0000000000536073

AUTHOR

Giorgio Pennacchioni

0000-0002-5956-5327

showing 2 related works from this author

Geoethical education: A critical issue for geoconservation

2013

Some geological outcrops have a special scientific or educational value, represent a geological type locality and/or have a considerable aesthetical/photographic value. Such important outcrops require appropriate management to safeguard them from potentially damaging and destructive activities. Damage done to such rock exposures can include drill sampling by geologist for scientific purposes. In this work, we show how outcrops important to structural geology and petrology can be damaged unnecessarily by drill coring. Unfortunately, regulation and protection mechanisms and codes of conduct can be ineffective. The many resources of geological information available to the geoscientist communit…

Value (ethics)DrillMining engineeringWork (electrical)General Earth and Planetary SciencesEnvironmental planningCoringGeologyGeologist
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Temperature, fluid content and rheology of localized ductile shear zones in subsolidus cooling plutons

2020

Temperature and fluid content are critical parameters that control rock rheology and strain localization in the continental crust. Here, we determine by thermodynamic modelling the urn:x-wiley:02634929:media:jmg12553:jmg12553-math-0004 of localized ductile shearing during cooling of three different granitoid plutons: the Rieserferner and the Adamello plutons in the Italian Alps, and the Lake Edison pluton in the Sierra Nevada—USA. Shear zones exploited precursor joints, associated veins and alteration zones. urn:x-wiley:02634929:media:jmg12553:jmg12553-math-0005 and P−T phase diagram sections were computed with Perple_X in the system MnO−Na2O−CaO −K2O−FeO−MgO−Al2O3−SiO2−H2O−Fe2O3. The phase…

cooling pluton; localized shear zone; rheology; temperature; water fugacitywater fugacity010504 meteorology & atmospheric sciencesPluton[SDU.STU.PE]Sciences of the Universe [physics]/Earth Sciences/PetrographytemperatureGeologylocalized shear zone010502 geochemistry & geophysics01 natural sciencescooling plutonRheology13. Climate actionGeochemistry and Petrologycooling pluton localized shear zone rheology temperature water fugacityrheologyShear zonePetrologyComputingMilieux_MISCELLANEOUSGeology0105 earth and related environmental sciencesJournal of Metamorphic Geology
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