CASPIAN SEA GEODYNAMICAL EVOLUTION EFFECT ON THE SEA LEVEL CHANGING ALONG THE QUATERNARY PERIOD

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Published: Jun 8, 2007
DOI: https://doi.org/10.12681/bgsg.16584
Keywords:
biostratigraphy gastropod Caspian Sea fluctuation mollusc Holocene epoch
H. Khoshravan
Caspian Sea research & study center, Water Research Institute
Abstract

The Caspian Sea as the largest lake in the world has different characteristics considering geosciences (Fig. I). In fact sea level changing is the most important happening in this region. Annually fluctuation impact on surrounding coastal area has serious damage and human society meet frequent destroyed phenomena. In this paper we are trying to reconstruct rapid Sea level changing in Holocene epoch by use paleontology evidences such as: Mollusks fossil and sedimentary fades record. In this research 254 Quaternary sediment core samples from exploring petroleum wells (M-l, G3-A) have been evaluated considering above mentioned and also more than 130 sea bottom recent sediments on view of biofacies and biostratigraphy studied. Our investigation results show that in the Caspian Sea basin at the Holocene epoch there are many periodic sea level fluctuations and climatologie impact is most important agent for sea level changing in this basin. Data results are showing that in the studied area there were many periodic rapid sea levels changing during the Quaternary period. The Caspian Sea has several fluctuations along 10,000years ago and its latest begin about 25years ago. Finally we can conclude that Caspian Sea level fluctuation could continue at future similar past time and climatologie impact and tectonic movement are important agents for sea level changing in this region

Article Details
  • Section
  • Tectonic- Dynamic- Applied Geology
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References
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