Nanopores and nanofissures in the clay layers of Gulong shale (IMAGE)
Caption
a) and b): A large number of nanopores (red arrows) and nanofissures (yellow arrows) developed in the clay layers, which originally adsorbed organic matter and later became the site for hydrocarbon accumulation. c): A larger view of visual b)
Credit
Dr. He Wenyuan and Earth Science Frontiers
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