Ring, U., Okrusch, M. and Will, T. 2007.   Samos Island, Part I: metamorphosed and non-metamorphosed nappes, and sedimentary basins. In: (Eds.) Gordon Lister, Marnie Forster, and Uwe Ring, Inside the Aegean Metamorphic Core Complexes, Journal of the Virtual Explorer, Electronic Edition, ISSN 1441-8142, volume 27, paper 5, doi:10.3809/jvirtex.2007.00180

Samos Island, Part I: metamorphosed and non-metamorphosed nappes, and sedimentary basins

Uwe Ring

Department of Geological Sciences, Canterbury University, Christchurch 8004, New Zealand

< uwe.ring@canterbury.ac.nz>

Martin Okrusch

Institut für Mineralogie, Universität Würzburg, 97074 Würzburg, Germany

<okrusch@mail.uni-wuerzburg.de>

Thomas Will

Institut für Mineralogie, Universität Würzburg, 97074 Würzburg, Germany

< thomas.will@mail.uni-wuerzburg.de>

Abstract

This excursion guide is subdivided into two parts: the first deals with aspects of the geologic, tectonic and metamorphic evolution of Samos and the second with the famous fossils of the islands. The first part is accompanied by an itinerary for a 5-day field trip. Chapter 2 does not include a detailed field trip program but contains a map that shows the main sites of the bone beds that contain the world-famous Neogene mammals of Samos.

Keywords: Samos, geological excursion

Table of Contents

Introduction
Geology of Samos
General Architecture of Samos and Important Tectonic Contacts
Metamorphic History
Petrography of metabasic rocks of Selçuk nappe
Petrography of metapelitic rocks of Ampelos nappe
Petrography of glaucophanites of Agios Nikolaos nappe
P-T estimates
Structural History and Deformation/Metamorphism Relationships
Geomorphology and Holocene Uplift of Northwestern Samos
Field Trips
Day 1: Metamorphosed rocks of the Ampelos and Agios Nikolaos nappe and Neogene sediments of Mytilini basin in East and North Samos
Stop #1.1: Mikri Lakka Bay
Stop #1.2: Gankou Beach (N37°45’59”, E26°57’35”)
Stop #1.3: Beaches of Lemonakis and Tsamadou ~2 km northwest of Kokkari
Stop #1.4: West of Avlakia and east of turnoff to Vourliotes
Stop #1.5: Monastary Moni Vronda south of Vourliotes
Stop #1.6: Around Agios Konstandinos
Stop #1.7: West of Agios Nikolaos
Stop #1.8: Kosmadei
Overnight in Karlovasi.
Day 2: Uplifted shorelines, Neogene sediments and volcanics of the Karlovasi basin and metamorphosed rocks of the Ampelos and nappe in western central Samos
Stop #2.1: Karlovasi harbour
Stop #2.2: St. Nicholas Chapel at Potami Beach (site 2 in Fig. 17)
Stop #2.3: Punta Promontory (site 3 in Fig. 17)
Stop #2.4: Mikro Seitani Cove (site 4 in Fig. 17)
Stop #2.5: Marl of Hora Formation
Stop #2.6: Conglomerate of Mytilini Formation just northwest of turnoff to Platanos
Stop #2.7: Slump folds in marl of the Hora Formation
Stop #2.8: Volcanic rocks at turnoff to Koumeika
Stop #2.9: Thick-bedded, travertine-like limestone of the Pythagorion Formation
Stop #2.10: Basal breccia of Basal Conglomerate Formation near Skoureika
Stop #2.11: Glaucophane schist N of Neochori
The best place for staying this night might be Ormos Marathokambos.
Day 3: Triassic granite and traverse from Ampelos into Kerketas nappe
Stop #3.1: Triassic granite W of Marathokambos
Stop #3.2: Traverse from Ampelos into Kerketas nappe (Fig. 24)
Spend night again in Ormos Marathokambos.
Day 4: Kerketas and Kallithea nappe
Stop #4.1: Kerketas nappe at Monastery Evangelistria
Stop #4.2: Radiolarite of Kallithea nappe S of Kallithea
Stop #4.3: Tectonic contacts W of Kallithea
Stop #4.4: Tectonic contacts N of Kallithea
Overnight either in Votsolakia or again in Ormos Marathokambos.
Day 5: South coast
Stop #5.1: Serpentinite-netagabbro profile in road cut between Spatherei and Pagondas
Stop #5.2: Road from Mili to Koumadarei
Stop #5.3: View across Mytilini basin and Quarternary plains
Stop #5.4: Mavradzei fault zone and gabbros
Overnight in Ireon or Pythagorion.
References