Cap carbonates resting directly on all three Neoproterozoic tillites indicate that perhaps
A) glaciers of "snowball Earth" reached the tropics.
B) submarine volcanism ceased and with it carbon dioxide release as well.
C) there was a mass extinction occurred among the cyanobacteria.
D) frozen methane hydrates suddenly thawed out.
Correct Answer:
Verified
Q20: The Neoproterozoic radiation of large, conspicuous animals
Q21: The Proterozoic orogeny that built mountains along
Q22: Africa was assembled in the Pan-African orogeny
Q23: _ is a continental craton that was
Q24: The 1.85-billion-year-old Sudbury impact crater contains
A) spherical,
Q25: The Paleoproterozoic buildup of atmospheric oxygen resulted
Q26: The great Proterozoic supercontinent, which was split
Q27: In the Rodinia of 800 million years
Q28: The Proterozoic Keweenawan basalts
A) covered much of
Q30: The Paleoproterozoic shift at about 1.85 billion
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