Nacimiento Formation Nacimiento Formation The Nacimiento Formation is a sedimentary rock formation found in the San Juan Basin of western New Mexico (United States) and named for the Nacimiento Mountains. It is a heterogeneous nonmarine formation composed of shale, siltstone, and sandstone, deposited in floodplain, fluvial and lacustrine settings, and made up of sediment shed from the San Juan uplift to the north and the Brazos-Sangre de Cristo uplift to the east. It was deposited mostly between ~64.5 and ~61 million years ago, during the early and middle Paleocene. The climate was humid and warm to hot. This unit interbeds with the
Lemon squeezer (rock formation) grow on top of a thin rock ceiling above the path. Lemon squeezer (rock formation) The Lemon Squeezer is an unusual rock formation in Harriman State Park, New York. It is located at the intersection of the Appalachian Trail (White) and the Arden-Surebridge Trail (Red Triangle), near the base of Island Pond Mountain in the town of Tuxedo. The trail initially passes under a large boulder resting on top of other rocks. After passing this point, the nature of the Lemon Squeezer becomes apparent as the hiker gets "squeezed" through a path that is high, wide, and angled 15 degrees.