A comparison is made of the probability of the process of two neutrino double beta decay for Se in direct (counter) and geochemical experiments. It is shown that the probability is systematically lower in geochemical experiments, which characterize the probability of ββ(2ν) decay a few billions years ago. The experimental data for Te are also analyzed. It is shown that geochemical measurements ...

Geochemical mapping programs carried out by the Geological Survey of Sweden (SGU) have generated large databases containing information on the concentrations of chemical elements in rocks, surface sediments and biogeochemical materials. Regional geochemical data being imprecise, multivariate, spatially auto-correlated and non-normally distributed pose specific problems to the choice of data ana...

Double patterning (DP) in a litho-etch-litho-etch (LELE) process is an attractive technique to scale the K1 factor below 0.25. For dense bidirectional layers such as the first metal layer (M1), however, density scaling with LELE suffers from poor tip-to-tip (T2T) and tip-to-side (T2S) spacing. As a result, triple-patterning (TP) in a LELELE process has emerged as a strong alternative. Because o...

The geochemical history of an upper deltaic plain pending tidal wetland restoration was reconstructed to assess remobilization of redox-sensitive constituents in sediment, identify depositional processes promoting geochemical retention, and determine the extent of contamination with Hg, As, Pb, Cu, and Zn. Three 12-14-m sediment cores were analyzed for bulk sediment geochemistry using ICP-AES. ...

The deposits of Bor and Cukaru Peki are important contributors to the Apuseni–Banat–Timok–Srednogorie (ABTS) belt’s metallogenic endowment. We use decision tree random forest algorithms applied zircon geochemistry data from Bor, a selection other localities within ABTS. resulting predictions, supported by high scores on test set predictions for algorithm, suggest that it is possible fingerprint...

As a result of isotope-geochemical study, the age data (U-Pb method, ID-TIMS) titanite from first phase granites Belokurikhinsky granite massif, Gorny Altai, were obtained for time. The concordant value 255 ± 2 Ma coincides within margin error with previously published results dating micas second and third phases Belokurikha massif by Ar-Ar method (250 3 Ma). At same time, differ significantly ...

This report presents some strategies to predict metal mobility at mining sites. These strategies are based on chemical, physical, and geochemical information about metals and their interactions with the environment. An overview of conceptual models, metal sources, and relative mobility of metals under different geochemical conditions is presented, followed by a discussion of some important phys...

Copper and associated gold mineralization in the Mundiyawas-Khera area of western India is hosted by Proterozoic felsic volcanic rocks rhyo-dacite composition. Signatures hydrothermal alteration represented sericite, epidote, scapolite carbonates are well observed around ore zone. The with gently to flat sloping REE pattern, variable negative Eu anomaly, intermediate abundances HFSE moderate lo...

Editorial Geochemical Transactions, the first online-only journal in geochemistry and environmental chemistry, is now the first major open access journal in this subject area. All issues of Geochemical Transactions, including the back content, will be fully and permanently available online to all, without a subscription charge. Copyright of all future articles will be retained by the authors. G...