Turkey 2008

Northwestern Turkey

 

 

 

 

In May 2008, Marijn Koopman - a 3rd year BSc student - and I went to northwestern Turkey to paleomagnetically sample 140 lavas and ignimbrites for rotation analysis in conjunction with the previous fieldworks of 2006 and 2007 in the Menderes and Bey Daglari regions. During three weeks, we collected 1000 samples from Miocene volcanoes. Miocene volcanism (we samples centers ranging in age from ~20 to 14 Ma) was bimodal - both felsic volcanics in the form of ignimbrites, some of which rheomorphic, and volcanic ashes can be found, as well as andesitic volcanoes and calderas - and are perfect recorders of the magnetic field. The first results are promising :). After our sampling trip, we joined Côme Lefebvre, a PhD student working on the tectono-metamorphic history of the Central Anatolian Crystalline Complex, and Ayten Koç, a PhD student working on the tectono-sedimentary history of the central Taurides in southern Turkey.

 

 

 

 

 

 

Fieldwork in western Turkey was carried out by Marijn Koopman, bachelor student at Utrecht University...

 

 

 

 

 

 

 

 

 

 

 

...and me...

 

 

 

 

 

 

 

 

 

 

...and in Central Turkey by Côme Lefebvre, who is the victim of supervison of...

 

 

 

 

 

 

 

 

 

 

 

 

...Reinoud Vissers (on this picture) and me

 

 

 

 

 

 

 

 

 

 

 

 

 

...and Ayten Koç (on this picture siting on a Miocene coral reef) is doing her PhD project in southern Turkey, under supervision of Nuretdin Kaymakci, Reinoud and me.

 

 

 

 

 

 

 

 

 

 

 

 

Here an impression of Marijn's an my fieldwork in western Turkey.
Here you see Miocene volcanic ashes of the Selendi basin. The hard beds that stick out are welded tuffs...

 

 

 

 

 

 

 

 

...which we sampled of course.

 

 

 

 

 

 

 

 

We tried to sample the ashes as well, but soon after this attempt shown on the picture it turned out that the rock fell apart if you touched it...

 

 

 

 

 

 

 

 

 

...and we left :)

 

 

 

 

 

 

 

 

 

 

...The Selendi basin exposed some weird structures in the welded tuffs...are these expressions of rheomorphic ignimbrites? (basically, those are lavas that are deposited as ashes, but due to the extreme temperature the ash particles re-melt when they touch each other and start to flow like a lava, which leads to intense folding in any direction. See the work of Graham Andrews, University of British Columbia, Canada...)

 

 

 

 

 

 

Some more of those structures...

 

 

 

 

 

 

 

 

 

Marijn turned out to be an excellent driller :) See pictures below!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

...but also measuring...

 

 

 

 

 

 

 

 

 

 

 

..chilling...

 

 

 

 

 

 

 

 

 

...staring in the distance to avoid drilling...

 

 

 

 

 

 

 

 

 

 

 

...looking surprised in cameras...

 

 

 

 

 

 

 

 

 

 

 

...dancing on a hilltop...

 

 

 

 

 

 

 

 

 

 

...and indicating where the nearest pub is are among her talents :)

 

 

 

 

 

 

 

 

 

 

 

 

'stenen mannetje' (cairn) indicating a drilled site

 

 

 

 

 

 

 

This one...

 

 

 

 

 

 

 

 

...Caldera of Demirci in the sunset..isn't it amazing?

 

 

 

 

 

 

 

 

Poppy outcrop...

 

 

 

 

 

 

 

 

Me, explaining to the locals what the hell we're doing

 

 

 

 

 

 

 

 

 

 

 

She's a poor, lonesome cowgirl... :)

 

 

 

 

 

 

 

 

 

 

 

Sunset over western-Turkey. Biga peninsula in the distance

 

 

 

 

 

 

 

Turkish bird... :p

 

 

 

 

 

 

 

 

 

 

 

 

 

Marijn, studying an outcrop of the Kos detachment on the island of Kos in Greece, where we went for a few days to do something else than drilling (See van Hinsbergen & Boekhout paper on the Publications page)

 

 

 

 

 

 

 

Me, taking a few notes of it

 

 

 

 

 

 

 

 

 

Another outcrop of the Kos detachment: brittly deformed Miocene granite (monzonite) at the base, unmetamorphosed Cretaceous carbonate at the top. Marijn for scale.

 

 

 

 

 

 

 

Mega-shearbands in the Kirşehir region (amazing, never seen something like that before!)

 

 

 

 

 

 

 

 

 

 

Sheath folds in marble, CACC

 

 

 

 

 

 

 

 

 

 

Marijn, Côme and me, enjoying calcsilicates

 

 

 

 

 

 

 

 

large monocline in the Apa basin, central Taurides (Ayten's region)

 

 

 

 

 

 

 

 

 

 

major dewatering structure in the same basin (biggest I've ever seen...they form during earthquakes when the sediments are still wet and soft).

 

 

 

 

 

 

 

 

 

...me being scale at a shear zone of serpentinite in between metaflysch in the Alanya nappes...that's gonna be a next PhD project :)

 

 

 

 

 

 

 

 

 

Ayten and me, discussing flysch in the Manavgat basin

 

 

 

 

 

 

 

 

 

 

 

Beautiful slumps in the flysch

 

 

 

 

 

 

 

 

 

 

Corals :)

 

 

 

 

 

 

 

 

 

 

 

Unfossilised rodent

 

 

 

 

 

 

 

 

 

 

 

Butterfly...

 

 

 

 

 

 

 

 

...Camel!

 

 

 

 

 

 

 

 

 

 

Amazing weathering structures near Kula, with a Pleistocene lava on the hilltop full of columnar joints

 

 

 

 

 

 

 

 

...and a bunch of nice sunsets :)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Greek island of Lesbos in the distance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

And some Turkish village life