Madeira island consists of Miocene to Pleistocene lavas and pyroclasts. Major rock types
are alkali-basalts, basanites and hawaiites; principal soil types are leptosols, andosols and …

Many mountainous watersheds are conceived as aquifer media where multiple groundwater
flow systems have developed (Tóth, 1963), and as bimodal landscapes where differential …

Two piston cores (PCs), containing two full glacial cycles, were retrieved at Murray Ridge.
One core (PC463) contains sediment deposited at 920 mbsl within, the other (PC464) has …

This study identifies and quantifies the water–rock interactions responsible for the composition
of 25 spring waters, and derives the weathering rates of rock-forming minerals in a …

The study area is situated in a fault zone with fractured granites and metasediments. In a
conceptual model, infiltrating water first passes the bedrock cover of soil and saprolite and then …

Carbon dioxide, ammonia, and reactive phosphate in the interstitial water of three sediment
cores of the West African continental margin result from oxidation of sedimentary organic …

The contents of trace metals in suspended matter of the river Rhine have decreased during
the last few decades but still exceed background contents. Contamination factors for …

Box cores of sediments were collected at eight stations along a NE–SW transect starting on
the Pakistan continental slope in the moderately productive northeastern sector of the …

The adsorption of zinc on suspended matter from the river Rhine has been studied. High rates
of adsorption were apparent during the first hours of the experiments, but during the next …

Slow precipitation of amorphous ferric hydroxide was brought about by passing air through
constant ionic strength solutions (10/sup -3/ M) containing Fe/sup 2 +/ ions in the …