icdp proposal on drilling the ivrea-verbanozone italy

ICDPProposalonDrillingtheIvrea-Verbano zonE,Italy

10th

October2019

OthmarMüntener 1

MattiaPistone2

AlbertoZanetti3

GyörgyHetényi 1

LucaZiberna 4

AndrewGreenwood 5

DIVEWorkshopParticipants

1

2

3

DIVEDRILLING THE

IVREA-VERBANO ZONE

4

School onStructureandCompositionoftheLower ContinentalCrust

5

(Notfunded yet!)

ICDPDIVEWorkshop(May 2017),Baveno,Italy

Ivrea-VerbanoZone(IVZ),Italy

Brack etal.(2010)

Scientific Motivation toDIVE

• Most complete, time-integrated crust-upper mantle archive inthe world (well studied over 50 years)

• Resolving some unknowns of the continental crust–mantletransition

• Unique preserved “true” continental lithospheric section, withno (?) mantle serpentinisation

• Best place for refining global lower crustal models from ageophysical and petrological perspective

• Exploiting the limits of the deep biosphere and fluids, withinferences for exoplanet research

MajorScientific Challenges

• Geochemical/physical Identity = Continental crust compositionand architecture

• Physico-Geochemical Dynamics = Processes forming andmodifying the continental crust through geological time

• In-situ core logging and long-term geophysical monitoring alonga major plate boundary

• Hydrology and microbiology of the continental crust

• Deep biosphere (drilling one of the freshest peridotites onEarth: beginning of serpentinization / carbonation!)

Geological Map oftheIVZ

Brack etal.(2010)

IVZ:Today

Brack etal.(2010),afterRutteretal.(1999)

Early Permian (ca. 280 Ma)

10km

Mantle

30 km

20

10

0

Moho

Low

er C

rust

U

pp

er C

rust

Surface

Surface

Mottarone / Baveno

M.Orfano

Candoglia

M.Massone

Anzola

Premosello Finero

Val d'Ossola

Val Sesia

Valle Cannobina

Middle Jurassic (ca. 170 Ma)

M a f i c C o m p l e x


PFZ

CMB

CMB

Alzo / Roccapietra

Balmuccia

Mantle Moho

West East

Varallo Cannobio

Serie dei Laghi (= Upper Crust)

Ivrea-Verbano Zone (= Lower Crust) Host rocks Intrusive complex

amphibolite

marble

charnockite

granite

diorite (e.g. Val Mastallone) Ceneri gneiss, gneiss minuti

orthogneiss

amphibolite

peridotite + pyroxenite

sill-bt schist (kinzigite), migmatitic gneiss

gt-px-plag granofels

gabbro, gabbro diorite, plag-hbl-cpx granofels, norite

mica schist

gt-sill gneiss (stronalite)

30 km

20

10

0

10km


10km

Mantle

30 km

20

10

0

Moho

Low

er C

rust

U

pp

er C

rust

Surface

Surface

Mottarone / Baveno

M.Orfano

Candoglia

M.Massone

Anzola

Premosello Finero

Val d'Ossola

Val Sesia

Valle Cannobina




PFZ

CMB

CMB

Alzo / Roccapietra

Balmuccia

Mantle Moho

West East

Varallo Cannobio



amphibolite

marble

charnockite

granite


orthogneiss

amphibolite





mica schist


30 km

20

10

0

10km

IVZ:~170Ma

Brack etal.(2010),afterRutteretal.(1999)andSchaltegger &Brack (2007)


10km

Mantle

30 km

20

10

0

Moho

Low

er C

rust

U

pp

er C

rust

Surface

Surface

Mottarone / Baveno

M.Orfano

Candoglia

M.Massone

Anzola

Premosello Finero

Val d'Ossola

Val Sesia

Valle Cannobina




PFZ

CMB

CMB

Alzo / Roccapietra

Balmuccia

Mantle Moho

West East

Varallo Cannobio



amphibolite

marble

charnockite

granite


orthogneiss

amphibolite





mica schist


30 km

20

10

0

10km

IVZ:~280Ma

Brack etal.(2010),afterRutteretal.(1999)andSchaltegger &Brack (2007)


10km

Mantle

30 km

20

10

0

Moho

Low

er C

rust

U

pp

er C

rust

Surface

Surface

Mottarone / Baveno

M.Orfano

Candoglia

M.Massone

Anzola

Premosello Finero

Val d'Ossola

Val Sesia

Valle Cannobina




PFZ

CMB

CMB

Alzo / Roccapietra

Balmuccia

Mantle Moho

West East

Varallo Cannobio



amphibolite

marble

charnockite

granite


orthogneiss

amphibolite





mica schist


30 km

20

10

0

10km


10km

Mantle

30 km

20

10

0

Moho

Low

er C

rust

U

pp

er C

rust

Surface

Surface

Mottarone / Baveno

M.Orfano

Candoglia

M.Massone

Anzola

Premosello Finero

Val d'Ossola

Val Sesia

Valle Cannobina




PFZ

CMB

CMB

Alzo / Roccapietra

Balmuccia

Mantle Moho

West East

Varallo Cannobio



amphibolite

marble

charnockite

granite


orthogneiss

amphibolite





mica schist


30 km

20

10

0

10km

’Supervolcano’

Tectonics oftheIVZ

ECORS-CROP(southernIVZ) NFP20W(centralIVZ)

~NW ~SE

Zingg etal.(1990)

IVZIVZ

AfterSchmid etal.(2017),modified

Geophysics oftheIVZ

Geophysics oftheIVZ

Berckhemer (1969)

Geophysics oftheIVZ

12km

“Imported”Kola

Berckhemer (1969)

Geophysics oftheIVZ

12km

“Imported”Kola Balmuccia

4km

Berckhemer (1969)

TheDIVEMission

LOW

ER C

RUST

MOHO

IVREA BODY

DIVE

DRILLING THEIVREA-VERBANO ZONE

DIVEDRILLING THE

IVREA-VERBANO ZONE LuigiBurlini


Brack etal.(2010)


1

2

3

4Brack etal.(2010)

Cross-sections oftheIVZ

12 3 4

1

2

3

4

B

Proposed Drilling Sites ofDIVEProject

Proposed Drilling Sites

Cross-sections oftheIVZ:Drilling Plan

12 3 4

1

2

3

4

B

Next Steps

• Deep (up to 5-km depth) geophysical site survey (PI: Michael Weber, GFZ-Potsdam):SEismic imaging of the Ivrea ZonE (SEIZE) proposal, submitted to DFG in August 2019Geophysical Campaign in Summer 2020 (if decision is positive in March 2020)

• Ongoing gravity survey and seismo-experiment (Matteo Scarponi & György Hetényi)

• Involvement of local communities and representatives of National Parks / Geoparks

• Submission of the full DIVE Proposal in January 15th 2020

Moreinfosabout DIVE

Visit:

http://www.icdp-online.org/projects/world/europe/ivrea/

ContactthePIs:

[email protected] [email protected]



icdp proposal on drilling the ivrea-verbanozone italy

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