Category Archives: PhD

The unexpected little joys of lithic use wear analyses II

A little while ago I posted a photo of a crystal inclusion in a white flint bladelet. I promised to post some more, whenever I think of it. So here is another example of the beautiful things I have encountered doing the use wear analyses. This burnt flint bladelet, like the last example from Late Mesolithic layers at Lutter/St. Joseph, France, did not show any signs of use. However, the microscope does show beautifully the microfossils within the flint, or possibly radiolarite, out of which it was made. And, like the last example, this photo also shows the possibilities of the digital microscope I have been able to use for the study of the use wear analyses of Late Mesolithic artefacts from two Lutter/St. Joseph, France and Arconciel/La Souche, Switzerland.

Microfossils, Lutter/St. Joseph. France. Mesolithic

Micro-fossils in a Late Mesolithic burnt retouched bladelet from Lutter/St. Joseph, France. Composite (focus stacking) image (150x) I made with a Keyence Digital microscope (Dep. Of Geosciences at the Université du Fribourg, Switzerland.)

The unexpected little joys of lithic use wear analyses I

Sometimes, when doing the microscopic analyses of use wear traces I come across fascinating things that have little to do with the actual use wear of the tools being studied. Instead they either provide something of a background to their natural origins or are just visually interesting. The digital microscope I have been using at the Dep. Of Geosciences at the Université de Fribourg, Switzerland has many technical possibilities. It allows me to document not only the use wear traces using a variety of photographic technologies. It also provides the opportunity to record composite photos such as this one of an otherwise not very interesting bladelet fragment from the site of Lutter/St. Joseph, in the French Alsace. I’ll try to publish a few more of such examples in the near future.

Lutter/St. Joseph, France. Crystal inclusion in a Mesolithic flint bladelet.

Crystal inclusion in a Late Mesolithic flint bladelet fragment from Lutter/St. Joseph, France. Composite (focus stacking) image (100x) I made with a Keyence Digital microscope (Dep. Of Geosciences at the Université du Fribourg, Switzerland.)

The alpine Mesolithic and the scrapers from Arconciel/La Souche. Oh, and much much more!

Way back in 2014 Laure Bassin and I presented the first results of our Gestures of TransitionsGestures of Transitions project at the MesoLife conference in Selva di Cadore in the beautiful Dolomites. Now these results have been published in a new volume of Preistoria Alpina. We could increase our results beyond those presented in the poster then and are pleased to be able to show a nice summary of our study of the scrapers from the Late Mesolithic layers at Arconciel/La Souche, Switzerland.

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Late Mesolithic scrapers from Arconciel/La Souche, Switzerland. Illustration: SAEF/AAFR

Scrapers are special at this site. Not only are many extremely small, an extraordinary large proportion of tools found at Arconciel/La Souche, over 50% of tools, were scrapers. So, curious about what we found out about these seemingly so insignificant little tools? You can download the paper here:

Cornelissen, M. and Bassin, L., 2016. Alpine raw materials and the production and use of scrapers at the Swiss Late Mesolithic site of Arconciel/La Souche, Preistoria Alpina 48, pp. 11-19

Abstract
The well stratified rock shelter site of Arconciel/La Souche, Switzerland was repeatedly occupied between 7100 and 4900 cal BC. It lies in the Sarine river valley at the foot of the Prealps. This paper presents the first preliminary results of the study of the scrapers from this site. Of the chipped stone tool categories, scrapers are the most numerous found at Arconciel/La Souche. A combined technological and microscopic use wear study of the scrapers from three assemblages (ensemble
3, 4 and 5) has allowed us to examine the use and production of scrapers as well as how production and use relate to the various raw materials utilised at Arconciel/La Souche. We were able to show that although scraper morphology remained stable over time, there was a significant change in the relationship between raw materials and scraper production as well as the use of scrapers.
This research will be expanded to include other assemblages and chipped stone artefact categories from Arconciel/La Souche, but has already provided important new insights into artefact use-life in the still relatively poorly understood millennium leading up to the end of the Mesolithic on the Swiss Plateau and the nearby Prealps.

But there is even more! Preistoria Alpina has changed its set-up. The journal is now only available online and open-access. All posters from the MesoLife conference were published in this volume and are available! The papers presented one those hot summer days in the Dolomites have recently been published in volume 423 of Quaternary International. (With a little something about recent Mesolithic finds in the Swiss Alps by Thomas Reitmaier and myself.) That makes an amazing total of 48 articles on alpine Mesolithic!

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Late Mesolihtic scrapers from Arconciel/La Souche, Switzerland. Illustration: SAEF/AAFR

These two volume show how vibrant the research of the Mesolithic in alpine and mountainous enviroments has become of late and will undoubtly be shown to be valuable additions to our knowledge of the Mesolithic in Europe. Hats off to the MesoLife organisers and editors of these two volumes!

