The Rise and Fall of Eustasy
Published:January 01, 1988
Christopher G.ST.C. Kendall, Ian Lerche, 1988. "The Rise and Fall of Eustasy", Sea-Level Changes: An Integrated Approach, Cheryl K. Wilgus, Bruce S. Hastings, Henry Posamentier, John Van Wagoner, Charles A. Ross, Christopher G. St. C. Kendall
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Techniques that can be used to determine the relative magnitude of eustatic excursions include the measurement of: (a) the amount of sedimentary onlap onto the continental margins; (b) the thickness of marine sedimentary cycles and the elevation and distance between indicators of old strandlines; (c) the perturbations on individual thermo-tectonic subsidence curves and stacked crustal subsidence curves; (d) the variations in deep-ocean oxygen isotopes found in sediments; and (e) the size of variables, such as rates of tectonic movement, sediment accumulation, and eustatic changes, used in graphical and numerical simulations of basin fill that “invert” the problem. To date, a combination of some or all of these methods can be used to construct relative (tectono/eustatic) sea-level curves; however, these are not unique solutions to absolute eustatic variations. Each method assumes some behavior for two of the three underlying processes (tectonic movement of the basement, sedimentary accumulation, and eustasy), and then determines the third process relative to the assumed model behavior of the other two. The sense of this result is confirmed by mathematical models which suggest that only the sum of tectonic basement subsidence and sea-level variations can be obtained.
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Sea-Level Changes: An Integrated Approach
Sea-Level Changes: An Integrated Approach - In October 1985, SEPM sponsored a four-day conference entitled ?Sea-Level Changes ? An Integrated Approach.? The purpose of the conference was to provide a forum for an interdisciplinary exchange of ideas on sea-level changes and to provide an opportunity for integrating various types of evidence in approaching unresolved issues. The conference was successful in bringing together scientists from industry, academia, and government, representing all of the major geosciences disciplines. Presentations of many new papers, plus significant releases of data that were previously held proprietary, provided fertile ground for discussion. This much-cited volume represents the best of the material presented at the conference. Includes the early ?Vail? chart.