The first edition appeared fourteen years ago. Since then there have been significant advances in our science that warrant an updating and revision of Sand and Sandstone. The main framework of the first edition has been retained so that the reader can begin with the mineralogy and textural properties of sands and sandstones, progress through their organization and classification and their study as a body of rock, to consideration of their origin-prove nance, transportation, deposition, and lithification-and finally to their place in the stratigraphic column and the basin. The last decade has seen the rise of facies analysis based on a closer look at the stratigraphic record and the recognition of characteristic bed ding sequences that are the signatures of some geologic process-such as a prograding shallow-water delta or the migration of a point bar on an alluvial floodplain. The environment of sand deposition is more closely determined by its place in such depositional systems than by criteria based on textural characteristics-the "fingerprint" approach. Our revi sion reflects this change in thinking. As in the geological sciences as a whole, the concept of plate tectonics has required a rethinking of our older ideas about the origin and accumu lation of sediments-especially the nature of the sedimentary basins.
We wrote Sedimentology of Shale primarily because we lacked a handy, reasonably comprehensive source of information and ideas about shales for students in our sedimentology program. It was also our feeling that the time for shales to receive more study had finally arrived. Sedimentology of Shale also seems very timely because today more sedimentologists are interested in shales. Certainly in the last five years the pace of shale research has no ticeably quickened because the role of shales as important sources of oil, gas, heavy metals and as a long understudied part of the earth's geologic his tory has been recognized. Noteworthy developments include the elucida tion of the importance of trace fossils in shales, the discovery of thick sequences of overpressured shales in regions such as the Gulf Coast (which have important implications for hydrocarbon migration and faulting), the ex tension of the principles of metamorphic facies to the realm of low tempera ture diagenesis by study of the organic matter in shales, and shales as ul timate sources for mineral deposits. Accordingly, we decided it was timely to write a book on shales. In one respect, however, ours is an unusual book. Most books in geology are produced after one or two decades of progress have been made in a field and attempt to summarize and evaluate that progress.
Clear writing and analysis of the broad spectrum of processes that produce shale are coupled with well-captioned 150 illustrations, 40 tables, boxed technical details, glossary and appendices. Recounts the step-by-step evolution and stages of shal, enabling readers to master the basics and to dig yet deeper into their origin, practical implications and relationship to earth history. Background information appears in appendices (Clay Mineralogy, Isotopes, Petrology, etc.); technicial details in high-lighted boxes, and definitions of 300+ terms in the Glossary.
This is a book for beginners. Not geological beginners, because an introductory course in paleontology and some knowledge of the petrographic microscope is assumed, but for beginners in the study of the petrography of fossil constituents in sedimentary rocks. Fossils are studied for various reasons: 1) to provide chron ologic (time) frameworks, 2) to delineate rock units and ancient environments, or 3) to understand the past development (evolu tion) of living plants and animals. All of these uses may be at tained through petrographic studies of thin sections of fossils embedded in sedimentary rocks. Some knowledge of the appear ance of fossils in thin section is also fundamental for general stratigraphic studies, biofacies analyses, and is even useful in studying some metamorphic rocks. Commonly, fossils are essen tial for the delineation of carbonate rock types (facies or bio facies). We have written this book for sedimentary petrologists and stratigraphers, who routinely encounter fossils as part of their studies but who are not specialists in paleontology, and for students who are seeking a brief review and an introduction to the literature of the petrography of fossiliferous sedimentary rocks. Although experienced paleontologists may be appalled by the many generalized statements on size, shape, and principal fossil characters recited herein, we counter that we have had some success in introducing non-paleontologically oriented geologists to the use and identification of fossil constituents without using excessive paleontological terminology and detailed systematics.
This book introduces a brand new field of scientific research based upon analysis of artifacts retrieved from crashed and damaged UFOs that have come down in Russia and America. For the first time, it reveals the scientific principles behind UFO propulsion dynamics, and shows that these principles are known and recognized by today’s physicists. Potter’s analyses of these UFO mechanisms are substantiated with references to a broad array of over 300 research papers published in scientific journals! Potter correlates many of the phenomena observed firsthand by close encounter witnesses and abductees and pinpoints the common themes reported, categorizing them according to known physical principles. He produces a comprehensive orchestration of energy dynamics used inside and around UFOs. His precise and lavish illustrations allow the reader to enter directly into the realm of the advanced technological engineer and to understand, quite straightforwardly, the aliens’ methods of energy manipulation: their methods of electrical power generation; how they purposely designed their craft to employ the kinds of energy dynamics that are exclusive to space (discoverable in our astrophysics) in order that their craft may generate both attractive and repulsive gravitational forces; their control over the mass-density matrix surrounding their craft enabling them to alter their physical dimensions and even manufacture their own frame of reference in respect to time.
This text is the second edition of Anatomy and Physiology in Speech and Hearing, first published in 1984 by College Hill Press. It serves as a general introductory text, primarily for undergraduates. Its goal is to bridge the gap between the anatomy and physiology and the clinical practice of speech. It concentrates on fundamentals and thus may also be used as a reference for therapists in the public school setting. This edition includes expanded clinical considerations and references, with the addition of a self-examination section at the end of each chapter.
In Black Americans and Organized Labor, Paul D. Moreno offers a bold reinterpretation of the role of race and racial discrimination in the American labor movement. Moreno applies insights of the law-and-economics movement to formulate a powerfully compelling labor-race theorem of elegant simplicity: White unionists found that race was a convenient basis on which to do what unions do -- control the labor supply. Not racism pure and simple but "the economics of discrimination" explains historic black absence and under-representation in unions. Moreno's sweeping reexamination stretches from the antebellum period to the present, integrating principal figures such as Frederick Douglass and Samuel Gompers, Isaac Myers and Booker T. Washington, and W. E. B. Du Bois and A. Philip Randolph. He traces changing attitudes and practices during the simultaneous black migration to the North and consolidation of organized labor's power, through the confusing and conflicted post-World War II period, during the course of the civil rights movement, and into the era of affirmative action. Maneuvering across a wide span of time and a broad array of issues, Moreno brings remarkable clarity to the question of the importance of race in unions. He impressively weaves together labor, policy, and African American history into a cogent, persuasive revisionist study that cannot be ignored.
This will help us customize your experience to showcase the most relevant content to your age group
Please select from below
Login
Not registered?
Sign up
Already registered?
Success – Your message will goes here
We'd love to hear from you!
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.