23 Mesozoic

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MESOZOIC: 

MESOZOIC CRETACEOUS 66-144 JURASSIC 208-144 TRIASSIC 245-208

Area of Evaporites: 

Area of Evaporites

MESOZOIC: 

MESOZOIC Continents about equal in northern and southern hemispheres (recall mid Paleozoic)

MESOZOIC: 

MESOZOIC Continents about equal in northern and southern hemispheres (recall mid Paleozoic) Today about 2/3 of land north of equator

MESOZOIC: 

MESOZOIC Continents about equal in northern and southern hemispheres (recall mid Paleozoic) Today about 2/3 of land north of equator Breakup of Pangaea

MESOZOIC: 

MESOZOIC Triassic events Magnetic banding in North Atlantic suggests formation beginning in early Triassic - rifting from New England to Mexico

MESOZOIC: 

MESOZOIC Triassic events Magnetic banding in North Atlantic suggests formation beginning in early Triassic Opening of South Atlantic in Late Jurassic

MESOZOIC: 

MESOZOIC Triassic events Magnetic banding in North Atlantic suggests formation beginning in early Triassic Opening of South Atlantic in Late Jurassic Major time of continental rifting

MESOZOIC: 

MESOZOIC Triassic events Magnetic banding in North Atlantic suggests formation beginning in early Triassic Opening of South Atlantic in Late Jurassic Major time of continental rifting recall sequence of events in rifting

MESOZOIC: 

MESOZOIC Triassic events Magnetic banding in North Atlantic suggests formation beginning in early Triassic Opening of South Atlantic in Late Jurassic Major time of continental rifting recall sequence of events in rifting stimulus for breakup?

MESOZOIC: 

MESOZOIC Triassic events North Atlantic opening Separation of Antarctica and Africa

MESOZOIC: 

MESOZOIC Triassic events North Atlantic opening Separation of Antarctica and Africa Ocean-continent collisions replace continent-continent collisions of Paleozoic Sonoma Orogeny in western North America

MESOZOIC: 

MESOZOIC Triassic events North Atlantic opening Separation of Antarctica and Africa Ocean-continent collisions replace continent-continent collisions of Paleozoic Fault block basins or rift valleys along newly formed continental margins

MESOZOIC: 

MESOZOIC Triassic events North Atlantic opening Separation of Antarctica and Africa Ocean-continent collisions replace continent-continent collisions of Paleozoic Fault block basins or rift valleys along newly formed continental margins eastern U.S. accumulated sediment - especially brown sandstone - brownstone

JURASSIC: 

JURASSIC Major events of the Jurassic

JURASSIC: 

JURASSIC Major events of the Jurassic Transgressions of epicontinental seas

Epicontinental Seas: 

Epicontinental Seas mya %

JURASSIC: 

JURASSIC Invasion of epicontinental seas at least 3 incursions in west - Sundance Sea

JURASSIC: 

JURASSIC Invasion of epicontinental seas at least 3 incursions in west - Sundance Sea North and South America moving west over ocean - Cordilleran Orogeny (many separate pulses) Nevadan Orogeny in Jurassic

JURASSIC: 

JURASSIC Invasion of epicontinental seas at least 3 incursions in west - Sundance Sea North and South America moving west over ocean - Cordilleran Orogeny (many separate pulses) Atlantic expanding north

JURASSIC: 

JURASSIC Invasion of epicontinental seas North and South America moving west Atlantic expanding north

JURASSIC: 

JURASSIC Invasion of epicontinental seas North and South America moving west Atlantic expanding north South America and Africa begin to split

CRETACEOUS: 

CRETACEOUS Continued expansion of South Atlantic separation of Africa and South America

CRETACEOUS: 

CRETACEOUS Continued expansion of South Atlantic separation of Africa and South America Continental rifting - (3 armed breaks) examples of failed arms (aulacogens) Niger River Amazon River

CRETACEOUS: 

CRETACEOUS Continued expansion of South Atlantic separation of Africa and South America Continental rifting - (3 armed breaks) examples of failed arms (aulacogens) Niger River Amazon River Continued pulses of Cordilleran Orogeny

CRETACEOUS: 

CRETACEOUS Continued expansion of South Atlantic separation of Africa and South America Continental rifting - (3 armed breaks) Continued pulses of Cordilleran Orogeny Jurassic-Cretaceous - Sevier Orogeny

CRETACEOUS: 

CRETACEOUS Continued expansion of South Atlantic separation of Africa and South America Continental rifting - (3 armed breaks) Continued pulses of Cordilleran Orogeny Jurassic-Cretaceous - Sevier Orogeny Cretaceous-Tertiary - Laramide Orogeny

WESTERN MOBILE BELT: 

WESTERN MOBILE BELT

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths (large body of intrusive rock) in Jurassic-Cretaceous

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths (large body of intrusive rock) in Jurassic-Cretaceous from British Colombia to Idaho to California

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths (large body of intrusive rock) from British Colombia to Idaho to California economically important deposits

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths (large body of intrusive rock) from British Colombia to Idaho to California economically important deposits lead, zinc, copper, gold, etc. emplaced at tectonic margins or at sites of magmatic intrusion

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths from British Colombia to Idaho to California economically important deposits lead, zinc, copper, gold, etc. emplaced at tectonic margins or at sites of magmatic intrusion Coal deposits around inland seas in Jurassic-Cretaceous

CRETACEOUS: 

CRETACEOUS Emplacement of batholiths Coal deposits around inland seas in Jurassic-Cretaceous Oil deposits from single celled organisms inland seas Tethys passageway between northern and southern continents - Mexico, Venezuela, Middle East, southern Eurasia

TECTONICS CONTINUED: 

TECTONICS CONTINUED Pangaea breaking up at rapid rate during Mesozoic

TECTONICS CONTINUED: 

TECTONICS CONTINUED Pangaea breaking up at rapid rate during Mesozoic Sea floor produced and destroyed at about 2X average rate

TECTONICS CONTINUED: 

TECTONICS CONTINUED Pangaea breaking up at rapid rate during Mesozoic Sea floor produced and destroyed at about 2X average rate Twice as many earthquakes and volcanoes

TECTONICS CONTINUED: 

TECTONICS CONTINUED Pangaea breaking up at rapid rate during Mesozoic Sea floor produced and destroyed at about 2X average rate Twice as many earthquakes and volcanoes Twice as much carbon dioxide - warming

TECTONICS CONTINUED: 

TECTONICS CONTINUED Sea floor produced and destroyed at about 2X average rate Twice as many earthquakes and volcanoes Twice as much carbon dioxide - warming - productive time for coal and oil forming organisms