tectonic event in which Avalonia collided with the southeast margin of Laurasia and added faults, folds, and igneous intrusions to the rocks of the Taconic Orogeny

mountain building event that occurred when the part of Gondwana that is now Africa began to collide with Laurentia

egg with a shell, providing a complete environment to a developing embryo, that allowed reptiles to colonize land during the Late Mississippian

mountain range that formed from the collision between Gondwana and Laurasia during the Late Paleozoic

collisional tectonic event that impacted the passive western margin of Laurentia

Canadian fossil formation that contains Cambrian soft-bodied organisms as well as organisms with hard parts

collisional tectonic event that closed the ocean between Luarentia and Baltica, forming the larger continent, Laurasia

repeating cyclic patterns of stacked sediment that represent cycles of glacial-interglacial periods; from base to top are generally sandstone-shale-coal-shale-limestone-shale

large continent in the southern hemisphere that formed as a result of collisional events during the late Paleozoic

occurs when an unusually large number of organisms become extinct over a relatively short period of geologic time

mountain building event that occurred during the late Paleozoic when Gondwana collided with the southeastern margin of Laurasia

ancient geographic setting of an area

collective name for the animals that dominated the Middle Paleozoic seas

edge of a continent along which there is no tectonic activity

occurs when sea level falls, causing the shoreline to move seaward, and results in shallower water deposits overlying deeper water deposits, with adjacent sediment types overlying each other in vertical succession

mountain building event that occurred during the Middle Ordovician

occurs when sea level rises and causes the shoreline to move inland, resulting in deeper water deposits overlying shallow water deposits with adjacent depositional faces overlying each other in a vertical succession

land plants with the ability to move water through their stems and stalks and which, during the Early Silurian, were small and leafless and grew along the ground

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PCS Earth Science

Chapter 23 Vocabulary - The Paleozoic Era

Term	Definition
Acadian Orogeny	tectonic event in which Avalonia collided with the southeast margin of Laurasia and added faults, folds, and igneous intrusions to the rocks of the Taconic Orogeny
Alleghenian Orogeny	mountain building event that occurred when the part of Gondwana that is now Africa began to collide with Laurentia
amniote egg	egg with a shell, providing a complete environment to a developing embryo, that allowed reptiles to colonize land during the Late Mississippian
Ancestral Rockies	mountain range that formed from the collision between Gondwana and Laurasia during the Late Paleozoic
Antler Orogeny	collisional tectonic event that impacted the passive western margin of Laurentia
Burgess Shale	Canadian fossil formation that contains Cambrian soft-bodied organisms as well as organisms with hard parts
Caledonian Orogeny	collisional tectonic event that closed the ocean between Luarentia and Baltica, forming the larger continent, Laurasia
cyclothems	repeating cyclic patterns of stacked sediment that represent cycles of glacial-interglacial periods; from base to top are generally sandstone-shale-coal-shale-limestone-shale
Gondwana	large continent in the southern hemisphere that formed as a result of collisional events during the late Paleozoic
mass extinction	occurs when an unusually large number of organisms become extinct over a relatively short period of geologic time
Ouchita Orogeny	mountain building event that occurred during the late Paleozoic when Gondwana collided with the southeastern margin of Laurasia
paleogeography	ancient geographic setting of an area
Paleozoic fauna	collective name for the animals that dominated the Middle Paleozoic seas
passive margin	edge of a continent along which there is no tectonic activity
regression	occurs when sea level falls, causing the shoreline to move seaward, and results in shallower water deposits overlying deeper water deposits, with adjacent sediment types overlying each other in vertical succession
Taconic Orogeny	mountain building event that occurred during the Middle Ordovician
transgression	occurs when sea level rises and causes the shoreline to move inland, resulting in deeper water deposits overlying shallow water deposits with adjacent depositional faces overlying each other in a vertical succession
vascular plants	land plants with the ability to move water through their stems and stalks and which, during the Early Silurian, were small and leafless and grew along the ground

Created by: Ms.Sala

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