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Who was the Laurentian Divide named after?

Laurentia lends it's name to the Laurentian Divide. Laurentia is part of the continental crust that forms North America. The Laurentian Divide is a fault line that disects Laurentia. Laurentia is named after the Laurentian Shield.


During which period was Laurentia completely surrounded by passive margins?

Laurentia was completely surrounded by passive margins during the Neoproterozoic period, approximately 750-600 million years ago. This period saw the formation of the supercontinent Rodinia, where Laurentia was a central part and was surrounded by passive margins as it drifted towards the equator.


Which landmass collided with Laurentia and caused the Acadian Orogeny?

The Acadian arc system impacted the North American Continent (Laurentia) along the eastern seaboard. This collision along with that of the earlier Taconic arc system resulted in the creation of the Appalachian and Ouachita orogeny's.


What landmass collided with Laurentia and caused the Acadian Orogeny?

The Avalonian Island Arc riding on the small Avalonian Plate. Parts of the British Isles and southern Europe were also once on this plate.


What is the link between Eurasia Pangaea and Gondwana?

Eurasia was part of the supercontinent Pangaea, which existed about 335 million years ago and later split into Laurasia and Gondwana. Gondwana included the landmasses that would eventually become Antarctica, South America, Africa, Arabian Peninsula, the Indian subcontinent, and Australia. Gondwana began to break apart about 180 million years ago, leading to the continents we recognize today.