Part A. Samos Island, Greece
Published:January 01, 2011
Samos is not one of the typical Aegean “turtle-back–shaped core-complex type” islands like Ios or Mykonos, for example. The general structure of Samos is dominated by steep faults, and the overall architecture of the islands is best described as a horst. The topography of Samos is rugged and dominated by the sheer cliffs of 1433-m-high Mount Kerkis in the western part of the island (Fig.7).
The geology of Samos consists of a number of metamorphosed nappes, one non-metamorphosed nappe, and a Miocene graben. The island offers a look at an exceptionally complete nappe stack of the Central Hellenides, ranging from the high-pressure–metamorphosed Basal Unit (as part of the External Hel-lenides), all the way up to the ophiolitic Selçuk Nappe and the non-metamorphosed Cycladic Ophiolite Nappe. This field guide is concerned with the two structurally lowest units, the Basal Unit and the overlying Cycladic Blueschist Unit, as well as the Tertiary sediments.
Figures & Tables
Field Guide to Samos and the Menderes Massif
This field-trip guide explores the tectonics of Samos and the Menderes Massif, two fascinating areas within the eastern Mediterranean section of the Tethyan orogen. The guide includes detailed outcrop descriptions, maps, and diagrams to explore along-strike variations in the Hellenide-Anatolide orogen, including the architecture of the Early Tertiary Alpine nappe stack and its strong Miocene extensional overprint. The suggested itinerary is based on the 2010 Geological Society of America Field Forum: “Significance of Along-Strike Variations for the 3-D Architecture of Orogens: The Hellenides and Anatolides in the Eastern Mediterranean.” The outcrop descriptions begin with Day 1 in Samos, where, atypically for the N-S stretched Aegean region, Miocene extension is E-W. The focus of Day 2 is on high-pressure assemblages in northern Samos. The following three days explore the Anatolide Belt in western Turkey, where the Menderes nappes—also known as the Menderes Massif—form the tectonic footwall below the Cycladic Blueschist Unit.