Estimation of Elastic Stress-Related Properties of Bottom Sediments via the Inversion of Very- and Ultra-High-Resolution Seismic Data

Izvestiya, Atmospheric and Oceanic Physics - This paper provides an overview of several seismic inversion approaches and their application to very- and ultra-high-resolution marine seismic...     

Biogeochemistry, a prospecting tool in the search for mercury mineralization

Summary of biogeochemical prospecting for mercury mineralization in the Pinchi Fault is given. One thousand two hundred and eight plant samples were collected and analyzed for mercury. In mineralized areas the typical mercury content of dried plants was not less than 0.2 and 0.4 μg/g and even concentrations between 0.6 and 1.6 μg/g were observed. In nonmineralized zones at least 90% of the plants contained no more than 0.15 μg/g of mercury. Analytical and sampling procedures are described.     

Quantitative studies of weathering in saprolitized charnockites associated with a landslip zone at the porthimund dam,India

Studies on saprolitized charnockites associated with a landslip observed in the Blue Mountains in close proximity of the Porthimund Dam (11°22'E 76°34′30″N), Nilgiris District, Tamilnadu State, South India, are reported.Laboratory investigations of the geotechnical properties were carried out to evaluate the nature and degree of weathering quantitatively for estimating the soundness of the charnockites constituting the slip zone. The results of per cent decomposed product of the crest, scarp and toe portions of the slip denote positive correlations with porosity and compressibility; and negative correlations against density, wave velocity, Young's modulus, compressive strength and tensile strength. It is also seen that in the absence of the information on decomposed product, weatherability could still be evaluated considering the per cent change of any physical parameter.Such studies should prove valuable in the mapping of weatherability zones and the assessment and determination of foundation conditions.     

Large-Scale Instability in Supernovae and the Neutrino Spectrum

Astronomy Reports - A large fraction of the energy released during the gravitational collapse of the core of a massive star is carried by neutrinos. Neutrinos play the main role in explaining...     

Peri-Gondwanan Blocks in the Structure of the Southern and Southeastern Framing of the East European Platform

Geotectonics - Synthesis of the results of U–Pb dating of detrital zircons (dZr) from the Uppermost Precambrian–Phanerozoic strata of the southern and southeastern framing of the East...     

The Structure and Formation Conditions of the Callovian–Oxfordian Deposits of Sudak Bay (Crimea)

The composition and origin of the Callovian–Oxfordian deposits of the Sudak Bay were characterized on the basis of the generalization and analysis of our own results, as well as published and unpublished data. The botanical future was first implemented for the geological mapping of the Oxfordian deposits.     

Long-Term Geochemical Monitoring of the Source of the Angara River (Runoff from Lake Baikal)

The long-term data (1950–2017) on the chemical composition of the water from the source of the Angara River, which is the only run-off from Lake Baikal, a large and clean fresh water reservoir, are presented. The absence of water contamination despite the anthropogenic influence is shown. The similarity and constancy of the current composition of the waters in the lake and the Angara River are recorded. It is recommended to continue geochemical studies of this unique world heritage site.