Newark Supergroup
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The Newark Supergroup, also known as the Newark Group, is an assemblage of Upper Triassic and Lower Jurassic sedimentary and volcanic rocks which outcrop intermittently along the east coast of North A
Late Triassic Balls Bluff siltstone of the Bull Run Formation in Manassas, Virginia
Late Triassic New Oxford Conglomerate in York County, Pennsylvania
Late Triassic Gettysburg Formation in York County, Pennsylvania
Early Jurassic Preakness Basalt, New Jersey
Pangaea
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Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Ca
Newark Supergroup
…and structure are the classic hallmarks of a rift valley; the fault-blocking illustrates the crustal extension forces in play during the breakup of Pangea during the late Triassic Period. The Appalachian Mountains had already been nearly eroded flat by the end of the period; the uplift and faulting that…
The supercontinent Pangaea in the early Mesozoic (at 200 Ma)
Alfred Wegener, c. 1924–1930
Appalachian orogeny
Fossil Dicroidium zuberi leaf from the Early Triassic of Argentina. Dicroidium was a ubiquitous tree across much of southern Pangaea during the Triassic period.