Results 61 to 70 of about 61,211 (288)

A Reproducible SEM Surface Imaging Protocol for Monitoring Microstructural Changes During Gas–Rock Interactions

open access: yesGreenhouse Gases: Science and Technology, EarlyView.
ABSTRACT Reliable characterization of mineralogical and textural changes in rock samples is essential for understanding fluid–rock interactions, particularly in experimental studies simulating subsurface conditions. This study presents a reproducible protocol for scanning electron microscopy (SEM) analysis of rock surfaces before and after exposure to ...
Berta Ordóñez‐Casado   +3 more
wiley   +1 more source

Geochemical characterization and paleo-burial history modelling of unconventional resources: A case study from the Kimmeridge Clay Formation (KCF) in the UK North Sea

open access: yesUnconventional Resources
For several decades the UK North Sea has been a prolific oil and gas province, with numerous conventional oil and gas discoveries sourced predominantly by the Upper Jurassic to Lower Cretaceous Kimmeridge Clay Formation (KCF).
Akinniyi A. Akinwumiju   +1 more
doaj   +1 more source

Phosphorous runoff risk assessment and its potential management using wollastonite according to geochemical modeling

open access: yesOpen Agriculture, 2019
Loss of phosphorus from agricultural land through water runoff causes serious detrimental effects on the environment and on water quality. Phosphorous runoff from excessive use of fertilizers can cause algal blooms to grow in nearby water systems ...
Hayder Aneela   +3 more
doaj   +1 more source

Recent high-energy marine events in the sediments of the Lagoa de Óbidos and Martinhal (Portugal): Recognition, age and likely causes [PDF]

open access: yes, 2012
© 2012 Author(s) - This work is distributed under the Creative Commons Attribution 3.0 License.This article has been made available through the Brunel Open Access Publishing Fund.A key issue in coastal hazards research is the need to distinguish ...
Costa, PJM   +4 more
core   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

open access: yesGeological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito   +8 more
wiley   +1 more source

Introduction to Geochemical Modeling

open access: yesEos, Transactions American Geophysical Union, 1995
Modern geochemistry aims to provide an accurate description of geological processes, and a set of models and quantitative rules that help predict the evolution of geological systems. This work is an introduction to the mathematical methods of geochemical modeling, largely based on examples presented with full solutions.
openaire   +2 more sources

Geochemical study of Recoaro Terme and Valli del Pasubio area mineral springs (Vicenza Pre-Alps)

open access: yesAcque Sotterranee
[Article in Italian] The mineral waters of the Vicenza Prealps - “Piccole Dolomiti” area, including the basins of the Agno and Leogra streams (Vicenza province), have been characterized from a geochemical point of view.
Gianpiero Brozzo
doaj   +1 more source

The imprint of thermally induced devolatilization phenomena on radon signal. Implications for the geochemical survey in volcanic areas [PDF]

open access: yes, 2017
Thermal gradients due to magma dynamics in active volcanic areas may affect the emanating power of the substrate and the background level of radon signal.
Galli, Gianfranco   +4 more
core   +1 more source

Geochemical modeling: a review [PDF]

open access: yes, 1981
Two general families of geochemical models presently exist. The ion speciation-solubility group of geochemical models contain submodels to first calculate a distribution of aqueous species and to secondly test the hypothesis that the water is near equilibrium with particular solid phases.
openaire   +2 more sources

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

open access: yesGeological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang   +3 more
wiley   +1 more source

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