Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"Thin beds"”.
-
Interpretation of Vibroseis reflections from within the Catoctin Formation of central Virginia
Large amplitude seismic reflections from within the Catoctin Formation of central Virginia are interpreted to originate from acoustically thin beds of interlayered metabasalts and metasediments. Large acoustic impedance contrasts exist between epidotised layers ( epidosites and volcanic breccia) …
-
ENHANCEMENT OF THE GEOLOGICAL FEATURES OF THE SCOTIAN BASIN BY THE APPLICATION OF SPECTRAL INVERSION, OFFSHORE NOVA SCOTIA
Reflections from the top and bottom of beds thinner than λ/4 cannot be distinguished from one another due to the limit of seismic resolution. It would be advantageous for geoscientists to image thin beds below resolution, especially those which are of reservoir quality. Frequency information …
-
Application of complex trace attributes to reflection seismic data near Charleston, South Carolina
… Attributes derived from synthetic seismograms of thin beds are used to interpret the patterns observed on the real data. Complex trace attributes derived from the original seismic trace complement the interpretation of a Mesozoic basin originally imaged by conventional data. The combination of …
-
The reprocessing and extended interpretation of seismic reflection data recorded over the Hayesville-Fries thrust sheet in southwestern North Carolina
… as duplexes created by thrust stacking of thin beds of Paleozoic shelf strata. The reprocessed data are used to determine a more unique depth domain geometry for one of the proposed duplexes. Reprocessed data are partially improved through an increase in both stacking velocity coverage and …
-
Thin-bed resolution from cepstrum analysis
… is developed for the purpose of resolving thin-beds. The method relies on the detection of periodic pulses of the cepstra of reflectivity functions, which are isolated by computing a sub-cepstrum and a sum-cepstrum, and highlighted with a discriminator, where the sub-cepstrum of the …
-
Joint inversion of density and resistivity logs for the improved petrophysical assessment of thinly-bedded clastic rock formations
… clastic hydrocarbon reservoir in the world are thinly bedded. Limited vertical resolution of logging tools, particularly deep resistivity tools, often causes ambiguity in log interpretation across interbedded rock formations. This situation routinely gives rise to inaccurate assessments of …
-
X-Ray Fluorescence Analysis Of The Bakken And Three Forks Formations Of The Williston Basin, North Dakota And Well Logging Applications
… geochemical composition and diagenetic changes within each stratigraphic interval.</p> <p>Results of x-ray fluorescence analysis of Williston Basin core included detailed well-logs showing the vertical distribution of lightweight, mid-range, and trace metal elements. The evidence collected in this …
-
Thin-bedded Facies Analysis of a Ferron Storm-dominated Delta Front and Prodelta: Cretaceous Ferron Sandstone, Utah
This study examines thin-bedded facies within shelf and prodelta deposits of the Cretaceous Ferron Notom Delta in central Utah. Thin beds may be the result of storms (tempestites), ignitive turbidity currents, or hyperpycnal flows. This study quantitatively evaluates the proportion of each facies …
-
The use of physical and chemical techniques in the identification of Tephera (volcanic ash) in the North Island, New Zealand
… volcanic source. In such areas the deposits are thin, and consequently more strongly weathered, as they are more or less continually involved in soil development processes. Under such conditions lithologic resemblance of a given ash to the same material closer to source may be lacking. The …