Kinematic and structural analysis in the Feneos area, N. Peloponnese.

Postgraduate Thesis uoadl:1321191 235 Read counter

Unit:
Τομέας Δυναμικής - Τεκτονικής - Εφαρμοσμένης Γεωλογίας
Library of the School of Science
Deposit date:
2011-07-04
Year:
2011
Author:
Κυδωνάκης Κωνσταντίνος
Supervisors info:
Καθηγητής Δημήτριος Παπανικολάου Επιβλέπων, Επίκουρος Καθηγητής Στυλιανός Λόζιος, Επίκουρος Καθηγητής Δημήτριος Κωστόπουλος
Original Title:
Kinematic and structural analysis in the Feneos area, N. Peloponnese.
Languages:
English
Summary:
Blueschist belts form integral parts of many orogens. In Greece, the external
blueschist belt is represented by the Phyllite – Quartzite unit (PQU; or Arna
unit).

The northernmost exposure of this unit is studied in the Feneos area, N.
Peloponnese. An early NE-SW compression resulted in the formation of
NW-trending mesoscopic folds in both the PQU and the overlying Tyros,
contemporaneous with the formation of the regional foliation. A later
NE-shearing, both distributed throughout the pile and localized in
well-developed shear zones, started in the ductile field and continued possibly
in the brittle field under the same stress field. The NE-SW direction for both
the initial compression and the later shearing (possibly related to exhumation)
suggests no relative rotation of the units throughout much of their geological
history. The post-peak metamorphic shearing recorded in the PQU from
Peloponnese and Crete adds to the point of view of significant relative
rotation between the aforementioned areas.

New thermodynamic data revealed the existence of significant metamorphic gap
between the PQU and the overlying Tyros beds in the study area.

Detrital zircon dating from a quartzite (PQU) revealed no influence from the
Variscan orogeny, documented here for the first time in pre-Triassic
(meta)sediments from Crete/Peloponnese.
Keywords:
Feneos, Structural analysis, Shear zones, Zircon dating, Blueschists
Index:
No
Number of index pages:
0
Contains images:
Yes
Number of references:
246
Number of pages:
101
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