People at Fort Hoofddijk

Freek van der Goes
F.C. van der Goes, BSc
Paleomagnetic Laboratory
Fort Hoofddijk
Department of Earth Sciences 
Utrecht University 
Budapestlaan 17, 3584 CD Utrecht 
The Netherlands 

Phone +31 613016884



Research of Freek van der Goes

Paleogeographic reconstruction of the Tethyan Ocean: Paleomagnetic constraints from the dyke complex of the Turkish ophiolites 

For the initiation of subduction, two end-member models have been proposed so far. Subduction can initiate along the oceanic ridge or along the transform fault.
During ocean spreading subvertical mafic dykes emplace parallel to the spreading ridge. The analysis of the tectonic rotation affecting such rocks during subsequent tectonic events, and the restoration to their original orientation will provide information about the paleo-ridge orientation and the paleo-spreading direction.

The goal of the project is to reconstruct the geometry of the spreading system and the paleospreading direction in the western Tethyan Ocean through the paleomagnetic analyses of dyke complexes of the Turkish ophiolites. We know that the convergence between Europe and Africa in the 
Cretaceous was roughly N-S-oriented.

Working field geologist, at Yahyali
Aladağ Mountains, Kayseri (Turkey

Drilling a gabbro dyke
By reconstructing the geometry of the ridge system in the same time span we can infer if the subduction started at the ridge or at the transform fault. Each scenario requires a different geodynamic mechanism and driving forces that will be discussed to interpret the obtained data. Such a reconstruction is then integrated into a larger scale geological scenario to elaborate mechanisms of subduction initiation.

View from the sampling location

View over Salda Gölü, Yesilova, Burdur (Turkey)

publicationsPublications of Freek van der Goes