Principle of original horizontal

Movement of salt due to gravity salt structure body

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movement of salt due to gravity salt structure- body of salt that results from halokensis, salt is less dense that rocks so it try’s to push up through rock layer (positive buyoncany), gravity spreading- when salt reaches neutral buoyancy and spreads out detached bulb- stems or walls connecting salt stocks to source salt anticline- upward salt bulge relative to source layer, strata above wraps around structure salt canopy- when salt stocks merge above the source salt diaper- salt structure that pierces bedding in overlying strata salt dome (salt pillow)- upward salt bulge relative to the surface that is symmetric in view salt glacier- salt that flows out over the land salt roller- asymmetric salt dome salt stock- equant salt diaper in plain view salt wall- elongate salt diaper in plain view inversion- inverted salt dome listric fault- steep fault that flattens out with depth rollover fold- strata above listric fault that fold into an arch batholiths- huge block like intrusion dike- sheet intrusion that crosses cuts strata, roughly vertical sill- sheet intrusion that is parallel to earth surface pluton- blob like intrusion
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extrusive rocks- formed from cooled lava, intrusive rocks form beneath the earth’s surface magma- melt phase of igneous rocks partial melting- when country rock melts from heat of magma dike swarms- array of sub parallel dikes occurring over a broad region ring dikes- concentric dikes dipping at a small angle from vertical radial dikes- dikes that run out from a volcano like a wheel migmatite- mixed igneous and metamorphic rock geothermal gradient- change in temperature with depth intrusion foliation- foliation that is parallel to contact, forms from inequant crystals xenoliths- country incorporated into pluton columnar jointing- cooling of intrusion near surface that form joints in a hexagonal pattern ignimbrite- welded tuff pahoehoe flows- lava flows with rope coil surface Aa flow- flow broken block surface Pillow basalt- pillows of basalt form and create and pile of pillows
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