What are dunes and loess? (Geological Science) a light-coloured fine-grained accumulation of clay and silt particles that have been deposited by the wind. Albian A type of schist found in Maury, Roussillon. Environment Dictionaries. It is used for making brick (adobe) and cement and as a filler for levees and dams. Properties of Loess. Loess is mostly created by wind but can also be formed by glaciers. Most loess is believed to have originated during the Pleistocene Epoch from areas of land covered by glaciers and from desert surfaces. A daily challenge for crossword fanatics. When you reach out to him or her, you will need the page title, URL, and the date you accessed the resource. (ls, ls, ls) A very fine grained silt or clay, thought to be deposited as dust blown by the wind. The soils types include shell-limestone, keuper, marl, Soils here are very heterogenous with thick, When the tunnel was first dug, the ice held the, 'Dunderhead' and Other Nicer Ways to Say Stupid, 'Pride': The Word That Went From Vice to Strength. REFERENCES https://medical-dictionary.thefreedictionary.com/Loess+soil, Usowicz, "Evaluation of soil-loss contribution areas on, Because of the interaction between moisture and air, the unsaturated infiltration properties of, (2008) found that K was overestimated by Eqn (1) for, Seasonal variations in rill erodibility for a, Soil type at the Shouyang site is Chestnut-Cinnamon, Observations on earthworm channels and infiltration on tilled and untilled, Silicon release during NaOH extraction of all, Corn grain yield response to topsoil depth on deep, Not so with the shrubs that struggle to survive outside the watershed in the semi-arid, loose, Plant response to topsoil thickness on an eroded, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, The effect of land use change on transformation of relief and modification of soils in undulating loess area of east Poland, Field Experiment on Soaking Characteristics of Collapsible Loess, Soil erodibility affected by vegetation restoration on steep gully slopes on the Loess Plateau of China, Temporal variability in rill erodibility for two types of grasslands, Traffic and tillage effects on runoff and soil loss on the Loess Plateau of northern China, Water infiltration rates following reintroduction of Lumbricus terrestris into no-till fields, Testing a new method for sequential silicon extraction on soils of a temperate--humid climate, Field-scale watershed evaluations on deep-loess soils: I. Topography and agronomic practices, Runoff and sediment yield under simulated rainfall on hillslopes in the Loess Plateau of China, Effects of zeolite application on nitrate and ammonium retention of a loamy soil under saturated conditions, Soil erosion - crop productivity relationships for six Alberta soils, Loewenstein Occupational Therapy Cognitive Assessment, Loffler parietal fibroplastic endocarditis. The American Heritage Student Science Dictionary, Second Edition. When the route passes through hillsides of watershed, attention shall be paid to find out that whether there is unstable section of active gully region. These soils are commonly on loess hills and less commonly on outwash plains. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Loess can be described as a rich, dust-like soil. 4. Very difficult. Soils here are particularly complex, featuring chalk, sand, gravel, clay. The geographic feature of China known as the Loess Plateau takes its name from loess, the term for deposits of fine-grained, yellowish, windblown soil.Loess is distributed throughout many areas of northern China, but the greatest concentrations of loess are found in central China north of the Qin Mountains along the middle reaches of the Huang He (Yellow River). For information on user permissions, please read our Terms of Service. [ 1] A variety of grain-size analyses show that this . What does loess mean? Loess (soil) Definition from Society & Culture Dictionaries & Glossaries. Loess are typically a kind of clayey silt, and the silt content (0.005-0.05 mm) is generally greater than 50%. Pastoralist people who raise livestock for subsistence purposes. Pronunciation of Loess soil with 1 audio pronunciations. I. Smalley, I. Obreht. Loess a fertile, silty soil deposited by the wind, is plentiful in this region and in a fw favored areas winter precipitation is high enough to allow for rain-fed agriculture. To cover, smear, or fill with loam. In some parts of the world, windblown dust and silt blanket the land. Information and translations of loess in the most comprehensive dictionary definitions resource on the web. loess. Loess form when the wind deposits clay and silt. Soaked and loaded loess, however, is liable to collapse and slumping. [ noun ] (geology) a fine-grained unstratified accumulation of clay and silt deposited by the wind. Definition of. Definition of loess. