The infrastructure project has many lies on the mudrock foundation. Some reports in Hambalang, West Java, Indonesia, state engineering problem related to landslides and foundation failure due material's existence. originated from Jatiluhur Formation. is also present slope stability, such as surface erosion landslide slopes. Landslide material easily broken into smaller fragments. This research ...

Nineteen ichnotaxa, together with algal and invertebrate remains, various pseudo-traces sedimentary structures are described from the Torneträsk Formation exposed near Lake Torneträsk, Lapland, Sweden, representing a marked increase in diversity of biotic traces recorded this unit. The “lower siltstone” interval contains mostly simple pascichnia, fodinichnia domichnia burrows trails low-energy ...

The petrographic and geochemical analysis of the greywacke horizon late Neoproterozoic Hazara Formation from Mountains has been investigated to determine provenance, tectonic settings weathering history sediments. Late is a thick sedimentary sequence comprising greywacke, shale, argillites, siltstone, limestone. greywackes are characterized by fine medium-grained, moderately sorted sub-angular ...

Sistem penambangan batubara di Tambang Banko Pit 1 Utara adalah strip mining dengan sistem shovel-dump truck. Jenis material terdiri dari top soil, claystone, siltstone strength 0,2 – 3 Mpa dan sebagian perlu diledakkan. Untuk menunjang kinerja excavator dilakukan pemberaian overburden terlebih dahulu menggunakan ripper Komatsu D375A-5. Berdasarkan nilai kuat tekan (strength) material, spesifik...

CO 2 + O in situ leaching has been extensively applied uranium recovery sandstone-type deposits of China. The geochemical processes impact and constrain the reaction solution migration; thus, it is necessary to study –water–rock process its influence on physical properties uranium-bearing reservoirs. In this work, a simulation experiment was carried out, mineralogical multiscale pore characteri...

Deepwater lobes constitute a significant volume of submarine fans and are primarily believed to exhibit simple sheet geometry. However, recent studies interpret the geometries these deep-marine as distinct with respect complexity facies their distribution. Hence, conceptual model sediments is essential discuss associated fan lobe architecture. The present study highlights heterogeneity distribu...

One of the most distinguished sandstone geoheritage resources in Khorat Plateau is Hin Chang Si located Nam Phong National Park, Khon Kaen Province. The clastic sedimentary rocks Phra Wihan Formation Group covered this area. As a result lithologic study, consists pebbly sandstone, moderately sorted medium- to coarse-grained and small amount siltstone interbedded with laminated shale. characteri...

The paper developed a technique for solving mixed nonaxisymmetric problems of the theory elasticity bounded bodies revolution made transversely isotropic material under action surface forces specified according to cyclic law. involves development energy method boundary states, which is based on concepts spaces internal and conjugated by isomorphism, makes it possible establish one-to-one corres...

The weakly cemented sandstone is widely distributed in the Western Mining Area, which mainly formed by mineral grains and minerals through compaction cementation. To study influence of grain size on mechanical properties acoustic emission (AE) characteristics sandstone, uniaxial compression Brazilian splitting AE tests were carried out four specimens with different sizes. physical properties, b...

Abstract Proppant crushing and embedment in hydraulically-induced fractures is a major drawback to the recovery of unconventional oil/gas geothermal energy production. This study provides grain-scale analysis fracture evolution mechanisms proppant crushing, rock damage during embedment, influence realistic reservoir/fracture fluid on behaviour packs subjected in-situ stresses using discrete ele...