Challenges and Insights: Sequence Stratigraphy of Pannonian Coals in the Drmno Depression, Serbia
Објеката
- Тип
- Саопштење са скупа штампано у изводу
- Верзија рада
- објављена
- Језик
- енглески
- Креатор
- Anastasia Ninić, Dragana Životić, Dejan Radivojević
- Извор
- 10th International workshop Neogene of Central and South-Eastern Europe, Podčetrtek, Slovenia, May 27 to 31 , 2024
- Издавач
- Geological Survey of Slovenia
- Датум издавања
- 2024
- Сажетак
-
The application of sequence stratigraphy on coal beds worldwide has significantly contributed to the under¬standing of coal deposits and their origin. On the southeastern edge of the Serbian part of the Panno¬nian basin, there is a system of peri-Pannonian basins characterized by the appearance of Upper Miocene coal seams in the siliciclastic fill, which provides an ex¬cellent opportunity for testing sequence stratigraphy in young coal basins. In this study, sequence stratigraphy was applied to coals in the Drmno Depression, which presents a challenge to traditional prospecting meth¬ods due to its lack of lateral continuity.
The deposition of siliciclastics was formed in the upper delta plain, which then transitioned into alluvial chan¬nels with segments of swamps where peat accumu¬lated. The accumulation of peat and siliciclastics was cyclical, from the geometry of the layers, it is evident that the center of peat accumulation moved vertically, due to the inability of horizontal expansion as a result of the developed vegetation (Gradzinski et al., 2003).
Four sedimentological units were distinguished based on geophysical logging data, seismic profiles, and field data. The sedimentation cycle of each unit commenc¬es with fine-grained siliciclastics of the upper delta plain, followed by coarse-grained siliciclastics of allu¬vial channels, and ends with the accumulation of peat and the formation of coal. The units located in the deeper parts of the basin were determined by using overlapping seismic data and geophysical logging data. However, only the upper part of the second unit was visible on the open section, so they are classified as as-sumed. On the other hand, the third and fourth units are located in shallower parts and were defined based on both well data and field data from open sections and are therefore classified as certain.
The age of the youngest sedimentological unit was determined by biostratigraphy, based on the differ¬ent species of Prosodacnomya bivalva. The discovery of Prosodacnomya carbonifera in the southern region re¬vealed an age of 7.5-8 million years (Radivojević et al., 2022), while the discovery of Prosodacnomya elongata in the northern part indicated an age of 7.2 million years (Radivojević et al., 2022).
- Шира категорија рада
- М30
- Ужа категорија рада
- М34
- Права
- Отворени приступ
- Лиценца
- All rights reserved
- Формат
Anastasia Ninić, Dragana Životić, Dejan Radivojević. "Challenges and Insights: Sequence Stratigraphy of Pannonian Coals in the Drmno Depression, Serbia" in 10th International workshop Neogene of Central and South-Eastern Europe, Podčetrtek, Slovenia, May 27 to 31 , 2024, Geological Survey of Slovenia (2024)
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