Program

Peridotite Workshop 2005 [Lanzo, September 27-30, 2005]

 
       Program
  September 27, 2005:
8.25 - 8.30 Welcome and Presentation of the Meeting
8.30 - 9.10 SEGMENTATION IN OMAN OPHIOLITE, IMPLICATIONS FOR FAST SPREADING RIDGES TECTONICS AND HIGH TEMPERATURE HYDROTHERMAL ACTIVITY
A. Nicolas and F. Boudier
9.10 - 9.50 THE DIVERSITY OF DUNITES
F. Boudier and M. Godard
9.50 - 10.30 THE ROLE OF DUNITES FOR EXTRACTION OF MELTS FROM THE MANTLE TO THE OCEANIC CRUST
G. Suhr
10.30 - 10.50 Coffee-break + posters
10.50 - 11.10 PLAGIOCLASE PERIDOTITE AND GABBROIC ROCKS: THERMOCHEMICAL EROSION FOLLOWED BY IGNEOUS CRYSTALLIZATION IN A THICK THERMAL LITHOSPHERE
O. Müntener, G.B. Piccardo, T. Pettke and A. Zanetti
11.10 - 11.30 THE COMPOSITE MANTLE EVOLUTION OF THE ERRO-TOBBIO PERIDOTITE (VOLTRI MASSIF, LIGURIA ALPS, ITALY)
G.B. Piccardo, E. Poggi, F.M. Elter, R.L.M. Vissers and G. Ranalli
11.30 - 11.50 MULTI-STAGE MELT-ROCK INTERACTION IN THE MT.MAGGIORE (CORSICA, FRANCE) OPHIOLITIC PERIDOTITES: MICROSTRUCTURAL AND GEOCHEMICAL RECORDS
E. Rampone, G.B. Piccardo and A.W. Hofmann
11.50 - 12.10 EXTREME STRUCTURAL AND COMPOSITIONAL VARIABILITY IN THE LANZO SOUTH PERIDOTITE DOCUMENTS A COMPOSITE HISTORY OF MELT-ROCK INTERACTION
G.B. Piccardo, A. Zanetti and G. Spagnolo
12.10 - 12.30 GEOCHEMICAL CONSTRAINTS ON THE MULTISTAGE MELT MIGRATION THROUGH
OPHIOLITIC PERIDOTITE OF LANZO SOUTH BODY (WESTERN ALPS)
A. Zanetti, G.B. Piccardo and G. Spagnolo
12.30 - 12.50 TEXTURES, GEOCHEMISTRY AND SIGNIFICANCE OF SHEAR ZONE IN THE PERIDOTITIC MASSIF OF LANZO (ALPS-ITALY)
M-A. Kaczmarek and O. Müntener
12.50 - 13.10 TRACE ELEMENT GEOCHEMISTRY OF MANTLE OLIVINE AND ITS APPLICATION TO GEOTHERMOMETRY
J.C.M. de Hoog and L. Gall
13.10 - 14.20 Lunch buffet + posters
14.20 - 15.00 A REVIEW OF COMPOSITIONS AND TEXTURES OF ABYSSAL PERIDOTITES FROM THE NORTH ATLANTIC AND INDIAN OCEANS. PETROLOGICAL AND GEODYNAMICAL IMPLICATIONS.
M. Seyler
15.00 - 15.40 (to be communicated)
E. Hellebrand et alii
15.40 - 16.00 Coffee-break + posters
16.00 - 16.20 PETROLOGY OF DUNITE IN THE ATLANTIS II FRACTURE ZONE, THE SLOW-SPREADING SOUTHWEST INDIAN RIDGE
T. Morishita, Y. Ishida, S. Arai, T. Matsumoto and H.J.B. Dick
16.20 - 16.40 MELT RE-FERTILIZATION IN HESS DEEP PERIDOTITES
K. Ross, D. Elthon, E. Hellebrand and J.E. Snow
16.40 - 17.00 OCEANIC PERIDOTITES ON MACQUARIE ISLAND: A UNIQUE RECORD OF MANTLE MELTING AND MELT PERCOLATION
A.H. Dijkstra and P.A. Cawood
17.00 - 17.20 INCORPORATION OF SUBCONTINENTAL LITHOSPHERIC MANTLE DURING THE
OPENING OF THE CENTRAL ATLANTIC OCEAN: THE CAPE VERDE CASE STUDY
M. Coltorti, C. Bonadiman, L. Beccaluva and F. Siena
17.20 - 17.40 EXPERIMENTAL HYDROUS PARTIAL MELTING OF HARZBURGITE AT SHALLOW PRESSURES: IMPLICATIONS ON HYDROUS LATE-STAGE MAGMATIC PROCESSES WITHIN THE MANTLE/CRUST TRANSITION OF THE OCEANIC LITHOSPHERE
J. Koepke and S.T. Feig
17.40 - 18.00 THE REGIONAL VARIATION IN THE MANTLE ROCKS OF THE NORTHERN UAE-OMAN OPHIOLITE
M.T. Styles, K. M. Goodenough, B. Thomas, D. Schofield and S. Dare
18.00 - 18.20 MANTLE MELTING AND MINERALISATION DURING SEAFLOOR SPREADING AND SUBDUCTION INITIATION: EVIDENCE FROM THE NORTHERN OMAN-UNITED ARAB EMIRATES OPHIOLITE
S. Dare, J. Pearce, M. Styles, C. MacLeod, I. McDonald, and H. Prichard
  Poster session I
19.30 Dinner and overnight

