Abstract The volcanic Barva and Colima multiaquifer system is crucial for the drinking water supply of about 1.7 million people, 30% population in Costa Rica. complexity this simultaneous occurrence anthropogenic natural processes complicate understanding hydrochemical hydrogeological dynamics, both essential groundwater protection. This research aimed to develop a model discrimination groundwa...

Relevant data on the structure and composition of crystalline basement in Central México can be found by means plutonic, metamorphic, sedimentary xenoliths transported Neogene Quaternary volcanic eruptions within Trans-Mexican Volcanic Belt (TMVB). We present detailed major oxide trace elements concentrations, isotopic analysis thermobarometric estimations for a granitic xenolith an Early Mioce...

The use of cement materials in construction continues to increase every year, consumes lots raw material and emits CO2 from clinker production. To eliminate this negative effect, alternative are needed. Trass is natural pozzolan which formed silica-alumina rich volcanic rocks. As supplementary cementitious material, trass sufficiently durable reduce proportion mixture, thus more environmentally...

Abstract The low-grade metamorphic early Paleozoic basement of the Veitsch area presents a wide variety sedimentary facies domains. first domain consists thick metadacites Middle Ordovician age (Blasseneck Porphyroid), overlain by fine-grained metaclastics Rad Formation (Late to Silurian) and Devonian limestones calcitic marbles (Kaiserstein Kaskögerl Formation, respectively). Rhyolitic dacitic...

lor, 1989; Wada, 1989). However, little is known about the adsorption characteristics of DOP. Only one study Leaching of dissolved organic matter (DOM) and associated nutrihas examined adsorption isotherms of DOP in natural ents can be a significant loss from developing ecosystems. We studied DOM for soils. Kaiser (2001) compared the adsorption how the adsorption of dissolved organic P (DOP) an...