Research Article| June 01, 2008 Discovery of Post-Perovskite and New Views on the Core-Mantle Boundary Region Kei Hirose; Kei Hirose 1Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro Tokyo 152-8551, Japan E-mail: kei@geo.titech.ac.jp Search for other works by this author on: GSW Google Scholar Thorne Lay Thorne Lay 2Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA E-mail: thorne@pmc.ucsc.edu Search for other works by this author on: GSW Google Scholar Author and Article Information Kei Hirose 1Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro Tokyo 152-8551, Japan E-mail: kei@geo.titech.ac.jp Thorne Lay 2Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA E-mail: thorne@pmc.ucsc.edu Publisher: Mineralogical Society of America First Online: 09 Mar 2017 Online ISSN: 1811-5217 Print ISSN: 1811-5209 © 2008 by the Mineralogical Society of America Elements (2008) 4 (3): 183–189. https://doi.org/10.2113/GSELEMENTS.4.3.183 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Kei Hirose, Thorne Lay; Discovery of Post-Perovskite and New Views on the Core-Mantle Boundary Region. Elements 2008;; 4 (3): 183–189. doi: https://doi.org/10.2113/GSELEMENTS.4.3.183 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyElements Search Advanced Search Abstract A phase transition of MgSiO3 perovskite, the most abundant component of the lower mantle, to a higher-pressure form called post-perovskite was recently discovered for pressure and temperature conditions in the vicinity of the Earth's core-mantle boundary. This discovery has profound implications for the chemical, thermal, and dynamical structure of the lowermost mantle called the D” region. Several major seismological characteristics of the D” region can now be explained by the presence of post-perovskite, and the specific properties of the phase transition provide the first direct constraints on absolute temperature and temperature gradients in the lowermost mantle. Here we discuss the current understanding of the core-mantle boundary region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.