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Geological Description (Formation (Temperatures: Raman Spectroscopy (Rahl)…
Geological Description
Tectonic setting
Situated above Hellenic subduction zone
Hellenic trench just south
Comprised of 2 nappe pile groups
Upper Group
Lower (HP-LT)
Geological Units
Upper Goup
Pindos
Cherts
Mesozoic to early tertiary
Deep-water carbonates
Overlain by Flysch
Tripolitza
Shallow Water Carbonates
Accreted by Adria microcontinent during collision
Overlain by Flysch
Triasic to eocene
Turbidites
Some evidence of metamorphism
Uppermost
Sub catagories
Undifferentiated melange
Ophiolites
HGM Rocks
Jurrassic & Cretaceous
Serpentinised mantle fragments
Ocean pillow basalts (Pindos Ocean)
HT Amphibolites
Marble
Gabbros
Cherts
Deep water carbonates
Lower Group
(HP-LT)
PQ
Carboniferous - mid-triassic
Includes local evaporites and carbonates
Clastic Sedimentary rocks
Plattenkalk
Chert limestone
Silicalastic rocks
Deep water & shallow water carbonates
Permian - Eocene
Incl. above: minor calcarious flysch from Oligocene
Geolgraphy
Greek Mediterranean island
Site locations
Talea Ori Window
Agios Fanourios
Central & northern Crete
Formation
Collision of Eurasia plate and Adria Microcontenent
Oligocene to Miocene
HP-LT Rocks
sub-ducted pre-Miocene
Started in North (cyclades), migrated south
Temperatures: Raman Spectroscopy (Rahl)
Upper: 180°C - 340 °C
Lower: 230°C - 500°C
Pressure & Temp. Increase from East to west
Peak metamorphism
Constrained to 12 Kbar (parageneses of mica Chloritoid and ferro-Carpholite
34 km
Obliquely exhumed
through subduction channel
Negative bouancy
Slab roll back
Extension in back arc
Detachment formation
Resided 4 - 7 km below
Increased erosion
Talea Ori Window
Horst block
Formed through extensional detachment
Exposes Lower Group
Study the Southern Border between Damasta and MArathos
Area of interest