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Formed where a stream undergoes an abrupt reduction of slope
Corresponds to the level of the surrounding floodplain.
Composed of sand and built by wave action.
Usually sea level sometimes locally the level of a lake or resistant formation.
Situated below the A-horizon and consisting of clays and oxides
Different elevation by a set of normal faults.
Dry soil formed by wind erosion.
Flat laying strata where remnants of a resistant layer protect the softer rocks underneath.
Typically originating in collapse, explosion, or erosion.
Composed of coarse pyroclasts expelled from the vent by escaping gases.
Composed of both cinders and lava flows.
Usually above mean sea level
Aka fjord. A U-shaped profile now occupied by the sea. A long, narrow, steep-walled inlet.
Reduced (organic) form and of biological origin, including coal, oil, natural gas, oil shales, and tar sands.
The heat is thought to result from the contact of groundwater with magma bodies.
Typically with a U-shaped profile.
The size range is from 100 meters to 10,000 kilometers.
Includes pebbles, cobbles and boulders
The distinction between hill and mountain depends on the locality.
Started 10,000 years ago. That's just yesterday in geological terms
It is not a single ridge, but resembles a mountain range and may have a central rift valley.
Also a single prominence forming part of a ridge or mountain range.
Occurs in high enough concentration to make mining economically feasible.
Formed by abrasion of small pebbles and cobbles in a strong current.
Through gaps in the surf zone at intervals along the shoreline.
Often meeting in the middle with stalactites
Covered and uncovered in each tidal cycle.
Interpreted as marking the line along which a plate bends down into a subduction zone.
Which occurs when wind or currents displace the lighter surface water.
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