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在桂林南郊约九公里、唐家湾公路以北约300米处的中泥盆统东岗岭组下部有一个碳酸盐岩隆,其两侧岩层产状相反,上面被一水平岩层覆盖。过去都认为其下部为一个小型背斜构造,其上部的水平岩层是逆掩断层造成的。 1980年底,笔者在该岩隆中发现了大量造礁生物,含量多达60—80％。1981年以来我们对该地碳酸盐岩进行了详细的野外工作和室内研究。除了在岩隆顶部上覆岩层中见到一组垂直层面的破劈理外,没有发现明显的断裂构造现象;岩隆两侧岩层产状的不同实系礁体两翼的原始倾伏;在岩隆内部找到了几个斑礁块体及造礁生物原地生长的痕迹和生物包裹
There is a carbonate rock in the lower part of the Middle Devonian Donggangling Formation about nine kilometers south of Guilin and about 300 meters north of the Tangjiawan Highway. The rock formations on both sides are opposite in shape and are covered by a horizontal rock formation. In the past, the lower part of the structure was considered to be a small anticline structure, and the upper horizontal rock formation was caused by overthrusting the fault. By the end of 1980, the author found a large number of reef creatures in the Iroquois, up to 60-80%. Since 1981, we have conducted detailed fieldwork and in-house research on the carbonate rocks in this area. No obvious fault structure was found except for a group of vertical fractures found in the overlying strata at the top of the rocky ridge. Long inside to find a few spot reef block and reef creatures in situ growth traces and biological package