POST-CONFERENCE EXCURSION/FIELD COURSE

NOTE THAT THE PRE- AND POST CONFERENCE FIELD-TRIPS ARE ALREADY FULLY BOOKED. SINCE JUNE 6 REGISTRATIONS FOR FIELD TRIPS ARE CLOSED.

CRUST-MANTLE INTERACTIONS DURING SUBDUCTION
OF OCEANIC & CONTINENTAL CRUST

September 8-10, 2013

Minimum participants: 25
Maximum participants: 50

This excursion is aimed at illustrating oceanic and continental tectono-metamorphic sequences and their interactions with ultramafics during Alpine subduction at (U)HP conditions.
Mountain boots, sun glasses, and sun-tan lotion are strongly recommended, as well as warm, water and windproof clothes, since weather can change rapidly in Alpine settings.
The post-conference field trip will end at Revello (Cuneo province), south of Torino on Sept, 10 most likely, middle – to late – afternoon. We are planning to organize a bus transfer (about one hour) to Torino to let partecipants being closer to both Turin airport and rail station.

September 9, 2013
The Monviso meta-ophiolite Complex: HP metamorphism of oceanic crust & interactions with ultramafics

Altitude: 2000-2500 m a.s.l.
Elevation gain (on foot): ca. 500 m along an easy path
Field leaders: Samuel Angiboust, Gianni Balestro, Daniele Castelli, Roberto Compagnoni, Simona Ferrando, Bruno Lombardo.

The first Post-Conference excursion is dedicated to the visit of the tectono-metamorphic sequences of the Monviso meta-ophiolitic massif. The Monviso Massif is one of the best preserved relics of oceanic crust in the western Alps that formed during opening of the Mesozoic western Alpine Tethys and that underwent HP metamorphism during Alpine subduction. This fieldtrip gives the almost unique chance to see and appreciate different portions of the ancient ocean along a mountain trail. Among the various lithologies, we will see serpentinite, Mg-Al and Fe-Ti metagabbro, eclogite, metabasite, metasediments and minor metaperidotite.
The fieldtrip itinerary is located in a high mountain landscape in front of the pyramid of Monviso (3841 m), which is the symbol of the Cottian Alps. The excursion will start from the spring of the Po river at Pian del Re and will reach three spectacular mountain lakes (Lago Fiorenza, Lago Chiaretto and Lago Superiore), through a typical glacial landscape.


September 10, 2013

Metasomatism from & to ultramafics: the UHP continental Brossasco-Isasca Unit

Altitude: 400-1000 m a.s.l.
Elevation gain (on foot): less than 100 m
Field leaders: Daniele Castelli, Roberto Compagnoni, Simona Ferrando, Chiara Groppo,  Franco Rolfo

The excursion proposes a “petrographic” itinerary in the core of the world-famous UHP Brossasco-Isasca Unit (Dora-Maira Massif), allowing to observe the most spectacular evidence of both its pre-Alpine and Alpine metamorphic evolution. We will visit the famous pyrope-bearing whiteschist outcrop of Case Ramello (south of Case Parigi) where coesite was first discovered in continental crust, a spectacular metagranite with UHP coronitic mineral assemblage and an exceptionally well preserved relict of pre-Alpine igneous intrusive contact (basement xenoliths within metagranitoids).

The Geological Fieldtrip GUIDE of the post-Conference excursion can be downloaded (“Scarica la pubblicazione”) at:
http://www.isprambiente.gov.it/it/pubblicazioni/periodici-tecnici/geological-field-trips/documenti-gft/gft_2014_6_1_3.pdf

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