5. 07 field trip to apennines, italy 1st – 11th may 2010 leader: dr alex whittaker 1st – 11th...
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5. 07 Field Trip to Apennines, Italy5. 07 Field Trip to Apennines, Italy
1st – 11th May 2010
Leader: Dr Alex Whittaker
1st – 11th May 2010
Leader: Dr Alex Whittaker
DemonstratorsDemonstrators Dr Jon Hill (Imperial) Dr Gillian McCay (Edinburgh)
Grace Cairns (Imperial)
Nikolas Michael (Imperial)
Dr Jon Hill (Imperial) Dr Gillian McCay (Edinburgh)
Grace Cairns (Imperial)
Nikolas Michael (Imperial)
ItineraryItinerary 1 May: Coach departs RSM, 6am. Meet at
Stansted airport departures lounge, flight FR 124, depart 09.55. Arrive Ancona 13.10, drive to Sigillo, overnight at Hotel Dominus
3 days on the thrust belt and its synorogenic sediments, Mesozoic passive margin and deformation, based at Scheggia
Move to Perugia (2 nights) via famous K-T boundary at Gubbio. 1 day on “Tuscan flysch”
Drive to Piombino and ferry to Elba - igneous intrusions, oceanic sediments/lavas and deformation of Elba island (3 nights)
20 May: Depart Elba by ferry, driver to Pisa, depart Pisa airport FR 589 at 22.15, arrive Stansted 23.30; Coach transfer to RSM
1 May: Coach departs RSM, 6am. Meet at Stansted airport departures lounge, flight FR 124, depart 09.55. Arrive Ancona 13.10, drive to Sigillo, overnight at Hotel Dominus
3 days on the thrust belt and its synorogenic sediments, Mesozoic passive margin and deformation, based at Scheggia
Move to Perugia (2 nights) via famous K-T boundary at Gubbio. 1 day on “Tuscan flysch”
Drive to Piombino and ferry to Elba - igneous intrusions, oceanic sediments/lavas and deformation of Elba island (3 nights)
20 May: Depart Elba by ferry, driver to Pisa, depart Pisa airport FR 589 at 22.15, arrive Stansted 23.30; Coach transfer to RSM
What we see….What we see….
Sediments carbonates, fluvial
deposits and turbidites
Sediments carbonates, fluvial
deposits and turbidites
What we see….What we see….
Igneous and Metamorphic Igneous and Metamorphic
Monte CapannePluton
Punto Zuccale
Pillow Basalts
Schists
Intrusives
Geology of Elba
Aim of tripAim of trip Idea is to produce an integrated geological
history of the Apennines from field observations
Not just about interpreting outcrops as moderately diverting but ultimately random bits of rock…..
Idea is to produce an integrated geological history of the Apennines from field observations
Not just about interpreting outcrops as moderately diverting but ultimately random bits of rock…..
Tectonic setting of the Apennines Tectonic setting of the Apennines Shortening and extension in the Western Mediterranean
Shortening and extension in the Western Mediterranean
Iberia
Africa
c. 35 Ma
Flysch BasinIberian & AfricanPassive Margins
?
Tethyan Ocean
From Lonergan & White, Tectonics, 1997
500 km
C. 18 MA
0 Ma
5 Ma9 Ma
Rapid Roll-back
c. 22-15 Ma
Back -Arc extending region
Flysch Basins
Internal ZonesExternal Zones
Shortening
Iberia
Africa
New oceanic crust
From Lonergan & White, Tectonics, 1997
MantleFlow
F
Subduction ZoneRoll-back
ExtensionA A'
A A'
Section:
Plan View:
From Lonergan & White, Tectonics, 1997
Explanation
Extension in the ApenninesExtension in the Apennines
Now active extension; up to 6mm/yr stretching
Now active extension; up to 6mm/yr stretching
Whittaker et al., 2008
Extensional deformation in the ApenninesExtensional deformation in the Apennines
Extension drives deformation –due to eastward movement of rising aesthenospheric plume in Tyrrhenian Sea
Continuous eastward thrusting of crust drives deformation (extension is minor)
Extension and shortening driven by roll-back of subducting slab?
