Mass Wasting History Within Lake Ohrid Basin (Albania/Macedonia) Over the Last 600 ka
- 1.8k Downloads
Lake Ohrid (LO), a transboundary lake shared by Macedonia and Albania on the Balkan Peninsula, is not only considered to be the oldest lake in Europe (~2 Ma) but has a long and continuous sedimentary history. An advantage at LO is the availability of hydroacoustic data sets of good quality covering the entire lake basin. The tectonically formed basin is filled with thick undisturbed sediments. However, the overall internal structure of LO is characterized by numerous faults, clinoform structures, and several Mass Transport Deposits (MTDs). By using a seismic chronology model (SCM) correlating seismic reflector packages with Marine Isotope Stages (MIS) we estimate the occurrence of the deepest MTD detected in the southern basin at the transition of MIS9 to MIS8 (~300 ka) defining the onset of the sliding history in LO that is still ongoing today. In general, MTDs are widespread within the basin but they do cluster at active faults. Two large MTDs occurred in the early MIS7 (~230 ka, ~220 ka) and after a quiesence period of about ~70 ka two additional large MTDs have been detected in the late penultimate glacial period MIS6 (~150 ka, 130 ka). MIS5 seemed to be another quiet period with respect to mass wasting. In the younger sedimentary history mass movement is a common process with several large and mid-sized deposits mapped at all stratigraphic levels. The youngest slide deposits are estimated to occur within the last 2,000 years. The main outcome of this paper is a model for the spatial and temporal distribution of mass wasting for Lake Ohrid.
KeywordsLake Ohrid Spatial and temporal distribution Subaquatic slide Sedimentary evolution
We thank the reviewers Alina Polonia (ISMAR, Bologne, Italy ) and Flavio Anselmetti (University Bern, Switzerland ) as well as the editor Joshu Mountjoy (NIWA, New Zealand ). We are grateful for the support of our Macedonian Colleagues as well as all members of the scientific community of the SCOPSCO project. Special thanks to Bernd Wagner from University of Cologne.
- Lindhorst K, Vogel H, Krastel S, Wagner B, Hilgers A, Zander A, Schwenk T, Wessels M, Daut G (2010) Stratigraphic analysis of lake level fluctuations in Lake Ohrid: an integration of high resolution hydro-acoustic data and sediment cores. Biogeosciences 7 (in: Evolutionary and geological history of Balkan lakes Ohrid and Prespa. (eds: B. Wagner, T. Wilke, and V. Brovkin)): Springer, The Netherlands, pp 3531–3548. doi: 10.5194/bgd-7-3651-2010 Google Scholar
- Lindhorst K, Gruen M, Krastel S, Schwenk T (2012) Hydroacoustic analysis of mass wasting deposits in Lake Ohrid (Former Yugoslavian Republic of Macedonia/Albania). In: Yamada Y, Kawamura K, Ikehara K et al (eds) Submarine mass movements and their consequences, vol Advances in Natural and Technological Hazards Research 31. Springer, The Netherlands, pp 245–253Google Scholar
- Lisiecki LE, Raymo ME (2005) A Pliocene‐Pleistocene stack of 57 globally distributed benthic δ18O records. Paleoceanography 20(1):1–17Google Scholar
- Reicherter K, Hoffmann N, Lindhorst K, Krastel S, Fernandez-Steeger T, Grutzner C, Wiatr T (2011) Active basins and neotectonics: morphotectonics of the Lake Ohrid Basin (FYROM and Albania). Z Dtsch Ges Geowiss 162(2):217–234Google Scholar
- Wagner B, Reicherter K, Daut G, Wessels M, Matzinger A, Schwalb A, Spirkovski Z, Sanxhaku M (2008) The potential of Lake Ohrid for long-term palaeoenvironmental reconstructions. Palaeogeog Palaeoclimatol Palaeoecol 259(2–3):341–356Google Scholar
- Wagner B, Wilke T, Krastel S, Zanchetta G, Sulpizio R, Reicherter K, Leng M, Grazhdani A, Trajanovski S, Francke A, Lindhorst K, Levkov Z, Cvetkoska A, Reed J, Zhang X, Lacey J, Wonik T, Baumgarten H, Vogel H (2014) The SCOPSCO drilling project recovers more than 1.2 million years of history from Lake Ohrid. Sci Drill 17:19–29CrossRefGoogle Scholar