What does Yao Temple Turtle Back Stone mean?

It is a crack formed by dehydration and contraction of the tuberculosis substance precipitated in the hydrogel-rich sediments, and then it is filled with other minerals. The siderite-like turtle-back stone nodules are common in coal measures strata. This is a rare turtle back stone in the world, located at the seaside of Dalian Jinshitan Park. It is said that there are only two such tortoiseshell stones in the world, and the other one is in Canada, but it is only the size of this one 1/3. At present, there are two explanations for the origin of this strange stone: one is siltstone deposited about 540 million years ago. Under dry and hot weather conditions, it is exposed and cracked, and its cracks are full of green sediments, forming turtle-back-like grid cracks; Another view is that in the semi-plastic state of rock, vertical cracks are generated due to earthquake action, and saturated cement sand flows to the cracks. With the intensification of vibration, the sediment vein grows continuously, which makes the rock layers at both ends bend and fracture, and presents grid cracks similar to dry cracks on the surface.

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Turtle back stone, produced in Jinshitan, Dalian, is named for its cracked reticulate pattern on the rock surface, which looks like turtle back. Turtle back stone is a kind of geological relic, which records important events in geological history. At present, there are two views on the cause of turtle back stone:

One view is that siltstone deposits that are not completely solidified into rocks are exposed to dry and hot climate conditions and lost due to loss.

Liu Xianming, a fine management expert, inspected the turtle back stone in Tian Tong village, Shicheng [1].

The water dried up and cracked, and the cracks were filled with later green sediments, forming a "cracked net pattern" like the turtle's back.

Another view is that in the semi-plastic state, vertical cracks are caused by earthquakes, and the cracks are filled with water-filled sediment flow. With the intensification of vibration, more and more sediment is filled, which makes the rock layers at both ends bend and the surface presents a "cracked net pattern".