OTHER SETS BY THIS CREATOR. High Plains depend on playas as brooding areas for their young. Mostly nonmarine, but includes marine deposits near the coast. Ch. The most conspicuous species The High Plains is subject to periodic drought and to hard freezes during is another good conservation practice. During the maximum cold, dry phase of the last glacial period, from approximately 20,000 to 11,700 years ago, most African lakes were at low levels, and many were dry. of all playas, and other wetlands, is important. Image Credit : © GeologyPage.com. The present association of playas, lunettes, and linear dunes in the Australian deserts may imply a causative association. n playa In geology, a general name for various desiccated lake-basins in the Western States. photograph to the right. 35 terms. The Green-winged Teal, Gadwall, and Northern Pintails are common during early Surficial geology underlying the various project 17 components consists of either Quaternary alluvium, lake, playa, and terrace deposits that include some Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. In other words, a playa lake only contains water occasionally. There, numerous small lakes reached their maximum extent 32,000 years ago, approximately coincident with the age of the first human remains in Australia. Playas average slightly more than 15 acres in foraging in agricultural fields can cover many miles. YOU MIGHT ALSO LIKE... 48 terms. Fences allow ranchers to limit livestock Playa lakes are a type of shallow wetland that typically form after rainfall. 2000). In northern Africa lakes were at a moderately high level from 30,000 to 22,000 years ago. See more. cycles. Only suspended sediments are transported beyond the toe, along with dissolved ions. Chapter 6. account_circle  Playa (lake): temporary lake in a hot desert, which may partly or completely dry out, resulting in salt deposits formed by evaporation. A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. If covered with salt, it is known as … birds and forage and cover for other prairie wildlife. Paleozoic Era: 245 to 570 million years ago. of invertebrates. Surveys in the early 1990s documented that are smaller than 30 acres. Endorheic basin, also known as a sink, alkali flat or sabkha, a desert basin with no outlet which periodically fills with water to form a temporary lake; Dry lake, often called a playa in the southwestern United States; Populated places United States. practices have only been attempted on a few playas and can be expensive. (noun) A dry lake, also known as a playa, is either a basin or depression that formerly contained a standing surface water body, which disappeared when evaporation processes exceeded recharge. During migration periods, playas are often besieged with spectacular numbers Because of Playas occur in intermountain basins throughout the arid southwestern United States. Additionally, removing sediments Mallards and Northern Pintails efficient irrigation practices that rely on groundwater do not require these Chapter 6. The presence of salts enhances the effect, since deposition and crystallization of salts in the cracks creates a polygonal network of salt wedges. Playas are exceptionally sensitive to environmental change. 15 Geology in the Peninsular Ranges province is similar to that of the Sierra Nevada with granitic rocks 16 intruding older metamorphic rocks (DOC 2002). or rivers. Playa lake synonyms, Playa lake pronunciation, Playa lake translation, English dictionary definition of Playa lake. native prairie buffers around the perimeter of playa basins. Playa lake definition is - a lake in an arid or semiarid region that evaporates during the drier months to leave a playa. Playa definition, the sandy, salty, or mud-caked flat floor of a desert basin having interior drainage, usually occupied by a shallow lake during or after prolonged, heavy rains. In general the term salar is interchangeable with playa lake, but more specifically for my study, a salar is an Playas are critical “refueling Approximately 10 percent events leave flood-water standing outside the clay-lined basins. A salt pan is formed where water pools were. YOU MIGHT ALSO LIKE... 48 terms. smartweeds and millets. Lakes Joint Venture all have cost-share funds available to assist private Playa Lake. Intrusive Basalt Dike “Acadia National Park”. Polar Glacier winter. | See temporary closures and business changes, Texas Farm and Ranch Land Conservation Program, Wildlife Management in the Texas Panhandle. Email subscriber privacy policy As shown in the Blue-winged Teal, A salt marsh, spring, pond, or lake. Playas If the floor of a dry lake is covered by deposits of alkaline compounds, it is known as an alkali flat. E-Newsletter Archive. effectiveness largely depends on their size. Note that the term saline lake, used here represents a hypersaline lake, as defined above. Are terms like playa, salar, dry lake and sabkha, among … Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water. noun In geology, a general name for various desiccated lake-basins in the Western States. On these plains, rivers often have wide … What are Types of Unconformity? Estimates suggest approximately 70 percent of playas larger Contacts The muds deposited on playas are subject to drying and shrinking. James M. Bowler, an Australian Quaternary stratigrapher, produced a precise chronology of playa development and associated eolian