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2015 | OriginalPaper | Buchkapitel

13. Seismic Detection of Post-perovskite Inside the Earth

verfasst von : Laura Cobden, Christine Thomas, Jeannot Trampert

Erschienen in: The Earth's Heterogeneous Mantle

Verlag: Springer International Publishing

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Abstract

Since 2004, we have known that perovskite, the most abundant mineral in the lower mantle, has the capacity to transform to a denser structure, post-perovskite, if subjected to sufficiently high temperature and pressure. But does post-perovskite exist inside the Earth? And if it does, do we have the resources to locate it seismically? In this chapter, we present an overview of what we know about the perovskite-to-post-perovskite phase transformation from mineral physics, and how this can be translated into seismic structure. In light of these constraints, we evaluate the current lines of evidence from global and regional seismology which have been used to indicate that post-perovskite is likely present in the deep mantle.

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Vorheriges Kapitel Seismic Detections of Small-Scale Heterogeneities in the Deep Earth

Nächstes Kapitel Thermally Dominated Deep Mantle LLSVPs: A Review

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Titel: Seismic Detection of Post-perovskite Inside the Earth
verfasst von: Laura Cobden
Christine Thomas
Jeannot Trampert
Verlag: Springer International Publishing
Buch: The Earth's Heterogeneous Mantle
Print ISBN: 978-3-319-15626-2

Electronic ISBN: 978-3-319-15627-9

Copyright-Jahr: 2015
DOI: https://doi.org/10.1007/978-3-319-15627-9_13