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
Breda not be plundered, the troops vented their fury upon the inhabitants. In the resulting mayhem, known as "Haultpenne's Fury", over 500 citizens were killed. In March 1590, Breda fell back into the hands of the Dutch and Maurice of Nassau, when a 68 men hand-picked force, concealed under the turf of a peat-boat, had contrived to enter the city in a daring plan devised by Adriaen van Bergen (Siege of Breda (1590)). Around 1610 the construction of the Spanish Gate or "Spandjaardsgat" was started as a remembrance to that successful action. After a ten-month siege in 1624–25, the city again