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Such soils are highly susceptible to water erosion. Send us feedback. ls), unstratified soil deposit of varying thickness, usually yellowish and composed of fine-grained angular mineral particles mixed with clay.It is found in many re In parts of China, residents build cave-like dwellings in thick loess cliffs.Extensive loess deposits are found in northern China, the Great Plains of North America, central Europe, and parts of Russia and Kazakhstan. Earth Science, Geography, Physical Geography. The Rights Holder for media is the person or group credited. OR .particles are picked up by turbulent eddies in wind and may be carried for hundreds of . Pastoralist. Loess is homogeneous, porous, friable, pale yellow or buff, slightly coherent, typically non- stratified and often calcareous. Santosa. a fine-grained unstratified accumulation of clay and silt deposited by the wind She or he will best know the preferred format. Loess soil is homogeneous and is also highly porous. Vulnerable to water erosion. loess soil translation in English - English Reverso dictionary, see also 'loss',loessal',less',loessial', examples, definition, conjugation Slopes range from 0 to 60 percent. mineral noun inorganic material that has a characteristic chemical composition and specific crystal structure. 1996 - 2022 National Geographic Society. Find 38 ways to say LOESS, along with antonyms, related words, and example sentences at Thesaurus.com, the world's most trusted free thesaurus. Geologos. It is stable, however, as long as it remains dry. Coarse silt particles (10-50 m in diameter) make 40-70% of typical loess by weight. Albero Synonymous with albariza. Very easy. Loess is mostly created by wind, but can also be formed by glaciers. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Till Niermann. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. In some parts of the world, windblown dust and silt blanket the land. W. G. Hale, V. A. Saunders, J. P. Margham 2005 Want to thank TFD for its existence? Collins Dictionary of Biology, 3rd ed. The porosity of loess is 4055 percent; it is traversed by narrow tubes (macro-pores, traces of plant remains). Loess (pronounced "luss"), is German for loose or crumbly. Soil; Anagrams for loess . (redirected from loessal) Also found in: Dictionary, Thesaurus, Encyclopedia . 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. It has evolved through . Loess is the parent rock of chernozem and sierozem soil. If you have questions about how to cite anything on our website in your project or classroom presentation, please contact your teacher. https://www.thefreedictionary.com/Loess+soil. loess soil. Environmental Engineering (English ver.) Growing wheat and other crops on steep (45 to 60 percent) slopes is common on the deep, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Field Experiment on Soaking Characteristics of Collapsible Loess, Traffic and tillage effects on runoff and soil loss on the Loess Plateau of northern China, Field-scale watershed evaluations on deep-loess soils: I. Topography and agronomic practices, Effects of zeolite application on nitrate and ammonium retention of a loamy soil under saturated conditions, Least limiting water range: a potential indicator of physical quality of forest soils, Effects of erosion on soil chemical properties in the north central region of the United States, Influence of topsoil removal on soil fertility and barley growth, Influence of Pressure and Water Content on Loess Collapsibility of the Xixian New Area in Shaanxi Province, China./Influencia de la presion y el contenido de agua sobre el indice de colapsabilidad de loess, en el distrito especial Xixian, provincia de Shaonxi, China, Experimental Analysis and Discussion on the Damage Variable of Frozen Loess, Trace elements distribution in the soil profiles of Peshawar, Limited influence of tillage management on organic matter fractions in the surface layer of silt soils under cereal-root crop rotations. It was first applied to the soil type along the Rhine River. Bikini, bourbon, and badminton were places first. Moderate. LOESS combines much of the simplicity of . Often used to describe the march of time, what does. The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit. Loess is the source of most of our Nation's rich agricultural soils and is common in the U.S. and around the world. Definition of loess : an unstratified usually buff to yellowish brown loamy deposit found in North America, Europe, and Asia and believed to be chiefly deposited by the wind Other Words from loess Example Sentences Learn More About loess Other Words from loess loessial \ le- s- l , l- , l- e- , lr- \ adjective sand and loess soils exposed to wind erosion; EurLex-2. The major grain-size fraction of loess is from 0.02 to 0.05 mm, known as the loess fraction that includes granules of medium-grained dust. Abstract Loessification is a process by which a body of non-loess ground is transformed into a body of loess ground. Aeolian soil Sediments deposited by wind (eg, loess). It