Although the sky was stormy, the most moisture we got was a few flakes of snow. We took a long weekend and drove the Owyhee Uplands Backcountry Uplands Byway through the southwestern corner of Idaho. Rogenstein is a term describing a specific type of oolite in which the cementing matter is argillaceous.Good gravel road, fantastic high desert country, amazing stormy sky. Oolites also appear in the Cambrian age Conococheague limestone, in the Great Appalachian Valley in Pennsylvania, Maryland, West Virginia, and Virginia. Many of the buildings on the Indiana University campus in Bloomington are built with native oolitic limestone material, and the Soldiers' and Sailors' Monument in downtown Indianapolis, Indiana, is built mainly of grey oolitic limestone. landmarks as the Empire State Building in New York and the Pentagon in Arlington, Virginia. Quarries in Oolitic, Bedford, and Bloomington contributed the materials for such iconic U.S. The town of Oolitic, Indiana, was founded for the trade of limestone and bears its name. This type of limestone is also found in Indiana in the United States. The physical and chemical properties of the Shoofly Oolite are the setting for a suite of rare plants, which the BLM protects through land use management and on-site interpretation. The Shoofly Oolite lies on public land west of Bruneau, Idaho managed by the Bureau of Land Management. The other sediments eroded away, while the more resistant oolite weathered into hummocks, small arches and other intriguing natural shapes. When the lake drained (2 to 4 million years ago), the oolite was left behind, along with siltstone, volcanic tuffs and alluvium from adjacent mountain slopes. Wave action in the lake washed sediments back and forth in the shallows on the southwestern shore, forming ooids and depositing them on steeper benches near the shore in 2- to 40-foot thicknesses. Ten million years ago, the plain formed the bed of Lake Idaho. One of the world's largest freshwater lakebed oolites is the Shoofly Oolite, a section of the Glenns Ferry Formation on southwestern Idaho's Snake River Plain. The material consolidated and eroded during later exposure above the ocean surface. A particular type, Bath Stone, gives the buildings of the World Heritage City of Bath their distinctive appearance.The islands of the Lower Keys in the Florida Keys, as well as some barrier islands east of Miami bordering Biscayne Bay, are mainly oolitic limestone, which was formed by deposition when shallow seas covered the area between periods of glaciation. Some exemplar oolitic limestone, a common term for an oolite, was formed in England during the Jurassic, and forms the Cotswold Hills, the Isle of Portland with its famous Portland Stone, and part of the North Yorkshire Moors. The size of the oolite reflects the time they have had exposed to the water before they were covered with later sediment. The oolites are commonly found in large current bedding structures that resemble sand dunes. Strong intertidal currents wash the 'seeds' around on the seabed, where they accumulate layers of chemically precipitated calcite from the supersaturated water. The mechanism of formation starts with a small fragment of sediment acting as a 'seed', e.g. They are usually formed in warm, supersaturated, shallow, highly agitated marine water intertidal environments, though some are formed in inland lakes. Oolitic hematite occurs at Red Mountain near Birmingham, Alabama, along with oolitic limestone. Dolomitic and chert ooids are most likely the result of the replacement of the original texture in limestone. The term oolith can refer to oolite or individual ooids.Ooids are most commonly composed of calcium carbonate (calcite or aragonite), but can be composed of phosphate, clays, chert, dolomite or iron minerals, including hematite. Strictly, oolites consist of ooids of diameter 0.25–2 mm rocks composed of ooids larger than 2 mm are called pisolites. The name derives from the Ancient Greek word for egg. Oolite or oölite (egg stone) is a sedimentary rock formed from ooids, spherical grains composed of concentric layers.
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