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... Science Frontiers ONLINE No. 16: Summer 1981 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Paradox Of The Drowned Carbonate Platforms The biological processes that build carbonate reefs and platforms are so efficient that platform growth potential is easily several times the rate of average geological subsidence or sea-level rise. Therein lies the paradox: the geological record is full of drowned carbonate platforms, inferring that the sea has frequently engulfed them in episodes that must be termed catastrophic. Since the usual long-term geologic processes are clearly inadequate, Schlager proposes several more violent schemes; including massive submarine volcanism (Middle Cretaceous) and extraterrestrial deterioration of the oceanic biological environment (Lake Devonian). (Schlager, Wolfgang; "The Paradox of Drowned Reefs and Carbonate Platforms ... " Geological Society of America, Bulletin, 92:197, 1981.) Reference. See Category ETE2 in our Catalog: Carolina Bays, Mima Mounds, for more on drowned sections of crust. More on this book can be found here . From Science Frontiers #16, Summer 1981 . 1981-2000 William R. Corliss ...
Terms matched: 2 - Score: 497 - 15 May 2017 - URL: /sf016/sf016p11.htm
... Science Frontiers ONLINE No. 79: Jan-Feb 1992 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Deeply-buried life West-to-east profile of the Florida-Bahamas carbonate platform. Deep in the Gulf of Mexico, along the edge of the great carbonate platform that breaks the surface as Florida and the Bahamas, thrives a diverse community of animals that does not depend upon the sun for energy. Instead, they feast on carbohydrates provided by symbiotic bacteria. Since there are no ocean-floor vents spewing mutrients and hot water in the area, scientists have wondered where these bacteria obtain the methane and sulfides that nourish them. C.S . Martens and C.K . Paull, of the University of North Carolina, ... that bacteria living miles down within the carbonate platform generate the methane and sulfides as they consume organic matter buried long ago in the limestone. These excreted, energy rich gases and fluids seep upward and outward, sustaining biological communities along the edge of the platform. (Monastersky, R.; "Buried Rock, Bacteria Yield Deep-Sea Feast," Science News, 140:103, 1991.) Comment. (1 ) Looking far back in time, the sun was, of course, the energy source, because it helped create the buried organic matter. (2 ) However, there is always the possibility that the methane seeping out of the earth is abiogenic. See BLACK GOLD -- AGAIN under Geology . (3 ) How deeply into the crust has life penetrated? ...
Terms matched: 2 - Score: 218 - 15 May 2017 - URL: /sf079/sf079g09.htm
... Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology More Fell Fallout Astronomy Grooves of Phobos Still Unexplained A Martian Ice Age? The Moon's Magnetic Swirls Earth-moon Fission: A Slight Hint Biology Hooray, Another "dangerous" Book! Blebs and Ruffles How Do Cancers Attract A Supporting Cast Plants Manufacture Fake Insect Eggs Why Are There No Slave Ant Rebellions? Geology Paradox of the Drowned Carbonate Platforms Geophysics Earthquake Lights and Crustal Deformation Psychology Belief Systems and Health ...
Terms matched: 2 - Score: 194 - 15 May 2017 - URL: /sf016/index.htm
... oil might have been produced abiogenically. The surface and near-surface Athabasca oil sands in western Canada constitute a well-known deposit of almost unbelievable size. Geologists have long speculated about where such an immense quantity of biological matter could have originated. (Few dare to suggest nonbiological origins!) Now, we learn that below the Cretaceous Athabasca oil sands lies a 70,000 square kilometer "carbonate triangle" estimated to contain about 2 x 1011 cubic meters (about 6 cubic kilometers) of bitumen. This bitumen is closely related chemically to the oil sands above it. A common origin seems likely. (Hoffmann, C.F ., and Strausz, O.P .; "Bitumen Accumulation in Grosmont Platform Complex, Upper Devonian, Alberta, Canada," American Association of ... Geologists, Bulletin, 70:1113, 1986.) Comment. Many geologists believe that these incredible accumulations of organic matter migrated from some distant source to their present location. But just where was this prodigious wellspring of biological activity? Reference. Controversies regarding the origin of oil are covered in ESC13 in our catalog: Anomalies in Geology. This book is described here . From Science Frontiers #48, NOV-DEC 1986 . 1986-2000 William R. Corliss ...
Terms matched: 2 - Score: 167 - 15 May 2017 - URL: /sf048/sf048p14.htm