WMS preview service. Data source: 1975-1978 and 1989-1990 geological mapping map (on a scale of 1: 500 000/1: 200 000) created according to: 1.Gelumbauskaitė L. Ž., 1996 (1995). Bottom relief and genesis of the Gotland depression. Baltica 9, 65–75. 2.Gelumbauskaitė L. Ž., 1999. Sub – Quaternary surface of the south– eastern Baltic Sea. Baltica 12, 15–18. (Proceedings of the Fifth Marine Geological Conference, Special Publication). 3.Grigelis A., 2011. Research of bedrock geology of the Central Baltic Sea. Baltica 24 (1), 1–12. 4.Grigelis A., Flodén T. (chief scientists); contributors Bjerkéus M., 5.Gelumbauskaitė L.Ž., Repečka M., Jokšas K., Šimkevičius P. (contributors), 1994. Joint Lithuanian – Swedish marine geologicalgeophysical expedition: Report of investigations in the Central Baltic / cruise of R / V ,, Vėjas ”No. 6/48, June 17 – July 2, 1993, no. 14/56, August 20 – September 8, 1994. Department of Baltic Marine Geology, Institute of Geology, Vilnius; Department of Geology and Geochemistry, Stockholm University. Vilnius – Stockholm, Institute of Geology, 1994, 23 pp.