Anthi:
FWIW, with cpx+opx your assemblage is granulite or pyroxene-hornfels facies, not 'amphibolite'. I agree totally that the rocks still may be 'amphibolite', and I share that use of the terminology for the rock. Just thought this distinction might deserve mention. Everyone stay safe.
At 04:05 AM 10/30/2001, Liati, Anthi wrote:
>Dear Ronan,
>
>Regarding your request, there is one case of contact metamorphic
>amphibolites in the Rhodope zone, Northern Greece, which I have seen and
>described myself, in the framework of my PhD thesis. These rocks are
>partly
>to completely transformed into cpx-opx plag 'hornfelses'. In the field
>one
>can observe still relics of the original amphibolite in form of a few
>cm-large 'patches' in a greenish (cpx dominated) rock. These
>amphibolites
>occur together with many other regional metamorphic rocks (e.g marbles,
>ultramafics, metapelites), which were also affected by contact
>metamorphism
>caused by a granodiorite intrusion. There is some description, mineral
>chemistry, met. conditions etc. in my thesis, which you may find through
>Laurent Jolivet / Bruno Goffe (ENS, Paris). Bruno Goffe should have it.
>I
>hope that helps.
>
>cheers
>Anthi Liati
>
>
>At 18:46 08.10.01 +0200, you wrote:
>>Dear All,
>>
>>Does anyone know a case of contact metamorphism overprinting a regional
>>metamorphism within metabasites?
>>
>>If you know such example of geological context, could you please
>provide me
>>with references and outcropping conditions?
>>
>>Many thanks in advance.
>>
>>Ronan
>>
>>
>>
>>"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
>>Ronan HEBERT
>>Departement des Sciences de la Terre et de l'Environnement
>>Universite de Cergy-Pontoise
>>8, Le Campus, Batiment I
>>95031 Cergy cedex - France
>>Phone : (33) 01 34 25 49 41 - Fax : (33) 01 34 25 49 04
>>Email : [log in to unmask]
>>"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
>> http://www.u-cergy.fr/rech/labo/equipes/tecto/index.html
>>
>
>-----------------------------------------------------------------------
>Dr Anthi Liati
>Institute of Isotope Geology and Mineral Resources
>Department of Earth Sciences
>ETH-Zentrum
>Sonneggstr. 5, 8092 Zürich
>Tel. ++41 1 632 6607
> ++41 1 632 3764 (secretary Mrs. Britt Meyer)
>Fax ++ 41 1 632 1827
Best Regards,
JIM ECKERT
<[log in to unmask]>
------------------------------------------------------------
James O. Eckert, Jr., Ph.D
Department of Geology and Geophysics, Yale University
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