The Miocene pyroxene andesite lava flows are exposed in southeastern edge of Urumieh Dokhtar Magmatic assemblage in Iran. The hypocrystalline andesite in parts contain conspicuous co-magmatic igneous enclaves which are dark grey and occur mostly as spherical and occasionally as ribbon shapes with some showing chilled margins. Petrographic study shows that the ribbon type enclaves have been form...

The Fronteira Oeste Rift located in the state of Rio Grande do Sul, southern Brazil, covers an area 15,000 km2 and constitutes both a rhombohedral structural province paleohot spring field. These major features can be observed during two-day field trip. A 4x4 vehicle is recommended. weather cold (freezing), humid climate winter hot (35 °C), varying from to dry summer-. Excellent access outcrops...

The size and shape of individual grains, play an important role in the mechanical behavior granular materials such as strength stability railway ballast. aim this research is to study from which uniform, reproducible grains with irregular convex geometry can be created by molding additive manufacturing technologies order create artificial assemblies that used experiments. Packings determined gr...

Many landslides occur in Samigaluh District, Kulon Progo Regency, Yogyakarta, Indonesia. However, no research discusses that often on the main road connecting city of Yogyakarta and various tourist resorts Samigaluh. This study aims at determining soil vulnerability lithology model as a contribution to landslide mitigation planning. is based shear wave velocity (Vs) layer thickness derived by m...

This paper presents experiences with design and construction process of the Tanju Tunnel, West Nusa Tenggara. The objective this research was to characterize volcanic intrusive rock masses for designs tunnel excavation method support system. Engineering geological investigations were carried out, upon which stand-up time estimated system determined based on mass classifications RMR (Bieniawski,...

Landslides are caused by changes in the structure of subsurface materials on steep slopes due to weathered rock conditions and soil pores saturated conditions. This study used geoelectric resistivity method identify type landslide-susceptible areas Pacet-Trawas road corridor, Pacet District, Mojokerto Regency. The research location was an area with undulating mountainous morphology. geoelectric...