Chapter 23 Flashcards
Paleogeography
Ancient geographic setting of an area
Passive margin
A continents edge which is not tectonically active
Transgression
When sea level rises, and the shore retreats to farther inland
Regression
When sea level falls, making the shoreline go seaward
Burgess Shale
Shale formation in the Canadian Rockies. Some of the best Cambrian fossils come from here
Taconic Orogeny
When present-day East North America developed an active margin and mountains came
Caledonian Orogeny
When Laurentia collided with baltica and formed Laurasia, in the late Silurian/early Devonian
Acadian Orogeny 👺👺👺👺👺👺👺👺👺👺👺👺👺👺
👺🚗🚗🚗🚗🚗🚗👺👺👺🚗🚗🚗🚗🚗🚗🚗👺👺🚗🚗👺👺🚗🚗👺👺🚗🚗🚗👺👺👺👺👺👺
When Avalonia(now Newfoundland) collided with southeastern Laurasia
Antler Orogeny 👤
When some Microcontinent or island arc collided with what is now western northamerica
Paleozoic fauna
In the Middle Paleozoic, the seas were dominated by these animals
Vascular plants
Plants that have tissue for circulating water and other nutrients
Mass extinction
When a bunch of animals go extinct in a (geologically) short period of time
Gondwana
Large continent in the Southern Hemisphere that was formed when South America, Africa, India, and Antarctica joined together
Cyclothems
Rock formations that display a repeating cyclic pattern
Ouachita Orogeny
When Gondwana collided with the southeastern margin of Laurasia
