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Models for Holocene valley-fill sequences from high-resolution seismic facies of Galveston Bay

Conference ·
OSTI ID:6144025
; ;

Reconstructions of the northern Gulf of Mexico shelf for the Holocene have relied on the dating of isolated bathymetric banks. These banks, which are interpreted as former shorelines, provide snapshots of the shelf during periods of relative sea level stillstand. A more complete sedimentary record of the Holocene transgression is likely preserved in the incised valley-fill sequences. The first step in deciphering the record of Holocene valley-fill sequences is development of high-resolution seismic facies models based on modern environments. The modern incised valley-estuarine system of Galveston Bay has been seismically surveyed. Important environments include bayhead delta (Trinity River delta), tidal inlet, flood tidal delta (Bolivar Roads), and estuarine sediments (central bay). Additionally, fluvial sediments partially infill the entrenched Trinity River valley. Seismic facies interpretation was corroborated by information obtained from sediment cores.

OSTI ID:
6144025
Report Number(s):
CONF-880301-
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
AGE ESTIMATION
ALLUVIAL DEPOSITS
ATLANTIC OCEAN
CARIBBEAN SEA
CENOZOIC ERA
COASTAL REGIONS
COASTAL WATERS
CONTINENTAL MARGIN
CONTINENTAL SHELF
EXPLORATION
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC MODELS
GEOLOGY
GEOPHYSICAL SURVEYS
GULF OF MEXICO
MARINE SURVEYS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
QUATERNARY PERIOD
RESOURCES
RIVER DELTAS
SEAS
SEDIMENTS
SEISMIC SURVEYS
SURFACE WATERS
SURVEYS
TEXAS
USA