Influence of late Quaternary climate changes on geomorphic and pedogenic processes on desert piedmont, eastern Mojave Desert, California Quaternary Research 27 1987 130 146 The Willcox basin is also the former lakebed of a much larger late Quaternary pluvial lake, Lake Cochise (Figure 1). 32 , 1 ( 1989 ). 1-11 Article Download PDF CrossRef View Record in Scopus Google Scholar Res. Hevly, R. H. and Martin, P. S. 1961 Geochronology of Pluvial Lake Cochise, Southern Arizona: Pollen Analysis of Shore Deposits, Journal of the Arizona Academy of … At its peak about 12,700 years ago, it covered approximately 8,500 square miles (22,000 square kilometers). were also conducive to pluvial lake expansion in the Cochise. Arizona and Pluvial Lake Cochise ..... 11 Lake Basins East of the Rio Grande 14 Lake San Agustin Basin 13 Pluvial Lakes of the Jornada and Tularosa Basins (Trinity and Otero) ..... 15 Basins of the Sacramento Section (Estancia. The stratigraphy associated with Pleistocene Lake Cochise indicates that the bodies of water that intermittently filled the Willcox basin were larger and more permanent than the modern shallow playa lakes (Long 1966). discussed here. Pluvial lake: | | ||| | Pleistocene pluvial lakes and rivers of the Mojave Des... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive collection ever assembled. Pollen data collected from packrat middens in the Playas Basin in New Mexico, 90km northeast of San Bernardino At its greatest extent, Lake Cochise covered 190 km 2 and had a maximum depth of 11 m (shoreline at 1274 m elevation). Willcox Playa, the largest "dry lake" in Arizona, is a remnant of the pluvial Lake Cochise. The timing of these changes also broadly coincides with variations in the Fluvial systems aggraded the southern Animas Valley during the middle to late Holocene. and changes in lake levels at pluvial Lake Cochise to the east. lacking external drainage) and remnant of the Pluvial Lake Cochise that had been a much larger and deeper lake at its maximum But many visitors to Willcox Playa find its natural history surprisingly rich, an extraordinary geologic setting that supports hundr… Lake Lahontan (map of former Lake Lahontan) is a pluvial lake that covered nearly all of northwestern Nevada as well as parts of northeastern California and southern Oregon. None of the pluvial lake basins presently contain perennial bodies of ICE AGE LAKES IN NEW MEXICO BRUCE D. ALLEN 1961. Robinson, R.C., 1965, Sedimentology of beach ridge and nearshore deposits, pluvial Lake Cochise, southeastern Arizona: Tucson, University of Arizona, M.S. ’Willcox, Cochise County, Arizona (32o 11’N,109o 44W,1290m)—This area is along the northeast boundary of the Willcox playa, a closed basin (i.e. Pluvial Lake Cochise, located in Cochise County, southeastern Arizona, was one of many lakes present during the late Pleistocene Epoch in the Basin and Range province of the western United States (Feth, 1964). any period during which the climate was wetter than now, usually applied to periods during the PLEISTOCENE EPOCH . Geochronology of pluvial Lake Cochise, southern Arizona. Cameron, S.P., 1971, Ostracades of pluvial Lake Cochise, Cochise County, southeastern Arizona: Tempe, Arizona State University, M.S. Willcox Playa. We spotted many different species of ducks, American Avocet, White-faced Ibis, Black-necked Stilt, Marbled Godwit, and Wilsons Phalarope and others. pluvial: of, relating to, or due to the action of rain. Ariz. Press, Tucson, Ariz. 87 p. Megard, R. 0. Univ. Soils and stratigraphic evidence show that three young lake highstands occurred during the Holocene and that a higher lake stand occurred 18,000 to 20,000 14 C yr B.P. M.R. Surface elevations of the pluvial lakes (highstand el-evations) ranged from approximately 3950 ft (1204 m) for Lake Otero in the Tularosa basin, to about 7000 ft (2134 m) for Lake San Agustin. doi: 10.1016/0033-5894(89)90027-6 as groundwater levels began to decline (Haynes, 1987(Haynes, , 1991Pigati et al., 2004). Visitors reviews vary wildly, from “bleak and inhospitable” where “dust devils slither along,” to “teeming with life” and “dawns break cold, clear and full of life.” Even in Arizona, known for its stark contrasts, this flat expanse of valley floor is a landscape of radical extremes. Pluvial Lake ' Cochise, located in Cochise County of southeastern Arizona, was one of these lakes which later dried up; its remnant is now known as Willcox Playa or Willcox Dry Lake. Its level rose and fell with climatic changes, finally drying up completely WatersLate Quaternary lacustrine history and paleoclimatic significance of pluvial Lake Cochise, southeastern Arizona Quaternary Research, 32 (1989), pp. Pluvial Lake Cochise, located in Cochise County, southeast-ern Arizona, was one of many lakes present during the late Pleistocene Epoch in the Basin and Range province of the western United States (Feth, 1964). Geochronology of pluvial lake Cochise, Southern Arizona: I. Pollen analysis of shore deposits and from 16,400 to 15,925 cal yr B.P. A fossil pollen record of the American Southwest. Thus, in southeastern Arizona, the assumption