Xinfushan and Shanggang rock distributed in early Archean Taishan group and northeastern part of the ancient continental nucleus which were composed of tonalitic gneiss and banded tonalite gneiss. Its main rock properties are gneissic granodiorite and gneissic trondhjemite. According to new zircon SHRIMP U - Pb dating, the forming age of gneissic granodiorite was （2613±12）Ma, and the forming age of gneissic trondhjemite was （2 623±9） Ma. They were formed in mid Neoarchean. Zircon U - Pb age of trondhje-mite veins in banded tonalite- diorite gneiss which were exposed between Taohuayu in Taishan mountain and Xiagang was 660-2600Ma. These rocks were the production of metamorphism and remelting magmatism in the new early Archean tonalitic gneiss.