| 词条 | Onyx Cave (Arizona) |
| 释义 |
| name = Onyx Cave | other_name = | photo = | photo_width = | photo_caption = | map = USA Arizona | map_width = | map_caption = | map_alt = | location = Santa Rita Mountains, Santa Cruz County, Arizona | coords = {{coord|31|43|3|N|110|46|9|W|format=dms|display=inline,title}} | coords_ref = | land_registry_number = | grid_ref_UK = | grid_ref_Ireland = | grid_ref = | depth = | length = {{convert|0.5|mi|km|0}} | height_variation = | elevation = | discovery = | geology = Permian limestone | entrance_count = 1 | entrance_list = | difficulty = | hazards = | access = Gated | show_cave = | show_cave_length = | lighting = | visitors = | features = | survey = | survey_format = | website = }}Onyx Cave is a solutional cave system with about {{convert|0.5|mi|km|1}} of passages formed in Permian limestone in the Santa Rita Mountains of Arizona.[1] It is part of the Coronado National Forest.[2] It was designated a National Natural Landmark in 1974.[3] HistoryThe cave became a favorite spot to explore in the 1940s and 1950s. Vandals broke the formations and used paint on many walls to the point that the entrance was gated in 1962 in order to preserve it. Shortly afterwards the entrance was dynamited but was gated once again in 1974. Today access is controlled by Escabrosa Grotto, Inc.[4] See also
References1. ^{{cite web|last=Brod|first=Langford|title=Geology of Select Areas, Sawnill Canyon Fault Zone North East Santa Cruz County, Arizona|url=http://repository.azgs.az.gov/sites/default/files/dlio/files/2010/u15/CR-10-A_Sawmill_Cyn_TEXT.pdf|publisher=Arizina Geological Survey|accessdate=13 May 2014|page=46|year=2005}} 2. ^{{cite web|url=http://www.fs.fed.us/r3/coronado/forest/recreation/caves/onyx.shtml|title=Coronado National Forest|website=Fs.fed.us|accessdate=29 March 2019}} 3. ^{{cite web|title=National Natural Landmark|url=http://www.nature.nps.gov/nnl/site.cfm?Site=ONCA-AZ|publisher=National Park Service|accessdate=11 December 2012}} 4. ^{{cite web|last=Johnson|first=T|title=Santa Rita Caves|url=http://www.gvrhc.org/Library/SantaRitaCaves.pdf|publisher=Green Valley Hiking Club|accessdate=11 December 2012}} External links
3 : Caves of Arizona|Landforms of Santa Cruz County, Arizona|National Natural Landmarks in Arizona |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。