Breda Formation Formation. The Breda Formation can be a couple of meters to (in the Roerdal Graben) more than thick. The top is formed by an erosional nonconformity in the south and east of the Netherlands. In the west the contact with the Pliocene Oosterhout Formation is more gradual. In the Roerdal Graben the mostly Pliocene Kiezeloolite Formation is sometimes on top of the Breda Formation. Locally the Breda Formation can be subdivided into members: the Aalten Member (silty calcareous clay, rich in shells), the Eibergen Member (clay alternating with thin sand layers, with a basal conglomerate in which shark teeth and
Siege of Breda (1624) the Dutch regularly used the town as a base for raiding Spanish Brabant, the parts of Brabant under royal rule would be better protected if the city were conquered. In addition, neighbouring towns occupied by the States, such as Bergen op Zoom, would be easier to conquer with a foothold in Breda. In 1590, Breda was captured from the Spanish using the stratagem with the peat boat. The conquest of a well-defended city like Breda would erase this disgrace. More importantly, Spinola personally felt that the failure of the Siege of Bergen-op-Zoom (1622) was a blot on his reputation. Furthermore,