Results 91 to 100 of about 5,658 (224)

Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS

open access: yesGeostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.
Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro   +7 more
wiley   +1 more source

Geochemical study of the Solchiaro (Procida Island,Campi Flegrei) eruptive products by microthermometry and microanalyses of fluid and melt inclusions.

open access: yes, 2009
This study presents the work I have done during the 4 years of a PhD program that was part of the internationalization programme of the Italian research system approved by the Ministero della Ricerca e dell’Università (MIUR) between the Università degli ...
Esposito, Rosario
core  

Logarithmic growth of dikes from a depressurizing magma chamber

open access: yes, 2021
Dike propagation is an intrinsically multiphase problem, where deformation and fluid flow are intricately coupled in a fracture process. Here we perform the first fully-coupled simulations of dike propagation in two dimensions, accounting for ...
Elias Heimisson   +3 more
core   +1 more source

Electromagnetic expression of axial magma chambers

open access: yesGeophysical Research Letters, 1989
The electrical conductivity of sea floor materials is a strong function of porosity, pore geometry, fluid content, temperature and percentage of partial melt. These material properties are particularly volatile near the midocean ridge. Tracking electromagnetic eddy currents generated on the sea floor as they diffuse across the ridge can provide images ...
M. E. Everett, R. N. Edwards
openaire   +1 more source

Thermal-mechanical response to an intruding magma chamber

open access: yes, 1992
The thermal-mechanical response of rock at shallow to medium depth beneath the earth\u27s surface has been modeled as a magma body ascends toward it. The overall stress field is calculated by considering the country rock as a viscous fluid, a thermal ...
Arz, Christoph
core   +1 more source

Development and Iterative Design of an educational game “Magma Pop” to teach undergraduate fractional crystallization concepts [PDF]

open access: yesGeoscience Communication
Fractional crystallization and mineralogy are foundational yet challenging topics in undergraduate geoscience education. The M&M's® magma chamber lab is a widely used hands-on activity to illustrate these concepts, but students often focus on ...
S. Saha   +5 more
doaj   +1 more source

The Origin of Co-Magmatic Andesite Enclaves in the Rabor Miocene Pyroxene Andesites, SE Kerman, Iran: Insights from Textural and Mineralogical Composition [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2012
The Miocene pyroxene andesite lava flows are exposed in southeastern edge of Urumieh Dokhtar Magmatic assemblage in Iran. The hypocrystalline andesite in parts contain conspicuous co-magmatic igneous enclaves which are dark grey and occur mostly as ...
S. S. Dargahi
doaj  

Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array

open access: yesGeophysical Research Letters, 2016
The Wudalianchi Volcano Field (WDF) is a typical intraplate volcano in northeast China with generation mechanism not yet well understood. As its last eruption was around 300 years ago, the present risk for volcano eruption is of particular public ...
Zhiwei Li   +6 more
doaj   +1 more source

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