The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia
<div>On the south-western slope of Medvednica Mt., an 83 m thick</div><div>geological column Kostanjek-1, composed of strata representing the</div><div>Sarmatian and Pannonian stages, was investigated in detail. Facies</div><div>analysis allowed separation o...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Croatian Geological Survey
2010-11-01
|
| Series: | Geologia Croatica |
| Subjects: | |
| Online Access: | http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/276 |
| _version_ | 1818109720169283584 |
|---|---|
| author | Davor Vrsaljko |
| author_facet | Davor Vrsaljko |
| author_sort | Davor Vrsaljko |
| collection | DOAJ |
| description | <div>On the south-western slope of Medvednica Mt., an 83 m thick</div><div>geological column Kostanjek-1, composed of strata representing the</div><div>Sarmatian and Pannonian stages, was investigated in detail. Facies</div><div>analysis allowed separation of five lithofacies units (A, AB, B, C and</div><div>D) and the sedimentary mechanisms for particular successions were</div><div>defined. A rich community of fossil molluscs (50 species) and ostracods</div><div>(42 species) was sampled and determined. From these fossil</div><div>determinations, the sediment age was defined, and biofacies analysis</div><div>allowed the determination of three basic palaeobiocenosis types: 1) a</div><div>community from Sarmatian brackish lagoons, 2) a community from</div><div>an Early Pannonian littoral lake, and 3) a lake basin community in the</div><div>Late Pannonian. The main ÒrecordÓ of the salinity crisis (drop) at the</div><div>Sarmatian-Pannonian boundary influences in a selective way the</div><div>majority of organisms, and is shown best in the evolutionary form</div><div>changes of cardid bivalves, for which phylogenetic series were made.</div><div>On the basis of dominant and characteristic forms in the entire association of Pannonian molluscs five biozones were separated: I) Lymno cardium praeponticum acrozone, II) Radix croatica - L y m n o c a r d i u m plicataeformis - Gyraulus praeponticus cenozone, III) Neodelminiella venusta - Lymnocardium cekusi cenozone, IV) Congeria banatica - Lymnocardium gorjanovici - Gyraulus tenuistriatus cenozone and V) Congeria czjzeki - Lymnocardium winkleri - Gyraulus tenuistriatus</div><div>cenozone. Many ostracod forms supply and test the stratigraphic value</div><div>of molluscs and support zonality of Pannonian layers.</div> |
| first_indexed | 2024-12-11T02:35:44Z |
| format | Article |
| id | doaj.art-6d81f1b191a54d379296c7997b17e26d |
| institution | Directory Open Access Journal |
| issn | 1330-030X 1333-4875 |
| language | English |
| last_indexed | 2024-12-11T02:35:44Z |
| publishDate | 2010-11-01 |
| publisher | Croatian Geological Survey |
| record_format | Article |
| series | Geologia Croatica |
| spelling | doaj.art-6d81f1b191a54d379296c7997b17e26d2022-12-22T01:23:44ZengCroatian Geological SurveyGeologia Croatica1330-030X1333-48752010-11-0152192710.4154/GC.1999.02187The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., CroatiaDavor Vrsaljko0Croatian Natural History Museum<div>On the south-western slope of Medvednica Mt., an 83 m thick</div><div>geological column Kostanjek-1, composed of strata representing the</div><div>Sarmatian and Pannonian stages, was investigated in detail. Facies</div><div>analysis allowed separation of five lithofacies units (A, AB, B, C and</div><div>D) and the sedimentary mechanisms for particular successions were</div><div>defined. A rich community of fossil molluscs (50 species) and ostracods</div><div>(42 species) was sampled and determined. From these fossil</div><div>determinations, the sediment age was defined, and biofacies analysis</div><div>allowed the determination of three basic palaeobiocenosis types: 1) a</div><div>community from Sarmatian brackish lagoons, 2) a community from</div><div>an Early Pannonian littoral lake, and 3) a lake basin community in the</div><div>Late Pannonian. The main ÒrecordÓ of the salinity crisis (drop) at the</div><div>Sarmatian-Pannonian boundary influences in a selective way the</div><div>majority of organisms, and is shown best in the evolutionary form</div><div>changes of cardid bivalves, for which phylogenetic series were made.</div><div>On the basis of dominant and characteristic forms in the entire association of Pannonian molluscs five biozones were separated: I) Lymno cardium praeponticum acrozone, II) Radix croatica - L y m n o c a r d i u m plicataeformis - Gyraulus praeponticus cenozone, III) Neodelminiella venusta - Lymnocardium cekusi cenozone, IV) Congeria banatica - Lymnocardium gorjanovici - Gyraulus tenuistriatus cenozone and V) Congeria czjzeki - Lymnocardium winkleri - Gyraulus tenuistriatus</div><div>cenozone. Many ostracod forms supply and test the stratigraphic value</div><div>of molluscs and support zonality of Pannonian layers.</div>http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/276MolluscaCardiidaeLymnocardiidaePhylogenetic seriesBiozonePannonianPannonian basinMedvednica Mt.Croatia |
| spellingShingle | Davor Vrsaljko The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia Geologia Croatica Mollusca Cardiidae Lymnocardiidae Phylogenetic series Biozone Pannonian Pannonian basin Medvednica Mt. Croatia |
| title | The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia |
| title_full | The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia |
| title_fullStr | The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia |
| title_full_unstemmed | The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia |
| title_short | The Pannonian Palaeoecology and Biostratigraphy of Molluscs from Kostanjek - Medvednica Mt., Croatia |
| title_sort | pannonian palaeoecology and biostratigraphy of molluscs from kostanjek medvednica mt croatia |
| topic | Mollusca Cardiidae Lymnocardiidae Phylogenetic series Biozone Pannonian Pannonian basin Medvednica Mt. Croatia |
| url | http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/276 |
| work_keys_str_mv | AT davorvrsaljko thepannonianpalaeoecologyandbiostratigraphyofmolluscsfromkostanjekmedvednicamtcroatia AT davorvrsaljko pannonianpalaeoecologyandbiostratigraphyofmolluscsfromkostanjekmedvednicamtcroatia |