that changes in climate are reflected in all aspects of the hydrologic cycle of a region simultaneously is validated. The road that circles the lake here provides excellent opportunties to watch the birds, and the early morning seems to be the best viewing time. Dohrenwend , J.C. , Late Quaternary lacustrine history and paleoclimatic significance of pluvial Lake Cochise, southeastern Arizona. Suffice it to say that the Agustin Plains (Markgraf et al., 1984; Phillips et al., 1992) climatic conditions for development of pinyon–juniper and Estancia Basin (Allen and Anderson, 2000) to the north, woodland at ⬃1400 –1500 m at 16,000 and 13,800 14C yr but fails to record the late glacial highstand seen in Lake B.P. Unlike similar dry lakes, the black mud below the surface contains a rich … 4500calyrBP (Waters, 1989). The Willcox Playa is a large endorheic dry lake or sink adjacent to Willcox, Arizona in Cochise County, in the southeast corner of the state. The lake-level history of pluvial Lake Cochise, 100km northwest of San Bernardino cie´nega, indicates high stands prior to 6038calyrBP and another ca. Ground-water discharge (GWD) deposits form in arid environments as water tables rise and approach or breach the ground surface during periods of enhanced effective precipitation. thesis. Two stands of pluvial Lake Cochise, older than 14,000 yr B.P., reached elevations above 1290 m. The prominent 1274-m shoreline of Lake Cochise, which circumscribes the basin, was largely created during a high stand between 13,750 and 13,400 yr B.P. It was designated a National Natural Landmark in 1966 for its fossil pollen captured … the valley drain toward the playa which is the dry lake bed of pluvial Lake Cochise. (Waters, 1989). Quat. Two stands of pluvial Lake Cochise, older than 14,000 yr B.P., reached elevations above 1290 m. The prominent 1274-m shoreline of Lake Cochise, which circumscribes the basin, was largely created during a high stand between 13,750 and 13,400 yr B.P. larger late Quaternary pluvial lake known as Lake Cochise. environmental interpretation of the ostracode succession in late quaternary sediments of pluvial lake cochise, southeastern arizona. Lake Basins West of the Rio Grande ..... 10 Sulphur Springs Valley. Two hundred pollen grain counts from each of 211 levels of a 42-meter core from pluvial Lake Cochise in southeastern Arizona indicate Wisconsin and pre-Wisconsin vegetation changes in … Where preserved, these deposits contain information on the timing and elevation of past ground-water fluctuations. Ecology 44: 436-444.. 1963c. The last 10,000 years. Abstract. Such lakes were then common in the Basin-and-Range province. Unlike similar dry lakes, the black mud below the surface contains a rich fossil pollen record of the pluvial periods of the Pleistocene. Lake Cochise later dried up; the desiccated lake bed is now known as Willcox Playa or Willcox Dry Lake. Willcox Playa doesn’t draw many crowds. author cameron sp; lundin rf 125 w. rose lane, phoenix, ariz. 85013, usa Willcox Playa, the largest "dry lake" in Arizona, is a remnant of the pluvial Lake Cochise. Portions of the dry lake bed have been used as a bombing range by the US military. Climate and Vegetation At Willcox the mean annual temperature is 89°F, the mean At its maximum extent, Lake Cochise was 20 miles long, 11 miles wide, and covered 120 square miles, or about 7 percent of its drainage area (Meinzer and Kelton, 1913). accumulated in a pluvial lake, Lake Cochise. Waters, R.M. Geochronology of pluvial Lake Cochise, southern Arizona; [Part] 3, Pollen statistics and Pleistocene metastability Pollen analysis of a 42-meter core. Four separate stands of late Quaternary Lake Cloverdale in the southern Animas Valley are recorded by lacustrine shoreline deposits. It resembles the pluvial period that occurred in western North America during the late last glacial maximum, but was much weaker than the LGM wet period. The diel cycle of stratification It is part of the Sonoran Desert ecoregion and is the remnant of a Pleistocene era pluvial Lake Cochise. Two hundred pollen grain counts from each of 211 levels of a 42-meter core from pluvial Lake Cochise in southeastern Arizona indicate Wisconsin and pre-Wisconsin vegetation changes in the region. The stratigraphy associated with Lake Cochise indicates it was much larger and more permanent than the modern Late Quaternary lacustrine history and paleoclimatic significance of pluvial Lake Cochise, southeastern Arizona Quaternary Research 32 1989 1 11 Wells , S.G. McFadden , L.D. II. Nearby pluvial Lake Cochise desiccated following highstands prior to 16,670 cal yr B.P. Cochise, de nombre apache Shi-Kha-She (c. 1812 - 9 de junio de 1874), fue un jefe de los apaches chiricahua en Norteamérica que lideró una revuelta en 1861, dando así principio al episodio conocido como Guerras apaches.. Biografía. Lake Cochise later dried up; the C (100desiccated lake bed is now known as Willcox Playa or Willcox Dry Lake. In the San Pedro Valley deposition of the Coro Marl, a spring-fed marsh deposit, ceased ∼15,600 yr B.P.
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