Tufa is calcium carbonate, precipitated in over-saturated lake water (Image ID # 111119-35hdrf)
Glacial dropstone in Proterozoic diamictite of Kingston Peak Formation, SE California. (Sed-49)
Turbidites, made of interbedded sandstone and shale. (Sed-56).
Load casts in sandstone and shale (Sed-35).
Photomicrograph of quartz sandstone–approx .5 cm across. Sed-28.
Jurassic Navajo Sandstone, Zion National Park, Utah. Sed-09
Debris flow deposits, made of matrix-supported conglomerate. Mosaic Canyon, Death Valley National Park, California. (Sed-03)
Cretaceous Kootenai Fm., SW Montana. The conglomerate contains rounded clasts of chert and quartzite. (Sed-04)
Tilted beds of conglomerate, SE California. (IMG_1276)
left to right: shale, sandstone, conglomerate. (7344)
Graded bed, sandstone and shale. About 2 inches from bottom to top. (5D-2450)
Cross-bedded oolites in sandy limestone of Altyn LImestone of the Proterozoic Belt Supergroup, Montana. (30-10281)
Graded bed in sandstone and shale of turbidites: top-to-left (150618-35)
Tilted sedimentary rock of the Canadian Rockies. (120713-43)
Ripple marks in sandstone of the Proterozoic Grinnell Formation of the Belt Supergroup, Glacier National Park, Montana. (110623-32)
Small-scale cross-bedding in sandstone. (110528-57)
Sedimentary Breccia, made of limestone fragments and a matrix of calcite, exposed in a wall of Titus Canyon in Death Valley National Park, California. Interstitial material is calcite. Interstitial material is calcite. (110501-16)
Depositional contact and erosional windows, Jurassic Entrada Fm (red) overlying Jurassic Navajo Sandstone (white), Arches National Park, Utah. (090316-115)
Sedimentary breccia of Hoh Subduction assemblage, Olympic Coast, Washington. The white fragment is limestone mixed with sandstone fragments. (150912-46)
Cambrian limestone in Death Valley National Park, California (Image ID# 30-4134)
Thousands of feet of Paleozoic and Mesozoic sedimentary rock, exposed in the canyons of Southeastern Utah. (Image ID# WE-141)