(EN) The Reed Flute Cave is a landmark and tourist attraction in Guilin, Guangxi, China. It is a natural limestone cave with multicolored lighting and has been one of Guilin’s most interesting attractions for over 1200 years. It is over 180 million years old. It offers magnificent rock and mineral formations, stone pillars, and carbon deposits. Illuminated by different colored lights.The cave got its name from the type of reed growing outside, which can be made into flutes. Reed Flute Cave is filled with a large number of stalactites, stalagmites and other rock formations. Inside, there are more than 70 inscriptions written in ink, which can be dated back as far as 792 AD in the Tang Dynasty. These aged inscriptions tell us that it has been an attraction in Guilin since ancient times. It was rediscovered in the 1940s by a group of refugees fleeing the Japanese troops. Nowadays, multicolored lighting artificially illuminates the cave. Limestone or calcium carbonate is a sedimentary rock, organogenic dominant, white, gray or yellow. The rock is composed mainly of calcite and aragonite minerals both chemical formula (CaCO3). Generally limestone is formed from biogenic sediments, but may have a genesis of chemical reactions or processes forming clusters. Limestones have a significant economic importance, being used as a raw material in the construction industry, are natural reservoirs for storage of petroleum, natural gas, or rock in karst processes that occur with the formation of caves which are places of tourist attraction. These calcareous rocks passing through the calcium carbonate and enriched with them, reach the surface they percipate from the salt solution in stratisfied or fine needle shaped crystals forms. Based on the Mohs hardness scale hardness of 3.4 to 4, it can be easily grinded stone. The rich color scale is given by iron oxides, sulfides, the presence of sulfur and various clay minerals. Schist is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel). It is defined by having more than 50% platy and elongated minerals, often finely interleaved with quartz and feldspar. Travertine is a form of limestone deposited by mineral springs, especially hot springs. Travertine often has a fibrous or concentric appearance and exists in white, tan, cream-colored, and even rusty varieties. It is formed by a process of rapid precipitation of calcium carbonate, often at the mouth of a hot spring or in a limestone cave.
To claim this earthcache please send me via profile e-mail the answer to the following questions:
1) What can form stalactites, stalagmites, and other speleothems?
2) How is formed the cave?
3) Why the limestone schists are colored?
Uploaded photos with you and/or your GPS in the cave are welcome!
Visiting schedule:
Monday- Sunday from 8:30 to 17:30. Except Saturday. Saturday is closed.
Contact Person: +86 773 269 5075
(CN) 里德长笛洞是一个地标和旅游胜地在桂林，广西，中国。它是一个自然的石灰岩洞与多彩多姿的照明，并且是桂林的最有趣的吸引力之一1200多年来。它是超过1.8亿岁。它提供壮观的岩石和矿物地层，石柱和碳沉积物。照亮由不同的色的光。洞从它生长在外面的芦苇的类型得到它的名字，可以被做成长笛。里德长笛洞充满了大量的钟乳石，石笋和其他岩层。里面，有70多个铭文用墨水写的，可追溯到公元792年唐代。这些古老的铭文告诉我们，这是自古以来在桂林的一个吸引力。在1940年代，一群逃离日本军队的难民重新发现了。如今，多彩照明人工照亮洞穴。石灰石或碳酸钙是沉积岩，有机发生显性，白色，灰色或黄色。岩石主要由方解石和文石矿物化学式（CaCO3）组成。通常，石灰石由生物沉积物形成，但可能具有化学反应或形成簇的过程的起源。石灰石具有重大的经济重要性，被用作建筑工业中的原材料，是用于储存石油，天然气或岩石的天然储层，其在形成作为旅游胜地的洞穴的岩溶过程中储存。这些通过碳酸钙并且富集它们的钙质岩到达它们以不满意或细针状晶体形式从盐溶液中渗出的表面。基于莫氏硬度计的硬度为3.4〜4，可以方便地研磨石材。丰富的色标是由铁的氧化物，硫化物，硫和各种粘土矿物的存在。 Schist是一种中等变质岩，中等到大，平坦，片状颗粒处于优选取向（附近的颗粒大致平行）。它被定义为具有超过50％的片状和伸长的矿物，通常与石英和长石精细地交织。石灰华是由矿泉，特别是温泉沉积的石灰石的一种形式。石灰华通常具有纤维或同心的外观，并且存在白色，棕褐色，奶油色，甚至生锈的品种。它通过碳酸钙的快速沉淀的方法形成，通常在温泉的口或在石灰石洞中.
要声明这个地球缓存，请通过个人资料电子邮件向我发送以下问题的答案：
1) 什么可以形成钟乳石，石笋？
2) 如何形成洞？
3) 为什么石灰岩片岩是彩色的？
上传的照片与您和/或您的GPS在山洞欢迎！
访问时间表：</ b>
周一至周日：8：30至17:30。 星期六除外。 星期六休息。
联系人：+86 773 269 5075