What changes to Earth’s surface could explain the fact that there is coal in Alaska?

Earlier the earth was in the shape of a large super landmass called Pangaea that got separate. Due to some changes in tectonic plates that cause splitting and opening of boundaries.

Learn more about the changes to Earth’s surface could explain fact that Alaska has coal.

During the 1960's the disclosure of enormous gas and oil fields in Alaska accelerated the change of most coal framework to other petroleum products. During this period Usibelli Coal Mine bought the Suntrana mine and the mining activities in the Matanuska coal fields stopped activity.