planar deformation
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Planar deformation features — Planar deformation features, or PDFs, are optically recognizable microscopic features in grains of silicate minerals (usually quartz or feldspar), consisting of very narrow planes of glassy material arranged in parallel sets that have distinct… … Wikipedia
Deformation (engineering) — This article is about deformation in engineering. For a more rigorous treatment, see Deformation (mechanics). Compressive stress results in deformation which shortens the object but also expands it outwards. In materials science, deformation is a … Wikipedia
Rasgos de Deformación Planar — Rasgo de impacto: Histograma con la orientación de PDFs (Planar Deformation Features) en cuarzos. Los Rasgos de Deformación Planar o PDFs (Planar deformation features) son planos de material vítreo dispuestos de forma paralela dentro de la… … Wikipedia Español
Azuara impact structure — The 35 40 km diameter Azuara impact crater is located in northeast Spain roughly 50 km south of Zaragoza. The name is attributed to the small town of Azuara located near the center of the structure. The first hint to a possible impact origin was… … Wikipedia
Estructura de impacto de Azuara — Saltar a navegación, búsqueda Rasgo de impacto: Brecha polimíctica de metamorfismo de shock del cráter de Azuara … Wikipedia Español
Charlevoix crater — Coordinates: 47°32′N 70°18′W / 47.533°N 70.3°W / 47.533; 70.3 … Wikipedia
Mistastin crater — Mistastin Lake Landsat Image Location Labrador, Newfoundland and Labrador, Canada Coordinates … Wikipedia
Keurusselkä — Infobox lake lake name = Keurusselkä image lake = Keurusselka WorldWind.jpg caption lake = Landsat 7 image of the Keurusselkä region. Area where shatter cones have been found is marked with a red ellipse and the suggested impact structure of… … Wikipedia
Des Plaines crater — The Des Plaines crater or Des Plaines disturbance is recognized as an impact crater in Illinois, United States. It is located beneath the eastern part of the city of Des Plaines, which is a suburb of Chicago.[1][2] It is 5.5 miles (8.9 km)… … Wikipedia
Lonar crater — is an impact crater situated in the Buldhana district of the Indian state of Maharashtra. The crater is 1.83 km (6,000 ft) in diameter and 170 metres in depth, and its age is estimated to be 52,000 ± 6,000 years (Pleistocene). It is the second… … Wikipedia
Cryptoexplosion — The term cryptoexplosion structure (or cryptovolcanic structure) means an explosion of unknown cause. The term is now largely obsolete. It was once commonly used to describe sites where there was geological evidence of a large scale explosion… … Wikipedia
