Structural Geology And Tectonics
39 entries in the Structural Geology And Tectonics compendium.
TectoniteRocks whose fabric records deformation history through mineral orientation.Telluric ironRare terrestrial metallic iron found in Greenland.Terra Australis OrogenA vast Paleozoic accretionary orogen along southern Gondwana.Tethys OceanPrehistoric ocean that fragmented into the Indian Ocean and Mediterranean.Accretionary wedgeAccretionary wedges form from sediments scraped off subducting plates.African plateMajor tectonic plate comprising most of Africa and adjacent oceanic crust.Amur plateMinor tectonic plate in northern and eastern hemispheres.Antarctic plateFifth-largest tectonic plate, moving Antarctica southward.AnticlineArch-like fold with oldest rocks at core, key for oil traps.Arabian plateMinor tectonic plate colliding with Eurasia, forming major mountain ranges.AsthenosphereDuctile upper mantle layer enabling plate tectonics.Back-arc basinSubmarine basins formed by extension behind volcanic arcs.Basement (geology)Crystalline foundation of continents beneath sedimentary cover.BoudinageGeological term for sausage-shaped structures from extension.Brittle–ductile transition zoneZone where brittle crust meets ductile crust.Caribbean plateA mostly oceanic plate underlying Central America and the Caribbean Sea.Cleavage (geology)Planar rock feature from deformation and metamorphism.Cocos plateYoung oceanic plate subducting under Central America.Contact (geology)A boundary separating rock bodies in geology.ContinentLarge terrestrial region identified by convention, not strict criteria.Continental crustContinental crust forms the landmasses and shallow seabeds of Earth.Continental driftTheory of moving continents, rejected then validated.Continental fragmentPieces of continents broken off into distant islands.Continental marginOuter edge of continental crust under coastal waters.Continental riseSediment zone between continental slope and abyssal plain.Convergent boundaryA zone where lithospheric plates collide and subduct.Core–mantle boundaryBoundary between Earth's mantle and liquid outer core.CratonOld, stable continental crust forming Earth's ancient cores.Cratonic sequenceLarge-scale rock sequences recording sea-level cycles on cratons.CrenulationA fabric from superimposed foliations in metamorphic rocks.Depression (geology)A sunken landform formed by various geological mechanisms.Detachment faultA gently dipping normal fault with large displacements in extensional tectonics.DiapirA geological intrusion of mobile material into overlying rock.Divergent boundaryTwo plates move apart, creating new crust.Ductility (Earth science)Rock's ability to deform without fracturing under certain conditions.Eurasian plateTectonic plate covering most of Eurasia and adjacent oceanic crust.Ur (continent)Hypothetical Archean supercontinent, possibly Earth's first continent.VaalbaraHypothetical Archean supercontinent linking South Africa and Australia.Yellowstone hotspotVolcanic hotspot underlying the North American tectonic plate.
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