occurs in the form of a blanket from several meters to 50100 m thick on water divides, slopes, and ancient valley terraces. Modern regression methods are designed to address situations in which the classical procedures do not perform well or cannot be effectively applied without undue labor. This layer of fine, mineral-rich material is called loess. Loess soil: Ukrainian translation, meaning, synonyms, antonyms, pronunciation, example sentences, transcription, definition, phrases These particles include sand crystals made of quartz or mica. Loess is commonly defined as an accumulation of windblown silt, covering more than 10% of the earth's surface, mainly in the earth's temperate zone ( Pye, 1995, Pcsi and Richter, 1996, Muhs and Bettis, 2003 ). Meaning of loess. To save this word, you'll need to log in. This sediment becomes loess.Loess ranges in thickness from a few centimeters to more than 91 meters (300 feet). is that alluvium is soil, clay, silt or gravel deposited by flowing water, as it slows, in a river bed, delta, estuary or flood plain while loess is (geology) any sediment, dominated by silt, of eolian (wind-blown) origin. When glaciers grind rocks to a fine powder, loess can form. The American Heritage Student Science Dictionary, Second Edition. mica noun type of mineral that can be split into thin, see-through sheets. loess [ l s, ls, ls ] A very fine grained silt or clay, thought to have formed as the result of grinding by glaciers and to have been deposited by the wind. organic adjective Loss or Losses means all losses, damages, liabilities, deficiencies, claims, actions, judgments, settlements, interest, awards, penalties, fines, costs or expenses of whatever kind, including reasonable attorneys' fees and the costs of enforcing any right to indemnification hereunder and the cost of pursuing any insurance providers. Loess can be made up of silt and loamy particles up to 50% and of clay particles up to 10%. Test your knowledge - and maybe learn something along the way. Loess - a uniform aeolian deposit of silty material having an open structure and relatively . The depth of a gully can reach tens of meters. Delivered to your inbox! It generally occurs in arid, semi-arid and semi-humid regions, mainly due to excessive depletion of deep soil water by vegetation, evapotranspiration and scarce precipitation recharge over a long. You cannot download interactives. [5] Match all exact any words . Wind erosion can be prevented by keeping the ground covered with plants. They help hold the soil in place. Loess soils are among the most fertile in the world principally because the abundance of silt particles ensures a good supply of plant-available water good soil aeration extensive penetration by plant roots and easy cultivation and seedbed production. Accessed 4 Nov. 2022. 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. Albariza White-surfaced soil formed by diatomaceous deposits, found in southern Spain. unstratified, homogeneous, calcareous sedimentary deposit, light yellow or buff in color. 1. The loess has intercalations with a clearly expressed soil profile, that is, buried soils that testify to the existence of warmer and wetter periods (interglacials) than the time during which the loess formed (ice ages). Most loess is believed to have originated during the Pleistocene Epoch from areas of land covered by glaciers and from desert surfaces. Loess is the parent rock of chernozem and sierozem soil. As nouns the difference between alluvium and loess. What's the difference between loam and loess? Mean annual temperature is about 13 degrees C (56 degrees F), and mean annual precipitation is 1068 mm (42 inches). i.) When glaciers grind rocks to a fine powder loess can form. Loam Soils loess noun windblown soil or silt. What is a loess made out of? Examples Stem. If no button appears, you cannot download or save the media. National Geographic Headquarters 1145 17th Street NW Washington, DC 20036, National Geographic Society is a 501 (c)(3) organization. The thickest loess deposits are near the Missouri River in the U.S. state of Iowa and along the Yellow River in China.Loess accumulates, or builds up, at the edges of deserts. The features of loess make it to be the most fertile soil among all the other types. Unlike other soils, loess is pale and loosely packed. A fine-grained, yellowish-brown, extremely fertile loam deposited mainly by the wind and found widely in North America, Asia, and Europe. Loess is a German word meaning loose. The history of loessification is one of controversy and confrontation, largely. The formation of loess ground by the process of loessification: a history of the concept. The Loess ( / lo.s /, / ls /, or / ls /) Hills are generally located between 1 and 15 miles (24 km) east of the Missouri River channel. Also popular are theories of the eolian (V. A. Obruchev), pedogenic (L. S. Berg), and polygenetic (eolian, deluvial, and pedogeniceluvial processes occurring in an arid climate) origin