Data Publication

Experimental logs and analysis of olivine polymorphs and MORB (Mid-Ocean Ridge Basalt) composition garnetite samples recovered from high-pressure faulting experiments

Dobson, David | Xie, Longian | Xu, Fang | Marquardt, Katharina

NERC EDS National Geoscience Data Centre

(2024)

Descriptions

Multi-anvil experiments were performed both in static and deformation geometries on olivine polymorphs and MORB (Mid-Ocean Ridge Basalt) -composition garnetite. Faults were induced by uniaxial compression in both garnetite and wadsleyite but only the garnetite showed evidence of thermal run away to melting. These results suggest that strain localisation by thermal feedback might be an important mechanism for triggering deep earthquakes in the crustal portion of subducted slabs in the deeper transition zone (~500-660 km depth).

Keywords


Originally assigned keywords
deep seismicity
remote triggering
frictional heating
thermal runaway
garnet

Corresponding MSL vocabulary keywords
frictional heating
frictional heating
garnet

MSL enriched keywords
Measured property
temperature change
frictional heating
Inferred deformation behavior
microphysical deformation mechanism
frictional heating
minerals
silicate minerals
nesosilicates
garnet
igneous rock - extrusive
basic extrusive
basalt
olivine
tectonic plate boundary
divergent tectonic plate boundary
plate spreading
mid-ocean ridge
Apparatus
deformation testing
compression testing
uniaxial compression apparatus
multi-anvil
strain
Measured property
strain
Earth's structure
Earth crust

Metadata


MSL enriched sub domains

rock and melt physics
analogue modelling of geologic processes

Source

https://www2.bgs.ac.uk/nationalgeosciencedatacentre/citedData/catalogue/7b24d391-ce38-42e2-a9d7-f2704d4ccf1f.html

Source publisher

NERC EDS National Geoscience Data Centre

DOI

10.5285/7b24d391-ce38-42e2-a9d7-f2704d4ccf1f

Creators

Dobson, David
Personal
University College London
Xie, Longian
Personal
University College London | Center for High Pressure Science & Technology Advanced Research
Xu, Fang
Personal
University College London | Zhejiang University
Marquardt, Katharina
Personal
University of Oxford

Citation

Dobson, D., Xie, L., Xu, F., & Marquardt, K. (2024). Experimental logs and analysis of olivine polymorphs and MORB (Mid-Ocean Ridge Basalt) composition garnetite samples recovered from high-pressure faulting experiments [Data set]. NERC EDS National Geoscience Data Centre. https://doi.org/10.5285/7B24D391-CE38-42E2-A9D7-F2704D4CCF1F


Dates

Available 2024-11-07

Language

- no language entry found -


Funding References

Funder Name Natural Environment Research Council
Funder Identifier https://doi.org/10.13039/501100000270
Award Number NE/X009807/1
Award Title Remote Triggering of Deep Earthquakes

Locations

- no geo-locations found -