- duripan
- кремнезёмистая подпочва
* * *кремнеземистая подпочва
English-Russian dictionary of geology. 2011.
duripan
Смотреть что такое "duripan" в других словарях:
duripan — duripán s. n. Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic … Dicționar Român
Duripan — A duripan is a diagnostic soil horizon of the USDA soil taxonomy that is cemented by illuvial silica into a subsurface hardpan. Similar to a fragipan, petrocalcic horizon and petrogypsic horizon, it is firmly cemented and restricts soil… … Wikipedia
Fragipan — A fragipan is a diagnostic horizon in USDA soil taxonomy. They are altered subsurface soil layers that restrict water flow and root penetration. Fragipans are similar to a duripan in how they affect land use limitations. In soil descriptions,… … Wikipedia
Petrocalcic Horizon — A petrocalcic horizon is a diagnostic horizon in USDA soil taxonomy. They are formed when secondary Calcium Carbonate or other carbonates accumulate in the subsoil to the extent that the soil becomes cemented into a hardpan. Petrocalcic horizons… … Wikipedia
Aridisols — (or desert soils) are a soil order in USA soil taxonomy. Aridisols (from the Latin aridus , for “dry”) form in an arid or semi arid climate. Aridisols dominate the deserts and xeric shrublands which occupy about one third of the Earth s land… … Wikipedia
Duricrust — is a hard layer on or near the surface of soil. Duricrusts can range in thickness from a few millimeters or centimeters to several meters. It is a general term (not to be confused with duripan) for a zone of chemical precipitation and hardening… … Wikipedia
Afforestation — is the process of establishing a forest on land that is not a forest, or has not been a forest for a long time by planting trees or their seeds. The term may also be applied to the legal conversion of land into the status of royal forest.The term … Wikipedia
San Francisco Tetlanohcan — is a town in the Mexican state of Tlaxcala, at the foot of the La Malinche dormant volcano. San Francisco Tetlanohcan has a population of 10,000 inhabitants, and is located about 20 minutes east of the state capital, Tlaxcala,… … Wikipedia
San Joaquin (soil) — San Joaquin is an officially designated state insignia, the State Soil of the U.S. state of California.The California Central Valley has more than 500,000 acres (2,000 km²) of San Joaquin soils, named for the south end of that valley. This series … Wikipedia
Durisols — Distribution of Durisols A Durisol in the FAO World Reference Base for Soil Resources is a very shallow to moderately deep, free draining soil of arid and semi arid environments, that contain cemented secondary silica (SiO2) in the upper metre of … Wikipedia
Andisol — (von der Eigenschaft andic, abgeleitet von jap. an do, ‚schwarzer Boden‘ und lat. sol, ‚Boden‘) ist eine der zwölf Hauptgruppen der USDA Bodenklassifikation, ihr entspricht in der FAO Bodenklassifikation und der World Reference Base for Soil… … Deutsch Wikipedia
