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... Science Frontiers ONLINE No. 121: Jan-Feb 1999 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects An Arkansas Tsunami Deposit?Yes, Arkansas is hundreds of kilometers from any ocean. Could a tsunami ever reach Little Rock, or even 120 kilometers northeast of Little Rock where, atop a 76-meter (250-foot) hill are perched giant blocks of sandstone. These blocks range up to 7.6 meters (25 feet) in size and weigh many tons ... No native rocks in the area match them. The Ice Age glaciers never reached Arkansas, so they can't be glacial erratics. Where did they come from? One clue is the presence of glauconite in the sandstone. Glauconite is common in marine rocks, so suspicion points toward the Gulf of Mexico. Geologist G. Patterson, University of Memphis, thinks that the huge chunks of sandstone came from coastal Louisiana and were carried some 650 kilometers (400 miles) inland by the giant tsunami raised by the asteroid or comet ... smashed into the Yucatan to close out the Cretaceous. That, of course, was when the dinosaurs were forced into oblivion. But could the tsunami really have transported such huge rocks 650 kilometers? (Falk, Dan; "Washed Up," New Scientist, p. 26, November 7, 1998.) Comments. Tsunami debris from the end-Cretaceous impact has been found along the Gulf Coast and on some Caribbean islands. In northeastern Mexico, geologists have found a debris layer 3-meters thick that is also ...
Terms matched: 3 - Score: 715 - 15 May 2017 - URL: /sf121/sf121p10.htm
... Science Frontiers ONLINE No. 51: May-Jun 1987 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Larger Sun During The Maunder Minimum Europe's so-called "Little Ice Age" (1645-1715) coincided with the Maunder Minimum -- a period during which sunspots were exceedingly rare. How was the sun different during the Maunder Minimum? This subject of solar variability (in both diameter and period of rotation) has been long debated. Some early measurements ... solar diameter, begun at Greenwich in 1830, seemed to some to show a steadily shrinking sun, but others found cyclic patterns. E. Ribes et al have just presented some data on solar diameter actually taken during the Maunder Minimum. "By analysing a unique 53-year record of regular observations of the solar diameter and sunspot positions during the seventeenth century, we have shown for the first time that the angular diameter was larger and rotation slower during the Maunder Minimum." A larger sun might be cooler, providing less ... , thus accounting for climate changes. (Ribes, E., et al; "Evidence for a Larger Sun with a Slower Rotation during the Seventeenth Century," Nature, 326: 52, 1987.) Comment. Just why the sun expands and contracts over a period measured in hundreds of years is a major astro physical conundrum. Variation in solar diameter, 1860-1940. Arrows indicate sunspot maxima. (From ASO-X6 in The Sun and Solar System Debris). From Science Frontiers #51, MAY ...
Terms matched: 3 - Score: 678 - 15 May 2017 - URL: /sf051/sf051a05.htm
... Oct 2002 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Ancient stone road leads to mountain laced with jade The Planet of the Apes: It's archaeology Ice-age faces on cave floors Astronomy From amusing little volcanoes to giant red devils Strange and Stranger astronomy Biology Dark Life A plague on theories Too close to be so far People who are not entirely themselves Geology Three inner-Earth heresies Geophysics Train, whistle, slowdown, bloop A bad assumption may obscure dark matter ... Science Frontiers ONLINE No. 143: Sep-Oct 2002 Other pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Ancient stone road leads to mountain laced with jade The Planet of the Apes: It's archaeology Ice-age faces on cave floors Astronomy From amusing little volcanoes to giant red devils Strange and Stranger astronomy Biology Dark Life A plague on theories Too close to be so far People who are not entirely themselves Geology Three inner-Earth heresies Geophysics Train, whistle, ... , bloop A bad assumption may obscure dark matter Psychology Contagious, collective laughter Physics Wordless memeories Chemistry Mechanical chemistry ...
Terms matched: 3 - Score: 678 - 15 May 2017 - URL: /sf143/index.htm
... -old enigma of missing solar neutrinos. A shrinking diameter implies a cooling sun, while the paucity of neutrinos suggests that the sun's nuclear fires are at a low ebb. Something similar may have happened in the 17th. Century when the so-called Little Ice Age prevailed. (Anonymous; "Scientists Shrink from Smaller Sun," New Scientist, 82:982, 1979.) From Science Frontiers #8 , Fall 1979 . 1979-2000 William R. Corliss ...
