豫北卫辉地区寒武系馒头组含铁鲕粒的特征及形成机制<sup>*</sup>

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'an^1,², HE Wenyi¹, DU Yaogang¹, LIU Xiaomei¹

豫北卫辉地区馒头组含铁鲕粒灰岩稀土元素标准化图