Test 1 Flashcards
Soils in the SE US with warmth causing increased rate of leeching?
Ultisols
Vertisol characteristic?
Heavy clay
Characteristics of depositional aeolian landscapes?
Found more in humid areas where they are stabalized, or they are on steps, creates fertile land and develops LOESSIAN SOILS.
____ refers to mountain building events
orogeny
immature soil typoe?
entisol
The US has two of these, one where the rockies are, and thre other where the appalachians are.
The orogenic belts
Characteristics of spodsols?
developed under CONIFEROUS VEGETATION
Illuviation of clay in the b horizon is found in this soil type
alfisols
Charcteristics of histosols
nasty murky muddy with organic matter decomposing
What are orogenic belts and how are they formed?
Formerly active edges of a continent formed by plate convergence
What is the primary trigger of plate tectonics?
The circulation of asthenosphere in the mantel.
Sometimes a glacier will leave behind a river and a trail of shit, this is known as__-
the outwash plain
The deposition of materials removed from previous horizons
illuviation
Inceptisol charcteristics
young soils found in arctic with ALLUVIUM and evidence of WEATHERING
alfisols distinguishing characteristic?
clay in the b horizon
Upside down river bed left behind by a glacier?
Esker
organic soils that form in poor drainage areas, made up of ORGANIC MATTER AT VARIOUS STAGES OF DECOMPOSITION
Histosols
The basement rocks of continents are known as _____
Craton
What are the features of a composite volcano?
most dangers,cylindrical, steep sided, lava bmbs, mt st heles, shasta, PYROCLASTIC flows.
Change in temperature differentails between air masses contribue to changes in what?
Pressure
horizon where there is loose and partly decayed organic mattert?
O
A region with sinkholes, caves and closed depressions is called this
karst landscape
Describe the structural controls of a Parallel drainage
closely spaced faults, steep topography, non cohesive sediments.
Wind velocity is the required element for this activity
Particles uindergoing rolling, pushing ,creeping, saltation etc
Horizon where there is zone of eluviation and leachin?
E
Characteristics of a shield volcano and foudn where?
very large, gently sloping slow moving lava mostly in snake river basic and west near idao (also hawaii