subsidence crater
11Nevada Test Site — Infobox Military Test Site name= Nevada Test Site caption= November 1951 nuclear test at Nevada Test Site. Test is shot Dog from Operation Buster, with a yield of 21 kilotons. It was the first U.S. nuclear field exercise conducted on land; troops …
12Amchitka — Infobox Military Test Site name=Amchitka Underground Test Site caption=Cannikin warhead being lowered into test shaft map caption=Location of the site type=Nuclear testing range coordinates= coord|51|28|N|179|05|E nearest town= operator= United… …
13Géologie de Mercure — Une parcelle noire inexpliquée, à la surface de Mercure. La surface de Mercure est dominée par des cratères d impacts, et des plaines de laves similaires, en certains points, aux maria lunaires. Les autres caractéristiques notables de la surface… …
14Nuclear testing — Nuclear weapons tests are experiments carried out to determine the effectiveness, yield and explosive capability of nuclear weapons. Throughout the twentieth century, most nations that have developed nuclear weapons have tested them. Testing… …
15Outline of geography — See also: Index of geography articles The following outline is provided as an overview of and topical guide to geography: Geography – science that studies the lands, features, inhabitants, and phenomena of Earth.[1] The physical world …
16Nuclear bunker buster — Subsidence craters left over after underground nuclear (test) explosions Bunker busting nuclear weapons, also known as earth penetrating weapons (EPW), are a type of nuclear weapon designed to penetrate into soil, rock, or concrete to deliver a… …
17Mount Mazama — collapsed a large caldera, which was later filled with Crater Lake. Elevation 8,159 ft …
18Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
19Geology of the North Sea — Contents 1 Tectonic structure 2 Precambrian 3 Finnmarkian, Athollian, Caledonian Orogenies …
20Lake — For other uses, see Lake (disambiguation). Oeschinen Lake in the Swiss Alps A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the… …
