| Title | Geothermal Atlas of Lithuania |
|---|---|
| Authors | Vita Rasteniene, Vytautas Puronas |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | Lithuania, geothermal resources, atlas, maps |
| Abstract | Geothermal resources for Republic of Lithuania are assembled in the recently completed Geothermal Atlas of Lithuania. The atlas consists of a set of 33 maps. Tectonic Map of the Baltic States (Suveizdis et al., 1991) has been used to compile the Geothermal Map of Lithuania. Isogeotherms of the crystalline basement are shown on the map. The connection of pre-platform tectonic zones with intensity of present thermal field shows up; especially it is pertain to Taurage-Ogre and Nemunas zones, West Lthuania. The thermal field extremely varies within Telsiai fault zone, West Lithuania. Zoning of geothermal field was carried out, and three zones were distinguished and characterized. The geothermal map set includes 4 maps of tops and bottoms of two Devonian (D2up-D3öv and D1tl-D2pr) hydrothermal complexes; map of Cambrian hydrothermal complex. Maps show variation of temperature within top and bottom of the complex. Isogeotherms are drawn by every +10 ?C. The structural map set consists of 4 maps of tops and bottoms of two Devonian (D2up-D3öv and D1tl-D2pr) hydrothermal complexes; map of Cambrian hydrothermal complex. Nine maps intended to show thickness of complexes, thickness of porous intervals and average porosity of them. Thickness maps of Devonian (D2up-D3öv and D1tl-D2pr); and Cambrian; Productive thickness maps of Devonian (D2up-D3öv and D1tl-D2pr) and Cambrian; Porosity maps of Devonian (D2up-D3öv and D1tl-D2pr) and Cambrian. Seven maps show hydrochemical properties of the thermal water. Two parameters to characterize thermal water were chosen: total mineralization (g/l) and bromine content (mg/l). Two maps featuring a temperature at 100 m depth and geothermal gradient throughout sedimentary cover: geothermal gradient map of Lithuania and map of temperature at 100 m depth in Lithuania. Four maps intended to the geothermal potential of Lithuania: Maps of geothermal resources of Devonian (D2up-D3öv and D1tl-D2pr) and Cambrian as well map of petrogeothermal resources down to 7 km depth in Lithuania. |