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Geochronological models based on quantitative signal processing of chemical stratigraphic data

Conference · · AAPG Bull.; (United States)
OSTI ID:5798370
; ;
Chemical stratigraphy is becoming an increasingly important tool in chronostratigraphic interpretations of exploration wells. Chemical stratigraphy data are well suited to modeling in the time and frequency domains with quantitative signal processing and data-dependent filtering techniques, such as power spectral analysis, autocorrelation, cross-correlation, cross power spectral analysis, phase-sensitive detection, and matched filters. Properly analyzed quantitatively, chemical stratigraphy data provide an ideal framework for stratigraphic correlation of thick sedimentary sections with a high degree of resolution, chronostratigraphic interpretations with a high degree of reliability, as well as mapping and timing of diagenetic trends and gradients. In this presentation, the authors use a combination of these techniques to compare several recently developed types of chemical stratigraphies. One type record is based on global changes in the stable isotopic composition of seawater. The other type records are based on composite stable isotope and geochemical records for Pliocene-Pleistocene exploration wells from the northwestern Gulf of Mexico. Coherency analysis was used to subtract the global portion of the signal from the Gulf sections due to freshwater discharge vents, paleotemperature changes, diagenesis, and hydrocarbon migration.
Research Organization:
Univ. of South Carolina, Columbia (USA)
OSTI ID:
5798370
Report Number(s):
CONF-890404-
Conference Information:
Journal Name: AAPG Bull.; (United States) Journal Volume: 73:3
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ATLANTIC OCEAN
CARIBBEAN SEA
CHEMISTRY
DIAGENESIS
EXPLORATION
EXPLORATORY WELLS
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGY
GULF OF MEXICO
ISOTOPE RATIO
MINERAL RESOURCES
ORIGIN
PETROLEUM DEPOSITS
RESOURCES
SEAS
STRATIGRAPHY
SURFACE WATERS
WELLS