Formulation of the problem. Modern advances in oceanographic studies sedimentogenesis and orogenesis open up opportunities for in-depth study rocks by fold-nappe systems, including Carpathian region. Review previous research. On territory Carpathians flysch complexes researchers have mainly noted findings carbonates manganese iron nodules.At same time, contain iron-manganese oxide mineralizatio...

SANDSTONE OF LOW-T SPRING ORIGIN. J. L. Berkley, Department of Geosciences, SUNY Fredonia, Fredonia, NY 14063 and Kaitlyn Dykstra, Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA 15213. Introduction: Detailed petrological analysis of a dark black to dark brown conglomeratic sandstone in southwestern New York State shows that its cementing agent is composed mainly o...

"Denotes other ttian senior author. ACHARYA, HEMENDRA K., Stone & Webster Engineering Corp., Boston, Massachusetts Geothermal Fields and Plate Tectonics in Circum-Pacific Area A number of geothermal fields explored so far in the CircumPacific area occur along spreading ridges and subduction zones in areas of young tectonism and volcanism. A preliminary analysis by pattern recognition techniques...

introduction the mn mineralization occurs in the northeastern segment of the sabzevar zone (sz), north of the central iranian microcontinent (cim). this zone (sz) is located between the cim fragmentation in the south and the kopeh dagh sedimentary sequence in the north. the ore deposits of the northeastern segment of the sabzevar zone can be divided into three groups, each with different metal ...

introduction the shahrestanak mn deposit is located in southern qom province, 12 km southwest of the city of kahak. based on geological-structural divisions of iran, the deposit belongs to central volcanic belt or urumieh-dokhtar zone. the venarch deposit is one the most important known manganese deposits in iran. the sharestanak and venarch deposits are spatially and temporally related to each...

The objective of this project is to develop a pellet formulation which is capable of achieving low sulfur partial pressures and a high capacity for sulfur, loaded from a hot fuel gas and which is readily regenerable. Furthermore the pellet must be strong for potential use in a fluidized bed and regenerable over many cycles of loading and regeneration. Regeneration should be in air or oxygen-dep...

and hydroxides containing Mn(III) and Mn(IV) can oxidize organic ligands more rapidly than O2. Aromatic The complex interactions of oxidizable organic ligands with soil and nonaromatic ligands have been reported to dissolve Mn(III,IV) (hydr)oxide minerals have received little study by in situ spectroscopic techniques. We used a combination of an in situ electron reductively Mn(III,IV) (hydr)oxi...

•First demonstration of lattice oxygen redox in Ir single-site catalyst (Ir–MnO2)•Ir–MnO2 exhibited an over 42 times mass activity than that commercial IrO2•Ir–MnO2 show only 15 mV increasement overpotential after 650 h durability test Proton exchange membrane water electrolyzers (PEMWEs) represent a promising technology to efficiently convert renewable energy into high-quality hydrogen. Howeve...