江西瑞金市丰田坑地区地处闽赣两省交界西侧,位于瑞金市泽覃乡南东方向约5 km处。区内为武夷山南段中低山区,海拔300~900 m。该区处于华夏褶皱系武夷山隆起南段桃溪变质核杂岩体北端边缘部位,是核杂岩与瑞金-洛口大断裂的相切部位。区内发育大面积新元古代楼子坝组(Nhl)浅变质碎屑岩,北部发育中 Fengjin District, Ruijin City, Jiangxi Province is located in the west of the junction of Fujian and Jiangxi provinces, located in the Ruijin City Ze Qin Township about 5 km south-east direction. The area is in the middle and lower mountainous area of ​​Wuyishan, 300 ~ 900 m above sea level. This area is located at the northern margin of the Taoxi metamorphic core complex in the southern part of the Wuyishan uplift of the Huaxia fold system and is the tangential part of the core complex and the Ruijin-Lokou fault. In the area, a large area of ​​Neoproterozoic Louzhiba (Nhl) metamorphic clastic rocks developed in the north