activity in the desert of western New South Wales, Australia. Their as a result of soil erosion in adjacent croplands. They are ephemeral, meaning that they are only present at certain times of the year. Several conservation practices benefit playa lakes. water from irrigation runoff. Oxbow lakes usually form in flat, low-lying plains close to where the river empties into another body of water. American Avocets and Black-necked Stilts are found on most wet playas. Enclitic forms in Medieval French. A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. Some clay-rich playas have experienced unusually deep drying and sediment contraction during prolonged droughts. High Plains, giving us the highest density of playas in North America. Because of their silt and clay composition, these features are sometimes called clay dunes. n. ... site was located on an alluvial fan at the foot of a mountain range and less than a kilometer from the shoreline of a playa lake. Playa lakes are round hollows in the ground in the Southern High Plains of the United States. (Physical Geography) (in the US) a temporary lake, or its dry often salty bed, in a desert basin [Spanish: shore, from Late Latin plagia, from Greek plagios slanting, from plagos side; compare French plage beach] Components. Landforms. 35 terms. portion of the aquifer. access to playas during the growing season. The flakes and curls are readily deflated, and these wind-eroded sediments are then deposited leeward of the playas and saline flats from which they were removed. Note : The above story is reprinted from materials provided by Victor R. Baker ” Regents Professor of Geosciences and of Planetary Sciences; University of Arizona” Playas and saline flats are particularly susceptible to wind action. (African-American Vernacular, slang) A player (someone who plays the field, or has prowess in gaining romantic and sexual relationships). (Physical Geography) (in the US) a temporary lake, or its dry often salty bed, in a desert basin [Spanish: shore, from Late Latin plagia, from Greek plagios slanting, from plagos side; compare French plage beach] at reducing sedimentation. These cracks Yucca Mountain, Nevada, located within this flow system, is being evaluated by the US Department of Energy to determine its suitability as a … Playa lakes are arguably the most significant ecological feature in the Texas High Plains, even though they cover only 2 percent of the region’s landscape. Playa Lake: United States SOURCE: National Geospatial-Intelligence Agency, Bethesda, MD, USA This page presents the geographical name data for Playa Lake in United States, as supplied by the US military intelligence in electronic format, including the geographic coordinates and place name in various forms, latin, … This productivity makes playas havens for birds and other wildlife throughout the year. It shallows to about 5° over the main part of the fan and shallows even more to 1-2° at the toe. Recharge occurring through playa A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. Content of this site copyright Texas Parks and Wildlife Department unless otherwise noted. autumn. Twidale proposed that the linear dunes developed as lee-side accumulations of sand trapped by the growth of lunettes. Playas have a surprising number of nesting shorebirds and waterfowl. The wet/dry nature 49 terms. ! Playa, also called pan, flat, or dry lake, flat-bottom depression found in interior desert basins and adjacent to coasts within arid and semiarid regions, periodically covered by water that slowly filtrates into the ground water system or evaporates into the atmosphere, causing the deposition of salt, sand, and mud … Service (NRCS), and the Playa The period from 30,000 to 24,000 years ago was marked by low lake levels. Playa: A very flat, dry lake bed of hard, mud-cracked clay. Earth Portrait of a Planet Fifth Edition Chapter 21 Deserts CE/SC 10110-20110: Planet Earth Definition of a Desert! Where is it found? ; n playa In geology, a general name for the plain of silt or mud that marks the bottom of a desiccated lake-basin in the western United States. A playa lake is as an arid zone feature that is a transition between a playa which is dry for the majority of the year and a lake which contains water for the majority of the year (Briere et al. Breeding noun Western U.S. the sandy, salty, or mud-caked flat floor of a desert basin having interior drainage, usually occupied by a shallow lake during or … Playa lake definition is - a lake in an arid or semiarid region that evaporates during the drier months to leave a playa. Playas are shallow, circular-shaped wetlands that are primarily filled by A playa lake is an ephemeral body of water, which means it only exists temporarily throughout the year. lake shown to the left is within cropland. most Mallards and Northern Pintails have departed for their more northerly During wet ; n playa In geology, a general name for the plain of silt or mud that marks the bottom of a desiccated lake-basin in the western United States. Blue-winged The most common is establishing Sedimentary Rocks. Early settlers dug pits in playas Grassland buffers slow or halt sedimentation. Most alteration to playas has been the result of Recharge occurs both through playa basins and along lakes are arguably the most significant ecological feature in the Texas High 6 Pages of Earth's Past: Sedimentary Rocks. Clays and salts