UE Field placement in deep domain

This training course aims to illustrate, through the study of rocks of the Maures massif, the fundamental notions exposed in the course of magmatic and metamorphic petrology, and to apply the techniques of characterization of deep crustal deformed rocks. In the field, particular attention will be paid to (1) textural and mineralogical description leading to rock identification; (2) characterization of the source and type of magmatism; (3) identification of protoliths and characterization of the degree of metamorphism; and (4) recognition of structural objects and deformation analysis.

A geological cross-section will be drawn through a varied set of rocks, from the surface detrital deposits to the base of the lower crust. The Variscan geological history of the Maures massif will be completed by the study of the Permian volcanism of the neighbouring Esterel massif.

Hourly volume:

Field: 27h

• Use fundamental concepts and multidisciplinary analytical tools (tectonics, structural geology, magmatic and metamorphic petrology, mapping, microstructural analyses) to conduct a comprehensive examination of rocks and orogenic structures encountered in the field.
• To provide students with the techniques of field geology in deep crustal areas, including: reading and interpretation of topographic and geological maps, observation and description of rocks and outcrops, measurement of structural objects (foliations, lineations, folds, faults, shear zones, ...) and their transfer by stereographic projections, the survey of section, etc ... ;
• Introduce the concepts of scale changes in geology (from mineral to tectonic plate) and show the importance of multidisciplinary data integration.

HAT306T UE Minerals and rocks

HAT301T UE Sedimentary geology, tectonics and cartography

HAT302T UE Structural Geology

HAT409T STAG Field placement

HAT402T UE Cartography

HAT405T UE Geology of France

HAT510T UE Endogenous Petrology

HAT505T UE Major tectonic systems

Recommended prerequisites:

HAT102T UE Geology

HAT101T UE The Earth and its resources

HAV213T UE Earth Evolution and Regional Geological History

Continuous assessment: field reports, oral, bibliographic report...

Description of the themes/manipulations addressed during your field trip(s) and details of the destinations/sites

Locations: Massif des Maures (magmatic and metamorphic rocks) and Esterel (volcanic rocks)

• Fundamental notions (L2-L3 level) of magmatic and metamorphic petrology, and tectonics/structural geology in ductile domain.
• Textural and mineralogical description leading to the identification of rocks 
• Characterization of the source and type of magmatism 
• Identification of protoliths and characterization of the degree of metamorphism
• Recognition of structural objects and analysis of ductile deformation
• Geological section through a varied set of orogenic rocks
• Variscan geological history of the Maures massif
• Study of the Permian volcanism of the Esterel massif.

Know how to identify an endogenous rock by characterizing its texture and mineralogy

Know how to discriminate the source of a magmatic rock and the protolith of a metamorphic rock

Know how to determine a metamorphic gradient at the scale of a massif

To master the techniques of field geology in deep crustal domains

Know how to make a geological section through magmatic and metamorphic rocks

Know how to identify the structural objects of ductilely deformed rocks

Know how to analyze ductile deformation regimes and understand the polyphase of tectonic events