ResourceType

Dataset

DOI

https://doi.org/10.7936/fn25-bp23

Grant/Award Number and Agency

Earth Sciences Instrumentation and Facilities (EAR/IF) Earth Sciences Instrumentation and Facilities (EAR/IF)

funderName

National Science Foundation (NSF)

awardNumber

NSF EAR-1848824

Abstract

With the recognition that the mineral talc is common in the cores of many exhumed faults, it has been suggested that talc may be important to the dynamics and modulation of slip in active fault zones. Talc’s wide stability field allows it to persist both at shallow depths and deep into subduction zones and experimental data suggest that it is also rheologically weak. To understand the behaviour of polycrystalline talc at conditions relevant to a subduction zone environment, we conducted a series of high-strain torsion experiments on natural talc at high pressure (1 GPa) and temperatures (450-500 °C). Scanning Transmission Electron Microscope (STEM) imaging revealed a marked decrease in grain size (long axes reduced from ~3-5 mm to

ORCID

Charis Horn: https://orcid.org/0000-0001-5024-2508;

Philip Skemer: https://orcid.org/0000-0002-6702-1098

Rights

http://creativecommons.org/licenses/by/4.0/

Size

336 kB

Share

COinS
 

Publication Date

2023