Results 201 to 210 of about 149,067 (320)

Problems and Solutions when Quantifying Nitrogen in Silicate and Oxide Minerals and Glasses Using Electron Probe Microanalysis

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points The challenges of quantifying nitrogen in silicates by EPMA are explained and assessed. Using a set of known and newly synthesised reference materials, we demonstrate a method for obtaining accurate nitrogen mass fractions in most samples.
Eleanor R. Mare   +8 more
wiley   +1 more source

Improved Precision and Reference Materials for Stable Carbon Isotope Measurement in Basaltic Glasses using Secondary Ion Mass Spectrometry

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points High‐precision measurement results for δ13C in basaltic glasses were achieved down to 25 μg g‐1 CO2 using a refined measurement procedure via large‐geometry SIMS. Three new hydrous basaltic glasses (ETNA24, ETNA32, ETNA36) were established as reference materials.
Joshua Shea   +14 more
wiley   +1 more source

Multi‐Purpose Data Worth Assessment of a Surface Water‐Groundwater and Nitrogen Transport Model

open access: yesGroundwater, EarlyView.
Abstract Understanding which hydrological data types provide the most valuable information for models is crucial, given the limitations of data availability. This study applies data worth analysis to evaluate the impact of various observation types on predictive uncertainty in a coupled SWAT‐MODFLOW‐RT3D model simulating water flows and nitrate ...
Patrick Durney   +3 more
wiley   +1 more source

High‐Pressure Na‐Ca Carbonates in the Deep Carbon Cycle

open access: yesGeophysical Monograph Series, Page 127-136., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Sergey Rashchenko   +2 more
wiley  

+4 more sources

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