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Wyświetlanie 1-2 z 2
Tytuł:
Characterization of near-surface sediments based on combined geoelectric studies at Starunia palaeontological site and vicinity (Carpathian region, Ukraine)
Autorzy:
Mościcki, W. J.
Powiązania:
https://bibliotekanauki.pl/articles/191560.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
geoelectric survey
DC resistivity soundings
electromagnetic terrain conductivity measurements
resistivity imaging
penetrometer-based resistivity profiling
Starunia
Ukraine
Opis:
Combined geoelectric research was performed in the Starunia area, where the specimens of woolly rhinoceros were discovered at the beginning of the 20th century. The work included: DC resistivity soundings, electromagnetic terrain conductivity measurements, resistivity imaging and penetrometer-based resistivity profiling. The main purpose of the survey was to give geoelectric characterization of near-to-surface sediments and estimate their variability (extent, thickness and electric resistivity). Generally, resistivity of geological strata is low and decreases with depth but its spatial distribution is locally complex. This complexity reflects joint effects caused by the presence of salty underground water outflows from the salt-bearing Miocene Vorotyshcha beds into the Quaternary sediments, distinct transformations of the geological medium by former ozokerite and oil exploitation and current activity of the natural geological processes in the area.
Źródło:
Annales Societatis Geologorum Poloniae; 2009, 79, No 3; 333-342
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electric resistivity and compactness of sediments in the vicinity of boreholes drilled in the years 2007-2008 in the area of Starunia palaeontological site (Carpathian region, Ukraine)
Autorzy:
Mościcki, W. J.
Sokołowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/191564.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Geologiczne
Tematy:
geological boreholes
geoelectric survey
DC azimuthal pole-dipole resistivity soundings
penetrometer-based resistivity profiling
penetration velocity measurements
Starunia
Ukraine
Opis:
Geoelectric research aiming to assess heterogeneity of geological environment was carried out in the Starunia area, where the unique specimens of woolly rhinoceros were discovered at the beginning of the 20th century. The DC azimuthal pole-dipole resistivity soundings and penetrometer-based resistivity profiling with simultaneous penetration-velocity measurements were used to study variability of environment in the vicinity of geological boreholes. No evident correlation was found between lithology of drilled sediments and geophysical data. Nevertheless, remarkable horizontal and vertical variability of geophysical parameters were observed. The largest horizontal changes may reflect an existence of some sharp boundaries in study area. The measured physical properties of geological strata: electric resistivity and compactness (estimated from penetration velocity) change also with the depth but correlation with geological structure can be found in limited cases only. Registered variability may have originated from several reasons: complex geological arrangement of shallow layers, salty underground water and bitumen presence in voids and pores, influence of neotectonic activity, and/or from transformations of near surface environment caused by past mining activity.
Źródło:
Annales Societatis Geologorum Poloniae; 2009, 79, No 3; 343-355
0208-9068
Pojawia się w:
Annales Societatis Geologorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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