Deformation-resembling microstructure created by fluid-mediated dissolution-precipitation reactions

Liene Spruzeniece, Sandra Piazolo, Helen E. Maynard-Casely

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Deformation microstructures are widely used for reconstructing tectono-metamorphic events recorded in rocks. In crustal settings deformation is often accompanied and/or succeeded by fluid infiltration and dissolution-precipitation reactions. However, the microstructural consequences of dissolution-precipitation in minerals have not been investigated experimentally. Here we conducted experiments where KBr crystals were reacted with a saturated KCl-H2O fluid. The results show that reaction products, formed in the absence of deformation, inherit the general crystallographic orientation from their parents, but also display a development of new microstructures that are typical in deformed minerals, such as apparent bending of crystal lattices and new subgrain domains, separated by low-angle and, in some cases, high-angle boundaries. Our work suggests that fluid-mediated dissolution-precipitation reactions can lead to a development of potentially misleading microstructures. We propose a set of criteria that may help in distinguishing such microstructures from the ones that are created by crystal-plastic deformation.

LanguageEnglish
Article number14032
Pages1-9
Number of pages9
JournalNature Communications
Volume8
DOIs
Publication statusPublished - 27 Jan 2017

Fingerprint

Minerals
dissolving
Dissolution
microstructure
Microstructure
Fluids
fluids
Plastics
minerals
Crystals
infiltration
Reaction products
Infiltration
crystal lattices
Crystal lattices
reaction products
plastic deformation
crystals
Plastic deformation
Rocks

Bibliographical note

Copyright the Author(s) 2017. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Cite this

Spruzeniece, Liene ; Piazolo, Sandra ; Maynard-Casely, Helen E. / Deformation-resembling microstructure created by fluid-mediated dissolution-precipitation reactions. In: Nature Communications. 2017 ; Vol. 8. pp. 1-9.
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Deformation-resembling microstructure created by fluid-mediated dissolution-precipitation reactions. / Spruzeniece, Liene; Piazolo, Sandra; Maynard-Casely, Helen E.

In: Nature Communications, Vol. 8, 14032, 27.01.2017, p. 1-9.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Spruzeniece, Liene

AU - Piazolo, Sandra

AU - Maynard-Casely, Helen E.

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