TOURMALINITE VEINS AND BRECCIAS FROM THE SYMVOLON-KAVALA PLUTON, NORTHERN GREECE: PETROGENETIC PRELIMINARY RESULTS


Δημοσιευμένα: Jul 28, 2016
Λέξεις-κλειδιά:
Τουρμαλινίτης υδροθερμικό ρευστό μετασωμάτωση κατακλασίτης
S. Xydous
A. Magganas
P. Pomonis
A. Kokkinakis
Περίληψη
Περιγράφεται για πρώτη φορά η παρουσία ενός τουρμαλινίτη με τη μορφή φλεβών και λατυποπαγών που εμφανίζεται μέσα στον Κατω-Μειοκαινικό γρανοδιοριτικό πλουτωνίτη της Καβάλας, ο οποίος διεισδύει στην κατώτερη τεκτονική ενότητα της ζώνης της Ροδόπης. Ο τουρμαλίνης, που συνήθως είναι κρυπτο- ως μικροκρυσταλλικός, είναι άφθονος στην κύρια μάζα των λατυποπαγών, ενώ απαντά ακόμη μαζί με κλάστες χαλαζία και γρανοδιορίτη σε μορφή συμπαγών φλεβών και εγχύσεων μέσα σε ρωγμές του πλουτωνίτη. Με βάση παρατηρήσεις υπαίθρου το σύστημα με τα τουρμαλινικά λατυποπαγή συνήθως διακόπτει την προϋπάρχουσα φύλλωση του πλουτωνίτη, υποδεικνύοντας πιθανή δημιουργία σε καθεστώς εύθραυστης παραμόρφωσης. Επιπρόσθετα, ορυκτολογικές και ιστολογικές παρατηρήσεις οδηγούν στο συμπέρασμα πως η απόθεση του τουρμαλίνη έγινε λόγω της απόψυξης πλούσιων σε βόριο υδροθερμικών ρευστών, υποδεικνύοντας μια πιθανή μαγματική υδροθερμική προέλευση για τoυς υπό εξέταση τουρμαλινίτες.
Λεπτομέρειες άρθρου
  • Ενότητα
  • Πετρολογία και Ορυκτολογία
Λήψεις
Τα δεδομένα λήψης δεν είναι ακόμη διαθέσιμα.
Αναφορές
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