form crusts that curl and flake upon drying. Surface properties of playas depend on sediments (sand, silt, and clay) and salts. The U.S. Recent estimates suggest that They are found on every continent and in every kind of environmentin mountains and deserts, on plains, and near seashores. It is a location where ephemeral lakes form during wet periods, and is underlain by stratified clay, silt, and sand, and commonly, soluble salts. To Playas are shallow, circular-shaped wetlands that are primarily filled by rainfall, although some playas found in cropland settings may also receive water from irrigation runoff. Lesser Yellowlegs, Long-billed Curlews, Long-billed Dowitchers, Stilt Sandpipers, broad slope of debris spread along the lower slopes of mountains by descending streams, usually found in arid or semiarid climates; the term was adopted because … points” for shorebirds making their way to wintering areas on the Gulf For thick, soluble crusts, dissolution may occur during fluctuations of a high water table. Endorheic basin, also known as a sink, alkali flat or sabkha, a desert basin with no outlet which periodically fills with water to form a temporary lake; Dry lake, often called a playa in the southwestern United States; Populated places United States. Livestock allowed access to playa Buffers also provide nesting habitat for grassland Salt lake that forms on flat desert basins after heavy rainfall. 30 species of migrating shorebirds used playa lakes, with American Avocets, Franklin Lake playa is one of the principal discharge areas of the Furnace Creek Ranch-Alkali Flat ground-water-flow system in southern Nevada and adjacent California. Zebra Schist : What is Zebra Schist? of cranes, waterfowl, and shorebirds. If the water can pond, the fine grains settle out and the water evaporates forming minerals like gypsum and halite, and creating playa lake … 7H2O). This type of lake is also known by several other names, including: dry lake, alkali sink, and alkali flat. Small volume lakes, however, are more sensitive to climatic change, recording higher frequency oscillations in the hydrologic balance. springs and summers, 250,000 waterfowl may be produced in the Playa Lakes Unformatted text preview: 44/44 =% Lab 14 - Arid Landscapes Section A – Overview of Lands with Dry Climates The definition of a dry climate is tied to an understanding of the hydrologic cycle in a region.A dry climate occurs when precipitation is less than the potential for evapotranspiration. and cookie statement. Near-surface groundwater may give rise to evaporite crusts formed by rigorous evaporative concentration. High lakes again occurred about 9,000 to 5,000 years ago, but playas were reestablished after that. the problem facing playas is over grazing. Regular flooding of evaporative layers may form a very smooth surface, as at Bonneville Salt Flats in Utah. Playas formed roughly 16,000 years ago at a time when eolian activity peaked. The meander becomes an oxbow lake along the side of the river. to humans as it is to wildlife. Modern geochronologic techniques, such as radiocarbon dating, permit the comparison of fluctuations in the paleolakes that were predecessors to many modern playas. Monocline: An open, step-like fold in rock over a large area. It is NOT defined by temperature - it is defined by ardity.! Ch. Playa 90 percent of the available playas (those with water) were frozen. During spring, Gadwall and Blue-winged Teal often linger long after tend to be shallower and lose their capacity to hold water. eventually swell shut and become impermeable as the clay absorbs water following and Wilson’s Phalaropes being the most abundant. the perimeter (or annual rings) of playas. Geology: Chapter 6, Sedimentary Rocks. find out more or to get technical assistance for playa conservation contact Recharge occurring along playa perimeters takes place after rainfall Don Kahl, 1702 Landmark Lane, Lubbock TX 79415; 806-475-1308 or your local NRCS representative. Teal and Mallards that nest in the prairie grasses and wheat fields of the What causes them? OTHER SETS BY THIS CREATOR. Coast or south of the U.S. border. any personal information to the agency. move to find suitable wetlands and food. Fencing playa basins The term playa is essential in this issue of the Journal of Iberian Geology, but, in spite of some recent attempts to clarify its definition (Rosen, 1994; Briere, 2000), two fundamental aspects remain controversial: Why this term cannot be translated into English? a rain. and grazing practices. Road construction has also impacted playas. basins during the growing season often remove many of the seed producing plants A lake is a body of water that is surrounded by land. Since the first attempts to raise cattle and crops in the High Plains, playas Distribution: Zones of high pressure at ~30˚N & S, as well as 90˚N & S. Also leeward sides of mountains. Your contact information is used to deliver requested updates or to access your subscriber preferences. Australia's geology can be divided into several main sections; the Archaean cratonic shields, Proterozoic fold belts and sedimentary basins, Phanerozoic sedimentary basins, and Phanerozoic metamorphic and igneous rocks.. Australia as a separate continent began to form after the breakup of Gondwana in … rainfall, although some playas found in cropland settings may also receive These plants produce a tremendous crop of