Source-rock distribution model of the periadriatic region

Journal Article · Tue Mar 01 04:00:00 EST 1994 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:7120034

Zappaterra, E ^[1]

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1. Chevron Companies, London (United Kingdom)

The Periadriatic area is a mosaic of geological provinces comprised of spatially and temporally similar tectonic-sedimentary cycles. Tectonic evolution progressed from a Triassic-Early Jurassic (Liassic) continental rifting stage on the northern edge of the African craton, through an Early Jurassic (Middle Liassic)-Late Cretaceous/Eocene oceanic rifting stage and passive margin formation, to a final continental collision and active margin deformation stage in the Late Cretaceous/Eocene to Holocene. Extensive shallow-water carbonate platform deposits covered large parts of the Periadriatic region in the Late Triassic. Platform breakup and development of a platform-to-basin carbonate shelf morphology began in the Late Triassic and extended through the Cretaceous. On the basis of this paleogeographic evolution, the regional geology of the Periadriatic region can be expressed in terms of three main Upper Triassic-Paleogene sedimentary sequences: (A), the platform sequence; (B), the platform to basin sequence; and (C), the basin sequence. These sequences developed during the initial rifting and subsequent passive-margin formation tectonic stages. The principal Triassic source basins and most of the surface hydrocarbon indications and economically important oil fields of the Periadriatic region are associated with sequence B areas. No major hydrocarbon accumulations can be directly attributed to the Jurassic-Cretaceous epioceanic and intraplatform source rock sequences. The third episode of source bed deposition characterizes the final active margin deformation stage and is represented by Upper Tertiary organic-rich terrigenous units, mostly gas-prone. These are essentially associated with turbiditic and flysch sequences of foredeep basins and have generated the greater part of the commercial biogenic gases of the Periadriatic region. 82 refs., 11 figs., 2 tabs.

• OSTI ID: 7120034
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 78:3; ISSN 0149-1423; ISSN AABUD2
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ADRIATIC SEA
ALBANIA
CENOZOIC ERA
COASTAL REGIONS
DEPOSITION
DEVELOPED COUNTRIES
DEVELOPING COUNTRIES
DISTRIBUTION
EASTERN EUROPE
EUROPE
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOLOGY
GREECE
HYDROCARBONS
ITALY
JURASSIC PERIOD
MEDITERRANEAN SEA
MESOZOIC ERA
MINERAL RESOURCES
OIL FIELDS
ORGANIC COMPOUNDS
PETROLEUM DEPOSITS
RESOURCES
SEAS
SEDIMENTARY BASINS
SICILY
SOURCE ROCKS
SURFACE WATERS
TECTONICS
TERTIARY PERIOD
TRIASSIC PERIOD
WESTERN EUROPE
YUGOSLAVIA