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The Tioga Bentonites are a series of ash bed layers occurring in three Sedimentary basins in the eastern and midwestern United States. The primary basin they are found in is the Appalachian Basin, as well as the Illinois Basin and the Michigan Basin. Due to an unconformity these ash beds are not present in the southern Appalachians. [1]
The volcanic eruption that produced the Deicke K-bentonite bed which has been dated to 457.1 ±1.0, which was calculated using a concordant uranium-lead dating zircon fraction. [2] The Deicke and Millbrig eruptions have a minimal estimation of 600,000 km 2 (230,000 sq mi) covered and at least 1,122 km 3 (269 cu mi) of pre-compaction bentonite ...
Bentonite layers from an ancient deposit of weathered volcanic ash tuff in Wyoming Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado). Bentonite (/ ˈ b ɛ n t ə n aɪ t / BEN-tə-nyte) [1] [2] is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite.
The Tioga ash beds contain bentonite clay which presents a landslide hazard in the unexcavated rock as well. [ 66 ] Damage to structures constructed on fill consisting of pyritic Marcellus shale has been caused by expansion from sulfuric acid (H 2 SO 4 ) runoff reacting with the calcite (CaCO 3 ) in the shale to produce gypsum (CaSO 4 ), which ...
The lake is an impoundment of Mud Run, a tributary of Bermudian Creek, the water of which flows via Conewago Creek to the Susquehanna River and eventually Chesapeake Bay. According to the United States Census Bureau , the community has a total area of 1.7 square miles (4.5 km 2 ), of which 1.3 square miles (3.4 km 2 ) is land and 0.42 square ...
This is a list of U.S. state soils.A state soil is a soil that has special significance to a particular state.Each state in the United States has selected a state soil, twenty of which have been legislatively established.
As of the census [7] of 2000, there were 2,842 people, 998 households, and 784 families residing in the township. The population density was 58.2 inhabitants per square mile (22.5/km 2).
Saltsburg is located at the confluence of the Conemaugh River and Loyalhanna Creek, which form the Kiskiminetas River.. According to the United States Census Bureau, the borough has a total area of 0.2 square miles (0.52 km 2), of which 0.2 square miles (0.52 km 2) is land and 0.04 square miles (0.10 km 2) is water.
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