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Novas y el Cretácico (Parte 1)

Contexto geológico
Quiz by SQUAMGJOR
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Last updated: December 13, 2023
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First submittedDecember 13, 2023
Times taken5
Average score100.0%
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Hint
Answer
The oceanic floor first formed in the South Atlantic aroun 130 MA (___________)
Hauterivian
The continental breakup started in the ________
South
And spread ________
Northward
The process lasted from 130 to 110 MA (_________/_________)
Hauterivian/Albian
Thus, connections between South America and Africa remained almost __________ north of the _________ Delta
intact/Niger
By _______ time (around 115 MA), South America was more widely separated from Africa
Aptian
Forming a shallow and narrow South Atlantic Ocean that resembled the modern
Red Sea
Hint
Answer
Though the flow of marine water into the South Atlantic was possible via the Weddell Sea, no deepwater circulation into the South Atlantic occured unitl the Malvinas Plateau separated from Africa about 100 MA (__________)
Cenomanian
During Aptian-Albian times, the first incursions of the Atlantic onto the eastern side of South America occurred, flooding the Araripe and Parnaiba Basins in north-Eastern ______
Brazil
Where lake deposits and evaporites are overlain by marine deposits of the _______
Santana Formation
About 100 MA, the eastern tip of the [...] Malvinas ______ finally separated from the apex of South Africa. This permited an almost uniform extension of the South Atlantic,
Plateau
South America completely separated from Africa sometime between 100 and 95 MA (_____-______)
Albian-Cenomanian)
By Early Cretaceous, Africa had become separated from both East and West _________
Antarctica
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