Springs are the important water resources, which thier study is necessary in terms of their management and exploitation. In northern Iran, the karst springs locate in the central Alborz highlands and alluvial springs on the Caspian southern coasts.The Karst and alluvial springs discharge is variable because of different conditions in terms of aquifer, topography and precipitation .This study ha...

The evolution of fault slip through time may yield insight into the geodynamics of deforming lithosphere. Precise determination of temporal variations in fault slip is often hindered, however, by a dearth of markers of varying age from which to reconstruct fault slip. Here we determine slip rates across the White Mountain Fault Zone over the past ca. 0.8 Ma from displaced alluvial deposits pres...

Sediments along 1st–5th-order streams in Midwestern USA contain excellent records of abrupt climatic change in the Holocene. Cutbank exposures provide AsnapshotsB of areal paleovegetation based on assemblages of well-preserved pollen and plant macrofossils; when these sites are radiocarbon dated and arranged chronologically, a detailed picture of Holocene vegetational change emerges that is con...

The south-eastern Gorny Altai is one of the most hazardous seismogenic area in north Central Asia. We present a synthesis field, 230Th-U geochronological, mineralogical and geochemical data collected on seven Quaternary travertines. All travertines occur within zones active faults that border Chuya Kurai intermontane basins. Travertine cement mainly comprises calcite (with minor amounts aragoni...

Playne (1970) suggested that the levels of sodium (Na) in some tropical grasses are below those considered sufficient for the requirements of lactating cows. We examined the concentration of Na in guinea grass from a number of areas in Queensland. Levels in creeping guinea (P. maximum Q 8132), P. maximum cv. Coloniao, P. maximum cv. Hamil and P. maximum (C.P.I. 37910, Makeuni) ranged from 0.007...

At the “Pašino vrelo” source, groundwater is exploited by means of wells which tap a carbonate aquifer of Badenian age. The natural quality of groundwater complies with the provisions of the Regulation on health and safety of drinking water. However, anthropogenic impacts in the form of microbiological pollution have been observed. Extensive hydrogeological investigations have been conducted in...