Loess is a recent deposit of silt or material which is usually yellowish or brown in colour and consisting of tiny mineral particles brought by wind to the places where they now lie. Today this region is called the Palouse and the distinctive deep, rich soil is known as Palouse Loess. Geography is the study of places and the relationships between people and their environments. The Loess Plateau is a plateau or high plain that covers more than 250,000 sq mi in the middle and upper reaches of the Yellow River in China. Loess is known locally as "sugar clay" because it can be extremely hard when dry, but when wet, loses all cohesion. LOESS and LOWESS (locally weighted scatterplot smoothing) are two strongly related non-parametric regression methods that combine multiple regression models in a k-nearest-neighbor-based meta-model. It is mostly created by wind, but can also be formed by glaciers. Looking for online definition of LOESS or what LOESS stands for? Loess is, in fact, the heaps of unconsolidated fine materials. If you have access to a journal via a society or association membership, please browse to your society journal, select dune. Loess has an internal cohesion that allows it great vertical durability, though it can be easily eroded. Loess is extremely porous, and the surface is consequently dry. loess: a fine-grained windblown silt that is characteristic of temperate areas where thick layers of it were distributed during the retreat of the ice after the last glaciation. Since that time it has become an enduring standard among sedimentologists and sedimentary petrologists, along with the Shepard sediment classification. Plates can slowly and continuously move against each other or can build up stress and suddenly jerk. 6. loess, Question 2. Geography Quizzes » Physical Geography Trivia ... loess. In some parts of the world, windblown dust and silt blanket the land. What is the definition of loess in geography?Loess is an aeolian sediment formed by the accumulation of wind-blown silt, typically in the 20–50 micrometer size … lake. loess (lĕs, lō`əs, Ger. Start studying Geography Final- Chapter 11 East Asia. The loess is also home to the Giant Palouse earthworm. Types 4. Loess is the most impor­tant member of this group. The common definition of loess ignores a set of processes that start during and after the subaerial deposition of silt. Pronunciation: (lō'es, les, lus), — n. a loamy deposit formed by wind, usually yellowish and calcareous, common in the Mississippi Valley and in Europe and Asia. Also referred to as the Huangtu Plateau, the plateau encompasses the following provinces: Gansu, Shanxi, Shaanxi, Ningxia, and the autonomous region of Inner Mongolia.Over 50 million people live on or are dependent on the plateau, which was … [2] Geography NEXT> 9. The soil in this region is commonly known to be the “most highly erodible soil on earth” (1). Find definitions for: lo•ess. Brush up on your geography and finally learn what countries are in Eastern Europe with our maps. Sudden movements like earthquake do not cause mass destruction. Locations of Large Loess Deposits. Thus, loess is easily eroded away. In geography, usually refers to humans living beyond 60 years of age. doldrums. Loess is not known to be forming at present and is associated with the Pleistocene. n. ... All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Wearing away of the land by different agents like water, wind and ice is … The only comparable deposits of loess to such an extent are located in Shaanxi, China. A fine, windblown material that was deposited on the plateau during the ice age. Loess . ... loess: Meaning and Definition of. The only comparable deposits of loess to such an extent are located in Shaanxi, China. ... What is the definition of the "ideographic" way of Chinese writing? The soil can hold 10% to 15% concentration of water, and has a porosity ranging from 34% to 60% depending on whether the loess is richer in clay or sand. Longevity - lit. The Loess Hills of Iowa are remarkable for the depth of the drift layer, often more than 90 feet (27 m) deep. Eroding soils of the Loess Plateau. While substrates, such as unconsolidated sediments (e.g. A steady up (crest) and down (trough) movement of surface water are called waves. drift. Loess is an aeolian (windborne) sediment being an accumulation of: twenty percent or less clay and the balance mainly equal parts sand and silt typically from 20 to 50 micrometers per particle often loosely cemented by calcium carbonate.It is usually homogeneous and highly porous and is traversed by vertical capillaries that permit the sediment to fracture and form vertical bluffs. loess (lĕs, lō`əs, Ger. These winds carry material away and deposit it elsewhere across wide areas to form loess deposits which are easily weathered into well-drained, fertile soils. Definition of Loess. ... thesaurus, literature, geography, and other reference data is for informational purposes only. What is the fan-shaped plain at the mouth of the river? These are soft and porous rocks. Geography There is general absence of laminae and layers in the loessic formation. Loess soil synonyms, Loess soil pronunciation, Loess soil translation, English dictionary definition of Loess soil. Definition Either of two times of the year when the sun is at its greatest distance from the celestial equator. See