During the Cambrian Period, the Ancestral Rocky Mountains and associated basins began to form in the western part of North America.
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Q5: Black shales are especially abundant from the
Q6: The Ancestral Rockies formed via continental-continental collision
Q7: The Pennsylvanian and Permian periods in North
Q8: The Carboniferous coal deposits of North America
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Q11: Worldwide cyclothem activity in the late Paleozoic
Q12: Late Paleozoic limestones are used for manufacturing
Q13: Cyclothems are the same as sequences.
Q14: Panthalassa was a global ocean surrounding Pangaea.
Q15: Laurentia and Baltica collided to form Laurasia
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