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一、前言广州及其毗邻地区的红色地层分布颇广,除广州市外,其东的东莞、增城;其北的清远、花县;其西的三水、南海;以及其南的顺德、番昌等县境內均有出露(图1)。广州市西
I. INTRODUCTION The distribution of red strata in Guangzhou and adjacent areas is rather wide. Except for Guangzhou City, the east of Dongguan and Zengcheng; its northern Qingyuan and Huaxian; its western Sanshui and Nanhai; and its south Shunde and Fan Chang County, etc. are exposed (Figure 1). Guangzhou City West