How does the Absaroka sequence differ from the Kaskaskia sequence? What do these differences
mean for the environment of the time? What will be an ideal response?
The Absaroka sequence, from Late Mississippian to Early Jurassic, overlies the Kaskaskia sequence
from Middle Devonian to Middle Mississippian. The sequences are the result of different tectonic
regimes. The Pennsylvanian rocks have cyclothems, indicating that sea level rose and fell repeatedly.
Ice sheets on Gondwana grew and melted, causing sea level to fall and rise.
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What grade of metamorphism occurs at a depth of 19 km and a temperature of 700 degrees C?
A) high-grade metamorphism B) medium-grade metamorphism C) low-grade metamorphism D) magma
These are also known as hydrocarbons: ________
Fill in the blank(s) with correct word
All the different limiting factors that act upon a population are collectively known as environmental resistance.
Answer the following statement true (T) or false (F)
Which of the following is NOT true about passive continental margins?
A. They are commonly found at subduction zones. B. They form after continents are rifted apart. C. They occur away from plate boundaries. D. They have little seismic or volcanic activity. E. They tend to be wider than active margins.