Petrographical characteristics of Ditró (Orotva) diorites, Eastern Carpathians, Transylvania (Romania)

Pál Molnár Elemér: Petrographical characteristics of Ditró (Orotva) diorites, Eastern Carpathians, Transylvania (Romania). In: Acta mineralogica-petrographica, (35). pp. 95-109. (1994)

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One of the most important rock groups outcropping in the NW part of the Ditró syenite massif, north of the Orotva creek and between the Csibi Jakab and Tászok creeks is the group of the dioritic rocks. On the basis of the mineralogical composition, color index (M) and the textural characteristics, this rock group can be divided into the following rock types: (1) meladiorites:meladiorites with textural ordering, meladiorites without textural ordering, schistose meladiorites; (2) normal diorites: diorites with textural ordering, diorites without textural ordering, feldspar schlieren diorites,diorites with feldspar aggregates; (3) leucodiorites: leucodiorites with textural ordering, leucodiorites without textural ordering. As the 1:5000 geological map of the area shows, these diorites do not form layer like and lenticular bodies (as some researchers have suggested), but they are irregular rock bodies showing gradual transition and joggle toward the neighboring rocks. Diorites represent a connection between the homblendites and the metamorphic rocks as well as between the syenites, monzonites and granites. To form this tectonic setting two (spatially equivalent but temporally different) magmatic mass had to be intruded.

Item Type: Article
Journal or Publication Title: Acta mineralogica-petrographica
Date: 1994
Volume: 35
ISSN: 0365-8066
Page Range: pp. 95-109
Language: English
Publisher: University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Place of Publication: Szeged
Related URLs:
Uncontrolled Keywords: Kőzettan, Ásványtan, Földtan
Additional Information: Bibliogr.: p. 108-109. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2016. Oct. 17. 09:25
Last Modified: 2022. Jul. 27. 10:43

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