The Gypsum Spring Formation is a stratigraphical unit of Middle Jurassic age in the Williston Basin. It takes the name from Gypsum Spring in Wyoming,...

Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is widely mined and is used as a fertilizer...

satin spar, desert rose, and gypsum flower are crystal habit varieties of the mineral gypsum. All varieties of gypsum, including selenite and alabaster...

known as the Spearfish Formation. Above the Spearfish Formation is a thin band of white gypsum, called the Gypsum Springs Formation, Jurassic in age. Overlying...

disconformity from the underlying Middle Jurassic Gypsum Springs Formation. The Sundance Formation is known for fossils of an extinct species of marine...

and Nebraska. It is a heterogeneous red bed formation, commonly with siltstone and gypsum low in the formation and sandstone and shale higher up. Other rock...

There are several variable beds of anhydrite and gypsum and the central body of most of the formation is a massive salt bed. Localized red beds and green...

fragments may have rust stains from exposure of pyrite to air, and tiny gypsum (CaSO4·2H2O) crystals from the reaction between pyrite and limestone particles...

+ SO2−4 → CaSO4 (formation of calcium sulfate) CaSO4 + 2 H2O → [CaSO4·2H2O] (formation of gypsum) This reaction chain forms gypsum. The karstification...

member of the Horse Spring Formation is a geologic formation in Nevada. It contains sandstone with beds of conglomerate and gypsum in the Neogene period...

contains conglomerate, sandstone, gypsum-mudstone, and gypsum-sandstone-mudstone facies; it is undetermined if the gypsum is of marine or lacustrine origin...

the large natural deposits of gypsum in this area. The dissolution of underlying gypsum beds has led to the formation of sinkholes which are common features...

inflammatory diseases. Borax springs Gypsum springs Saline springs Iron springs (chalybeate spring) Radium springs (or radioactive springs) have a detectable level...

The Bakken Formation (/ˈbɑːkən/ BAH-kən) is a rock unit from the Late Devonian to Early Mississippian age occupying about 200,000 square miles (520,000 km2)...

record of decapod crustaceans (Astacidea, Stenochiridae) from the Gypsum Springs Formation (Jurassic) of Wyoming, USA" (PDF). Bulletin of the Mizunami Fossil...

stages. The Carmel Formation consists of up to 1,000 feet (300 m) of mudrock and sandstone interbedded with limestone and gypsum. It was laid down in...

to form gypsum, for example, results in an increase of volume by 63%. In arid environments where anhydrite is widespread, a storm or spring tide could...

collapse of caves, especially in water-soluble rocks such as limestone, gypsum and dolomite. This process is known as karstification. They can cover areas...

that state's Gladwin County. This formation is of economic importance for salt mining, oil reservoir creation, gypsum mining, and potential natural gas...

1999, a mineralogist group discovered a cave filled with giant selenite (gypsum) crystals in an abandoned silver mine, Mina Rica, near Pulpi, Province of...

is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates...

landforms are a result of the dissolution of soluble rocks like limestone, gypsum or dolomite by water. In the case of glaciokarst, the karst landscape has...

form in other rocks, including chalk, dolomite, marble, salt beds, and gypsum. Bedrock is dissolved by carbonic acid in rainwater, groundwater, or humic...

the eolian beds of the De Chelly Formation, and the Los Vallos Formation is 42% sandstone, 28% siltstone, and 24% gypsum, in contrast with the thinly bedded...

Castile Formation. This formation consists of alternating layers of gypsum/anhydrite and limestone, as well as massive beds of gypsum/anhydrite, salt, and...

or aragonite). Less commonly, speleothems are made of calcium sulfate (gypsum or mirabilite) or opal. Speleothems of pure calcium carbonate or calcium...

paleontologist Karl Mayer-Eymar (1826–1907) studied fossils embedded between gypsum-bearing, brackish, and freshwater sediment layers, and identified them as...

Chugwater Formation to form the Nugget Sandstone. The Nugget in turn was buried by the deposits of thin red shale and thick gypsum of the Gypsum Springs Formation...

Formation Paleogene Goose Egg Formation Permian Green River Formation Paleogene Gros Ventre Formation Cambrian Gypsum Springs Formation Jurassic Hailey Shale...

formation shaped by the dissolution of a layer or layers of soluble bedrock, usually carbonate rock such as limestone or dolomite, but also in gypsum...