Borehole OP-1 (Oravská Polhora) Description of rock fragments and by mercy2beans120

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									Borehole OP-1 (Oravská Polhora)


Description of rock fragments and thin sections


 15m - clay marl, color dominately grey; accsessories ∑15%: quartz, muscovite, calcite

 20m - clay marl + fragments of siltstones, color dominately grey; accsessories ∑15%:
     quartz, muscovite, calcite

 25m - clay marl + fragments of siltstones + fragments fine grained sandstones (quartz
     sandstone, subgraiwacke), color dominately grey

 30m - clay marl + fragments of siltstones + fragments fine grained sandstones (quartz
     sandstone, subgraiwacke), color dominately grey

 35m - sandy clay marl with fragments of fine grained sadstones (with biotite and
     glauconite), color dominately grey

 40m - sandy clay marl with siltstone fragments, color dominately grey

 45m - clay marl with siltstone fragments + calcite grains, color dominately grey

 50m - clay with siltstone fragments (lot of biotite), color dominately grey

 55m - clay with siltstone fragments (lot of biotite), color dominately grey

 60m - clay marly sandstones (quartzose sanstones with glauconite, fine grained
     subgraiwackes, siltstones), color dominately grey

 65m - clay marly sandstones (mainly subgraiwackes), color dominately grey

       In thin section:
       The pelites are formed as claey carbonate matrix; accesories: quartz, muscovite,
       feldspars (orthoclase and plagioclase), organic matter.

 70m - clay marly sandstones, color dominately grey

 75m - fragments of silstones and fine grained sandstones, color dominately grey

 80m - predominate fine grained sandstones with lot of calcite veins, color dominately grey

 85m - fine grained laminated sandstones (lot of biotites, petrographically dominated
     quartzose sandstones and subgraiwackes, as well as siltstones), color dominately grey

 90m - clay stones with micas fine grained sandstones, sporadically glauconite, color
     dominately grey

 95m - fine grained sandstones dominated, color dominately grey
 100m - fine grained quartzose sandstones and subgraiwackes (lot of glauconite
      predominate), color dominately grey

 105m - fine grained quartzose sandstones, color dominately grey

 110m - fine grained carbonate sandstones, color dominately grey

       In thin section:
       fine grained calcarenites with carbonate fragments and carbonate matrix

115m - siltstones predominated, color dominately grey

120m - siltstones predominated and calcite fragments, color dominately grey

125m - siltstones predominated and calcite fragments, color dominately grey

130m - siltstones predominated and calcite fragments, color dominately grey

135m - clay in predominated clay medium sometimes occurs siltstones fragments, color
     dominately grey

140m - clay in predominated clay medium sometimes occurs siltstones fragments, color
     dominately grey

145m - pelitic clay matrix predominate, color dominately grey

150m - clay, color   dominately grey

155m - clay with sandstone fragments, color dominately grey

160m - clay with fragments of laminated (mainly botite) sitstones, color dominately grey

165m - clay with fine grained sandstones and calcite veins, color dominately grey

170m - clay with fine grained sandstones and calcite veins, color dominately grey

175m - clay with fine grained sandstones and calcite veins, color dominately grey

180m - clay with fine graned sandstones and calcite veins, color dominately grey

       In thin section:
       fain grained sandstone (Md 0,12 mm, quartz 70-90%, feldspars 1-2%, matrix 5-10%,
       glauconite 1-2%, calcite cement 1-2%)
       thin section showes of clay extremely high contens of carbonate matrix

185m - clay with quartzose sandstone and siltstones, color dominately grey

190m - clay with siltstone fragments, color dominately grey
195m - clay with siltstone fragments, color dominately grey

200m - clay and rock fragments siltstones predominate, color dominately grey

300m - clay and rock fragments siltstones predominate, color dominately grey

								
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