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公园始建于2006年9月,地跨北京市房山区、河北省保定市涞水县和涞源县,面积953.95㎞2,由周口店、石花洞、十渡、百花山—白草畔、上方山—云居寺、圣莲山和野三坡、白石山八大园区组成,是全球首都城市第一家世界地质公园。
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园区位于河北省涞水县西北部,与北京市房山区接壤,处京西南黄金旅游线上,地理位置十分优越,交通便利。公园总面积334.8平方公里,其中含百里峡构造–冲蚀嶂谷景区、龙门天关花岗岩断裂构造峡谷景区、佛洞塔–鱼谷洞构造岩溶洞泉景区等三个主景区。
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鱼谷洞

鱼谷洞全长约200米,平均宽10米,高0.5~20米,为一幽深莫测的洞穴,曲经通幽,时宽时窄、时高时低,变幻多端。洞的深处有一泓泉水,走进洞中,给人一种神秘、探险之感。洞内外岩层为晚寒武世(距今5亿年~4.9亿年)的竹叶状灰岩、泥质条带灰岩。鱼谷洞的形成受北东及近东西向的裂隙、断层和节理的控制。

Yugu cave
This cave is about 200m long, 10m wide in average and 0.5~20 high. This cave is zigzag and frequently varies in width and height. The cave end is a pool of clean spring. The cave is developed in the Upper Cambrian edgewise limestone and mud-banded limestone (about 500~490Ma ago). The development of the cave is jointly controlled by fractures, faults and joints.

石笋、钟乳石

在鱼谷洞中见到石笋、石钟乳,虽然不多,但也各具风姿,最大的石笋高2m,直径为70㎝,有的略黄,有的晶莹,有的剔透,洞顶滴水不断,并有钙华沉积。

石笋、石钟乳的成因,在洞穴环境下,饱含碳酸的地下水,在碳酸盐岩中渗透、流动,由于温度和气压条件的变化,使溶解转化为沉积,产生了各种类型和形态的洞穴沉积物。鱼谷洞中石笋、石钟乳的形成时期为233百万年(新近系)以来形成的。

Stalagmite and stalactite

There are some of stalagmites and stalactites of different shapes in the Yugu cave. The largest stalagmite is about 2m in height and 0.7m in diameter. There are also some tufa deposits. The stalagmite and stalactite were formed from the deposition of carbonates by underground water dissolution under the condition of certain temperature and pressure.

These stalagmites and stalactites in the cave were formed since the Neogene (about 2.33Ma ago).

 
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