Extension drives deformation –due to eastward movement of rising aesthenospheric plume in Tyrrhenian Sea
Continuous eastward thrusting of crust drives deformation (extension is minor)
Extension and shortening driven by roll-back of subducting slab?
shorteningExtension
shortening shorteningExtensionmountainbelt
Convective removal of thickened lithospheric root
Delamination of lithospheric mantle
Timing of deformation and volcanismTiming of deformation and volcanism
Timing of
Thrusting
Timing of
Thrusting
Key Questions:Key Questions:
What field data can be observed that support or distinguish between these hypotheses?
What implications does the dynamic history of the Apennines have for the timing, locus and style of sedimentation?
How does the igneous and metamorphic geology of Elba fit with the evolution of the Apennine belt?
What do the Apennines tell us about the growth and collapse of mountain belts generally?
Requires synthesis and integration of structural geology, sedimentology, stratigraphy, igneous geology, metamorphic studies
What field data can be observed that support or distinguish between these hypotheses?
What implications does the dynamic history of the Apennines have for the timing, locus and style of sedimentation?
How does the igneous and metamorphic geology of Elba fit with the evolution of the Apennine belt?
What do the Apennines tell us about the growth and collapse of mountain belts generally?
Requires synthesis and integration of structural geology, sedimentology, stratigraphy, igneous geology, metamorphic studies
RoutineRoutine Field visits during day (4 x
9-seater minivans). Fieldwork tasks
include: sketching, structural measurements, logging, sedimentology, petrology etc
Evening work will include: discussion sessions, seminars and group presentations and structural/cross section work. This takes place between 6.45 and 8pm, BEFORE dinner.
Field visits during day (4 x
9-seater minivans). Fieldwork tasks
include: sketching, structural measurements, logging, sedimentology, petrology etc
Evening work will include: discussion sessions, seminars and group presentations and structural/cross section work. This takes place between 6.45 and 8pm, BEFORE dinner.
AssessmentAssessment At least two main
assessed components: 1) Field notebook,
including large-scale sketches
2) Synthesis group presentations, conducted on the Isle of Elba e.g: “Extensional
faulting in the Apennines; observations and interpretations....”
At least two main
assessed components: 1) Field notebook,
including large-scale sketches
2) Synthesis group presentations, conducted on the Isle of Elba e.g: “Extensional
faulting in the Apennines; observations and interpretations....”
LogisticsLogistics We will buy lunches (supplies at supermarkets). All evening
meals, except for two are provided. Breakfasts provided for all days, but note that breakfasts in Italy are not as plentiful as in the UK, so do not expect cereal and lots of bread.
Please make sure you have filled in the medical/personal information form and returned this to Liz Swift; We also require information on any dietary requirements on this form.
Make sure you bring your own medical supplies. In early May the weather can be very variable in Italy. For the
first part of the trip we stay in the mountains - bring warm and waterproof clothing, but also sun screen, hats and sunglasses etc for warm weather.
A towel is required for the Youth Hostel in Perugia
We will buy lunches (supplies at supermarkets). All evening
meals, except for two are provided. Breakfasts provided for all days, but note that breakfasts in Italy are not as plentiful as in the UK, so do not expect cereal and lots of bread.
Please make sure you have filled in the medical/personal information form and returned this to Liz Swift; We also require information on any dietary requirements on this form.
Make sure you bring your own medical supplies. In early May the weather can be very variable in Italy. For the
first part of the trip we stay in the mountains - bring warm and waterproof clothing, but also sun screen, hats and sunglasses etc for warm weather.
A towel is required for the Youth Hostel in Perugia
Please remember . . . . Please remember . . . .
Passport, European Health Insurance Card, any special medical or dietary needs, cash
To bring/pick up:- hardhat, field guidebook, fluorescent vest, HP tablet (shared) and cable
Be sure to bring:- field notebook (+A4 sketching pad), compass-clinometer, digital camera, hand lens, pens, pencils, crayons
You don’t really need a hammer
Passport, European Health Insurance Card, any special medical or dietary needs, cash
To bring/pick up:- hardhat, field guidebook, fluorescent vest, HP tablet (shared) and cable
Be sure to bring:- field notebook (+A4 sketching pad), compass-clinometer, digital camera, hand lens, pens, pencils, crayons
You don’t really need a hammer