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Stop 3: Characteristic fracture distribution in Cardium sandstones in hinge of a gentle, hundreds-of-meter scale anticline: Vertical type 1 are orthogonal to rock face; vertical type 2 constitute the rock face and are parallel to it; type 3 are shallowly inclined to bedding. Note that most type 1 fractures terminate at bedding plane. Also note the relationship between fracture spacing and bed thickness.
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