Origin of dolomites in oolitic carbonates of the Middle Jurassic Dorgali Formation, eastern Sardinia, Italy: Petrographic and geochemical constraints

Origin of dolomites in oolitic carbonates of the Middle Jurassic Dorgali Formation, eastern Sardinia, Italy: Petrographic and geochemical constraints

The Bathonian-Callovian (Middle Jurassic) Dorgali Formation in eastern Sardinia (Italy) consists of dolomitized oolitic grainstone and records a complex diagenetic history. Petrographic examinations revealed three main phases of replacive (D1, D2) and fracture-filling (D3) dolomites with crystal-siz...

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Veröffentlicht in:Marine and petroleum geology 2022-01, Vol.135, p.105395, Article 105395
Hauptverfasser: Luan, Guoqiang, Azmy, Karem, Berra, Fabrizio, Della Porta, Giovanna, Nembrini, Mattia
Format: Artikel
Sprache:eng
Schlagworte:
Dolomitization
Dorgali formation
Eastern sardinia
Geochemistry
Middle jurassic
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Zusammenfassung:The Bathonian-Callovian (Middle Jurassic) Dorgali Formation in eastern Sardinia (Italy) consists of dolomitized oolitic grainstone and records a complex diagenetic history. Petrographic examinations revealed three main phases of replacive (D1, D2) and fracture-filling (D3) dolomites with crystal-size ranges of
ISSN:0264-8172
1873-4073
DOI:10.1016/j.marpetgeo.2021.105395