Research Article

Isotopic Age of the Xiong’er Group Volcanic Rocks and Its Geological Significance in Western Henan, China

Figure 1

Distribution map of volcanic rocks in the Xiong’er Group. (after He et al. [1]). WB: Western Block; EB: Eastern Block; TNCO: Trans-North China Orogen; K-Belt: the Khondalite Belt; JL-Belt: the Jiao-Liao Belt; QLS-QL-DB Orogen: Qilianshan-Qinling-Dabie Orogen.