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Impact-induced and diagenetic changes in minerals in the sandy ejecta of the Kärdla crater,NW Estonia
impact craters ejecta shock metamorphism C-rich particles stable carbon isotopes
2009/10/22
The sand-rich ejecta containing a considerable amount of mineral grains with impact-induced features was studied in five boreholes drilled around the Kärdla impact meteorite structure. Quartz gra...
Sedimentary record of heavy metals in Lake Rõuge Liinjärv,southern Estonia
heavy metals 210Pb dating sediments Lake Rõ uge Liinjä rv
2009/10/21
Anthropogenic impact on Lake Liinjärv (Rõuge, southern Estonia) was studied back to the mid-19th century on the basis of heavy metals (Pb, Cu, Zn, Mn, and Hg) and geochemical parameters of...
Litorina Sea sediments of ancient Vääna Lagoon,northwestern Estonia
Litorina Sea transgression diatoms pollen radiocarbon dating Vä ä na Lagoon
2009/10/21
Vääna Lagoon (59°22′30″N, 24°25′00″E) is located 25 km west of Tallinn in ancient Vääna Klint Bay at a 22 m Litorina Sea isobase. Lagoonal deposits were reinvestigated and new resu...
Thallophytic algal flora from a new Silurian Lagerstätte
Silurian Konservat-Lagerstä tte thallophytic algae Estonia
2009/10/21
Algae have always been the most diverse and numerous eukaryotic autotrophs in marine ecosystems. Both fossil and molecular data point to an early Proterozoic origin for algae. Although known for their...
Palaeolimnological assessment of environmental change over the last two centuries in oligotrophic Lake Nohipalu Valgjärv,southern Estonia
lake sediment diatoms 210Pb chronology reference conditions Lake Nohipalu Valgjä rv
2009/10/21
The main objectives of this study were to reconstruct the environmental conditions for a small oligotrophic lake during the last two centuries, to determine if the environment of the lake was anthropo...