4. The modern day Wilson cycle includes three different stages.... OO (for ocean

Question

4. The modern day Wilson cycle includes three different stages.... OO (for ocean opening); OC (for ocean closing) and CC (for final ocean closed/continental collision) a. What Wilson cycle stage would cause the orogeny and uplift hypothesized by Hutton? b. What Wilson Cycle stage builds the biggest volcanoes? c. What Wilson Cycle stage uses the subduction zone plate boundary? d. What Wilson Cycle stage uses the seafloor spreading ridge plate boundary? e. What Wilson Cycle stage produces the tallest mountain ranges? f. For Maine what Wilson Cycle stage is associated with the Silurian geologic time period? g. For Maine what Wilson Cycle stage is associated with Devonian geologic time period? h. For Maine what Wilson Cycle stage is associated with Triassic geologic time period? (2 pts each)

Explanation / Answer

Ans a) CC

Explanation- Orogeny and upliftment occurs when two continental plates or one being a continental plate, collide forming fold mountains.

Ans b) OC

Explanation- Volcanic activities occurs when subduction of oceanic plate occurs.

Anc c) OC

Explanation- Subduction zones are created once ocean closing has been initiated.

Ans d) OO

Explanation- Ridges are formed at places where two plates are moving apart. The rising magma cools forming the elevated landform.

Ans e) CC

Explanation- Like the Himalayas, the tallest mountains are fold mountains.

Ans f) OC

Ans g) CC

Ans h) OO

Explanation- Fossil evidences sugest deposition environments and therefore state of plate motions.

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