Northwestern Hellenic Arc: Concurrent sedimentation and deformation in a compressive setting |
| |
Authors: | Henri Got Daniel Jean Stanley Denis Sorel |
| |
Institution: | 1. Centre de Recherches de Sédimentologie Marine, Perpignan France;2. Division of Sedimentology, Smithsonian Institution, Washington, D.C. U.S.A.;3. Laboratoire de Géodynamique Interne, Orsay France |
| |
Abstract: | Seismic (air-gun) and 3.5-kHz systems and coring in the northwestern sector of the Hellenic Arc, Ionian Sea, serve to define the regional configuration, attitude and geometry of the unconsolidated sedimentary cover in a compressive tectonic setting. The Pliocene and Quaternary deposits are deformed to varying degrees throughout the region southwest of the island of Zakinthos. Depositional trends, overall structural configuration of the cover, and assemblages of deformation structures, including tilted, folded and faulted strata associated with a very complex topography, clearly reflect syndepositional modification in a tectonically mobile area. The structural attitude of the unconsolidated strata can be distinguished from that in tectonically active regions of the Mediterranean where extension prevails. The youthful physiography, sediment dispersal patterns and depositional distribution reveal prevailing NW—SE and NE—SW trends. Sediment deformation structures, whose axes strike primarily NW—SE, reveal a general NE—SW compressive stress trend. The geologically recent nature and orientation of the deformation are compatible with present theories concerning the evolution of the Hellenic Arc. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|