Question

Why is it unlikely that a similar coal-forming environment (carboniferous) will repeat itself in north america in the near future?

Answer 1

Most of the vast North American coal resources located from Pennsylvania to Illinois began forming during the Pennsylvanian and Mississippian periods of Earth history. (This time period is also referred to as the Carboniferous period.) Using Figure, a restoration of a Pennsylvania period coal swamp, describe the climatic and biological conditions associated with this unique environment. Next, examine the accompanying diagram that illustrates the geographic position of North America during the period of coal formation. Where, relative to the equator, was North America located during the time of coal formation? Why is it unlikely that a similar coal-forming environment will repeat itself in North America in the near future? (You may find it helpful to visit the University of California Time Machine Exhibit at www.ucmp.berkeley.edu/carboniferous/carboniferous.html.)