Archive for June 4th, 2017

Wooster Geologists get to work in southwestern France

June 4th, 2017

La Barde, France — After a day of almost solid rain, we woke up the next morning to brilliant weather in southwestern France. Macy, Paul and I drove to the small town of Archiac, where we collected a bag full of gorgeous specimens of the oyster Pycnodonte vesiculare from the Aubeterre Formation.

The oysters could be easily pulled from the marly matrix. Our goal was to collect as many specimens with fossil sclerobionts on them as we could. Sclerobionts are organisms that live in or on hard substrates, in this case it means borings and encrusters.

Thanks to Paul Taylor for this modification of the stratigraphic column from Platel (1999). The three formations we are collecting from are the Biron, Barbezieux, and Aubeterre, all in the Upper Campanian.

We also visited an outcrop of the Segonzac Formation near Segonzac itself so Paul could collect bryozoans. We were at the edge of a vineyard.

The view from our last outcrop was wonderful. Peaceful countryside. That’s our field car parked on the roadside.

Location GPS Unit Position
Archiac 166 Aubeterre N45° 31.413′ W0° 17.909′
Chez Allard 167 Segonzac N45° 37.040′ W0° 11.546′