GEOCHEMICAL CRITERIA FOR THE INVESTIGATION OF FACIES FEATURES OF PANTIAN BASINS IN EASTERN AZERBAIJAN

Yıl 1999, Cilt: 121 Sayı: 121, 57 - 57, 01.02.1999

Saday Azadoğlu Aliyev Aynur Büyükutku

Öz

In this study, distrubitons and
environmental conditions of the mollusc fauna which lived in the evolution of
Pontian seas of Azerbaijan were investigated. The research of the environment
conditions were based on the determination of conditionuos geochemical relation
which was between the organism and environment. Interpretation of the
distribution differences of the Ba. Sr. Mg and Ca in the shell and deposits
were indicated the salinity, temperature and paleofacies of the basin at the
Ponsien age mentioned above. Detailed investigations indicated that, the reason
of the widely appearances of in marine envi ronments depended on the
lithofacies properties of deposits, such that in the shallow marine facies
deposits contain more barium. In any case the barium content of mollusc species
belong to this facies are more than the other ones. Absolute temperatures of
fauna and deposits formation environments were determined by Ca/Mg method
during the development of the Ponsien seas. These are, in the early Ponsien age
the temperature was 21-22° C, in the Middle Ponsien age the temperature was
20.6- 21.5 C and in late Ponsien age the temperature was 21.5-22° C and it was
determined that the temperatures were constant. In fact, it was proved that
there is no balance between the Sr distribution of shell and deposits Sr amount
in the deposits is less than the Sr amounts in the shells as a results, it is
seen that the main parameter which controls the distribution of the Sr is the
salinity rate of the environment. That is why, it is concrete that the
lacustrine mollusc Sr amount is poor than the marine mollusc Hence. Sr is an
element which determines the salinity regime of the environment. It can be seen
that, in the determination of the environment conditions of biogeochemical
methods can also be used together with the other methods.

Anahtar Kelimeler

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Kaynakça

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