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地球上有各种各样的,令人感到妙趣横生的天生桥。譬如按组成桥的物质不同可划分为:木质天生桥、黄土天生桥、石质天生桥等等;按成因可以分为:岩溶天生桥、海蚀天生桥、风蚀天生桥、冰蚀天生桥、倒木天生桥、倒石天生桥、冲蚀天生桥等。笔者见到一座奇特罕见的“天生桥”。1984年5月,我们在漂水地区进行地质考察期间,慕名到溧水县城西约3.5公里的古胭脂河上去参观“天生桥”。汽车开到胭脂河边停下后,我在“天生桥”上走来走去,感到非常有趣。桥面是天然的砾岩层组成。桥面处处可见到滚圆的石头。砾岩层的产状十分平缓,仅几度或十几度。砾石呈白至灰白色,成分主要是石灰岩等碳酸盐岩。偶尔可见到硅质岩及火山岩砾石等。地表砾石一般滚圆度好,大小不等,多为直径2至10厘米左
There are a variety of interesting bridges on Earth. For example, according to the material composition of the bridge can be divided into: natural bridge, loess born Bridge, stone bridge born etc; According to the causes can be divided into: Karst Tianshengqiao, sea born Tianshengqiao, wind erosion Tianshengqiao, Bingcheng Tianshengqiao, inverted wood Tianshengqiao, inverted stone Tianshengqiao Tianshengqiao etc. I see a peculiar rare “Tianshengqiao ”. In May 1984, during a geological survey in the flooding area, we visited the “Tianshengqiao” about 3.5 km west of the ancient rouge river in the west of Lishui County. After the car stopped at the rouge river, I was walking around “Tianshengqiao” and was very amused. The deck is composed of natural conglomerate layers. The bridge surface can be seen round stone. Conglomerate formation is very gentle, only a few degrees or more than ten degrees. Gravel is white to gray, the main component of carbonate rocks such as limestone. Occasionally visible chert and volcanic rock gravel. Surface gravel generally round good, ranging in size, mostly 2 to 10 cm in diameter left