Female Geologist examining Marcellus shale, near Marcellus New York, Source of natural gas and subject of fracking controversy

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Marcellus shale, near Marcellus, New York, source rock of huge quantities of natural gas and subject of the "fracking" controvercy, showing natural fracturing, exposed weathered surface

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Size: 3840px × 5759px
Photo credit: © John Cancalosi / Alamy / Afripics
License: Licensed
Model Released: No

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