Geological and seismological evidence for NW-SE crustal extension at the southern margin of Heraklion basin, Crete. (EN)

Ganas, Athanassios

Bozionelos, George

Moshou, Alexandra

Fassoulas, Charalambos

Valkaniotis, Sotirios

Papathanassiou, George

Tsimi, Christina

GSRT bilateral project Greece – Slovenia 2005-2007 (EN)

project ASPIDA “Infrastructure Upgrade for Seismic Protection of the Country and 361 Strengthen Service Excellence through Action”, project MIS-448326, implemented under 362 the Action “Development Propo (EN)

In this paper we present new geological and seismological data on the orientation of crustal extension in central Crete (SE Heraklion basin) following the occurrence of two shallow seismic sequences: a) the May 2005 Assimi M=4.1 earthquake sequence and b) the 2013 Houdetsi-Tefeli sequence (3.2≤Mw≤3.6). Emphasis is given to the results of the geological field work, stress analysis, source inversion, aftershock relocations and mapping of earthquake-induced environmental effects. For the first time we find seismological evidence for N-S strike-slip motions along shallow fault planes in central Crete (Amourgeles fault). Our results indicate that while crustal extension dominates there is a combination of active fault kinematics, ranging from normal faulting along the northern edge of Messara basin (south-dipping Plakiotissa fault) to strike-slip faulting inside the SE part Heraklion basin (Houdetsi-Tefeli). The combination of active fault motions accommodates a NW-SE extension of the upper crust. (EN)

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

Field data collection, seismic data analysis (EN)

Peer-reviewed Article (EN)

Crete (EN)

extension (EN)

active fault (EN)

seismology (EN)

deformation (EN)

tectonics (EN)

Assimi earthquake (EN)

seismicity (EN)

structural geology (EN)

Ελληνική Γεωλογική Εταιρεία (EL)

Geological Society of Greece (EN)

Δελτίο της Ελληνικής Γεωλογικής Εταιρίας

2017-12-22

10.12681/bgsg.15004

https://ejournals.epublishing.ekt.gr/index.php/geosociety/article/view/15004

Geological Society of Greece (EN)

Crete (EN)

2005-2013 (EN)

0438-9557

2529-1718

Δελτίο της Ελληνικής Γεωλογικής Εταιρείας; Vol 51 (2017): Bulletin of the Geological Society of Greece, Vol. LI-51,; 52-75 (EL)

Bulletin of the Geological Society of Greece; Vol 51 (2017): Bulletin of the Geological Society of Greece, Vol. LI-51,; 52-75 (EN)

Copyright (c) 2017 Athanassios Ganas, Charalambos Fassoulas, Alexandra Moshou, George Bozionelos, George Papathanassiou, Christina Tsimi, Sotirios Valkaniotis (EN)

http://creativecommons.org/licenses/by-nc/4.0 (EN)