Geo Exam 4

Diatoms, dinoflagellates, calcareous nannofossils, and planktonic foraminifera all contributed to:

• Deep-sea oozes

• Global cooling

• Volcanic activity

• Tectonic activity

What is the sequence of events for the creation of the Basin-and-Range Province?

• Thrust Faulting, Normal Faulting + rhyolitic volcanism, Block faulting + basaltic volcanism

• Block faulting + basaltic volcanism, Normal Faulting + rhyolitic volcanism, Thrust Faulting

• Normal Faulting + rhyolitic volcanism, Block faulting + basaltic volcanism, Thrust Faulting

• Normal Faulting + rhyolitic volcanism, Thrust Faulting, Block faulting + basaltic volcanism

What were the index fossils for the Cretaceous Period?

• Crinoids

• Ammonoids

• Gastropods

• Trilobites

Thick Chalk deposits formed when which transgression peaked over the North American craton

• Sauk

• Zuni

• Tippecanoe

• Kaskaskia

Which of the following organisms were completely wiped out by the mass extinction at the end of the Triassic?

• Large amphibians

• Plesiosaurs

• Conodonts

• Ichthyosaurs

What is the reason for the rise in 18O in seawater during times of glaciation?

• 16O gets trapped in glaciers

• 18O evaporates easily from seawater

• 6O is preserved in shells of planktonic foraminifera

• 8O migrates to different latitudes

This mountain building episode affected even Arkansas and Oklahoma during the Late Paleozoic.

• Alleghenian

• Acadian

• Taconic

• Caledonian

The Earth’s magnetic field comes from the movement of:

• The asthenosphere

• The outer core

• The mantle

• The lithosphere

Which insects evolved certain features with the help of angiosperms?

• Ants

• Centipedes

• Bees

• Spiders

When did Zuni transgression begin on the North American craton?

• Mesozoic

• Paleozoic

• Jurassic

• Triassic