- Tytuł:
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Radiometric dating of the Tertiary volcanics in Lower Silesia, Poland. III. K-Ar and palaeomagnetic data from Early Miocene basaltic volcanics near Jawor, Fore-Sudetic Block
Datowanie radiometryczne trzeciorzędowych wulkanitów Dolnego Śląska. III. Daty K-Ar i wyniki badań paleomagnetycznych dolnomioceńskich skał bazaltowych okolic Jawora (Blok Przedsudecki) - Autorzy:
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Birkenmajer, K.
Pécskay, Z.
Grabowski, J.
Lorenc, M. W.
Zagożdżon, P. P. - Powiązania:
- https://bibliotekanauki.pl/articles/191562.pdf
- Data publikacji:
- 2002
- Wydawca:
- Polskie Towarzystwo Geologiczne
- Tematy:
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K-Ar dating
basaltic rocks (basanite, olivine basalt)
palaeomagnetism
Early Miocene (Aquitanian, Burdigalian)
Lower Silesia
Polska - Opis:
- The K-Ar dating of Tertiary basaltic rocks near Jawor, Lower Silesia (Poland), included the sites at Winna Góra (plug) and at Męcinka (lava flow, and vent/dyke), well exposed in working quarries. According to new geochemical data, these rocks, classified so-far as trachyandesites, have been reclassified as basanite and olivine basalt. Early Miocene (Aquitanian) K-Ar ages, have been obtained from the basanite lava flow at Męcinka (21.05š0.85 Ma), and from the basanite plug at Winna Góra (21.62š0.93 Ma, and 21.96š1.36 Ma, respectively). An olivine basalt vent/dyke which cuts the lava flow at Męcinka yielded a younger (Burdigalian) K-Ar age (18.66š0.82 Ma). New palaeomagnetic analysis confirmed the results of previous studies that these rocks were magnetized during a reversed regime of geomagnetic field. The basanite (plug and lava) K-Ar dates spread over reversed parts of the magnetozones C6A and C6B. A significantly younger K-Ar date from olivine basalt intrusion might be correlated either with the C5D or the C5E magnetozones.
- Źródło:
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Annales Societatis Geologorum Poloniae; 2002, 72, No 3; 241-253
0208-9068 - Pojawia się w:
- Annales Societatis Geologorum Poloniae
- Dostawca treści:
- Biblioteka Nauki
Artykuł