The Marcellus shale formation is a huge deposit of rock that formed from the floor of a prehistoric sea. And it's massive. Taking up a large chunk of (mostly) the northeastern United States, it stretches from Alabama to New York, laying under vast swaths of many of the states in between:
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Like any ocean, the ocean that formed the Marcellus was heavily populated by lifeforms, and this means that the lifeforms left behind organic chemicals -- which means fossil fuels. In this case, natural gas...[
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