Structural evolution and petroleum productivity of the Baltic basin

Conference · Thu Aug 01 00:00:00 EDT 1991 · Geobyte; (United States)

OSTI ID:5740475

Ulmishek, G F ^[1]

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1. Geological Survey, Denver, CO (United States)

The Baltic basin is an oval depression located in the western part of the Russian craton; it occupies the eastern Baltic Sea and adjacent onshore areas. The basin contains more than 5,000 m of sedimentary rocks ranging from latest Proterozoic to Tertiary in age. These rocks consist of four tectonostratigraphic sequences deposited during major tectonic episodes of basin evolution. Principal unconformities separate the sequences. The basin is underlain by a rift probably filled with Upper Proterozoic rocks. Vendian and Lower Cambrian rocks (Baikalian sequence) form two northeast-trending depressions. The principal stage of the basin development was during deposition of a thick Middle Cambrian-Lower Devonian (Caledonian) sequence. This stage was terminated by the most intense deformations in the basin history. The Middle Devonian-Carboniferous (Hercynian) and Permian-Tertiary (Kimmerian-Alpine) tectonic and depositional cycles only slightly modified the basin geometry and left intact the main structural framework of underlying rocks. The petroleum productivity of the basin is related to the Caledonian tectonostratigraphic sequence that contains both source rocks and reservoirs. However, maturation of source rocks, migration of oil, and formation of fields took place mostly during deposition of the Hercynian sequence.

• OSTI ID: 5740475
• Report Number(s): CONF-910978-; CODEN: GEOBE
• Journal Information: Geobyte; (United States), Vol. 75:8; Conference: International conference and exhibition of the American Association of Petroleum Geologists (AAPG): the way ahead-hydrocarbons for the 1990s, London (United Kingdom), 29 Sep - 3 Oct 1991; ISSN 0885-6362
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
BALTIC SEA
SEDIMENTARY BASINS
PETROLEUM GEOLOGY
STRATIGRAPHY
USSR
DEPOSITION
GEOLOGIC HISTORY
OFFSHORE SITES
ONSHORE SITES
RESERVOIR ROCK
SOURCE ROCKS
TECTONICS
ASIA
DEVELOPED COUNTRIES
EUROPE
GEOLOGIC STRUCTURES
GEOLOGY
SEAS
SURFACE WATERS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration