منابع مشابه
Heavy mineral investigation of Carmel Bay beach sands
This investigation was conducted in order to identify the heavy minerals of the beach sands of Carmel Bay, and to analyze the distribution of these minerals, Carmel Bay offers the opportunity to study heavy mineral assemblages in a small isolated bay, internally divided by a submarine canyon, containing smaller pocket beaches influenced by several geological formations and two fresh water strea...
متن کاملThe management of radiation hazards from the mining of mineral sands in Western Australia
This paper is concerned with the approach followed in Western Australian for dealing with the environmental hazards of ionising radiation associated with the mining and processing of titaniferous minerals contained in mineral sands deposits. There is a growing public awareness of the risks posed by one of these minerals, monazite, which emits low levels of radiation as it contains thorium and u...
متن کاملInvestigation of Fault Permeability in Sands with Different Mineral Compositions (Evaluation of Gas Hydrate Reservoir)
We used a ring-shear apparatus to examine the perpendicular permeability of sands with different mineral compositions to evaluate fault behavior around gas hydrate reservoirs. The effect of effective normal stress on the permeability of two sand types was investigated under constant effective normal stresses of 0.5–8.0 MPa. Although Toyoura sand and silica sand No. 7 mainly comprise quartz, sil...
متن کاملVelocity–porosity relationships: Predictive velocity model for cemented sands composed of multiple mineral phases
Computer simulations are used to calculate the elastic properties of model cemented sandstones composed of two or more mineral phases. Two idealized models are considered – a grain-overlap clay/quartz mix and a pore-lining clay/quartz mix. Unlike experimental data, the numerical data exhibit little noise yet cover a wide range of quartz/cement ratios and porosities. The results of the computati...
متن کاملA Constitutive Model for Sands
In this paper, an elastoplastic constitutive model is presented for predicting sandy soil behavior under monotonic and cyclic loadings. The model is based on the CJS3 model that takes into account deviatoric and isotropic mechanisms of plasticity. The flow rule in deviatoric mechanism is non-associated and a kinematic hardening law controls the evolution of the yield surface. In the present s...
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ژورنال
عنوان ژورنال: Applied Earth Science
سال: 2016
ISSN: 0371-7453,1743-2758
DOI: 10.1080/03717453.2016.1201897