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Stop 1: To the left of the student is a normal fault that juxtaposes the white St. Peter Sandstone on the right against the dark gray Joachim Dolomite on the left. The fault has been preferentially weathered and eroded. On the right one can also see the contact b/t the St. Peter and the Joachim.
Stop 1: Mud-cracked Joachim Dolomite (profile view), with overlying ripped up dolomicrite intraclasts. This sedimentary structure indicates an intertidal depositional environment--episodes of high tide bringing in new carbonate mud sediment, episodes of low tide causing dessication and mud cracking, as well as a storm episode indicated by the break up of the mud-cracked mud and deposition of small chips (intraclasts) of dolomicrite.
Stop 2: Colonial coral in the Plattin at Allison West road cut.
Stop 5: The disconformity between the Everton Fm and the St. Peter Sandstone is about 1/3 of the way up the visible part of this outcrop. This contact is the most weathered contact within the outcrop. Note how it undulates, truncating some beds in the underlying formation.
Stop 8: Left: "Super-Dave" Moore clowns around on one of the "pedestals", the geomorphic curiosity that attracts visitors to this site. Right: Kevin Conner uses Brunton compass, looking across at the ledge of "Middle Bloyd Sandstone" that once connected with the sandstone he is standing on. A nice place to demonstrate the principle of "lateral continuity".
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