A review of knowledge about fine-grained sediments: Mudstones, siltstones and shales
Arnold H. Bouma, Erik Scott, 2004. "A review of knowledge about fine-grained sediments: Mudstones, siltstones and shales", Depositional Processes and Reservoir Characteristics of Siltstones, Mudstones and Shales, Erik D. Scott, Arnold H. Bouma
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A symposium dedicated to fine-grained sediments (shales, mudstones, and siltstones), as seen from various directions, was organized by the authors along with William Bryant (Dept. of Oceanography, Texas A&M University) and held at the 2002 GCAGS Annual Meeting in Austin, Texas, on October 30, 2002. The term ‘shales’ is widely used and misused. Although over 60% of all sediment present on Earth fit the term shale, very few people work on these deposits. The few researchers active in this field vary widely in their interests and the type of journal they publish in. This results in earth scientists at large not being familiar with what is known to date. For that reason we decided to organize a symposium to start bringing these sediments more the to forefront.
A total of eleven presentations were given to an audience of over 30 persons. The symposium was well received and the idea for a follow-up was strongly supported. Every participant received a hard copy and a CD-ROM. In addition to the written papers the CD also contains a copy of all the additional illustrations used by the speakers. A copy of the CD can be obtained from the SEPM office (SEPM, 6128 East 38th Street, Suite 308, Tulsa, OK 74135-5814. Tel.: 918/610-3361 or 1-800-865-9765).
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Siltstones, mudstones and shales have been studied mainly with regard to general transportdeposition processes and clay mineralogy. A small group of investigators, with differing backgrounds, have worked on these fine-grained deposits. Recent studies on deepwater deposits from cores and outcrops indicate that the presence of finer-grained deposits greatly affect the fluid flow properties of deepwater reservoirs. Characteristics and rock properties of these deposits, which resulted from a variety of depositional processes, are just beginning to be understood.