Geochronological models based on quantitative signal processing of chemical stratigraphic data

Conference · Wed Mar 01 00:00:00 EST 1989 · AAPG Bull.; (United States)

OSTI ID:5798370

Williams, D F; Trainor, D M; Lerche, I

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-
• Journal Information: AAPG Bull.; (United States), Vol. 73:3; Conference: AAPG annual convention with DPA/EMD Divisions and SEPM, San Antonio, TX, USA, 23-26 Apr 1989
• Country of Publication: United States
• Language: English

Related Subjects

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