The Early Paleozoic Era Flashcards
During this period, the world consisted of six major continents dispersed around the globe at low
tropical latitudes. Water circulated freely among ocean basins, and the polar regions were mostly ice-free.
Cambrian
The beginning of the Paleozoic Era consisted of how many major continents?
Six
The six major continents of the Paleozoic Era fragmented from what Supercontinent?
Pannotia
A microcontinent composed of parts of present-day Belgium, northern France, England, Wales, Ireland, the Maritime Provinces and Newfoundland of Canada, as well as parts of the New England area of the United States.
Avalonia
The Paleozoic Continent that is now parts of present-day S. America, Africa, Florida, Antartica, Australia, India.
Gondwana
The Paleozoic Continent that is now parts of present-day N. America, Greenland, Scotland, Eastern Russia
Laurentia
The Paleozoic Continent that is now parts of present-day Russia, Scandinavian, Poland, N. Germany
Baltica
The Paleozoic Continent that is now parts of present-day Russia and Asia
Siberia
The triangular Paleozoic Continent considered by some to be an extension of the Paleozoic Siberian Continent.
Kazakhstania
The Paleozoic Continent that is now parts of present-day all of SE Asia, Indochina, Thai, and Malay
China
During the ________ and ________, plate movements resulted in a changing global geography.
Ordovician and Silurian
The southward movement of the Gondwana and its crossing to the South Pole was indicated by what deposits?
Upper Ordovician Tillite Deposits
When did the microcontinent Avalonia separate from Gondwana?
Early Ordovician
What continent did Avalonia collide with during the Late Ordovician-Early Silurian?
Baltica
The ________ _______ _______ was born due to the subduction of the Iapetus Plate beneath Laurentia
Applachian Mobile Belt
The first orogeny to affect the Appalachian Region
Taconic Orogeny
Throughout the Neoproterozoic-Early Ordovician, the Appalachian region was a broad, ________, _______________ _________
Passive, Continental Margin
What ocean was widening during the Taconic Orogeny?
Iapetus Ocean
What formed when Baltica, along with the newly attached Avalonia, moved northwestward and collided with Laurentia?
Laurasia
In what period did Laurasia form?
Silurian
What marked the collision of Baltica and Laurentia, which closed the Northern Iapetus Ocean?
Caledonian Orogeny
