豫北卫辉地区寒武系馒头组含铁鲕粒的特征及形成机制*
许旰潇1, 齐永安1,2, 何雯逸1, 杜耀刚1, 刘小梅1

Characteristics and formation mechanism of iron-bearing ooids of the Cambrian Mantou Formation in Weihui area,northern Henan Province
XU Ganxiao1, QI Yong'an1,2, HE Wenyi1, DU Yaogang1, LIU Xiaomei1
豫北卫辉地区馒头组含铁鲕粒灰岩微量元素蛛网图