Geology Ch 12
Terms
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- underwent a series of collisions beginning in the Carboniferous
- Laurasia and Gondwana
- type of plate boundary that resulted from the Alleghenian orogeny
- continental-continental convergent
- orogenies that were part of the closing of the Iapetus Ocean
- Acadian, Alleghenian, Caledonian, Taconic
- Late Paleozoic-aged rocks contain
- a variety of mineral resources
- uplift in the southwestern part of the craton during the Late Absaroka resuled in
- Ancestral Rockies
- Alleghenian orogeny
- Pennsylvanian to Permian orogenic event during which the Appalachian mobile belt from New York to Alabama was deformed; occurred in teh area of present-day Appalachian mountains
- Mississippian Period ws dominated by
- carbonate depositon
- Cordilleran mobile belt was the site of
- a minor Devonian orogeny
- formation of Pangia was completed during
- the Permian
- by the Early Permian, the Absaroka Sea occupied
- a narrow zone of the south-central craton
- type of depositon that predominated on the craton during the Late Kaskaskia
- carbonates
- mineral resources of Late Paleozoic-aged rocks include
- petroleum, coal, evaporites, silica sand, lead, zinc, and other metallic deposits
- Ouachita orogeny
- orogeny that deformed the Ouachita mobile belt during the Pennsylvanian Period
- major reef development in wester Canada occured in
- Kaskaskia sequence
- produced the Carskill Delta
- weathering of the Acadian Highlands
- Ancestral Rockies
- Late Paleozoic uplift in the southwestern part of the North American craton
- mountain building occurred in the Ouachita mobile belt during
- the Pennsylvanian and Early Permian
- numerious microplates existed during
- the Paleozoic Era
- deposited over a large area of the craton during the Late Devonian and Eary Mississippi
- presistent and widespread black shale (the Chattanooga Shale and its equivalents)
- these continents collided and were sutured to Laurasia
- Siberia and Kazakhstania
- all part of the global tectonic activity resulting from the assembly of Pangaea
- Caledonian, Acadian, Hercynian, and Alleghenian
- Catskill Delta
- Devonian clastic wedge that was deposited adjacent to the highlands that formed during the Acadian orogeny
- Baltica and Laurentia collided during the Late Paleozoic to form
- Laurasia
- extensive cratonic black shales were deposited during
- Late Devonian to Early Mississippian
- Ellesmere orogeny
- Mississippian orogeny affecting the northern margin of Laurentia
- cratonic mountain building occurred during the
- Pennsylvanian Period
- Hercynian orogeny
- Pennsylvanian to Permian orogeny in the Hercynian mobile belt of southern Europe
- Ouachita mobile belt changed from a passive plate margin to an active plate margin
- Mississippian Period
- requirement for the formation of extensive black shales
- undisturbed anaerobic bottom water, reduced supply of detrital sediment, high organic productivity in the overlying oxygenated waters, low-every depositional site
- Acadian orogeny
- Devonian orogeny in the northern Appalachian mobile belt resulting from a colision of Baltica with Laurentia
- microplates played an important role in the
- formation of Pangaea
- first Paleozoic orogeny to occur in the Cordilleran mobile belt
- Antler
- during the Antler orogeny what was thrust eastward
- deep-water sediments were thrust eastward over shallow-water sedimetns
- Antler orogeny
- Late Devonian to Mississippian orogeny that affected the Cordilleran mobile belt; deformation extended frm Nevada to Alberta, Canada
- much history of the North American craton can be deciphered from the rocks of
- Kaskaskia and Abaroka sequences
- Extensive continental glaciation of the Gondwana continent occured during
- Carboniferous Period
- by the end of the Permian Period, the Absaroka Sea had
- retreated from the craton
- Late Paleozoic worldwide ocean that surrounded the supercontinent Pangea
- Panthalassa
- Gondwana moved over the South Pole and experienced
- several glacial-interglacial periods
- source area for the basal Kaskaskia sanstones
- Appalachian mobile belt highland, margins of the Ozark Dome, Canadian Shield in Wisconsin
- European counterpart to the Devonian Catskill Delta
- Old Red Sandstone
- the minor Devonian orogeny on the Cordilleran mobile belt
- Antler orogeny
- most of the Kaskaskia sequence ws dominated by
- carbonates and associated evaporites
- during cratonic mountain building what was deposited in the intervening basins
- thick nonmarine detrital rocks and evaporites
- in the area occupied by the Absaroka Sea, what developed
- several large reefs and associated evaporites
- Kaskaskia sequence
- widespread sequence of Devonian and Mississippian sedimentary rocks bounded above and below by unconformities; deposited during a transgressive-regressive cycle of the Kaskaskia Sea
- Gondwana's interglacial periods resulted in
- global changes in sea level and trangressions and regressions along the low-lying craton margins
- cyclothem
- vertical sequence of cyclically repeated sedimentary rocks resulting from alternating periods of marine and nonmarine deposition; commonly contain a coal bed
- occurred in the Ouachita mobile belt during the Pennsylvanian and Early Permian
- mountain building
- basal beds of the the Kaskaskia sequence deposited over the exposed Tippecanoe surgace consisted of either
- mature sandstones, derived from the eroding Taconic Highlands, or carbonate rocks
- main economic deposit of a cyclothem
- coals
- Laurasia
- Late Paleozoic, Northern Hemisphere continent composed of the present-day continents of North America, Greenland, Europe, and Asia
- resulted in cyclothems and the formatoin of coals during the Pennsylvanian Period
- transgressions and regressions over the low-lying craton
- Caledonian orogeny
- Silurian-Devonian orogeny that occurred along the northwestern margin of Baltic resulting from the collisoin of Baltica with Laurentia
- Ouachita mountain building was partly responsible for
- cratonic uplift that occurred in the southwest, producing the Ancestral Rockies
- Absaroka sequence
- widespread sequence of Pennsylvanian and Permian sedimentary rocks bounded above and below by unconformities; deposited during a transgressive-regressive cucle of the Absaroka Sea
- Rhythically repetitive sedimentary sequences
- cyclothems
- Devonian Period was a time of
- major reef building
- Devonian reef building occured in
- western Canada, southern England, Belgium, Australia, and Russia