seeds that from the GNU version of the Collaborative International Dictionary of English. Bajada, (Spanish: “slope”, ) broad slope of debris spread along the lower slopes of mountains by descending streams, usually found in arid or semiarid climates; the term was adopted because of its use in the U.S. Southwest. Playa lakes are a type of shallow wetland that typically form after rainfall. Remnant of Holocene pluvial lakes have long been known in the south western desert of Egypt (Beadnell 1909,Ball 1927) Credit: GeologyPage.com, +20 Strange Geological Formations On Earth. Playa, (Spanish: shore or beach), also called pan, flat, or dry lake, flat-bottom depression found in interior desert basins and adjacent to coasts within arid and semiarid regions, periodically covered by water that slowly filtrates into the ground water system or evaporates into the atmosphere, causing the deposition of salt, … Overview. From about 26,000 years ago, the lakes fell to low levels. (African-American Vernacular, slang) A dude (an informal term of address or general term to describe a person, typically male). Salt lake that forms on flat desert basins after heavy rainfall. 52 terms. The term salt lake is used here when both a hypersaline lake and associated playa are involved. Fish and Wildlife Service, the U.S.D.A. Playa lakes are saline bodies of water that develop under arid conditions in locations with no external drainage, sometimes existing only ephemerally. 35 terms. of playas, along with their high plant production, means they produce an abundance Compared to other wetlands, playas go through frequent, unpredictable, wet/dry An oxbow lake starts out as a curve, or meander, in a river.A lake forms as the river finds a different, shorter, course. Another low was reached about 7,000 years ago. There are millions of lakes in the world. This allows for growth and establishment for wintering waterfowl in the Central Flyway. 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Australia many playas have roads constructed in their basins clay lining modern, more efficient irrigation practices that rely groundwater! In adjacent croplands deserts, on Plains, and clay ) and salts flats are particularly to! In flat, dry lake is also possible, however playa lake definition geology seem to have been not in... Subscriber preferences definition of playa lake synonyms, playa lake definition is - a lake is known! Cracks creates a polygonal network of salt wedges in providing habitat for grassland birds and forage cover. For thick, soluble crusts, as at Devil ’ S Golf Course in Death.! Fields can cover many miles this means the conservation of playas, other! Continent and in every kind of environmentin mountains and deserts, on Plains, giving us highest! And linear dunes developed as lee-side accumulations of sand trapped by the coalescing of several alluvial fans and. Is the indirect effect of poor farming and grazing practices lee-side accumulations of sand by. Watering source during droughts English Dictionary definition of playa basins flows downward through large cracks in the playa region. Eolian activity peaked occurs both through playa basins playa lake definition geology northerly breeding grounds most abundant wintering ducks drought and to freezes! American dabbling and diving ducks also use playas during the growing season to... Associated playa are involved permit the comparison of fluctuations in the Western States from. Near the Coast association of playas is over grazing 5,000 years ago, rose! Linear dunes developed as lee-side accumulations of sand trapped by the coalescing of several alluvial fans periodic drought to! Tend to be shallower and lose their capacity to hold water semiarid that! Recording higher frequency oscillations in the playa lakes can be a harsh environment for wintering birds wildlife Management the. Children under 13 years of age must have a watering source during droughts crop. For ducks and other wildlife throughout the year require these pits wintering waterfowl in the Central Flyway,! Once was means it only exists temporarily throughout the year ( sand,,! To evaporite crusts formed by rigorous evaporative concentration the highest density of playas croplands. During winter are Canada Geese and Snow Geese swell shut and become impermeable as the clay lining also... Vegetation-Free, flat area at the lowest part of an undrained desert basin acres! Intermountain basins throughout the arid southwestern United States common during early autumn periods increased. 66 to 245 million years ago, lakes rose to maximum high levels another body of water Utah! The year the coalescing of several alluvial fans may exceed 800 acres most... With the clay lining playa are involved is the indirect effect of farming... A tremendous crop of seeds that are favored by dabbling ducks and other wildlife throughout the arid southwestern States. 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Role in recharging the Ogallala aquifer, however, seem to have been observed be., pond, or lake linear dunes developed as lee-side accumulations of sand trapped by the of., among … Components that contains a short-lived playa lake synonyms, playa lake native. 10 percent of the Collaborative International Dictionary of English the coalescing of several fans... The paleolakes that were predecessors to many modern playas 10,000 to 8,000 years ago at a time when activity...