Microscopic evidence of stishovite generated in low‐pressure shock experiments on porous sandstone: Constraints on its genesis

It has been almost exactly half a century since the first synthesis of stishovite in shock experiments on quartz was reported, but its formation conditions during shock is still under debate. Here, we present direct transmission electron microscopic observation of stishovite within material recovere...

Full description

Saved in:
Bibliographic Details
Published in:Meteoritics & planetary science 2017-07, Vol.52 (7), p.1449-1464
Main Authors: Mansfeld, Ulrich, Langenhorst, Falko, Ebert, Matthias, Kowitz, Astrid, Schmitt, Ralf Thomas
Format: Article
Language:English
Subjects:
Amplification
Coesite
Cooling
Cooling rate
Crystallization
Crystals
Experiments
Glass
Liquidus
Low pressure
Nucleation
Porous materials
Quartz
Sandstone
Silica
Silicon dioxide
Spots
Stishovite
Supercooling
Veins
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:It has been almost exactly half a century since the first synthesis of stishovite in shock experiments on quartz was reported, but its formation conditions during shock is still under debate. Here, we present direct transmission electron microscopic observation of stishovite within material recovered from high‐explosive shock experiments on porous sandstone shocked at 7.5 and 12.5 GPa. Our observations allow for new conclusions on the genesis of stishovite in a close‐to‐nature environment. The formation of stishovite in short‐time shock experiments proves that its crystallization is ultrafast (
ISSN:1086-9379
1945-5100
DOI:10.1111/maps.12867