ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC
This work analyses the development of reefs, which represent thick morphologically expressed carbonate massifs created by the activity of frame-forming organisms. Major stages in the development of reefs include the periods of Early Cambrian, Ordovician, Silurian-Devonian, Late Viséan-Serpukhovian a...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | Russian |
| Published: |
Sergo Ordzhonikidze Russian State University for Geological Prospecting
2020-07-01
|
| Series: | Известия высших учебных заведений: Геология и разведка |
| Subjects: | |
| Online Access: | https://www.geology-mgri.ru/jour/article/view/590 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1839590271241682944 |
|---|---|
| author | V. G. Kuznetsov |
| author_facet | V. G. Kuznetsov |
| author_sort | V. G. Kuznetsov |
| collection | DOAJ |
| description | This work analyses the development of reefs, which represent thick morphologically expressed carbonate massifs created by the activity of frame-forming organisms. Major stages in the development of reefs include the periods of Early Cambrian, Ordovician, Silurian-Devonian, Late Viséan-Serpukhovian and Permian, the upper boundaries of which are generally determined by mass extinction events.The main reef builders during the Early Cambrian were archaeocyatha and epiphytaceans, while Ordovician reefs were created by sponges, stromatoporoids, tabulata and bryozoans. Stromatoporoid, tabulata, rugose and, to a lesser extent, bryozoans were the reef builders during the longest Silurian-Devonian period. Bryozoans and corals served as the frame-forming organisms for Upper Viséan-Serpukhovian reefs. However, during the Permian, reefs were built primarily by sponges and, to a lesser extent, by bryozoans and corals.It is shown that there is no strict correspondence between the termination of reef formation and the beginning of extinction events. During extinction periods, potential reef builders did exist, although beyond the reef biocoenosis structure. Similarly, the beginning of reef formation occurs somewhat later than the appearance of the corresponding frame-forming organisms. Apparently, it takes time for organisms to develop such a biocoenosis that could trigger the formation of reef ecosystems. Reef ecosystems are stable under relatively constant external conditions, changes in which cause first the degradation of the biocoenosis and then the extinction of its constituent organisms. Therefore, the process of reef formation is terminated before the actual extinction of organisms. |
| format | Article |
| id | doaj-art-d29153a5fb114943a7e8d81d61d90c6e |
| institution | Matheson Library |
| issn | 0016-7762 2618-8708 |
| language | Russian |
| publishDate | 2020-07-01 |
| publisher | Sergo Ordzhonikidze Russian State University for Geological Prospecting |
| record_format | Article |
| series | Известия высших учебных заведений: Геология и разведка |
| spelling | doaj-art-d29153a5fb114943a7e8d81d61d90c6e2025-08-03T13:09:37ZrusSergo Ordzhonikidze Russian State University for Geological ProspectingИзвестия высших учебных заведений: Геология и разведка0016-77622618-87082020-07-0111546210.32454/0016-7762-2020-63-1-54-62426ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOICV. G. Kuznetsov0National University of Oil and Gas; Oil and Gas Research Insnitute, Russian Academy of SciencesThis work analyses the development of reefs, which represent thick morphologically expressed carbonate massifs created by the activity of frame-forming organisms. Major stages in the development of reefs include the periods of Early Cambrian, Ordovician, Silurian-Devonian, Late Viséan-Serpukhovian and Permian, the upper boundaries of which are generally determined by mass extinction events.The main reef builders during the Early Cambrian were archaeocyatha and epiphytaceans, while Ordovician reefs were created by sponges, stromatoporoids, tabulata and bryozoans. Stromatoporoid, tabulata, rugose and, to a lesser extent, bryozoans were the reef builders during the longest Silurian-Devonian period. Bryozoans and corals served as the frame-forming organisms for Upper Viséan-Serpukhovian reefs. However, during the Permian, reefs were built primarily by sponges and, to a lesser extent, by bryozoans and corals.It is shown that there is no strict correspondence between the termination of reef formation and the beginning of extinction events. During extinction periods, potential reef builders did exist, although beyond the reef biocoenosis structure. Similarly, the beginning of reef formation occurs somewhat later than the appearance of the corresponding frame-forming organisms. Apparently, it takes time for organisms to develop such a biocoenosis that could trigger the formation of reef ecosystems. Reef ecosystems are stable under relatively constant external conditions, changes in which cause first the degradation of the biocoenosis and then the extinction of its constituent organisms. Therefore, the process of reef formation is terminated before the actual extinction of organisms.https://www.geology-mgri.ru/jour/article/view/590reefsreef ecosystemmass extinctionspaleozoic |
| spellingShingle | V. G. Kuznetsov ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC Известия высших учебных заведений: Геология и разведка reefs reef ecosystem mass extinctions paleozoic |
| title | ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC |
| title_full | ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC |
| title_fullStr | ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC |
| title_full_unstemmed | ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC |
| title_short | ASYNCHRONOUS DEVELOPMENT OF REEFS AND REEF-BUILDING BIOTA. PALEOZOIC |
| title_sort | asynchronous development of reefs and reef building biota paleozoic |
| topic | reefs reef ecosystem mass extinctions paleozoic |
| url | https://www.geology-mgri.ru/jour/article/view/590 |
| work_keys_str_mv | AT vgkuznetsov asynchronousdevelopmentofreefsandreefbuildingbiotapaleozoic |