Data Portal @ linkeddatafragments.org

Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Impact_crater> ?p ?o. }

• Impact_crater abstract "An impact crater is an approximately circular depression in the surface of a planet, moon or other solid body in the Solar System, formed by the hypervelocity impact of a smaller body with the surface. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins. Meteor Crater is perhaps the best-known example of a small impact crater on the Earth.Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Mars, Europa, Io and Titan, visible impact craters are less common because they become eroded, buried or transformed by tectonics over time. Where such processes have destroyed most of the original crater topography, the terms impact structure or astrobleme are more commonly used. In early literature, before the significance of impact cratering was widely recognised, the terms cryptoexplosion or cryptovolcanic structure were often used to describe what are now recognised as impact-related features on Earth.The cratering records of very old surfaces, such as Mercury, the Moon, and the southern highlands of Mars, record a period of intense early bombardment in the inner Solar System around 3.9 billion years ago. Since that time, the rate of crater production on Earth has been considerably lower, but it is appreciable nonetheless; Earth experiences from one to three impacts large enough to produce a 20 km diameter crater about once every million years on average. This indicates that there should be far more relatively young craters on the planet than have been discovered so far. The cratering rate in the inner solar system fluctuates as a consequence of collisions in the asteroid belt that create a family of fragments that are often sent cascading into the inner solar system. Formed in a collision 160 million years ago, the Baptistina family of asteroids is thought to have caused a large spike in the impact rate, perhaps causing the Chicxulub impact that may have triggered the extinction of the dinosaurs 66 million years ago. Note that the rate of impact cratering in the outer Solar System could be different from the inner Solar System.Although the Earth’s active surface processes quickly destroy the impact record, about 170 terrestrial impact craters have been identified. These range in diameter from a few tens of meters up to about 300 km, and they range in age from recent times (e.g. the Sikhote-Alin craters in Russia whose creation were witnessed in 1947) to more than two billion years, though most are less than 500 million years old because geological processes tend to obliterate older craters. They are also selectively found in the stable interior regions of continents. Few undersea craters have been discovered because of the difficulty of surveying the sea floor, the rapid rate of change of the ocean bottom, and the subduction of the ocean floor into the Earth's interior by processes of plate tectonics.Impact craters are not to be confused with landforms that in some cases appear similar, including calderas and ring dikes.".
• Impact_crater thumbnail Tycho_crater_on_the_Moon.jpg?width=300.
• Impact_crater wikiPageExternalLink 0003669.000.html.
• Impact_crater wikiPageExternalLink impact.scaredycatfilms.com.
• Impact_crater wikiPageExternalLink www.krateris.eu.
• Impact_crater wikiPageExternalLink craters.
• Impact_crater wikiPageExternalLink index.html.
• Impact_crater wikiPageExternalLink tercrate.htm.
• Impact_crater wikiPageExternalLink ImpactDatabase.
• Impact_crater wikiPageID "6416".
• Impact_crater wikiPageRevisionID "597960830".
• Impact_crater hasPhotoCollection Impact_crater.
• Impact_crater subject Category:Articles_containing_video_clips.
• Impact_crater subject Category:Depressions_(geology).
• Impact_crater subject Category:Impact_craters.
• Impact_crater subject Category:Impact_geology.
• Impact_crater subject Category:Lunar_science.
• Impact_crater type GeologicalFormation109287968.
• Impact_crater type ImpactCraters.
• Impact_crater type ImpactCratersOnEarth.
• Impact_crater type Object100002684.
• Impact_crater type PhysicalEntity100001930.
• Impact_crater type VolcanicCrater109472413.
• Impact_crater type YagoGeoEntity.
• Impact_crater type YagoPermanentlyLocatedEntity.
• Impact_crater comment "An impact crater is an approximately circular depression in the surface of a planet, moon or other solid body in the Solar System, formed by the hypervelocity impact of a smaller body with the surface. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain.".
• Impact_crater label "Cratera de impacto".
• Impact_crater label "Cratere meteoritico".
• Impact_crater label "Cratère d'impact".
• Impact_crater label "Cráter de impacto".
• Impact_crater label "Einschlagkrater".
• Impact_crater label "Impact crater".
• Impact_crater label "Inslagkrater".
• Impact_crater label "Krater uderzeniowy".
• Impact_crater label "Ударный кратер".
• Impact_crater label "فوهة صدمية".
• Impact_crater label "クレーター".
• Impact_crater label "撞击坑".
• Impact_crater sameAs Impaktní_kráter.
• Impact_crater sameAs Einschlagkrater.
• Impact_crater sameAs Cráter_de_impacto.
• Impact_crater sameAs Talka_krater.
• Impact_crater sameAs Cratère_d'impact.
• Impact_crater sameAs Kawah_tabrakan.
• Impact_crater sameAs Cratere_meteoritico.
• Impact_crater sameAs クレーター.
• Impact_crater sameAs 충돌구.
• Impact_crater sameAs Inslagkrater.
• Impact_crater sameAs Krater_uderzeniowy.
• Impact_crater sameAs Cratera_de_impacto.
• Impact_crater sameAs m.01wr8.
• Impact_crater sameAs Q55818.
• Impact_crater sameAs Q55818.
• Impact_crater sameAs Impact_crater.
• Impact_crater wasDerivedFrom Impact_crater?oldid=597960830.
• Impact_crater depiction Tycho_crater_on_the_Moon.jpg.
• Impact_crater isPrimaryTopicOf Impact_crater.