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 Classification : Nationally Designated Cultural Assets
Designation Number : Natural Product #413
Location : san3-im, Mungok1-ri, Buk-myeon
Designated Date : 2000. 3. 16
Sun cracks and stromatolites are rockwall layers next to Yeondeokcheon of 205,091§³ located on the fork road toward Yeondeok-ri and Oman-dong at Mungok Elementary School.
It's formed on the layer of the lower part of Palaeozoic strata formed about 4~5 hundred million years ago in Ordovician Period. Sun cracks are formed when sediment on the bottom of shallow water comes out to water surface and dries. Sediment contracts and cracks. When these cracks harden, they are called sun cracks. It proves that this area once was under the water. Stromatolites are the sediment of the blue-green algae, a single cell, that was one of the first creatures in the world. In other words it's the fossil of minute bacteria. It's a rare geological data in Korea. It's rarely found in sedimentary rock formed in Precambrian Eon(about 7~10 hundred million years ago) and Cretaceous Period of Mesozoic Era. Presently, it forming in some parts of the world, especially in the western Australia and Shark Bay. Sun cracks and stromatolites of Mungok-ri has high academic values to be preserved because it show sedemental environment of the time very well.
[References]
Cultural Assets Department, 2000, |
