Structural and depositional evolution of the East

Conference · Tue Dec 31 23:00:00 EST 1991 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:5905728

Reed, J J ^[1]; Fleischmann, K H ^[2]; Schamel, S ^[3]

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1. Savannah River Group, Westinghouse, Aiken, SC (United States)
2. Univ. of Texas, Dallas, TX (United States)
3. Univ. of South Carolina, Columbia, SC (United States)

The East Slovakian Basin, eastern Czechoslovakia, is a Neogene back-arc extensional and transtensional basin that formed during east and northeast shortening across the Outer Carpathian fold and thrust belt. Analysis of seismic, well log and outcrop data indicate three principal phases of structural evolution: (1) Early transtension, (2) Basin-wide downwarping, and, (3) Late compression and transpression. Initial clastic deposition occurred in the northwest corner of the present-day basin during Egerian/Eggenburgian time. Sedimentation accompanied increasing subsidence through the Karpatian, Badenian and into the Lower Sarmatian. Following Sarmatian time the rate of sedimentation slowed, and deposition was restricted to the southeastern part of the basin. Deposition occurred in a shallow marine to transitional environment, becoming more terrestrial through time. Early deposition occurred along an east to southeast axis with the depocenter axis rotating through time in a clockwise direction. The East Slovakian Basin has been heavily explored and is currently producing predominantly dry gas from five different fields. Wet gas is produced only from the Ptruksa anticline, a phase one structure while dry gas is produced from phase three structural traps. This implies that late-forming hydrocarbon traps combined with high heat flow may preclude the entrapment of liquid phase hydrocarbons.

• OSTI ID: 5905728
• Report Number(s): CONF-921058--
• Journal Information: Geological Society of America, Abstracts with Programs; (United States), Journal Name: Geological Society of America, Abstracts with Programs; (United States) Vol. 24:7; ISSN GAAPBC; ISSN 0016-7592
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
CZECHOSLOVAKIA
DEFORMATION
DEPOSITION
DEVELOPING COUNTRIES
EASTERN EUROPE
ENERGY SOURCES
EUROPE
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
GEOPHYSICAL SURVEYS
MINERAL RESOURCES
NATURAL GAS
NATURAL GAS DEPOSITS
PRODUCTION
RESOURCES
SEISMIC SURVEYS
SURVEYS
WELL LOGGING