Term
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Definition
-active tectonic process
(cuts through continents) |
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Term
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Definition
Processe that collectively produces a mountain belt
-folding and thrust faulting
-metamoprhism and igneous activity
-earths crust |
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Term
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Definition
(younger)
-mesozoic and cenozic eras
Alpines-Himalayan Chain= Europen and Aferican collison of plates,(parts of formed by- shallow water sediments deposited by ancient continental shelf, others deeper water marine strata deposited by ancient cotinental slope and rise)
American Cordillera= moutain chains western part of Canada to South america
Island Arcs in Western Pacific=Made by hotspots |
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Term
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Definition
(older)
Paleozic
Appalachains eastern U.S=fold & thrust moutain system
Urals Russia |
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Term
| Detachment Surface & Decollement |
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Definition
1.The surface along which movement occured is Detachment Surface
2. Slice that moved is Decollement |
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Term
Folded & Thrusted
(moutain types) |
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Definition
(conversion)
-alps
-himalaya
-appalachians |
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Term
Fault Block
(moutain types) |
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Definition
(Tensional)
-Basin & Range, NV |
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Term
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Definition
(mantle raises the land up)
-rockies |
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Term
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Definition
(hotspots, subduction zone, volcanic ridges, spreading ridge)
-Hawaii |
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Term
Mountain Building
(plate tectonics) |
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Definition
-convergent plate boundaries
-continental collisions
-rifting
-hotspots |
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Term
Ocean:Ocean
(convergent boundaries) |
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Definition
Produces
Volcanic Mountains |
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Term
Ocean:Contintenal
(convergent boundaries) |
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Definition
Produces
-Volcanic mountains & Folding
(contental conversion)
-Accrationary wedge is accumplation sedimentry rocks & Metamorphis rock w/ some scraps of ocean cust |
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Term
Continental:Continental
(convergent boundaries) |
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Definition
Produces
Mountains
-collision between 2 countinents crust, b/w continental fragment will result and form folded mountains
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Term
Continental Accretion
(convergent boundaries) |
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Definition
Produces
-Crustal fragments collide wtih and stay connected to contintenal plate
Terranes
-crustal fragments geo history distinct from adjoing fragments
-occur along pacific coast |
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Term
Ocean Ridges
(divergent boundaries) |
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Definition
(tensional force)
-divergent plate boundaries are fault block type moutains
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Term
Continental Rifts
(divergent boundaries) |
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Definition
(tensional force)
-divergent plate boundaries are fault block type moutains
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Term
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Definition
pg.57
caused by Rising Mantle
-Monsoons can create it
-forms plums (rises from core mantle)
-broadbase highs
-contintenal crust upward |
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Term
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Definition
| -fixed point on the Earths surface defined by long-lived volcanism |
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Term
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Definition
pg.558
Made
Himalayas & Tibetan Plateau
-plant fossils of pliocene epoch
-changing rates of denudation
-continually destructive effects of weathering
-mass wasting
-erosion |
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Term
Isostatic Adjustments
(vertical crustal movements) |
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Definition
-less dense crust flots on the denser rocks of a mantle
-floating gravitantional balance is istostasy
-high mountains have deeper roots |
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Term
Erosion Increases
(vertical crustal movements) |
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Definition
- crust rises->erosion increases
(rough topography & glaciers)
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Term
Gravitational Collapse
(vertical crustal movements) |
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Definition
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Term
Old Precambrian Mountain/belts
(vertical crustal movements) |
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Definition
(continental sheilds, orgins)
-old rocks
-very flat in the U.S
-moutains change so much from erosion that now the land is flat |
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Term
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Definition
-Appalachians
-Western N. American Cordillara |
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Term
Growth of Continents
(U.S) |
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Definition
| -active margin on the West Coast=still active today |
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Term
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Definition
| -may last several hundred Ma. |
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Term
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Definition
-deeply dissected by erosion
(erosion-weathering,rain, chemical weathering,glaciers) |
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