Outcrop photos illustrating the types of fractures and lithologies in the quarry. (A) View of the east quarry wall exposing the three lithological layers. (B) Conjugate fractures on top of the south wall are exposed in plan view. (C) Cross-laminated oolitic grainstone exposed on the east wall is diagnostic of layer 3. (D) Sandstones exposed on top of east wall unconformably overlying the oolitic grainstones suggesting the presence of a sequence boundary. (E) View from the north wall exposing bedded and nodular chert occurrence, diagnostic to layer 1. (F) Horizontal stylolite bedding is commonly observed in cherty layer 1. These may act as flow barriers. Vertical, healed, and confined fractures are commonly observed in between the two layers bounded by stylolite bedding.
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