lacustrine soil

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• Lacustrine plain — A Lacustrine plain is a plain that originally formed in a lacustrine environment, that is, as the bed of a lake, but from which the water has disappeared, by natural drainage, evaporation or other geophysical processes. The soil of the plain left …   Wikipedia

• Mexico City — a city in and the capital of Mexico, in the central part. 8,906,000; ab. 7400 ft. (2255 m) above sea level. Official name, México, Distrito Federal /me hee kaw dees tree taw fe dhe rddahl /. * * * Spanish Ciudad de México City (pop., 2000: city,… …   Universalium

• till-floored lake plain —    [ soil survey ]    A glaciated land area that has characteristics of a till plain, but that was also inundated by a glacial lake. The area possesses a gently undulating till topography, rather than a distinctive, low relief lake plain surface …   Glossary of landform and geologic terms

• Parent material — Parent material, in soil science, means the underlying geological material (generally bedrock or a superficial or drift deposit) in which soil horizons form. Soils typically get a great deal of structure and minerals from their parent material.… …   Wikipedia

• Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

• Geography of Ethiopia — Map of Ethiopia. Satellite image of Ethiopi …   Wikipedia

• Pleistocene Epoch — Earlier and longer of the two epochs that constitute the Quaternary Period. The Pleistocene began с 1.8 million years ago and ended с 10,000 years ago. It was preceded by the Pliocene Epoch of the Tertiary Period and followed by the Holocene… …   Universalium

• sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

• Ecology of the Sierra Nevada — See Sierra Nevada for general information about the mountain range in the United States. The Ecology of the Sierra Nevada, located in the U.S. state of California, is diverse and complex: the plants and animals are a significant part of the… …   Wikipedia

• Carolina Bay — Carolina bays are elliptical depressions concentrated along the Atlantic seaboard within coastal Delaware, Maryland, New Jersey, North Carolina, South Carolina, Virginia, Georgia, and northcentral Florida (Prouty 1952, Kaczorowski 1977). In… …   Wikipedia

• Marl — For other uses see Marl (disambiguation). For the red algal growth form, see Maerl. Exposure of marl from the Matmor Formation (Jurassic) of southern Israel …   Wikipedia