½À°î°ú ÆÇ»óÀý¸®°¡ ÀÖ´Â Â÷źõ »ó·ù¿¡ ÁÖ»óÀý¸®colmnar joint°¡ ÀÖ´Ù. Â÷źõÀº ÇÑź°ÀÇ Áö·ù´Ù.
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ÇÑź°ÀÇ Áö·ùÀÎ Â÷źõÀÌ È帣´Â °÷¿¡ ÁÖ»óÀý¸®°¡ ¹ß´ÞÇÏ¿© »ý±ä Àýº®ÀÌ´Ù. Àýº® Ç¥¸éÀÌ 4~6°¢ÇüÀÇ ÁÖ»óÀý¸®°¡ ¶³¾îÁ® ³ª°£ ÀÚ±¹ ¶§¹®¿¡ »óÇÏ·Î °¥¶óÁø ÁÖ¸§Ä¡¸¶¿Í °°ÀÌ º¸À̸ç, ±× ¿õÀåÇÔÀº º¸´Â À̵éÀ» ¾ÐµµÇÑ´Ù.
It is a cliff formed by the development of colmnar joint at the Chatan stream, the main stream of the Hantan River. The cliff surface looks like a wrinkled skirt that is split up and down because of the cut off 4~6 hexagonal columnar joints, and its magnificence overwhelms the viewers.
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Columnar joints are vertical joints formed by the contraction of lava. In other words, when the liquid lava cools down gradually, it becomes a solid rock, and as a result, the volume of the lava begins to decrease, and geometrically pulling forces are generated in all directions.
Áï, ºÎÇÇ°¡ ÁÙ¾îµé¸é¼ Æ´ÀÌ ¹ú¾îÁ® ¿ë¾Ï ³»ºÎ¿¡ µ¶Æ¯ÇÑ Àý¸®(°¥¶óÁö´Â) Çö»óÀÌ ³ªÅ¸³ª´Â °ÍÀÌ´Ù. ¼öÃàÀ¸·Î ÀÎÇÑ Æ´Àº ¿ë¾Ï ³»ºÎ µµÃ³¿¡¼ ¹ß´ÞÇÏ°Ô µÇ¾î ³Ã°¢¸é°ú Á÷±³ÇÏ´Â ¹æÇâÀ¸·Î 5°¢ÇüÀ̳ª 6°¢ÇüÀÇ ´Ù°¢Çü ¿ë¾Ï ±âµÕµéÀÌ ¸¸µé¾îÁø´Ù.
In other words, as the volume decreases, a gap opens and a unique jointing phenomenon occurs inside the lava. The gap due to contraction develops all over the interior of the lava, resulting in polygonal lava columns of five or six sides in the direction orthogonal to the cooling surface.
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