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A primary goal of sedimentary geologists is to interpret past tectonic, climatic, and eustatic conditions from the stratigraphic record. It is typically assumed that deposits accumulated over timescales of 104-106 years dominantly record basin boundary conditions such as subsidence or sediment and water supply rates. Consequently stratigraphic changes in alluvial-basin fills are routinely interpreted as the result of past tectonic movements or changes in climate or sea level. Recent physical and numerical models have shown that sedimentary systems can exhibit self-organization on basin-filling time scales, suggesting that structured stratigraphic patterns can form spontaneously rather than as the result of changing boundary conditions. The Ferris Formation (Upper Cretaceous/Paleogene, Hanna Basin, Wyoming) exhibits stratigraphic organization where clusters of closely-spaced channel deposits are separated from other clusters by intervals dominated by overbank material. In order to determine the potential for autogenic self-organization in this ancient deposit, spatial-point-process statistics are used to quantitatively compare the stratigraphic pattern of the Ferris Formation to stratigraphy from a physical experiment designed to highlight intrinsic variability in alluvial depositional systems. The spatial patterns of auxiliary variables such as maximum grain size, paleoflow depth, and paleocurrent direction are examined throughout the Ferris Formation in order to determine the factors that controlled channel avulsion and deposition within the basin. The Ferris Formation is shown to have similar stratigraphic characteristics to the experimental deposit suggesting that autogenic organization of channel avulsions over basin-filling timescales may have played a role in constructing the clustered stratigraphic pattern observed in the unit. Additionally the study area lacks strong trends sand-body properties through the stratigraphic succession and between cluster groups. Consequently there is no indication that the stratigraphic pattern observed in the Ferris Formation was driven by systematic changes in climate, tectonics, or sea level.
A study of 170 kinds of plants and the strata that yield them, showing how they apply in the delimination of the Paleocene series.
Reservoir Characterization is a collection of papers presented at the Reservoir Characterization Technical Conference, held at the Westin Hotel-Galleria in Dallas on April 29-May 1, 1985. Conference held April 29-May 1, 1985, at the Westin Hotel—Galleria in Dallas. The conference was sponsored by the National Institute for Petroleum and Energy Research, Bartlesville, Oklahoma. Reservoir characterization is a process for quantitatively assigning reservoir properties, recognizing geologic information and uncertainties in spatial variability. This book contains 19 chapters, and begins with the geological characterization of sandstone reservoir, followed by the geological prediction of shale distribution within the Prudhoe Bay field. The subsequent chapters are devoted to determination of reservoir properties, such as porosity, mineral occurrence, and permeability variation estimation. The discussion then shifts to the utility of a Bayesian-type formalism to delineate qualitative ""soft"" information and expert interpretation of reservoir description data. This topic is followed by papers concerning reservoir simulation, parameter assignment, and method of calculation of wetting phase relative permeability. This text also deals with the role of discontinuous vertical flow barriers in reservoir engineering. The last chapters focus on the effect of reservoir heterogeneity on oil reservoir. Petroleum engineers, scientists, and researchers will find this book of great value.
Ghosts and other supernatural phenomena are widely represented throughout modern culture. They can be found in any number of entertainment, commercial, and other contexts, but popular media or commodified representations of ghosts can be quite different from the beliefs people hold about them, based on tradition or direct experience. Personal belief and cultural tradition on the one hand, and popular and commercial representation on the other, nevertheless continually feed each other. They frequently share space in how people think about the supernatural. In Haunting Experiences, three well-known folklorists seek to broaden the discussion of ghost lore by examining it from a variety of angles in various modern contexts. Diane E. Goldstein, Sylvia Ann Grider, and Jeannie Banks Thomas take ghosts seriously, as they draw on contemporary scholarship that emphasizes both the basis of belief in experience (rather than mere fantasy) and the usefulness of ghost stories. They look closely at the narrative role of such lore in matters such as socialization and gender. And they unravel the complex mix of mass media, commodification, and popular culture that today puts old spirits into new contexts.
Here, more than 20 experts from leading research institutes around the world present the entire scope of this rapidly developing field. In so doing, they cover a wide range of topics, including the characterization and investigation of structural, dielectric and piezoelectric properties of ceramic materials, a well as phase transitions, electrical and optical properties and microscopic investigations. Another feature is a complete profile of the properties of polar oxides -- from their proof to their latest applications. Throughout, the authors review, discuss and assess the material properties with regard to new and advanced characterization and imaging techniques. For physicists, physicochemists, semiconductor and solid state physicists, materials scientists, and students of chemistry and physics.
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Geologists, engineers, and petrophysicists concerned with hydrocarbon production from naturally fractured reservoirs will find this book a valuable tool for obtaining pertinent rock data to evaluate reserves and optimize well location and performance. Nelson emphasizes geological, petrophysical, and rock mechanics to complement other studies of the subject that use well logging and classical engineering approaches. This well organized, updated edition contains a wealth of field and laboratory data, case histories, and practical advice. A great how-to-guide for anyone working with fractured or highly anisotropic reservoirs Provides real-life illustrations through case histories and field and laboratory data
This book is intended to complement the author's 1996 book "The geology of fluvial deposits", not to replace it. The book summarizes methods of mapping and interpretation of fluvial depositional systems, with a detailed treatment of the tectonic, climatic and eustatic controls on fluvial depositional processes. It focuses on the preserved, ancient depositional record and emphasizes large-scale (basin-scale) depositional processes. Tectonic and climatic controls of fluvial sedimentation and the effects of base-level change on sequence architecture are discussed. Profusely illustrated and with an extensive reference to the recent literature, this book will be welcomed by the student and professional geologist alike.