TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Mineralogical-Petrographical Observations on Metamorphic Transformations in the Gabbroids from Transitional Zone of the Iuţi-Tişoviţa-Plavişeviţa Ophiolitic Complex
(Universitatea Petrol-Gaze din Ploieşti, B-dul Bucureşti nr. 39, Ploieşti e-mail: mihai_c@bigstring.com)
Vol LX • No. 4/2008
Mihai Ciocīrdel, Gheorghe Brănoiu
Universitatea Petrol-Gaze din Ploieşti, B-dul Bucureşti nr. 39, Ploieşti
e-mail: mihai_c@bigstring.com

 Keywords   gabbroids, Iuţi-Tişoviţa-Plavişeviţa ophiolitic complex, metamorphic transformations, mineralogical-petrographical observations

 Abstract
On the basis of the mineralogical-petrographical observations performed on some rock samples from transitional unit of the Iuţi-Tisoviţa-Plavişeviţa (ITP) ophiolitic complex in the paper are made some considerations concerning the metamorphic transformations which took place in this region.
The rocks were classified as chlorite-amphibole metagabbros. It has been proposed a possible succession for the identified metamorphic transformations. All these transformations had a strong metasomatic character and were determined by some hydrothermal fluids which removed from the studied rocks especially Ca, Si, and Na.

 Rezumat
Pe baza observaţiilor mineralogo-petrografice efectuate asupra unor probe de roci prelevate din zona de tranziţie a complexului ofiolitic Iuţi-Tisoviţa-Plavişeviţa īn lucrare se fac consideraţii genetice referitoare la transformările metamorfice suferite de rocile din zona studiată.
Rocile studiate au fost clasificate ca metagabbrouri cu clorit şi amfibol. A fost propusă o succesiune posibilă pentru transformările metamorfice identificate. Toate aceste transformări au un puternic caracter metasomatic şi au fost determinate de fluide hidrotermale care au luat īn soluţie din rocile studiate īn special Ca, Si, şi Na.



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