POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt
Thin layers of ooid grainstones and/or thin layers and intercalation of tempestite breccias are very frequent as a rhythmic sedimentation members in the shallow—marine, prevailing lagoo-nal, mudstone/wackestone Dogger limestones. Such a sedimentation is a consequence of carbonate mud deposition in l...
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| Format: | Article |
| Language: | English |
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Faculty of Mining, Geology and Petroleum Engineering
1990-12-01
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| Series: | Rudarsko-geološko-naftni Zbornik |
| Subjects: | |
| Online Access: | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=38918&lang=en |
| _version_ | 1797714282225336320 |
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| author | Josip Tišljar |
| author_facet | Josip Tišljar |
| author_sort | Josip Tišljar |
| collection | DOAJ |
| description | Thin layers of ooid grainstones and/or thin layers and intercalation of tempestite breccias are very frequent as a rhythmic sedimentation members in the shallow—marine, prevailing lagoo-nal, mudstone/wackestone Dogger limestones. Such a sedimentation is a consequence of carbonate mud deposition in lagoons and restricted shallows and temporary flooding and deposition of ooid sand and/or coarser detritus by enhanced water energy, i.e. stormy waves. The shallow- marine limestones in the Lower and Middle Dogger comprise zones of carbonate breccias thick several to tens meter, consisting of darkgray »fragments« of mudstone and wackestone and dolomite "cement". This postse-dimentary dolomitization breccias are definitely not synsedimen-tary formation, and became by incomplete late-diagenetic dolomitization of previously tectonized, fractured and crashed Dogger limestones. Their misinterpretation by a synsedimentary process, especially as a intraformational breccia type, since they appeared confomably stratified in the Dogger limestone, may lead to serious mistakes in interpretation of paleomorphology of carbonate platform and erroneous reconstruction of sedimentary environment and depositional conditions for the Dogger limestones (the paper is published in Croatian). |
| first_indexed | 2024-03-12T07:49:57Z |
| format | Article |
| id | doaj.art-8cbd4df1710847c5a19fd410a7667e4a |
| institution | Directory Open Access Journal |
| issn | 0353-4529 1849-0409 |
| language | English |
| last_indexed | 2024-03-12T07:49:57Z |
| publishDate | 1990-12-01 |
| publisher | Faculty of Mining, Geology and Petroleum Engineering |
| record_format | Article |
| series | Rudarsko-geološko-naftni Zbornik |
| spelling | doaj.art-8cbd4df1710847c5a19fd410a7667e4a2023-09-02T20:43:34ZengFaculty of Mining, Geology and Petroleum EngineeringRudarsko-geološko-naftni Zbornik0353-45291849-04091990-12-01215965POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT MtJosip Tišljar 0Faculty of Mining, Geology and Petroleum Engineering, University of Zagreb, Pierottijeva 6, HR-10000 Zagreb, CroatiaThin layers of ooid grainstones and/or thin layers and intercalation of tempestite breccias are very frequent as a rhythmic sedimentation members in the shallow—marine, prevailing lagoo-nal, mudstone/wackestone Dogger limestones. Such a sedimentation is a consequence of carbonate mud deposition in lagoons and restricted shallows and temporary flooding and deposition of ooid sand and/or coarser detritus by enhanced water energy, i.e. stormy waves. The shallow- marine limestones in the Lower and Middle Dogger comprise zones of carbonate breccias thick several to tens meter, consisting of darkgray »fragments« of mudstone and wackestone and dolomite "cement". This postse-dimentary dolomitization breccias are definitely not synsedimen-tary formation, and became by incomplete late-diagenetic dolomitization of previously tectonized, fractured and crashed Dogger limestones. Their misinterpretation by a synsedimentary process, especially as a intraformational breccia type, since they appeared confomably stratified in the Dogger limestone, may lead to serious mistakes in interpretation of paleomorphology of carbonate platform and erroneous reconstruction of sedimentary environment and depositional conditions for the Dogger limestones (the paper is published in Croatian).http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=38918&lang=enPostsedimenrary dolomitization breccia: Jurassic shallowmarine carbonates of the Velebit Mt.rhythmic peritidal sedimentationtempestites: late-digenetic dolomitization |
| spellingShingle | Josip Tišljar POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt Rudarsko-geološko-naftni Zbornik Postsedimenrary dolomitization breccia: Jurassic shallowmarine carbonates of the Velebit Mt. rhythmic peritidal sedimentation tempestites: late-digenetic dolomitization |
| title | POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt |
| title_full | POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt |
| title_fullStr | POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt |
| title_full_unstemmed | POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt |
| title_short | POSTSEDIMENTARY DOLOMITIZATION BRECCIAS IN THE JURRASIC SHALLOW-MARINE CARBONATE SEDIMENTS OF THE MALI ALAN – SOUTH VELEBIT Mt |
| title_sort | postsedimentary dolomitization breccias in the jurrasic shallow marine carbonate sediments of the mali alan south velebit mt |
| topic | Postsedimenrary dolomitization breccia: Jurassic shallowmarine carbonates of the Velebit Mt. rhythmic peritidal sedimentation tempestites: late-digenetic dolomitization |
| url | http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=38918&lang=en |
| work_keys_str_mv | AT josiptisljar postsedimentarydolomitizationbrecciasinthejurrasicshallowmarinecarbonatesedimentsofthemalialansouthvelebitmt |