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Three-dimensional distribution of primary melt inclusions in garnets by X-ray microtomography by Matteo Parisatto; Alice Turina; Giuseppe Cruciani; Lucia Mancini; Luca Peruzzo; Bernardo Cesare is a Earth and Planetary Sciences article available to read on EtoBox.

What is Three-dimensional distribution of primary melt inclusions in garnets by X-ray microtomography about?

X-ray computed microtomography (X-μCT) is applied here to investigate in a non-invasive way the three-dimensional (3D) spatial distribution of primary melt and fluid inclusions in garnets from the metapelitic enclaves of El Hoyazo and from the migmatites of Sierra Alpujata, Spain. Attention is focused on a particular case of inhomogeneous distribution of inclusions, characterized by inclusion-rich cores and almost inclusion-free rims (i.e., zonal arrangement), that has been previously investigated in detail only by means of 2D conventional methods. Different experimental X-μCT configurations, both synchrotron radiation-and X-ray tube-based, are employed to explore the limits of the technique. The internal features of the samples are successfully imaged, with spatial resolution down to a few micrometers. By means of dedicated image processing protocols, the lighter melt and fluid inclusions can be separated from the heavier host garnet and from other non-relevant features (e.g., other mineral phases or large voids). This allows evaluating the volumetric density of inclusions within spherical shells as a function of the radial distance from the center of the host garnets. The 3D spat

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Author

Matteo Parisatto; Alice Turina; Giuseppe Cruciani; Lucia Mancini; Luca Peruzzo; Bernardo Cesare

Published

2018

Language

EN

Field

Earth and Planetary Sciences (Physical Sciences)