Permian Bolzano Volcanic Complex, Southern Italy: Artinskian - Zechstein, Italy
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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cf. Scheuringipollenites sp. microspore
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cf. Jugasporites sp. microspore
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Plantae indet. microspore
Haeckel 1866
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| Bisaccate monolete | ||||||||||
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Plantae indet. microspore
Haeckel 1866
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| Bisaccate taeniate | ||||||||||
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Plantae indet. microspore
Haeckel 1866
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| Monosaccate trilete | ||||||||||
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? Plantae indet. microspore
Haeckel 1866
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| Cavate trilete | ||||||||||
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Alisporites sp. microspore
Daugherty 1941
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Monolete verrucate microspore
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Pinopsida
- Pinales
- Taxaceae
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cf. Striatopodocarpites sp. microspore
Sedova 1956
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unclassified
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Florinites cf. mediapudens microspore
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Nuskoisporites sp. microspore
Potonié and Klaus
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| see common names | ||||||||||
Geography
| Country: | Italy |
| Coordinates: | 46.5° North, 11.3° East (view map) |
| Paleocoordinates: | 0.6° North, 26.4° East |
| Basis of coordinate: | based on nearby landmark |
| Altitude: | 541 meters |
| Geographic resolution: | basin |
Time
| Period: | Permian | Epoch: | Cisuralian - Lopingian |
| Stage: | Artinskian - Wuchiapingian | 10 m.y. bin: | Permian 2 - Permian 4 |
| *Period: | Early/Lower Permian | *Epoch: | Late/Upper Rotliegendes - Early/Lower Zechstein |
| *International age/stage: | Artinskian - Ufimian | ||
| Key time interval: | Artinskian - Zechstein | ||
| Age range of interval: | 290.1 - 254.14 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Local section: | Permian Bolzano Volcanic Complex, | ||||
| Stratigraphy comments: The Gröden Formation, which overlies the Bolzano Volcanic Complex, has yielded a wealth of paleontological and biostratigraphical information.(Palynomorphs, tetrapod footpronts, and a marine fauna which includes orthocone nautiloids.) and is aged at Midian – Dzhulfian ( Late Permian ) | |||||
Lithology and environment
| Lithology description: The Bolzano Volcanic Complex sequence consists primarily of ignimbrites, pyroclastics and subordinate rhyodacitic lava flows and andesitic rocks. The succession can be roughly divided into a lower group dominated by andesitic to dacitic-rhyodacitic volcanic rocks and an upper group consisting of rhyodacitic to rhyolithic volcanic rocks. Inter volcanic sediments including silica layers inetrcalate with stromatolitic carbonates, sandstones, siltstones and mudstones. They are interpreted as fluvial lacustrine sediments deposite during volcanic quiescence. Clastic sediments containing weathered volcanic rock transported to small basins formed by volcanotectonic processes within the Bolzan Volcanic Complex are the result of sheet floods and debris flows. The precence of soft-sediment deformation structures, shrinkage features and pristine three-dimensionally preserved palynomorphs suggests very early diagenetic precipitation and consolidation prior to mechanical compaction of sediment. | |
| Geology comments: The Permian succession consist of two tectono-sedimentary cycles.
The first involves infilling of small intermontane grabens, or half-grabens and is dominated by alluvial fan and lacustrine sediments and volcanics. The second cycle, which begins above a marked unconformity, consists of fluvial, coastal sabkha and shallow marine deposits. These cover the sediments of the lower tectono-sedimentary cycle and the structural highs in between. The Bolzano Volcanic complex belongs to the lower cycle. Semiarid to arid climate. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection methods: | selective quarrying,chemical,mechanical,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Collection method comments: Exlcuding scattered plant macrofossil remains, which do not allow precise age assignments. No biostratigraphic data are available from the Bolzano Volcanic Complex. | |
| Taxonomic list comments:The miospore assemblage from the Bolzano Volcanic Complex is quite divers compared to assemblages from sediments of similar age in western eurape | |
Metadata
| Database number: | 31448 | ||
| Authorizer: | C. Looy | Enterer: | W. Puijk |
| Modifier: | W. Puijk | Research group: | paleobotany |
| Created: | 2003-05-14 01:20:44 | Last modified: | 2003-05-14 04:22:00 |
| Access level: | the public | Released: | 2003-05-14 01:20:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 8493. | C. Hartkopf-Fröder, G. D. Wood, and K. Krainer. 2001. Palynology of the Permian Bolzano Volcanic Complex, Southern Alps, Italie, part 1: miospore preservation, quantitative spore color and quantitative fluorescene microscopy. American Association of Stratigraphic Palynologists Foundation 79-97 [C. Looy/W. Puijk/W. Puijk] |