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Data Publication

Microscopic and spectroscopic data of pseudotachylytes and wall rocks from the Moncuni ophiolite

Plümper, Oliver

YoDa Data Repository, Utrecht University, Netherlands

(2020)

We investigated the microstructures and geochemistry of pseudotachylytes found within the ophiolitic peridotites and gabbros from the Moncuni area (Lanzo Ultramafic Massif, Western Alps). The pseudotachylytes preserve dry glass and pristine microlites. The presence of garnet and the static development of eclogite-facies assemblages in local hydrated domains indicate that pseudotachylytes experienced subduction conditions of 600 °C and 2.1 GPa. Samples were investigated using optical and scanning electron microscopic imaging as well as electron backscatter diffraction, Raman and IR spectroscopy, single-crystal X-ray diffraction and microprobe analysis. Based on the analysis of the pseudotachylytes and associated wall-rocks, we suggest that the Moncuni body can be regarded as representative for the rheological behaviour during subduction of seismically active, dry, lithosphere. The data is organised in 8 folders termed Figure X, where X is the figure number in the primary publication. One folder is titled Supplements containing 5 subfolders equivalent to the supplementary material in the primary publication. Detailed information about the files and methods used is given in a readme file.

Keywords


Originally assigned keywords
Natural Sciences Earth and related environmental sciences 15
earthquakes
ophiolite
pseudotachylyte
subduction zone
mylonite
Western Alps
Lanzo Ultramafic Massif
gabbro
peridotite
geothermobarometry
microstructures
multiscale laboratories
EPOS

Corresponding MSL vocabulary keywords
ophiolite
pseudotachylite
subduction
mylonite
mylonite
gabbro
peridotite

MSL enriched keywords
tectonic plate boundary
convergent tectonic plate boundary
obduction
ophiolite
fault rock
pseudotachylite
subduction
metamorphic rock
mylonite
mylonite
igneous rock - intrusive
basic intrusive
gabbro
ultrabasic intrusive
peridotite
eclogite
minerals
silicate minerals
nesosilicates
garnet
Earth's structure
lithosphere
equipment
electron probe micro-analyzer
Apparatus
microchemical analysis
electron probe micro analyser
Technique
imaging (3D)
computed tomography (CT)
X-ray diffraction
chemical and mineralogical analysis
Raman spectrometry - chemistry and mineralogy
crystal structure analysis
electron diffraction
electron backscatter diffraction (EBSD)
Raman spectrometry - crystal lattice

MSL original sub domains

microscopy and tomography

MSL enriched sub domains i

microscopy and tomography
geochemistry


Source publisher

YoDa Data Repository, Utrecht University, Netherlands


DOI

10.24416/UU01-RVRHHE


Authors

Plümper, Oliver

0000-0001-9726-0885

Utrecht University;


Contributers

Pennacchioni, Giorgio

DataCollector

0000-0002-5956-5327

University of Padova;

Bestmann, Michel

DataCollector

0000-0002-8511-8774

GeoZentrum Nordbayern;

Notini, Luca

DataCollector

University of Genova;

Nimis, Paolo

DataCollector

0000-0003-3779-9250

University of Padova;

Faccenda, Manuele

ProjectMember

0000-0001-7717-5931

University of Padova;

Nestola, Fabrizio

DataCollector

0000-0002-4875-5125

University of Padova;

Scambelluri, Marco

DataCollector

0000-0003-4445-1308

Utrecht University;


References

Pennacchioni, G., Scambelluri, M., Bestmann, M., Notini, L., Nimis, P., Plümper, O., Faccenda, M., & Nestola, F. (2020). Record of intermediate-depth subduction seismicity in a dry slab from an exhumed ophiolite. Earth and Planetary Science Letters, 548, 116490. https://doi.org/10.1016/j.epsl.2020.116490

10.1016/j.epsl.2020.116490

IsSupplementTo


Citiation

Plümper, O. (2020). Microscopic and spectroscopic data of pseudotachylytes and wall rocks from the Moncuni ophiolite. Utrecht University. https://doi.org/10.24416/UU01-RVRHHE


Collection Period

2015-10-01 - 2018-10-31


Geo location(s)

7.409973°E, 45.050002°N

7.412997°E, 45.047559°N

7.410229°E, 45.049044°N

7.410035°E, 45.050001°N

7.412919°E, 45.048250°N

7.410033°E, 45.049389°N