Suche
Anzeige der Dokumente 401-410 von 567
Intrusive Magmatism Strongly Contributed to the Volatile Release Into the Atmosphere of Early Earth
(
- Geochemistry, Geophysics, Geosystems
, 2022-11-29)
Magmatic volatile release was crucial for the build‐up and composition of the early atmosphere and thus for the origin and evolution of life. Even though the rate of intrusive to extrusive magma production on Earth is high, ...
A novel method for the quantitative morphometric characterization of soluble salts on volcanic ash
(
- Bulletin of Volcanology
, 2021-12-06)
Formation of soluble sulfate and halide salts on volcanic ash particles via syn-eruptive interactions between ash surfaces and magmatic gases is a ubiquitous phenomenon in explosive eruptions. Surficial salts may be rapidly ...
The Interface Between Magma and Earth's Atmosphere
(
- Geochemistry, Geophysics, Geosystems
, 2022-12-01)
Volatiles released from magma can form bubbles and leave the magma body to eventually mix with atmospheric air. The composition of those volatiles, as derived from measurements made after their emission, is used to draw ...
Use of electron backscatter diffraction patterns to determine the crystal lattice. Part 3. Pseudosymmetry
(
- Journal of Applied Crystallography
, 2023-02-24)
A pseudosymmetric description of the crystal lattice derived from a single wide‐angle Kikuchi pattern can have several causes. The small size (<15%) of the sector covered by an electron backscatter diffraction pattern, the ...
The composition of subduction zone fluids and the origin of the trace element enrichment in arc magmas
(
- Contributions to Mineralogy and Petrology
, 2021-06-15)
The partitioning of major and trace elements between eclogite and aqueous fluids with variable salinity was studied at 700–800 °C and 4–6 GPa in piston cylinder and multi anvil experiments. Fluid compositions were determined ...
POWTEX visits POWGEN
(
- Journal of Applied Crystallography
, 2023-04-25)
<p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">The high‐intensity time‐of‐flight (TOF) neutron diffractometer POWTEX for powder and texture analysis is currently being built prior to operation in the eastern ...
Combining reverse Monte Carlo analysis of X‐ray scattering and extended X‐ray absorption fine structure spectra of very small nanoparticles
(
- Journal of Applied Crystallography
, 2022-12-23)
Finite size effects in partial pair distribution functions generate artefacts in the scattering structure factor and scattering intensity. It is shown how they can be overcome using a binned version of the Debye scattering ...
Phase‐Field Simulation of Texture Evolution in Magmatic Rocks
(
- Journal of Geophysical Research: Solid Earth
, 2023-05-24)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">The tool of phase‐field modeling for the prediction of chemical as well as microstructural ...
Stable Carbon Isotope Signature of Methane Released From Phytoplankton
(
- Geophysical Research Letters
, 2023-06-20)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">Aquatic ecosystems play an important role in global methane cycling and many field studies ...
The Temperature and Composition of the Mantle Sources of Martian Basalts
(
- Geophysical Research Letters
, 2023-06-08)
<title xmlns:mml="http://www.w3.org/1998/Math/MathML">Abstract</title><p xmlns:mml="http://www.w3.org/1998/Math/MathML" xml:lang="en">The composition of basaltic melts in equilibrium with the mantle can be determined for ...