Netherlands Journal of Geosciences —– Geologie en Mijnbouw | 93 – 4 | 175-196 | 2014 doi: 10.1017/njg.2014.14 Storms in a lagoon: Flooding history during the last 1200 years derived from geological and historical archives of Schokland (Noordoostpolder, the Netherlands) D.F.A.M. van den Biggelaar1,*, S.J. Kluiving1,2,R.T.vanBalen3,4,C.Kasse3,S.R.Troelstra3 & M.A. Prins3 1 Institute for Geo- and Bioarchaeology, Faculty of Earth and Life Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands 2 Faculty of Arts, Department of Archaeology, Ancient History of Mediterranean Studies and Near Eastern Studies, VU University Amsterdam, De Boelelaan 1105, 1081 HV Amsterdam, the Netherlands 3 Cluster of Climate Change and Landscape Dynamics, Faculty of Earth and Life Sciences, VU University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands 4TNO– Geological Survey of the Netherlands, Princetonlaan 6, 3584 CB Utrecht, the Netherlands * Corresponding author. Email:
[email protected] Manuscript received: 26 November 2013, accepted: 14 May 2014 Abstract Flevoland (central Netherlands) is an area of long-term discontinuous deposition that has been reclaimed from the Zuiderzee in the 20th century. Before the reclamation, the Zuiderzee had been in a phase of enlargement, threatening inhabitants on the islands and the shores, since the Medieval Period. During this phase, a surficial clay cover was deposited on the island of Schokland (World Heritage Site: Noordoostpolder, northern Flevoland). We have studied the clay sequence in order to reconstruct the island’s flooding history during the last 1200 years. The depositional history of the youn- gest clay deposit on Schokland is inferred from a literature study, analyses of a digital elevation model, six coring transects, three new 14C accelerator mass spectrometry (AMS) dates and laboratory analyses.