more. formed on soil, loess, sand, rocks and other substrates, differing in physical and chemical properties. delta. Mudflow definition, a flow of mixed earth debris containing a large amount of water. Parts of a Fold 3. Engineering Considerations. The summer solstice in the Northern Hemisphere occurs about June 21, when the sun is in the zenith at the tropic of Cancer; the winter solstice occurs about December 21, when the sun is over the tropic of Capricorn. Geographers explore both the physical properties of Earth’s surface and the human societies spread across it. 3. The Loess Hills of Iowa are remarkable for the depth of the drift layer, often more than ninety feet deep. When talking about earthquakes being along fault lines, a fault lies at the major boundaries between Earth's tectonic plates, in the crust, and the earthquakes result from the plates' movements. This layer of fine, mineral-rich material is called loess. Loess is known locally as "sugar clay" because it can be extremely hard when dry, but when wet, loses all cohesion. Definition of Fold: It is frequently seen that the strata forming the earth’s crust have been not only tilted out of the horizontal but also bent and buckled into folds. swamps. The term loess refers to the deposits of fine silt and porous sand over a vast region. Definition of Fold 2. lös), unstratified soil deposit of varying thickness, usually yellowish and composed of fine-grained angular mineral particles mixed with clay.It is found in many regions of the world and is probably related to the chernozem chernozem or black earth, … Loess Plateau, Chinese (Pinyin) Huangtu Gaoyuan or (Wade-Giles romanization) Huang-t’u Kao-yüan, highland area in north-central China, covering much of Shanxi, northern Henan, Shaanxi, and eastern Gansu provinces and the middle part of the Huang He (Yellow River) basin. 4. Write whether the given statements are true or false: 1. lös), unstratified soil deposit of varying thickness, usually yellowish and composed of fine-grained angular mineral particles mixed with clay.It is found in many regions of the world and is probably related to the chernozem chernozem or black earth, … A fault is a fracture in rock where there has been movement and displacement. "LOESS" is a later generalization of LOWESS; although it is not a true initialism, it may be understood as standing for "LOcal regrESSion". long life. sand), and sedimentary, metamorphic or magmatic rocks are provided with a clear definition of their struc-ture and genesis, this is not the case with the loess substrate. Loess formation - definition. Loess is a mineral, aeolian deposit with a range of definitions in literature, which class it as either a sediment, soil, or rock. loess A layer of fine, mineral-rich material made of windblown dust and silt which blankets the land. Loess are firm when they are dry but can crumble and collapse when soaked with water. They also examine how human culture interacts with the natural environment and the way that locations and places can have an impact on people. Robert Folk first published this diagram, along with the system of sediment classification it represents, in 1954. Water can easily infiltrate in the loessic deposits. Jilbert, John Geography Basic Facts ( 1983 ) Then suddenly , beyond Linxia, the loess hills have gone , and our valley steepens into stone . Some classic texts suggest that “loess is not just the accumulation of dust” [1], and it must include additional processes such as loessification, calcification, pedogenesis, and in-situ weathering. Extensive loess deposits are found in Northern and Western China, the Pampas of Argentina, in Ukraine and in the Mississippi Valley of the United States. loess a fine-grained windblown silt that is characteristic of temperate areas where thick layers of it were distributed during the retreat of the ice after the last glaciation. The photo above is a typical roadcut in Southeastern Washington showing the depth, color and stratification of the Palouse loess. ADVERTISEMENTS: After reading this article you will learn about:- 1. 2. The Loess Plateau spans over 640,000 km² in the upper and middle reaches of the Yellow River. Looking for online definition of LOESE or what LOESE stands for? is a geography of loess opinion. What is Loess? Loess, a highly erosion-prone soil that is susceptible to the forces of wind and water, has been deposited by wind storms on the plateau over many years. LOESS is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms. NEXT> 10. Wave . Loess covers about 10% of the Earth’s surface, and about 30% of the coterminous U.S. (Great Plains). Learn vocabulary, terms, and more with flashcards, games, and other study tools. Access to society journal content varies across our titles. What is a shallow body of water separated from a larger body of water by barrier islands or reefs? […] You’ll often see tall vertical cliffs as erosional features, and humans have made their homes in these cliffs by digging cavities into them. Deposition is breaking up of rocks on the earth’s surface. Recognition 5. As a large geographical unit, “Loess Plateau” is defined as the highland area with thick loess deposit, covering about 380,000 km 2. The “most highly erodible soil on earth” ( 1 ) is at its greatest distance from the celestial.. 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