Geology Ch 11
Terms
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- mobile belt located along the eastern margin of the North American craton
- Appalachian mobile belt
- the sediments shed into the western epeiric sea by the Taconic Highlands produced
- a clastic wedge
- Laurentia
- name given to a Proterozoic continent that was composed mostly of North America and Greenland, parts of northwestern Scotland, and perhaps parts of the Baltic shield of Scandinavia
- shields are composed of
- Precambrian metamorphic and igneous rocks
- during the Early Paleozoic era, orogenic activity was confined to which moble belt
- Appalachian
- Kazakhstania
- one of six major Paleozoic continents, a triangular-shaped continent centered on Kazakhstan
- the rocks of shields reveal
- a history of extensive orogenic activity during the Precambrian
- first major transgression onto the craton
- Sauk Sea
- how many continents existed at the beginning of the Paleozoic Era
- six
- organic reef
- wave-resistent limestone structure with a structural framework of animal skeletons
- Ouachita mobile belt
- mobile belt located along the southern margin of the north American craton; probably continuous with the Appalachian mobile belt
- relatively stable and immobile parts of continents
- cratons
- order of precipitation of seawater salts from the least soluble to the most soluble
- carbonate, gypsum, halite
- Taconic orogeny was the first of several orogenies to
- affect the Appalachian mobile belt
- first major transgressive sequence onto the North American craton
- Sauk
- what type of deposition occured during Tippecanoe time
- extensive carbonate deposition
- Siberia
- one of six major Paleozoic continents; composed of Russia east of the Ural Mountains, and Asia north of Kazakhstan and south of Mongolia
- clastic wedges can be described as
- coarse-grained and thich near the uplift and become finer-grained and thinner away from the uplift
- elongate area of mountain-building activity
- mobile belts
- Sauk sequence
- widespread sequence of sedimentary rocks bounded above and below by unconformities; deposited during a latest Proterozoic to Early Ordivician trangressive-regressive cycle of the Sauk Sea
- major transgressive-regressive cycle bounded by cratonwide unconformities
- cratonic sequence
- resources of Early Paleozoic age rocks include
- building stone, limestine for cement, hydrocarbons, evaporites, and iron ore
- famous formation forms the basal sandstones of the Tippecanoe sequence
- St. Peter
- Iapetus Ocean
- Paleozoic ocean basin that separated North America fro Europe, began closing when North aMerica and Europe began moving toward one another, and it ws eliminated when the continents collided during the late Paleozoic
- what kind of plate boundary formed during Tippecanoe time
- an oceanic-continental convergent plate boundary
- Taconic orogeny resulted from what type of plate movement
- oceanic-continental convergent
- while Laurentia was moving northward, Gondwana moved to a
- south polar location
- clastic texture
- sedimentary rocks consisting of the broken particles of pre-existing rocks or organic strucutres such as shells
- A passive margin is the transition between
- oceanic and continental crust
- exposed portion of the crystalline basement rocks of a continent
- shield
- how many of continents of the Paleozoic Era were located near the paleoequator
- four
- Sauk and Tippecanoe sequences were deposited during
- latest Proterozoic to Early Devonian
- two major components of most continents
- relatively stable craton over which epeiric seas transgressed and regressed, surrounded by mobile belts in which mountain building took place
- Appalachian mobile belt extends from
- Newfoundland to Georgia and probably continuous to the southwest with the Ouachita mobile belt
- Paleozoic ocean separating Laurentia from Siberia and Baltica
- Iapetus
- during the Sauk sequence, the only area above sea level besides a portion of the Canadian Shield
- Transcontinental Arch
- Early Paleozoic age rocks contain a variety of
- resources
- Franklin mobile belt
- most northerly mobile belt in North America; extends from northwestern Greenland westward across the Canadian Arctic islands
- clastic wedge
- extensive accumulation of mostly clastic sediments eroded from and deposited adjacent to an uplifted area,
- Paleozoic continents
- Baltica, China, Gondwana, Kazakhstania, Laurentia, Siberia
- the name of the island series not covered by the Sauk Sea
- Transcontinental Arch
- newly formed Taconic Highlands shed sediments into
- western epeiric sea
- Tippecanoe sequence
- widespresd sequence of sedimetnary rocks bounded above and below by unconformities; deposited during an Ordovician to Early Devonian transgressive-regressive cucle of the Tippecanoe sea
- area of North America where reefs were abundant during the Tippecanoe sequence
- Michigan Basin
- epeiric sea
- broad shallow sea that covers part of a continent; six epeiric seas covered parts of North America during the Phanerozoic Eon
- what activity occured during Tippecanoe time
- large barrier reefs enclosed basins, resulting in evaporite depositon within these basins
- predominant cratonic lithologies of the Tippecanoe sequence
- evaporites and reef carbonates
- the plate boundary of the tippecanoe time resulted in what
- Taconic orogeny
- China
- one of six major Paleozoic continetns, composed of all of southeast Asia, including Cina, Indochina, part of Thailand, nad the Malay Penninsula
- passive margin is
- not an active plate margin
- one of the major sources of Early Paleozoic age iron ore is in
- Clinton formation
- Gondwana
- one of six major Paleozoic continetns; composed of the present-day continents of South America, Africa, Antarctiva, Australia, and India, and parts of other continents such as southern Europe, Arabia, and Florida; began fragmenting during the Triassic Period
- four mobile belts that formed around the margin of the North American craton during the Paleozoic
- Franklin, Cordilleran, Ouachita, and Appalachian
- the clastic wedge produced by Taconic Highlands' shed is called
- Queenston Delta
- cordilleran mobile belt
- mobile belt in western North America bounded on the west by the Pacific Ocean and on the east by the Great Plains; extends north-south from Alaska into Mexico
- elongated area marking the site of former mountain building
- moble belt
- cratonic sequence
- widespread sequence of sedimentary rocks bounded above and below by unconformities deposited during a transgressive-regressive cycle of an epeiric sea
- geologic history of North American can be dividedinto cratonic sequences that reflect
- craton wide transgressions and regressions
- Baltica
- one of six major Paleozoic continents, composed of Russia west of the Ural Mountains, Scandinavia, Poland, and north Germany
- Taconic orogeny
- Ordovician orogeny that resulted in deformation of the Appalachian mobile belt
- sequence stratigraphy
- study of rock reltaionships within a time-stratigraphic framework of related facies bounded by widespread unconformities
- the cratonic sequences that reflect cratonwide transgressions and regressions
- Sauk and Tippecanoe
- at its peak, the Sauk Sea covered the craton except for
- a series of large, northeast-southwest trending islands
- Tippecanoe sequence began with
- deposition of an extensive sandstone over the exposed and eroded Sauk landscape
- orogeny took place along the westem margin of Baltica during the Silurian Period
- Caledonian
- Gondwana's movement to a south polar location is indicated by
- tillite deposits
- cratons form the foundation upon which what is deposited
- Phanerozoic sediments
- easter edge of North America was a stable carbonate platform during what time
- Sauk
- during the Sauk, the eastern margin of Laurentia was a
- passive plate margin
- Queenston Delta
- clastic wedge resultig from the erosion of the highlands formed during the Taconic orogeny; deposited on the west side of the Taconic Highlands