Freezing effects on aggregate stability of soils amended with lime and gypsum
The objectives of the laboratory study were to determine the effects of freeze-thaw cycles, water content at freezing, and lime and gypsum additions on the aggregate stability of 6 agriculturally important US soils differing in texture, mineralogy
Conditions and mechanisms of neotectonic fissuring and cave formation are considered with special reference to the gypsum massive of Podolia. The Podolian platform is shown to be a surprisingly stable morphostructure with planated topography which
. The latter has not penetrated the central part of the gypsum massive of Podolia. Within the limits of the latter, due to the gypsum member viscous flow towards large river valleys a complicated dense network of subterranean holes developed : later
High (ground) water levels and dune development in central Australia: TL dates from gypsum and quartz dunes around Lake Lewis (Napperby), Northern Territory
Australia ; Dating ; Dune ; Gypsum ; Lake ; Lake level ; Northern Territory ; Palaeo-environment ; Palaeoclimate ; Palaeohydrology ; Quaternary ; Thermoluminescence
. The answer will promote the understanding of palaeoclimate and palaeohydrology. This paper reports the results of TL dating of Lake Lewis gypsum and quartz dunes.
The weathering of a Late Miocene gypsum-calcareous mudstone outcropping in large badland areas of SE Spain, under a semi-arid Mediterranean climate, was studied by means of 2 experimental approaches using both laboratory and field-based techniques
Land subsidence and caprock dolines caused by subsurface gypsum dissolution and the effect of subsidence on the fluvial system in the Upper Tigris Basin (between Bismil-Batman, Turkey)
Karstification-based land subsidence was found in the Upper Tigris Basin with dimensions not seen anywhere else in Turkey. The subsidence was formed as a result of subsurface gypsum dissolution in Lower Miocene formation. This study describes
Gypsum ; Karst ; Karstic landform ; Moldavia ; Romania
In the Tazlău Subcarpathians, that lies in the Moldavian Subcarpathians, there are some area rich in gypsum deposits. The main landforms related to these deposits are dolines, lapies, swallets and two little caves. - (M. Vârlan).
This paper reports a preliminary experimental study which aims to establish dissolution rates for gypsum over the range of the electrical conductivities, flow velocities, and gypsum saturation levels encountered in the surface waters of the Ebro
Feasibility of using FGD gypsum to conserve water and reduce erosion from an agricultural soil in Georgia
Agricultural practice ; Agropedology ; Cotton ; Erosion control ; Experiment plot ; Georgia (USA) ; Gypsum ; Infiltration ; Rainfall simulation ; Sediment budget ; Soil improvement ; Soil water ; United States of America ; Water erosion
Objectives were to quantify rainfall partitioning and sediment delivery improvements with surface applied FGD gypsum from an Ultisol managed to conventional till (CT) and to assess the feasibility of using FGD gypsum on agricultural land in southern
Georgia. A field study (Faceville loamy sand, Typic Kandiudult) was established (2006, 2007) near Dawson, GA managed to CT, irrigated cotton (Gossypium hirsutum L.). Results and discussion. In conclusion, applying FGD gypsum to agricultural lands is a cost
gypsum, deposited in a Neogene intra-montane basin, is composed of continuous strata of very pure selenite. The purpose of this research is to identify the main karst geomorphological features and to integrate these data with hydrogeological records
for better understanding the role of the karst aquifer in the groundwater recharge of the Aguas River. This study took place in the southern part of the Sorbas gypsum plateau with several steps and multiple field campaigns for geo-morphological
that gypsum-rich layers were formed under shallow, saline waters, possibly associated with warm to hot and dry environments such as the Last Interglacial epoch and the early Holocene. The sediments characterized by relatively high amounts of non-salt sediments
, in which gypsum did not accumulate, could be deeper water phases formed under the cold and/or wet environments such as the glacial epochs.
Weathering experiments are reported combining frost and a range of salts that occur widely on sandstone rock outcrops in western and central Europe. The effects of alunogen, gypsum, halite and alum salts are examined, both singly and in combination