Results 71 to 80 of about 79,104 (288)
Primary crustal melt compositions: Insights into the controls, mechanisms and timing of generation from kinetics experiments and melt inclusions [PDF]
, 2017 We explore the controls, mechanisms and timing of generation of primary melts and their compositions, and show that the novel studies of melt inclusions in migmatites can provide important insights into the processes of crustal anatexis of a particular ...
Acosta-Vigil, Antonio +6 more
core +1 more source
Geological Journal, EarlyView.This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura +4 more
wiley +1 more source
Geofluids, 2021 The identification of primary geochemical haloes can be used to predict mineral resources in deep-seated orebodies through the delineation of element distributions.
Zhongping Tao +6 more
doaj +1 more source
Self-gravity, self-consistency, and self-organization in geodynamics and geochemistry [PDF]
, 2005 The results of seismology and geochemistry for mantle structure are widely believed to be discordant, the former favoring whole-mantle convection and the latter favoring layered convection with a boundary near 650 km.
Anderson, Don L.
core
δ13C tracing of dissolved inorganic carbon sources in major world rivers [PDF]
, 2005 δ13C tracing of dissolved inorganic carbon sources in major world ...
Bray, Colin +4 more
core +3 more sources
Geological Journal, EarlyView.Integrated petrographic, mineralogical and geochemical data from the Hastanetepe Pb–Zn deposit (Balya, Türkiye) reveal multi‐stage hydrothermal alteration and a magmatic sulphur source. Fluid inclusion and sulphur isotope results indicate a complex fluid evolution responsible for skarn‐type Pb–Zn mineralization along limestone–dacite contacts ...
Esra Ünal‐Çakır
wiley +1 more source
, 1983 The mathematical formulation· of a one-dimensional, finite-difference compositional simulator is given in this work. The model assumes thermodynamic equilibrium between flowing electrolyte solutions and stationary mineral assemblages, and solves for the mineral identities and compositions and aqueous compositions as a function of both time and position.
openaire +2 more sources
Geological Journal, EarlyView.A classic oil producing interval of the Campos Basin—Macaé Group is revisited through seismic stratigraphic analysis, providing a stratigraphic framework, characteristic depositional and relative time positioning for several complex structural settings.
Renata Alvarenga +12 more
wiley +1 more source
Models of Geochemical Speciation: Structure and Applications
, 2018 Being able to predict the behavior of trace elements in the environment is crucial for environmental risk assessment studies. For this reason, modeling, in addition to experimental methods, has become an indispensable tool to better understand the (bio)-geochemistry of trace elements and the processes involved in their availability, transport and ...
Di Bonito M +2 more
openaire +6 more sources
Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age
Journal of Quaternary Science, EarlyView.ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin +2 more
wiley +1 more source