Calcare di Bari Stratigraphic range: Valanginian-early Turonian ~ | |
---|---|
Type | Geological formation |
Sub-units | Avvantaggio, Montericco, Palorbitoline, Corato, Bisceglie & Sannicandro Members |
Underlies | Calcare di Altamura |
Overlies | not observed |
Area | 100 km2 (39 sq mi) |
Thickness | Up to 2,000 m (6,600 ft) |
Lithology | |
Primary | Limestone |
Other | Dolomite |
Location | |
Coordinates | 41°12′N16°30′E / 41.2°N 16.5°E Coordinates: 41°12′N16°30′E / 41.2°N 16.5°E |
Approximate paleocoordinates | 24°18′N20°18′E / 24.3°N 20.3°E |
Region | Apulia |
Country | ![]() |
Extent | Apulian Platform |
Type section | |
Named for | Bari |
Named by | Valduga |
Location | Petraro Quarry |
Year defined | 1965 |
Coordinates | 41°17′13″N16°17′08″E / 41.2869°N 16.2855°E |
Region | Apulia |
The Calcare di Bari (Italian for Bari Limestone) is a Cretaceous (Valanginian to early Turonian, spanning approximately 45 million years) geologic formation in Apulia, southeastern Italy. [1] The formation comprises micritic limestones, in places karstified and dolomitized. Rudists and fossil ankylosaur, sauropod and theropod tracks have been reported from the 2,000 metres (6,600 ft) thick formation that was deposited in an inner carbonate platform environment towards the top dominated by rudist reefs.
The Calcare di Bari underlies the Calcare di Altamura, separated by an unconformity. The base of the formation is not recognized in outcrop. [2] [3] The Calcare di Bari is subdivided into the Avvantaggio, Montericco, Palorbitoline, Corato, Bisceglie and Sannicandro Members. [2] The formation crops out around the Bari–Taranto railway. [4]
The formation comprises micritic and dolomitic limestones containing foraminifera with several levels of rudists. The depositional environment of the formation has been interpreted as inner platform with tidal and lagoonal influence. The formation crops out across an area of about 100 square kilometres (39 sq mi), [2] and the total thickness has been estimated at around 2,000 metres (6,600 ft). [3] [5]
From the Valanginian to the early Aptian the present region of Apulia was dominated by a very shallow carbonate platform characterized by tranquil waters, evidenced by the muddy to marly limestones. Deepening occurred in the upper part of the formation with subtidal deposits containing a rudist reefal fauna. [3]
The upper part of the formation is dated to the Cenomanian based on the presence of the microfossils Sauvagesia sharpei , Chrysalidina gradata , Pseudolituonella reicheli , Pseudorhapydionina dubia , Nummofallotia apula , Nezzazata sp. and algae Heteroporella lepina . [6] The uppermost part is dated to the early Turonian. [2]
The formation has provided ichnofossils of: [1]
The Apulia Carbonate Platform in Apulia, Italy was a major palaeogeographic element of the southern margin of the Mesozoic Tethys Ocean. It is one of the so-called peri-Adriatic platforms, which are comparable to the Bahama Banks in their carbonate facies, shape, size, and subsidence rate and, also, in the internal architecture.
The Calcare di Zorzino, Italian for Zorzino Limestone is a Late Triassic (Norian) geological formation in Italy. Pterosaurs and Tanystropheids have been recovered in this formation.
The Calcare di Altamura is a Coniacian to early Campanian geologic formation in Italy. The formation comprises limestones that are highly fractured, in places karstified and dolomitized. Fossil ankylosaur tracks have been reported from the formation.
The Calcare di Cellina (Italian for Cellina Limestone, is a Hauterivian to Aptian geologic formation in Friulia-Venezia Giulia, Italy. Fossil sauropod tracks have been reported from the formation.
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The San Giovanni Rotondo Formation is an Early Cretaceous geologic formation in Italy. Fossil ornithopod tracks have been reported from the formation.
The Angoumian is a geological group restricted to the northern Aquitaine Basin in France. The group consists of two fossiliferous limestone formations deposited during the Turonian.
San Cassiano Formation (Anisian-Carnian) is a geologic formation located on the Southern Alps in the Dolomites. These Triassic dolomites are considered to be a classic example of ancient carbonate platforms. As the allochthonous elements in the Shale strata show a good preservation, fossils and microbialites contained in these elements are useful in detailed geochemical analyses.
The Sierra Madre Formation is a geologic formation in Chiapas state, southern Mexico. It consists of marine dolomites and limestones. The formation dates to the Middle Cretaceous, spanning from the Aptian of the Early to the Cenomanian of the Late Cretaceous.
The Campur Formation (Kca) is a geologic formation of the Petén Basin of northern Guatemala. The subtidal limestone preserves fossils dating back to the Late Cretaceous period.
The Marne de Flize is a geologic formation in France. It preserves fossils dating back to the Toarcian stage of the Jurassic period.
The Bemaraha Formation is a Middle Jurassic geological formation of the Morondava Basin of Madagascar. The lime mudstones, grainstones and limestones of the formation were deposited in lagoonal and reefal environments. Fossils of groups of invertebrates and theropod and sauropod tracks have been found in the formation. The Sahalaly River tracksite yielded a single trackway belonging to a quadrupedal dinosaur, possibly a sauropod. Sauropod tracks are rare, making up as little as 1 percent of the present sample. The best-preserved tracks are assigned to the ichnogenus Kayentapus.
Darwin Guyot is a volcanic underwater mountain top, or guyot, in the Mid-Pacific Mountains between the Marshall Islands and Hawaii. Named after Charles Darwin, it rose above sea level more than 118 million years ago during the early Cretaceous period to become an atoll, developed rudist reefs, and then drowned, perhaps as a consequence of sea level rise. The flat top of Darwin Guyot now rests 1,266 metres (4,154 ft) below sea level.
The Rotzo Formation is a geological formation in Italy, dating to roughly between 189 and 183 million years ago and covering the Pliensbachian stage of the Jurassic Period in the Mesozoic Era. Has been traditionally classified as a Sinemurian-Pliensbachian Formation, but a large and detailed dataset of isotopic 13C and 87Sr/86Sr data, estimated the Rotzo Formation to span only over the whole Pliensbachian. The Rotzo Formation represented the Carbonate Platform, being located over the Trento Platform and surrounded by the Massone Oolite, the Fanes Piccola Encrinite, the Lombadian Basin Medolo Group and Belluno Basin Soverzene Formation, and finally towards the south, deep water deposits of the Adriatic Basin.
The Moltrasio Formation also known as the Lombardische Kieselkalk Formation is a geological formation in Italy. This Formation mostly developed in the Lower or Middle Sinemurian stage of the Lower Jurassic, where on the Lombardian basin tectonic activity modified the current marine and terrestrial habitats. Here it developed a series of marine-related depositional settings, represented by an outcrop of 550–600 m of grey Calcarenites and Calcilutites with chert lenses and marly interbeds, that recovers the Sedrina, Moltrasio and Domaro Formations. This was mostly due to the post-Triassic crisis, that was linked locally to tectonics. The Moltrasio Formation is considered a continuation of the Sedrina Limestone and the Hettangian Albenza Formation, and was probably a shallow water succession, developed on the passive margin of the westernmost Southern Alps. It is known due to the exquisite preservation observed on the Outcrop in Osteno, where several kinds of marine biota have been recovered.
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