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Caliche fossil forest on San Miguel Island, California. Caliche (/ k ə ˈ l iː tʃ iː /) (unrelated to the street-slang "Caliche" spoken in El Salvador) is a soil accumulation of soluble calcium carbonate at depth, where it precipitates and binds other materials—such as gravel, sand, clay, and silt.
The mansion changed purposes on November 15, 1979, when James and Delois Coker bought it and opened the Chemical Dependency Treatment Center of Austin. It served as a drug and alcohol rehabilitation center for twenty years, although the name changed to the Faulkner Parkside Lodge of Austin and then the Austin Recovery Center .
Henry Gault, from whom the site takes its name, put together a 250-acre farm in the Buttermilk Creek Valley, starting in 1904. At some point in the early 20th century he found extra income as an informant for early archaeological explorations in Central Texas working with the first professional archaeologist in Texas, J.E. Pearce, as well as avocational archaeologists (Alex Dienst, Kenneth ...
In soil science, agriculture and gardening, hardpan or soil pan is a dense layer of soil, usually found below the uppermost topsoil layer. [1] There are different types of hardpan, all sharing the general characteristic of being a distinct soil layer that is largely impervious to water. Some hardpans are formed by deposits in the soil that fuse ...
Synthetic polymers began replacing other chemical binders for soil stabilization in agriculture in the late 20th century. [1] Compared to traditional chemical binders, polymer soil additives can achieve the same amount of strengthening at much lower concentrations – for example, mixtures of 0.5-1% of various biopolymers have strength levels that match or exceed those of 10% cement mixtures ...
The Texas Blackland Prairies are a temperate grassland ecoregion located in Texas that runs roughly 300 miles (480 km) from the Red River in North Texas to San Antonio in the south. The prairie was named after its rich, dark soil. [3] Less than 1% of the original Blackland prairie vegetation remains, scattered across Texas in parcels. [4]
Despite pressure to move to segregated east Austin, Clarksville retained its African-American identity throughout the 20th century. Residents of Clarksville began requesting Austin city funds for the improvement and preservation in 1964, but dirt streets crossed the area until 1975, and a creek carrying sewage periodically flooded homes.
Michael R. Waters from Texas A&M University along with a group of graduate and undergraduate students began excavating the Debra L. Friedkin Site in Bell County, Texas in 2006. The site is located 250 metres (820 ft) downstream along Buttermilk Creek from the Gault site ; a Paleo-Indian site excavated in 1998 and found to have deeply stratified ...