Postcollisional contractional and extensional deformation in the Aegean region

2006 ◽  
Author(s):  
Sotirios Kokkalas ◽  
Paraskevas Xypolias ◽  
Ioannis Koukouvelas ◽  
Theodor Doutsos
Keyword(s):  
Extensional Deformation ◽  
Aegean Region

Record of a Palaeogene syn-collisional extension in the north Aegean region: evidence from the Kemer micaschists (NW Turkey)

2007 ◽  
Vol 144 (2) ◽  
pp. 393-400 ◽  
Author(s):  
LAURENT BECCALETTO ◽  
NIKOLAY BONEV ◽  
DELPHINE BOSCH ◽  
OLIVIER BRUGUIER
Keyword(s):  
Early Eocene ◽  
Extensional Deformation ◽  
Aegean Region ◽  
The North ◽  
Upper Limit ◽  
Early Tertiary ◽  
Icp Ms ◽  
Ductile Shearing ◽  
Nw Turkey ◽  
North Aegean

In NW Turkey, the medium-grade Kemer micaschists of the Biga Peninsula record NE-directed extension related to ductile to brittle–ductile shearing during the Palaeogene period: a lower limit for their exhumation is given by the Late Maastrichtian age of the HP–LT metamorphism of a similar nearby area (Çamlıca micaschists); an upper limit is given by the Early Eocene intrusion age of the post-kinematic Karabiga granitoid, dated as 52.7 ± 1.9 Ma using the U–Pb LA–ICP–MS method on xenotime. Correlations with the northeasterly Rhodope region and integration into the geodynamic regional frame indicate that the Kemer micaschists experienced an extensional deformation connected to a collisional context in latest Cretaceous–early Tertiary times. The Kemer micaschists therefore represent a new area (the first in Turkey), which suffered synorogenic extension in the north Aegean domain at the very beginning of Tertiary times.

3.2 ka BP Megadrought and the Late Bronze Age Collapse

2017 ◽  
Author(s):  
David Kaniewski ◽  
Elise Van Campo
Keyword(s):  
Bronze Age ◽  
Prime Factor ◽  
Eastern Mediterranean ◽  
Late Bronze Age ◽  
Southwest Asia ◽  
Aegean Region ◽  
Climate Shift ◽  
Dark Ages ◽  
Political Unrest ◽  
Mediterranean Archaeology

The collapse of Bronze Age civilizations in the Aegean, southwest Asia, and the eastern Mediterranean 3200 years ago remains a persistent riddle in Eastern Mediterranean archaeology, as both archaeologists and historians believe the event was violent, sudden, and culturally disruptive. In the first phase of this period, many cities between Pylos and Gaza were destroyed violently and often left unoccupied thereafter. The palace economy of the Aegean Region and Anatolia that characterized the Late Bronze Age was replaced by the isolated village cultures of the Dark Ages. Earthquakes, attacks of the Sea Peoples, and socio-political unrest are among the most frequently suggested causes for this phenomenon. However, while climate change has long been considered a potential prime factor in this crisis, only recent studies have pinpointed the megadrought behind the collapse. An abrupt climate shift seems to have caused, or hastened, the fall of the Late Bronze Age world by sparking political and economic turmoil, migrations, and famines. The entirety of the megadrought’s effects terminated the Late Bronze Age in the eastern Mediterranean.

scholarly journals A Prospective Study for the Mitigation of the Climate Change Effects: The Case of the North Aegean Region of Greece

2020 ◽  
Vol 12 (24) ◽  
pp. 10420
Author(s):  
Ioannis Chatziioannou ◽  
Efthimios Bakogiannis ◽  
Charalampos Kyriakidis ◽  
Luis Alvarez-Icaza
Keyword(s):  
Climate Change ◽  
Prospective Study ◽  
Adaptation To Climate Change ◽  
Water Shortages ◽  
Sea Levels ◽  
Aegean Region ◽  
Climate Change Effects ◽  
The North ◽  
North Aegean ◽  
A Prospective Study

One of the biggest challenges of our time is climate change. Every day, at different places of the world, the planet sends alarming messages about the enormous transformations it is experiencing due to human-based activities. The latter are responsible for changing weather patterns that threaten food production, energy production and energy consumption, the desertification of land, the displacement of people and animals because of food and water shortages due to the reductions in rainfall, natural disasters and rising sea levels. The effects of climate change affect us all, and if drastic measures are not considered in a timely manner, it will be more difficult and costly to adapt to the aforementioned effects in the future. Considering this context, the aim of this work is to implement a prospective study/structural analysis to the identified sectors of a regional plan of adaptation to climate change so as to promote the resilience of the region against the negative phenomena generated by the climate crisis. This was achieved in two steps: first, we identified the relationships between the strategic sectors of the plan and organized them in order of importance. Second, we assessed the effectiveness of several public policies oriented towards a city’s resilience according to their impact upon the strategic sectors of the plan and the co-benefits generated by their implementation for society. The results highlight that the most essential sectors for the mitigation of climate change are flood risk management, built environment, forest ecosystem management, human health, tourism and rise in sea level. As a consequence, the most important measures for the resilience of the North Aegean Region against climate change are the ones related to the preparation of strategic master plans for flood protection projects.

scholarly journals Cretaceous oblique extensional deformation and magma accumulation in the Fosdick Mountains migmatite-cored gneiss dome, West Antarctica

Tectonics ◽  
2010 ◽  
Vol 29 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
R. R. McFadden ◽  
C. S. Siddoway ◽  
C. Teyssier ◽  
C. M. Fanning
Keyword(s):  
West Antarctica ◽  
Gneiss Dome ◽  
Extensional Deformation

Studies of the Late Bronze Age copper-based ingots found in Greece

2000 ◽  
Vol 95 ◽  
pp. 207-217 ◽  
Author(s):  
Helen Mangou ◽  
Panayiotis V. Ioannou
Keyword(s):  
Chemical Composition ◽  
Bronze Age ◽  
Atomic Absorption Spectroscopy ◽  
Pure Copper ◽  
Late Bronze Age ◽  
Slow Cooling ◽  
Metallographic Examination ◽  
Aegean Region ◽  
Chemical Content ◽  
Different Origin

Seven bun type, one slab type, and 44 oxhide type Late Bronze Age ingots found in the Aegean region, Crete and Mainland Greece have been analysed for their chemical content (twelve elements) by atomic absorption spectroscopy. The results show that the ingots contain variable amounts of oxygen as copper(I) oxide. The oxhide ingots are made of purer copper, the bun type are of relatively pure copper and bronze, while the slab type is bronze. The oxhide ingots from Crete may have a different origin from those found in the Aegean and in Mainland Greece because they have a different chemical composition. The metallographic examination of twenty ingots, three of bun and seventeen of oxhide type, revealed that they have been cast in open moulds, followed by slow cooling. Microanalyses of inclusions in fifteen ingots revealed the presence of copper(I) sulphide, copper(I) oxide, copper-iron and copper-iron-sulphur and their origin is discussed. Hardness measurements on fourteen ingots of various types revealed that they are somewhat harder for a cast object than control alloys and likely explanations are given.

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