This study focuses on syn-tectonic tonalites (c. 300 Ma) outcropping in the south-western part of the Serre Batholith (southern Italy) near the Palmi village (N 38°21’51”; E 15°50’18”). We used the shape of mafic microgranular enclaves (MME) hosted into tonalites to reconstruct the stress field orientation at the time of pluton emplacement. This strain analyses has been also coupled with the main orientation of felsic dykes, which sharply crosscut MME, collected by means of both field- and UAV-survey (drone model DJI-Mavic2Pro). The reconstruction of a 3D virtual outcrop model (Agisoft Metashape software) permitted us establishing the spatial orientation of strain markers (MME and dykes). On this basis, we reconstructed a maximum stress oriented N5°/25° (dip direction/dip) at the time of MME injection, which can be correlated to the activity of a late-Variscan shear zone in the crystalline basement of Calabria roughly E-W oriented in the currently geographic coordinates. Our findings contribute to a better reconstruction of late-Variscan tectonic framework in the Mediterranean realm characterized by a complex network of crustal scale shear zones.

Strain analysis of syn-tectonic Late Variscan MME and host tonalites (Serre Batholith, Italy) by means of field- and UAVsurvey

Eugenio Fazio
Primo
Writing – Review & Editing
;
Patrizia Fiannacca
Secondo
Writing – Original Draft Preparation
;
Lorenzo Tomaselli
Investigation
;
Damiano Russo
Membro del Collaboration Group
;
Rosolino Cirrincione
Penultimo
Supervision
;
2021-01-01

Abstract

This study focuses on syn-tectonic tonalites (c. 300 Ma) outcropping in the south-western part of the Serre Batholith (southern Italy) near the Palmi village (N 38°21’51”; E 15°50’18”). We used the shape of mafic microgranular enclaves (MME) hosted into tonalites to reconstruct the stress field orientation at the time of pluton emplacement. This strain analyses has been also coupled with the main orientation of felsic dykes, which sharply crosscut MME, collected by means of both field- and UAV-survey (drone model DJI-Mavic2Pro). The reconstruction of a 3D virtual outcrop model (Agisoft Metashape software) permitted us establishing the spatial orientation of strain markers (MME and dykes). On this basis, we reconstructed a maximum stress oriented N5°/25° (dip direction/dip) at the time of MME injection, which can be correlated to the activity of a late-Variscan shear zone in the crystalline basement of Calabria roughly E-W oriented in the currently geographic coordinates. Our findings contribute to a better reconstruction of late-Variscan tectonic framework in the Mediterranean realm characterized by a complex network of crustal scale shear zones.
2021
: Shear-zone, MME, syn-tectonic pluton emplacement, UAV-survey, 3D digital outcrop model, tonalite
File in questo prodotto:
File Dimensione Formato  
resume_rstlyon2021_Fazio_et_al_def.pdf

accesso aperto

Descrizione: Lyon_2021_RST_poster_Fazio_et_al
Tipologia: Abstract
Dimensione 338.32 kB
Formato Adobe PDF
338.32 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/515128
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact