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... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earth's Shifting Crust Our title is identical to that of a book published by C.P . Hapgood in 1958. He also wrote The Path of the Pole (1970). Several other authors have also proposed that sudden slippages of the earth's crust caused wild climate fluctuations in the past with devastating biological consequences -- in particular, all those quickfrozen mammoths in Siberia. These poleshift scenarios coming from thinkers swimming far out of the scientific mainstream have been studiously ignored in a "new" and well-publicized pole-shift theory recently appearing in Science. The "new" theory relates to an old (534- ... Science Frontiers ONLINE No. 113: Sep-Oct 1997 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Earth's Shifting Crust Our title is identical to that of a book published by C.P . Hapgood in 1958. He also wrote The Path of the Pole (1970). Several other authors have also proposed that sudden slippages of the earth's crust caused wild climate fluctuations in the past with devastating biological consequences -- in particular, all those quickfrozen mammoths in Siberia. These poleshift scenarios coming from thinkers swimming far out of the scientific mainstream have been studiously ignored in a "new" and well-publicized pole-shift theory recently appearing in Science. The "new" theory relates to an old (534- ...
Terms matched: 2 - Score: 335 - 15 May 2017 - URL: /sf113/sf113p07.htm
... Science Frontiers ONLINE No. 128: MAR-APR 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Lurch of Death Two geophysicists, W. Sager and A. Koppers, have plotted 27 ancient pole positions dated between 120 and 30 million years ago. Using rock samples brought up from submerged Pacific sea-mounts, they find that the earth's magnetic poles shifted 15-20-deg about 84 million years ago. The north magnetic pole was not slowly drifting, it was lurching. It took just a couple million years to shift 700 miles or more; that's more than ten times the rate of continental drift. The earth from afar must have seemed to be a disturbed top---on a geological ... scale, of course! What could have perturbed the earth? One suggestion blames a sudden shifting of the planet's mass distribution, some sort of subterranean indigestion, like a subducted ocean plate suddenly plunging through into the lower mantle. (Kerr, Richard A.; "Did the Dinosaurs Live on a Topsy-Turvy Earth?" Science, 287:406, 2000.) The biological consequences of such a sudden tilting could have been severe. The event -- known as rapid true polar wander -- may have been accompanied by worldwide volcanic upheavals and reorganization of tectonic plates that would have played havoc with anything living in the Late Cretaceous period, 65 million to 99 million years ago. Although the notion that an asteroid was the immediate cause of dinosaur extinction about 65 million ...
Terms matched: 2 - Score: 234 - 15 May 2017 - URL: /sf128/sf128p08.htm
... crust still more. Magnetic measurements of lunar rocks tend to confirm that the lunar crust did indeed shift by large angles -- several times. (Anonymous; "Did the Moon Have Moonlets?" Science Digest, 92:20, January 1984.) Comment. Such events could also have happened on earth, which would account for tropical-zone fossils being found at the present-day poles. From Science Frontiers #33, MAY-JUN 1984 . 1984-2000 William R. Corliss ...
Terms matched: 2 - Score: 184 - 15 May 2017 - URL: /sf033/sf033p05.htm
... during lengthy periods without magnetic reversals (' quiet periods'). My assembly of published work indicates a remote connection between quiet periods and anoxic events and suggests its form: Magnetic quiet periods coincide with fast seafloor spreading. During these periods, buoyant spreading ridges displace seawater into broad shelves, thus decreasing earth's albedo and causing global warming. Temperature gradients, and thus density gradients, from pole to equator decrease in surface waters, and the deep ocean currents of oxygenated polar waters wane. Oxygen minimum zones intensify and widen; anoxic conditions throughout entire basins are indicated by black shales deposited in the deep sea. These relations thus suggest that the earth's interior processes and its climates are related and their status recorded by both magnetic polarity and anoxic event chronologies of the earth." ... Science Frontiers ONLINE No. 32: Mar-Apr 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects When The Earth Shifted Gears No one really knows just how the terrestrial magnetic field is generated or why it has reversed its direction so frequently in past geological time. Per-haps there is a clue in the following correlation: "The Mesozoic-Cenozoic histories of reversals in the earth's magnetic field and of periods of widespread anoxia in the ocean basins show a remarkable correlation; periods of black-shale deposition (' anoxic events') occur during lengthy periods without magnetic reversals (' quiet periods'). My assembly of published work indicates a remote connection between quiet periods and anoxic events and suggests its form: Magnetic quiet ...
Terms matched: 2 - Score: 176 - 15 May 2017 - URL: /sf032/sf032p12.htm
... No. 63: May-Jun 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Hex On Saturn "By piecing together pictures of Saturn taken by the Voyager-2 spacecraft, David A. Godfrey (National Optical Astronomy Observatories) has discovered an unusual feature in the planet's atmosphere. His mosaics reveal a hexagon centered on the north pole. Since neither probe flew directly over the pole, the complete scene has to be created by 'stretching' a series of photographs taken from the side as Saturn rotated, then fitting them into a polar projection." The straight sides of the hexagon are each about 13,800 kilometers long. The entire structure rotates with a period of 10h 39m 24s, the same period as that ... the planet's radio emissions, which is assumed to be equal to the period of rotation of Saturn's interior. The hexagonal feature does not shift in longitude like the other clouds in the visible atmosphere. The pattern's origin is a matter of much speculation. Most astronomers seem to favor some sort of standing-wave pattern in the atmosphere; but the hexagon might be a novel sort of aurora. More extreme speculation has Saturn's radio emissions emanating from the hexagon (something we can see and which has the right rotation period) rather than from the planet's interior (something we cannot see). (Anonymous; "A Hex on Saturn," Sky and Telescope, 77:246, 1989.) Comment. Note the similarities between the hexagon ...
Terms matched: 2 - Score: 170 - 15 May 2017 - URL: /sf063/sf063a04.htm
... Science Frontiers ONLINE No. 87: May-Jun 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Late Survival Of Mammoths Many a sensational article has been written about how the Siberian mammoth population was deep-frozen by a sudden climate change due to a shift in the earth's poles or some other catastrophic event circa 10,000 years ago. But now, Russian scientist A. Sher and two colleagues claim that a dwarf version of the wooly mammoth survived on Wrangel Island, 120 miles off the Siberian coast until about 3,700 years ago. The Wrangel Island dwarf mammoths stood only about 2 meters high and weighed 2 tons. The British mammoth expert, A. Lister, said he was not really surprised at this discovery ... Science Frontiers ONLINE No. 87: May-Jun 1993 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Late Survival Of Mammoths Many a sensational article has been written about how the Siberian mammoth population was deep-frozen by a sudden climate change due to a shift in the earth's poles or some other catastrophic event circa 10,000 years ago. But now, Russian scientist A. Sher and two colleagues claim that a dwarf version of the wooly mammoth survived on Wrangel Island, 120 miles off the Siberian coast until about 3,700 years ago. The Wrangel Island dwarf mammoths stood only about 2 meters high and weighed 2 tons. The British mammoth expert, A. Lister, said he was not really surprised at this discovery ...
Terms matched: 2 - Score: 166 - 15 May 2017 - URL: /sf087/sf087b18.htm
... The kinetic energy of the faster-spinning inner core might actually create the geomagnetic field. What happens when the geomagnetic field reverses, as it has often done according to the magnetostratigraphic record? Does the earth's motor go into reverse? If the inner core can slip relative to the crust and mantle, why cannot the crust-plus-mantle slip, too -- perhaps catastrophically? Pole-shift proponents will like this idea! *Title idea from A. Rand's Atlas Shrugged . Of course, Rand's hero was talking about a different kind of motor. From Science Frontiers #108, NOV-DEC 1996 . 1996-2000 William R. Corliss ...
Terms matched: 2 - Score: 166 - 15 May 2017 - URL: /sf108/sf108p09.htm
