Siliciclastic Sequence Stratigraphy In Well Logs Cores And Outcrops Pdf

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An Online Guide to Sequence Stratigraphy

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The geophysical characteristics of the carbonate-dominated Ordovician succession is described using wire-line logging data from exploration wells located within the Swedish part of the Baltic Basin, both offshore and from the island of Gotland. The 80—m-thick Ordovician succession is divided into five log stratigraphic units O a —O e , which are correlated throughout the study area. The newly established log stratigraphy is also linked to the existing seismic stratigraphic framework for the study area and exemplified with a selection of interpreted seismic type sections from Gotland and the south Baltic Sea. The presented characterization, division and correlation provide a basis for understanding the lateral and vertical variation of the petrophysical properties, which are essential in assessing the sealing capacity of the Ordovician succession, in conjunction with storage of CO 2 in the underlying Cambrian sandstone reservoir. Geophysical well logs have long been used for lithological characterization and sequence analysis. Traditionally, vertical well log patterns have provided a means to interpret the depositional energy and setting of siliciclastic depositional systems e.

Siliciclastic sequence stratigraphy in well logs, cores, and outcrops

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Application of sequence-stratigraphic analysis depends on the recognition of a hierarchy of stratal units including beds, bedsets, parasequences, parasequence sets, and sequences bounded by chronostratigraphically significant surfaces of erosion, nondeposition, or their correlative surfaces. This method of stratigraphic analysis contrasts with the use of transgressive and regressive cycles of strata for regional correlation of time and facies. Transgressive and regressive cycles have been used for regional correlation for at least 50 years. Recently, proponents of transgressive and regressive cycles, referred to as T-R units, for regional correlation have included Ryer , Busch and Rollins , Busch et al. Van Wagoner, R. Mitchum, K.

This book documents the stratal expressions of parasequences, parasequence sets, especially as components of systems tracts, and sequences in well logs, cores, and outcrops. The book illustrates well-log, core, and outcrop-recognition criteria for the stratal units from the lamina to the sequence, and demonstrates how the stratal units are used to achieve a high-resolution correlation of time and facies. Similar records in OSTI. GOV collections:. GOV Book: Siliciclastic sequence stratigraphy in well logs, cores, and outcrops. Title: Siliciclastic sequence stratigraphy in well logs, cores, and outcrops.

Siliciclastic sequence stratigraphy in well logs, cores, and outcrops

The following pages are focused on the use of well logs to build sequence s stratigraphic models of depositional system s. For this process well logs are primarily used to establish the grain size and the lithology of the penetrated sediment. The best sequence stratigraphic models of the sedimentary fill of basin s are provided by a combination of seismic data, well logs and cores and outcrop studies in conjunction with biostratigraphy.

John C Van Wagoner, R. M Mitchum, K. M Campion, V. Reference details. Open print view.

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2 Response
  1. Kathryn H.

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  2. Sighlozuco

    This online guide is primarily aimed at the application of sequence stratigraphy to outcrops.

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