Sausageleaf talinum finds suitable habitat in sand and spherical concretions eroded from the lower part of the Jurassic-aged Navajo Sandstone. The concretions (about half an inch in diameter) formed when iron-oxide minerals precipitated out of ground water that flowed through the sandstone.
This photo was submitted to us by Mike McCandless of Emery County. The San Rafael Swell is an eroded anticline approximately 600,000 acres in size inside the Colorado Plateau contained entirely in Emery County. The Swell exposes many different types of colorful sedimentary rocks that have been eroded into beautiful valleys, canyons, gorges, mesas and buttes. Great photo Mike!
Arches National Park, Grand County, Utah
Photographer: Michael Vanden Berg
A small window in the Slick Rock Member of the Entrada Sandstone frames a view of Utah’s most famous landform, Delicate Arch. The arch is composed of Jurassic-aged sandstone including the Slick Rock Member (base and pedestals) and Moab Member of the Curtis Formation (bridge). In the distance, Oligocene-aged igneous rock forms the snow-covered La Sal Mountains.
The La Sal Mountains laccolith (a shallow, mushroom-shaped igneous intrusion) of Oligocene age rises above the red Mesozoic and Paleozoic sedimentary rocks exposed in the Colorado River drainage. Washer Woman Arch, visible in the upper part of the small butte in the middle foreground, is eroded out of the Triassic-Jurassic-aged Wingate Sandstone.