Dynamics of Evaporite Distribution in Soils on a Fan‐Playa Transect in the Carrizo Plain, California

Eghbal, Mostafa Karimian; Southard, R. J.; Whittig, L. D.

doi:10.2136/sssaj1989.03615995005300030044x

Cited by 27 publications

(12 citation statements)

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“…Redistribution of salts on the fan usually involves a movement downfan and from the surface to greater depths by moisture, or off the fan altogether by moisture and wind. Salt movement by moisture other than runoff tends to result in the fractionation of the salts according to ionic mobilities (Eghbal et al, 1989).…”

Section: Salt Origin and Distribution Mechanisms Within The Regional mentioning

confidence: 99%

The Origin and Distribution of Salts on Alluvial Fans in The Atacama Desert, Northern Chile

Berger

Cooke

1997

Earth Surf. Process. Landforms

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The Atacama Desert has been predominantly hyperarid since the middle Miocene. Combined ionic and X-ray diffraction analysis shows that calcium sulphate is prevalent on three similar alluvial fans in salar basins across a transect of different environments in Antofagasta Province, northern Chile. Differences between the fans were largely due to the effect of local factors on salt input, secondary redistribution and deposit preservation. Thus carbonate was notable in the High Andes (fan C) and Pre-Cordillera (fan B), whereas in the Central Valley (fan A) greater quantities of the more soluble salts (chlorides and nitrates) probably reflect the higher level of aridity and an oceanic source (the camanchaca). Calcium sulphate distribution on the alluvial fans and on adjacent hilltops indicates an aeolian origin. Evidence from the Pre-Cordillera (fan B), however, suggests that salt input may have been episodic, related to changes in conditions within the general aridity and possibly to stone pavement and soil development. Calcium sulphate sources range from an input in Andean precipitation and the camanchaca to abundant regional evaporite deposits. It is probable, however, that products of Andean volcanism constitute the dominant primary source of calcium sulphate, and that the salt has subsequently been distributed widely within the endoreic basins of the region by a combination of groundwater, surface flow and the wind.

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Section: Salt Origin and Distribution Mechanisms Within The Regional mentioning

confidence: 99%

The Origin and Distribution of Salts on Alluvial Fans in The Atacama Desert, Northern Chile

Berger

Cooke

1997

Earth Surf. Process. Landforms

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“…Malek et al (1990) searched on the seasonal evapotranspiration from the margin and moist playa of a closed desert valley. Eghbal et al (1989) worked on the dynamics of evaporite distribution in soils on a fan-playa transect.…”

Section: Introductionmentioning

confidence: 99%

Microclimate of a desert playa: evaluation of annual radiation, energy, and water budgets components

Malek¹

2003

Intl Journal of Climatology

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We set up two automatic weather stations over a playa (the flat floor of an undrained desert basin that, at times, becomes a shallow lake), approximately 65 km east-west by 130 km north-south, located in Dugway (40°08 N, 113°27 W, 1124 m above mean sea level) in northwestern Utah, USA, in 1999. These stations measured the radiation budget components, namely: incoming R si and outgoing R so solar or shortwave radiation, using two Kipp and Zonen pyranometers (one inverted), the incoming R li (or atmospheric) and outgoing R lo (or terrestrial) longwave radiation, using two Kipp and Zonen pyrgeometers (one inverted) during the year 2000. These sensors were ventilated throughout the year to prevent dew and frost formation. Summation of these components yields the net radiation R n . We also measured the air temperatures and humidity at 1 and 2 m and the soil moisture and temperature (Campbell Sci., Inc., CSI) to evaluate the energy budget components (latent (LE), sensible (H ), and the soil ( and 12 789.7 MJ m −2 year −1 respectively. This yields about 1634.3 MJ m −2 year −1 as R n , which is about 24% of the annual R si . Of the total 1634.3 MJ m −2 year −1 available energy, about 25% was used for the process of evaporation (LE) and 77% for heating the air (H ). The annual heat contribution from the soil to the energy budget amounted to 2% during the experimental period. Our studies showed that the total annual measured precipitation amounted to 108.0 mm year −1 during the year 2000, but the total evaporation was 167.6 mm year −1 , which means some water was extracted from the shallow water table (about 60 cm on the average depth during the year 2000).

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“…The significant decreases in the EC-depth products at the end of the ponding period reflect a combination of ion pair formation, complexation, and evaporite precipitation. The latter process sequentially precipitates calcite, gypsum, thenardite, and halite (Hardie and Eugster, 1970;Eghbal et al, 1989).…”

Section: Resultsmentioning

confidence: 99%

Hydrological and geochemical investigations of selenium behavior at Kesterson Reservoir. Progress report, October 1, 1994--September 30, 1996

Zawislanski¹,

Tokunaga²,

Benson³

1997

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Dynamics of Evaporite Distribution in Soils on a Fan‐Playa Transect in the Carrizo Plain, California

Cited by 27 publications

References 0 publications

The Origin and Distribution of Salts on Alluvial Fans in The Atacama Desert, Northern Chile

The Origin and Distribution of Salts on Alluvial Fans in The Atacama Desert, Northern Chile

Microclimate of a desert playa: evaluation of annual radiation, energy, and water budgets components

Hydrological and geochemical investigations of selenium behavior at Kesterson Reservoir. Progress report, October 1, 1994--September 30, 1996

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