Results 21 to 30 of about 60,699 (261)

Cadmium speciation assessment in salinised environmental conditions [PDF]

open access: yesAgroznanje, 2012
Increased topsoil salinity and trace elements content due to inappropriate land management practices (fertigation, soil amendments application) represent some of the most widespread threats to food safety and security in modern agriculture ...
Ondrasek Gabrijel   +3 more
doaj   +1 more source

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

open access: yes, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Hamilton, David P.   +2 more
core   +2 more sources

Highly siderophile element and osmium isotope systematics of basaltic volcanics: A different approach to petrological processes

open access: yesBulletin of the Mineral Research and Exploration, 2022
The highly siderophile element (HSE) or platinum group element (PGE) and Os isotope systematics of basaltic volcanics have recently received a significant attention because of their potential to constrain the petrological processes on magma generation ...
Bahrican Ar   +4 more
doaj   +1 more source

Basaltic Plinian eruptions at Las Sierras-Masaya volcano driven by cool storage of crystal-rich magmas

open access: yesCommunications Earth & Environment, 2022
Large explosive eruptions of basaltic magma are promoted by low pre-eruptive temperatures in crystallising shallow magma reservoirs, according to an integrated petrological, geochemical and numerical modelling study.
Emily C. Bamber   +8 more
doaj   +1 more source

Provenance history of a Late Triassic-Jurassic Gondwana margin forearc basin, Murihiku Terrane, North Island, New Zealand: petrographic and geochemical constraints [PDF]

open access: yes, 2004
The Murihiku Terrane in the North Island was a forearc basin adjacent to a volcanic arc along the eastern margin of Gondwana during the Mesozoic. The rocks that infill the basin are mainly volcaniclastic sandstones and mudstones, often turbiditic, with ...
Briggs, Roger M.   +2 more
core   +2 more sources

Prediction of the lifespan of cement at a specific depth based on the coupling of geomechanical and geochemical processes for CO2 storage [PDF]

open access: yes, 2019
The injection of carbon dioxide (CO2) captured from combustion-based processes into underground formations is one of a number of plausible methods to reduce its release into the atmosphere and consequential greenhouse gas warming.
Bagheri, Mohammadreza   +2 more
core   +1 more source

A nutrient control on expanded anoxia and global cooling during the Late Ordovician mass extinction

open access: yesCommunications Earth & Environment, 2022
Phosphorus recycling played a critical role in driving the Late Ordovician mass extinction through ocean euxinia, and in the initiation of the Hirnantian glaciation, according to geochemical analyses of marine rocks from China and global biogeochemical ...
Zhen Qiu   +8 more
doaj   +1 more source

Assessment of the hydrocarbon potential of the Bering Sea

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2021
Background. The issues of hydrocarbon (HC) forecasting and prospecting on sea shelves remain relevant. In this paper, an experience of assessing the hydrocarbon potential of the Bering Sea using the method of basin modelling is demonstrated.Aim.
E. A. Lavrenova   +2 more
doaj   +1 more source

Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]

open access: yes, 2009
Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
Ellam, R.M.   +5 more
core   +1 more source

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