the cheshin meta-calcareous rocks (permo triassic) in southeast hamedan outcrop in association with a variety of pelitic schists and hornfels rocks. the intrusion of the alvand batholith (jurassic age) into pelitic and calcareous host rocks has produced metamorphic rocks in the hamedan area (cheshin village). on the basis of the dominance of calcite/dolomite, silicate and ore minerals, the calc...

El skarn Santa Isabel de Moro es un cálcico, localizado en los flancos occidentales la Cordillera Negra el norte del Perú, mineralización se ha originado por emplazamiento plutones granodiorita y cuarzodiorita las calizas Formación Santa. objetivo este estudio caracterizar minerales texturas rocas encajantes estructuras mineralizadas para determinar origen evolución depósito. La metodología emp...

kamtal skarn is located 15 km northeast of kharvana, east-azarbaijan. a quartz-monzonitic stock of oligocene age intruded the upper cretaceous sedimentary sequence (claystone, limestone, marl, and siltstone) developing noticeable metamorphic (marble, hornfels) and metasomatic (skarn) alteration zones along the contact. kamtal skarn is of calcic type and consists of both endoskarn and exoskarn z...

In this paper, we trace the thermal history of mafic–ultramafic intrusions Monchegorsk (MC), Fedorova–Pana (FPC), and Norilsk ore-bearing complexes (NC) using an upgraded version author’s software Gehenna 2.2. It is shown that a key role in concentration sulfides lower parts belongs to preliminary heating host rocks by early magmatic influxes. presence late phases relatively small volume, patte...

Raman spectroscopy identified graphite and multilayer graphene on ~70,000-year-old stone tools from Middle Stone Age deposits at Sibudu Cave, KZN, South Africa. The graphite/multilayer appeared to be concentrated the hafting side of artefacts, suggesting that it was added glue. However, only made hornfels not those dolerite quartzite. A geological origin is therefore out question. In this paper...

The Sonju Lake intrusion (SLI) is a 1200-m-thick, shallow-dipping, sheet-like intrusion that forms part of the Beaver Bay Complex (RI-58, Chapter 7). Although its exposed strike-length is only about 3 km (Fig. 3-1), the SLI has a distinctive aeromagnetic signature that can be traced for at least 20 km beneath a cover of glacial drift. The nearly constant width of its aeromagnetic anomaly sugges...