7. Lateral displacement of a thermally weakened pluton overburden (Campiglia Mari>ma, Tuscany) Vezzoni, S.

7.   Lateral   displacement   of   a   thermally   weakened   pluton   overburden  

(Campiglia  Mari>ma,  Tuscany)

Vezzoni,  S.

_{,  Rocchi,  S.}

_{,  Dini,  A.}

in  prep.

1_{Dipar'mento  di  Scienze  della  Terra,  Università  di  Pisa,  Via  Santa  Maria  53,  56126  Pisa,  Italy} 2_{Is'tuto  di  Geoscienze  e  Georisorse,  CNR,  Via  Moruzzi  1,  56124  Pisa,  Italy}

Keywords:  extensional  tectonics,  magma/sm,  skarn,  gravita/onal  sliding,  transfer  zone A   unifying   model  linking   the  extensional  regional  tectonic   and   the  local  magma/c   and   hydrothermal  features  observed  at  Campiglia  Mari>ma  is  proposed.  The  paper  is  focussed   on   the   anomalous   structures,   mass   displacement,   rock   fracturing,   and   hydrothermal   mineraliza/ons  developed  near  the  Botro  ai  Marmi  pluton  that  can  not  explained  invoking   regional  tectonic  processes  alone.  The  results  make  a  contribu/on  to  the  knowledge  of  the   mechanisms  by  which  magma  can  displace  its  host  rocks,  triggering  local  deforma/on  that  in   turn  generates  geological  traps  for  later  magmas  and  hydrothermal  fluids,  with  implica/ons   on  surveying  for  targets  in  ore  and  geothermal  explora/on.