of loess. Loess is mostly created by wind, but can also be formed by . Some experiments in dryland farming of wheat began as early as the 1840s. If a media asset is downloadable, a download button appears in the corner of the media viewer. Sources can be local or distant, resulting in local variations in loess. When blown by the wind, these sediments are referred to as. A certain quantity of particles 0.010.05 mm in size is represented by aggregates formed during the coagulation of the colloidal part of the sediment. Collins Dictionary of Biology, 3rd ed. Its formation has been associated with different geological processes (on land with the activity of wind, rainwater and snow meltwater, soil formation and weathering, volcanism, the settling of cosmic dust, and sedimentation in lakes and seas) as well as stages of rock formation. Most loess is believed to have originated during the Pleistocene Epoch from areas of land covered by glaciers and from desert surfaces. TAXONOMIC CLASS:Fine-silty, mixed, superactive, mesic Ultic Hapludalfs Missouri River noun (4,382 kilometers/2,723 miles) river in the western United States. It is full of minerals and drains water very well. Loess is a kind of fine dirt or dust that's made up of silt, sand, and clay. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. In Louisiana, loess is common in East and West Feliciana Parishes, along with Franklin Parish on the Macon Ridge. Geology. It is easily tilled, or broken up, for planting seeds. LOESS (PRONOUNCED "LUSS") is a very fine light soil, often buff, yellow, or gray in color. A buff to gray windblown deposit of fine-grained, calcareous silt or clay. (v. As nouns the difference between loam and loess is that loam is a type of soil; an earthy mixture of sand, silt and clay, with organic matter to which its fertility is chiefly due while loess is (geology) any sediment, dominated by silt, of eolian (wind-blown) origin. Typical loess (so called " primary loess ") usually has a yellow or pale yellow color. Loess is relatively well-sorted clastic sediment that is homogeneous, porous and slightly altered. In some interlayers there are many grains of volcanic ash that has been carried by the wind for hundreds of kilometers from the site of eruption. After wetting, the loess is often compacted under the pressure of its own weight or the weight of structures, and the ground subsides, which can cause severe damage to structures. 2018. "loose" (compare German los, from Proto-Germanic *lausaz, from PIE root *leu-"to loosen, divide, cut apart." A example of loess is the clay and loam rich soil of Russia. Study with Quizlet and memorize flashcards containing terms like Loess has a very low content of what size of mineral particles?, 2 Ways that organic matter has an influence on soil development?, What are the 5 soil forming factors? ess (ls, ls, ls) A very fine grained silt or clay, thought to be deposited as dust blown by the wind. yellowish and calcareous deposit formed by wind, common in the Mississippi Valley and in Europe and Asia. As the distance from the source increases, the grains size deposited decreases. Sometimes calcareous concretions (loess dolls, lime nodules), the shells of terrestrial mollusks, and the bones of mammals, particularly rodents and mammoths, are encountered in the loess. 0 rating. A surface depression or hollow commonly found in arid and semiarid regions caused by wind erosion. Streams carry the powder to the end of the glacier. Soil organic carbon on the fragmented Chinese Loess Plateau: combining effects of vegetation types and topographic positions. Definition of loess in the Definitions.net dictionary. . An essentially unconsolidated, unstratified calcareous silt; commonly it is homogeneous, permeable, and buff to gray in color, and contains calcareous concretions and fossils. a light-coloured fine-grained accumulation of clay and silt particles that have been deposited by the wind, (2007), for instance, reported significant no tillage and residue cover effects (reducing runoff and soil loss by 34% and 62%, respectively) from rainfall simulation experiments in the drier western loess areas of Gansu province, and Liang (1997) showed the effectiveness of cover in protecting the, Xiubin H, Zhanbin H (2001) Zeolite application for enhancing water infiltration and retention in, These were a pumice (loamy sand), argillite (loam), ash (sandy clay loam), and, Plant response to topsoil thickness and to fertilizer on an eroded, Plant response to topsoil thickness on uneroded, Characteristics of the development of collapse in, In contrast, the total content of Cd, Cr, Mn and Zn was found to be significantly greater (p<0.05) in piedmont soils than alluvium and, Reduced tillage increased OC and N content of the surface soil layer (0-100 mm) in 6 of 7 silt. Loess is a rather ill-consolidated sediment of low compressive strength. noun 0 0 (geology) Any sediment, dominated by silt, of eolian (wind-blown) origin. Particles 0.010.05 mm in size predominate; clay particles smaller than 0.005 mm are present in an amount of 530 percent. After wetting, the loess is often compacted under the pressure of its own weight or the weight of structures, and the ground subsides, which can cause severe damage to structures. Loess. Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/loess. LOESS is one of many "modern" modeling methods that build on "classical" methods, such as linear and nonlinear least squares regression. In 1877 the German scientist F. Richthofen proved the subaerial origin of Chinese loess (it was formed on land, and water played a limited role). Yellow RiverThe Yellow River gets its name from the yellow loess suspended in the water. Parting surfaces are vertical because capillary incrustations of lime, developed around the roots of a grassy plant cover, lend a vertical texture to loess. salvation army coat drive 2022; wayfair vendor application; spigen ultra hybrid pro ipad mini 6. hotels by the hour melbourne; where to buy cigarettes in disneyland paris 'All Intensive Purposes' or 'All Intents and Purposes'? Major loess deposits are found in Shaanxi, CHINA, in some of the U.S. plains states, notably western IOWA and western NEBRASKa, and some parts of Europe, such as central BELGIUM. The soil data include soil texture (weight of sand, slit, and clay), soil carbon, and bulk density to run the PAWS model (plant available water in soil), and these data were obtained from the field measurements or published paper. 1833 (in Lyell), "unstratified deposit of loam," a special use from 1823 by German mineralogist Karl Csar von Leonhard (1779-1862) of German Lss "yellowish-gray soil," of a type found in the Rhine valley, from Swiss German lsch (adj.) Meaning of loess in English loess noun [ U ] geology specialized uk / l.es / us / lo.es / a type of light brown or greyish soil, consisting of very small pieces of quartz and clay, that is blown and left behind by the wind SMART Vocabulary: related words and phrases Soil aerator alluvial boulder clay clay clayey dirt earthiness earthy frozen Difficult. Generally speaking, the soils are slightly to moderately acidic, owing to the large annual rainfall. ess. There, grass and the roots of other plants trap the dust and hold it to the ground. https://encyclopedia2.thefreedictionary.com/Loess+soil. Any interactives on this page can only be played while you are visiting our website. Wardoyo, S.S. & A.Z.P.B. EurLex-2. The input data of the experimental sites in the United States, Canada, and Europe are obtained from public database. Soil is one of the principal substrata of life on Earth, serving as a reservoir of water and nutrients, as a medium for the filtration and breakdown of injurious wastes, and as a participant in the cycling of carbon and other elements through the global ecosystem. Record the pronunciation of this word in your own voice and play it to listen to how you have pronounced it. Encyclopedic entry. The uppermost loess , the Peoria Loess , in which the modern soil has developed, accumulated during In some parts of the world, windblown dust and silt blanket the land. If you have questions about licensing content on this page, please contact ngimagecollection@natgeo.com for more information and to obtain a license. Alberese A compact clay and limestone found in the Chianti region. Thesaurus: All synonyms and antonyms for loess, Britannica.com: Encyclopedia article about loess. Subscribe to America's largest dictionary and get thousands more definitions and advanced searchad free! Loess usually erodes very slowlyChinese farmers have been working the loess around the Yellow River for more than a thousand years. noun 0 1 and more. The Loess (wind-blown silt) soils in eastern Washington are the top layer of soil that covers the sandy-loam ancient flood soils below. Can you pronounce this word better. In Oregon, one of the favorite soil types for Pinot Noir is a silt-clay soil called Willakenzie. However, the chronological 27 Mid-Late Quaternary loess-paleosol sequence in Lantian's Yushan, China: An environmental magnetism approach and its paleoclimatic significance The question of the origin of loess has still not been finally settled. The wind blows loess around until it settles and, over time, accumulates in one area. The fine particles in the loess consist of various clay minerals (hydromica, kaolinite, and montmorillonite). Loess grains are angular, with little polishing or rounding, and composed of crystals of quartz, feldspar, mica and other minerals. Sand dunes form when the wind deposits sand. This layer of fine, mineral-rich material is called loess. Loess is found in Europe, Asia, North America, and South America, predominantly in the steppe and semisteppe regions of the temperate zone. Href= '' https: //quizlet.com/12359436/loess-flash-cards/ '' > What does material composed of tightly packed grains of quartz or mica Any. 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