title: Sedimentary environment, geotechnical properties and environmental geology of the Pärnu basin of proglacial varved clays
reg no: ETF5681
project type: Estonian Science Foundation research grant
subject: 1.10. Geology
status: accepted
institution: TU Faculty of Biology and Geography
head of project: Tiit Hang
duration: 01.01.2004 - 31.12.2006
description: Compared to the latest developments in the research of proglacial sedimentary environment and palaeogeography of the local proglacial bodies of water in the E (L.Peipsi) and central (L.Võrtsjärv) Estonia, similar studies from the area of the Baltic Ice Lake (BIL) in W Estonia have been missing. At the same time accelerating accumulation of geotechnical data from the Pärnu basin (W Estonia) of glaciolacustrine varved clays (W Est.) creates a fruitful background for further sedimentological, chronological and palaeogeographical interpretations. Varve chronological analysis is expected to contribute to the understanding of glacial dynamics, sedimentary environment, climatic conditions and also to the correlation of late glacial events in the region. Sedimentological interpretation of geotechnical data (distributed all over the basin) is possible through the detail descriptions of nondisturbed (achieved by the Russian type corer) texture and structure of sediments from key sites. The part of basin under the water of the Baltic Sea has never been studied. Recent series of landslides in the Pärnu basin points to the role of environmental geology with the need for the description of mechanics of landslides, modeling and hazard mapping. Relatively small-scale slides with gentle slopes and laminated sediments create a unique possibility for detail sedimentological mapping/description and further comparison with the models. Our main goals of the research are: 1.Sedimentological and palaeogeographical interpretation of existing geotechnical data from the Pärnu basin of glaciolacustrine varved clays 2.Completing the data from the submarine part of the basin in order to record the extremely low water level periods in the history of the Baltic Sea; 3.To create a local varve chronology and enable regional correlations, to contribute to the understanding of chronology of Late-Weichselian events in W Estonia and to complement the late-glacial stratigraphy in Estonia 4.Reconstruction of sedimentary environment and water-level changes of BIL in W Estonia and comparison with the west coast (S Sweden) and revision of existing models 5.Detail sedimentological mapping of a landslide and comparison with the model(s) . Main goals are achieved through the corings in key sites and from the sea ice together with detail sedimentological analysis.

project group
no name institution position  
1.Tiit HangTU Faculty of Biology and Geographyresearcher