  September 28, 2005:
8.30 - 9.10 STRUCTURES AND MICROSTRUCTURES OF MANTLE ROCKS: KEYS TO THE RHEOLOGY OF THE LITHOSPHERE
R.L.M. Vissers and M.R. Drury
9.10 - 9.50 SOFTENING OF THE SUBCONTINENTAL LITHOSPHERIC MANTLE BY ASTHENOSPHERE MELTS AND THE CONTINENTAL EXTENSION/ OCEANIC SPREADING TRANSITION
G. Ranalli, G. B. Piccardo and P. Corona-Chávez
9.50 - 10.30 MANTLE EXHUMATION PROCESSES IN THE OCEAN CONTINENT TRANSITION OF MAGMA-POOR RIFTED MARGINS
G. Manatschal, O. Müntener and L. Lavier
10.30 - 10.50 Coffee-break + posters
10.50 - 11.10 EXTENSION OF A CONTINENTAL LITHOSPHERE WEAKENED BY IMPREGNATION OF ASTHENOSPHERIC MELTS: ANALOGUE MODELLING APPROACH
G. Corti, M. Bonini, F. Innocenti and P. Manetti
11.10 - 11.30 ORTHOPYROXENE AND OLIVINE FABRICS: INDICATORS OF ALTERNATING STRESS FIELD DURING THE FORMATION OF THE PANNONIAN BASIN
Károly Hidas, György Falus and Csaba Szabó
11.30 - 11.50 EXHUMATION HISTORY OF SUBCONTINENTAL GARNET PYROXENITE-BEARING MANTLE FROM THE EXTERNAL LIGURIDE OPHIOLITES (NORTHERN APENNINE, ITALY): IMPLICATIONS FOR RIFTING AND MANTLE EXHUMATION PROCESSES AT OCEAN-CONTINENT TRANSITION
A. Montanini, R. Tribuzio and R. Anczkiewicz
11.50 - 12.10 GEOCHEMISTRY OF GARNET PYROXENITE LAYERS FROM THE EXTERNAL LIGURIDE MANTLE PERIDOTITES (NORTHERN APENNINE, ITALY): EVIDENCE FOR RECYCLING OF CRUSTAL MATERIAL IN A OPHIOLITIC MANTLE SEQUENCE
R. Tribuzio, A. Montanini and M. Thirlwall
12.10 - 12.30 LITHOSPHERIC MANTLE EVOLUTION BENEATH THE IBERIAN PLATE: EVIDENCE FROM MANTLE XENOLITHS AND PERIDOTITE MASSIFS
L. Beccaluva, G. Bianchini and F. Siena
12.30 - 12.50 A RE-OS ISOTOPE STUDY OF KIMBERLITE DERIVED PERIDOTITE XENOLITHS FROM FINLAND: CONSTRAINTS FOR THE ORIGIN OF LAYERED CONTINENTAL MANTLE
P. Peltonen and G. Brügmann
12.50 - 13.10 THE MANTLE LITHOSPHERE IN NORTH-EASTERN BRAZIL AND THE RECORDS OF THE FERNANDO DE NORONHA PLUME
G. Rivalenti, V.A.V. Girardi, A. Zanetti, M. Mazzucchelli, C.C.G. Tassinari, G.W. Bertotto
13.10 - 14.20 Lunch buffet + posters
14.20 - 15.00 PARTIAL MELTING IN RONDA VERSUS REFERTILIZATION IN LHERZ: TWO CONTRASTING EFFECTS OF LITHOSPHERIC THERMAL EROSION DOCUMENTED IN OROGENIC PERIDOTITES
J-L. Bodinier, V. Le Roux, X. Lenoir, O. Alard, C. Garrido, A. Tommasi, J-M. Dautria, A. Vauchez, J-P. Lorand and F. Gervilla
