Macroscopic structural analysis of AG10 well (Gulf of Corinth, Greece)

• Published in: Comptes rendus Geoscience. Academie des Sciences, Paris Vol. 336; no. 4-5; pp. 435 - 444
• Main Authors: Daniel, Jean-Marc, Moretti, Isabelle, Micarelli, Luca, Chuyne, Stéphanie Essautier, Piane, Claudio Delle
• Format: Journal Article Book Chapter
• Language: English; French
• Published: 01.03.2004
• Subjects: Marine; MED, Greece, Korinthiakos Gulf
• ISSN: 1778-7025; 1631-0713; 1778-7025
• DOI: 10.1016/j.crte.2004.01.001

This paper describes the structures observed on cores and image logs in AG10 well. The Aigion Fault architecture, including the damage zone, a 13 m-thick brecciated zone and fault core, are characterised. Structures predating the recent extension phase are numerous. Tectonic stylolites and sheared bed boundaries are related to the Hellenides compression trending ENE-WSW. The origin of bed parallel protobreccias and microstructures indicating eastuwest extension is discussed. These observations together with hydraulic data illustrate how image logs and cores can help us to understand the impact of tectonic fabric on fluid flow in carbonates.Original Abstract: Les structures interceptees par le puits AG10 sont decrites en utilisant les carottes et des logs daimagerie. Laarchitecture de la faille daAigion, composee daune zone endommagee, daune zone de breche de 13 m daepaisseur et de son cur, est caracterisee. Les structures anterieures a laextension recente sont nombreuses. Les stylolites tectoniques et les cisaillements interbancs sont relies a la compression alpine. Laorigine de niveaux de protobreches paralleles a la stratification et des structures indiquant une extension estuouest est discutee. Ces observations, comparees aux donnees hydrauliques, illustrent comment les logs daimagerie et les carottes permettent de comprendre le role des fabriques tectoniques sur les ecoulements dans les carbonates.