Results 51 to 60 of about 9,211 (194)
Comparing the Weathering Environment of Permian and Modern Antarctic Proglacial Lake Sediments: Mineralogical and Geochemical Study [PDF]
, 2017 The Antarctic continent has been in a polar to subpolar position since the Permian period. Although it has experienced milder climates over this time period as evidenced by corals in the fossil record, Antarctica did undergo extensive glaciation during ...
Brewster, Shelby
core
Groundwater, EarlyView.Abstract Solute transport simulators aiming to accurately describe the transport of charged chemical species in porous media need to account for electrostatic coupling effects. Each ion in pore water possesses a specific electric charge and molecular diffusion coefficient, properties that determine their mobility and the overall charge balance of ...
Rodrigo Pérez‐Illanes +3 more
wiley +1 more source
U-Pb Geochronology, Sr–Nd Geochemistry, Petrogenesis and Tectonic Setting of Gandab Volcanic Rocks, Northeast Iran [PDF]
, 2017 This paper addresses U-Pb geochronology, Sr-Nd geochemistry, petrogenesis and tectonic setting in the Gandab volcanic rocks. The Gandab volcanic rocks belong to the Sabzevar zone magmatic arc (northeastern Iran).
Entezari Harsini, A. +3 more
core +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT Elevated heat flow associated with mafic magmatism in accretionary orogens has often been proposed as a driving mechanism for (ultra)high‐temperature (UHT) metamorphism and anatexis. The Sancheong–Hadong complex, located in the southern Yeongnam Massif, Korea, consists of a ca.
Yuyoung Lee +3 more
wiley +1 more source
Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones
Journal of Metamorphic Geology, EarlyView.ABSTRACT The breakdown of hydrous minerals during subduction results in a densification of the rocks, producing volume changes that can trigger fluid pressure fluctuations and hydrofracturing. These volume changes are controlled by the Clapeyron slope of the reaction and are quantified here using a macroscopic framework that integrates a zero ...
Thorsten Andreas Markmann +1 more
wiley +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT Phase equilibrium modelling offers a powerful quantitative framework for understanding petrological processes. Yet, many studies still rely on qualitative comparisons between natural datasets and these forward modelled predictions to constrain model parameters, commonly pressure–temperature (P–T) conditions.
T. Mackay‐Champion, I. P. Cawood
wiley +1 more source
The 'Maagdentoren' of Zichem (Belgium) : damage assessment of ferruginous sandstone by X-ray tomography [PDF]
, 2010 The ferruginous sandstone of the gothic “Maagdentoren” is suffering from a specific biological deterioration process triggered by perforating activities of mason bees.
Boone, Matthieu +4 more
core +1 more source
A petrological assessment of diamond as a recorder of the mantle nitrogen cycle [PDF]
, 2016 During part of this study, SM was employed at Bristol on NERC grant NE/J008583/1 to Michael J Walter. DH is funded by a DAAD PRIME fellowship. SM is grateful to the Deep Carbon Observatory for funding the fortnightly ‘Deep Carbon’ meeting at the Carnegie
Howell, Daniel, Mikhail, Sami
core +1 more source
Journal of Metamorphic Geology, EarlyView.ABSTRACT Rutile provides a wealth of petrochronological information in metamorphic geology and due to its high stability during processes of the sedimentary cycle, rutile takes a special position in sedimentary provenance analysis. Besides being one of the classical minerals datable using the U–Pb system, rutile incorporates a broad range of trace ...
Jan Schönig +9 more
wiley +1 more source
UV-light-driven prebiotic synthesis of iron–sulfur clusters [PDF]
, 2017 Iron–sulfur clusters are ancient cofactors that play a fundamental role in metabolism and may have impacted the prebiotic chemistry that led to life.
Bonfio, Claudia +13 more
core +1 more source