15.00 - 15.40 ORIGIN AND SIGNIFICANCE OF SPINEL AND GARNET PYROXENITES IN THE SHALLOW LITHOSPHERIC MANTLE IN WESTERN EUROPE AND NW AFRICA
H. Downes
15.40 - 16.00 Coffee-break + posters
16.00 - 16.20 EVIDENCE FOR FORMATION AND MODIFICATION OF THE KAAPVAAL CRATON (SOUTHERN AFRICA) IN ARCHAEAN SUBDUCTION ZONES
N.S.C. Simon, R.W. Carlson, D.G. Pearson and G.R. Davies
16.20 - 16.40 FORMATION OF LOWER CONTINENTAL CRUST THROUGH FOCUSED FLOW IN KM-SCALE MELT CONDUITS: THE ZONED ULTRAMAFIC BODIES OF THE CHILAS COMPLEX IN THE KOHISTAN ISLAND ARC (NW PAKISTAN)
O. Jagoutz, O. Müntener, J-P. Burg, P. Ulmer, E. Jagoutz and T. Pettke
16.40 - 17.00 GEOCHEMICAL VARIATIONS IN THE BACK-ARC, SOUTH PATAGONIAN LITHOSPHERIC MANTLE BENEATH PATAGONIA (SOUTH AMERICA): TOWARDS A GEODYNAMIC MODEL
R. Vannucci, A. Zanetti, G. Rivalenti , M. Mazzucchelli and C.A. Cingolani
17.00 - 17.20 GEOCHEMICAL PROCESSES IN FOREARC PERIDOTITES: DEPLETION, ENRICHMENT, AND MELT REACTIONS IN THE MANTLE WEDGE PRESERVED IN A SUPRA-SUBDUCTION ZONE OPHIOLITE, CALIFORNIA.
J.W. Shervais, S.K. Vetter and S.B. Mukasa
17.20 - 17.40 GEOCHEMICAL SIGNATURE OF THE QUARTZ DIORITE VEIN IN MANTLE PERIDOTITE XENOLITH FROM TALLANTE, SE SPAIN: LASER-ABLATION ICP-MS ANALYSIS
Y. Shimizu, S. Arai, T. Morishita and Y. Ishida
17.40 - 18.00 MANTLE MELTING PROCESSES DISCERNED FROM A GEOCHEMICAL STUDY OF THE TINAQUILLO PERIDOTITE MASSIF, VENEZUELA
S.B. Mukasa, S.H. Choi, A.V. Andronikov and M.C. Marcano
18.00 - 18.20 PLATINUM-GROUP ELEMENTS ABUNDANCES IN A MANTLE WEDGE: THE NONSBERG-ULTENTAL PERIDOTITES, EASTERN ITALIAN ALPS
R. Braga, T. Meisel and L. Morten
  Poster session II
19.30 Dinner and overnight

  September 29, 2005:
9.00 - 9.30 Introduction to the field excursion : R. Polino, F.M. Elter, G.B. Piccardo.
9.30 Excursion to the Lanzo Sud Massif, southern flank of Mt. Musine’
  Dinner and overnight

  September 30, 2005:
9.00 - 9.30 Introduction to the field excursion : O. Müntener.
9.30 Excursion to the Lanzo Nord Massif
  Dinner and overnight or departure


Posters will be exposed in the Conference Hall: poster presentation and
discussion during coffee and lunch breaks and after dinner.