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The “Gestures of Transition” circus is still touring: This week at the Berner Zirkel!

About two weeks ago Laure Bassin and I presented our PhD research at the Universität Zürich. And that’s not it yet. We are very excited to annouce that this Thursday, December 8th, we will be talking (in German) about the “Gestures of Transitions” project at the Berner Zirkel für Ur- und Frühgeschichte. Samichlaus will be off again by then, but it will be a bag full of Mesoltihic goodies for everyone! Artefact biographies, use wear, chaînes opératoires, all based on our research on the lithic material from Arconciel/La Souche and Lutter/St-Joseph. In short the Mesolithic-Neolithic transition in Switzerland from a different point of view. The Berner Zirkel talks are aimed at the general public. Do look in if you are nearby. We would live to see you there!

Donnerstag 8.12.2016 18:30  –  Universität Bern, Hörsaal 114

Steingeschichten. Das Endmesolithikum zwischen Voralpen und Jura, geschrieben von den letzten Jäger- und Sammler/innen

Mit ihrer für das schweizerische Mittelland einzigartigen Stratigraphie ermöglicht es die Fundstelle Arconciel/La Souche (Kt. Freiburg) 2000 Jahre des Mesolithikums zu erforschen. Die ebenfalls vor wenigen Jahren untersuchte Fundstelle Lutter/St. Joseph (Elsass, FR) dient dabei als Vergleich. Im Nationalfonds-Projekt «Gestures of Transitions» wird mit neuen methodologischen Ansätzen das Ende des Mesolithikums im peri-alpinen Europa untersucht. Im Zentrum stehen Artefaktbiographien und die Kombination von technischen Untersuchungen und Gebrauchsspurenanalysen.

Wie wiederspiegeln sich die tiefgreifenden sozialen und wirtschaftlichen Veränderungen am Übergang zum Neolithikum in der Herstellung und im Gebrauch der Artefakte? Und erlauben sie es die Geschichten, welche sich an den zwei Orten abspielten, zu rekonstruieren?

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Experimentally cutting wild boar bone with hafted lithic tools. Photo: M. Cornelissen

The Berner Zirkel is also on Facebook with all sorts of new about archaeology in the canton of Berne and the region.

Cooking up a PhD

Last week I spend in a self-imposed writing retreat. I’ve found that this, if I am at the right stage in my work and feel like it (it can get lonely), gives my productivity a good boost. It works for me; I was able to get on really well with a large chapter of my PhD that I had been struggling with for a while. You might want to give it a try. The old advice of sleep well, exercise and eat well, however boring it may sound, is sound as well. But when you are writing you want to write and you don’t want to spend a lot of time cooking. Next to the cabin in which I spend my retreat grows a lovely fig tree and against all the odds I still got a handful of ripe figs every day all week. So, what better then to use them for an easy, tasty dinner?

MARCEL’S FIG PIZZA

We’re doing this the easy way, right? So I buy a ready made pizza base/dough. You can buy ones here (Switzerland) which are ca. 30cm diam. (ca. 3-320 g) and you just need to roll them out. The kind of cheese I use depends a bit what happens to be lying about in the fridge. What I think works best is a combination of a milder cheese, such as a vacherin, emmentaler, jongbelegen or mild cheddar, with something with a bit more taste, like an old gruyère, parmesan or something else, as long as it melts well.

You might not get figs anymore this time of year. It works a treat with pears as well!

It is a good snack for 2, perhaps with a small salad. Or it will make one hungry PhD student happy.

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this year’s last figs

You need:

  • 1 pizza doug
  • ca. 4-5 ripe figs or a decent sized pear
  • 2 hands full of grated cheese (see above; you can never have enough cheese on anything, can you?)
  • a few slices of dry-cured ham (prosciutto di parma, jamon serrano, Schwarzwälder Schinken, something like that)
  • some chopped garlic, if you want
  • thyme
  • 1 tb olive oil

Now, get cookin’:

  • lay/roll out the pizza dough and prepare as described on the packaging
  • rub lightly with some oil and sprinkle over some salt if you want
  • spread the cheese over the base
  • sprinkle with a bit of thyme
  • tear up the ham and spread it over the cheese
  • cut the figs in quarters – or the pear in thin-ish slices – and place on the pizza

Bake at ca. 240ºc in the bottom half of the oven until the cheese has melted and the base is crisp, probably about 12 min (but you might want to look at the instructions on the dough packaging, though!).

Enjoy, and remember you can’t write on an empty stomach!

P.S. So, what food keeps you writing?

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Autumn writing

We have spend a few amazing autumn days on a lake in the Swiss Alps. My amazing, supportive wife has now left me alone at the lake to spend a week to try and finish a section of my PhD thesis in splendid solitude.

Well that, and to eat the last ripe figs of the tree!

Gallery

Experimenting with notched blades

This gallery contains 2 photos.