Terms matched: 3 - Score: 586 - 15 May 2017 - URL: /sf008/sf008p03.htm
... , 7x10 format. Anomalies in Geology: Physical, Chemical, Biological; A Catalog of Geological Anomalies Sorry: Out of Print. No longer available. Journey here into ice caves, exhume Siberian mammoths, see animals perish in gas-filled valleys -- a little media hype is justified here. But more serious questions involve the origins of oil, coal, and natural gas. Typical subjects covered: Biological extinction events * Musical sands, ringing rocks * Anomalies of oil's origin * Ice caves, frozen wells * ... Scientist, Nature, Scientific American, etc Archaeology Astronomy Biology Geology Geophysics Mathematics Psychology Physics Guides available Biology Catalogs Biology Handbook Archeology Handbook Geophysics Catalogs Geological Catalogs Astronomy Catalogs Astronomy Handbook Science Frontiers Sourcebooks Ordering details Omni Edge Science Winner December 1996 Publishing History 2007: Dark Days, Ice falls, Firestorms and Related Weather Anomalies (Geophysics) 2006: Archeological Anomalies: Graphic Artifacts I 2003: Archeological Anomalies: Small Artifacts 2003: Scientific Anomalies and other Provocative Phenomena 2001: Remarkable Luminous Phenomena in Nature 2001: Ancient Structures (Archeology) 1999: ... Sorry: Out of Print. No longer available. Bone artifacts: Anomalous early bone tools; Bone artifacts of uncertain affiliation; Pre-Clovis bone tools in the New World; Anomalous association of animal bones with ancient human presence; Artificially worked animal bones of great age; Grooved, punctured, Pounded human bones; Evidence of ancient skull surgery (trepanation); Scratched and smashed bones: The cannibalism signature; Exotic mummies Cloth artifacts: Viking cloth in the High North American Arctic; Diffusion of dyed, patterned textile technology; ...
Terms matched: 3 - Score: 553 - 10 Oct 2021 - URL: /sourcebk.htm
... . Then they propose a physical mechanism for geomagnetic reversals: "The impact of a large extraterrestrial object on the Earth can produce a geomagnetic reversal through the following mechanism: dust from the impact crater and soot from fires trigger a climate change and the beginning of a little ice age. The redistribution of water near the equator to ice at high latitudes alters the rotation rate of the crust and mantle of the Earth. If the sea-level change is sufficiently large ( 10 meters) and rapid (in a few hundred years ... , then the velocity shear in the liquid core disrupts the convective cells that drive the dynamo. The new convective cells that subsequently form distort and tangle the previous field, reducing the dipole component near to zero while increasing the energy in multipole components. Eventually a dipole is rebuilt by dynamo action, and the event is seen either as a geomagnetic reversal or as an excursion." (Muller, Richard A., and Morris, Donald E.; "Geomagnetic Reversals from Impacts on the Earth," Geophysical Research Letters, ... :1177, 1986.) Comment. That the earth's field is generated by internal dynamo action is still a theory, although a widely accepted one. From Science Frontiers #49, JAN-FEB 1987 . 1987-2000 William R. Corliss ...
Terms matched: 3 - Score: 519 - 15 May 2017 - URL: /sf049/sf049p18.htm
... and thus the power available to the core dynamo. Gubbins found that these externally caused pressure changes were too small to explain the polarity changes. However, the parameters involved are not well-known, and external triggers cannot yet be written off. Summarizing, very little progress has been made in explaining how the earth's field is generated and how polarity changes are linked to other geophysical parameters. (Jacobs, J.A .; "What Triggers Reversals of the Earth's Magnetic Field?" Nature, 309 ... Jul-Aug 1984 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Behind magnetic flip-flops The earth's magnetic field frequently reverses its polarity. Such flips can of-ten be correlated with climate changes, global ice volumes, sea-floor spreading rates, and deposition of black shales, tektite falls, biological extinctions, etc. The frustrating thing is the lack of clear-cut cause and effect; that is, how these phenomena are linked physically to the geomagnetic field ... progressive growth of the inner core. In concept, the heat lost at the core-mantle boundary might be linked to climate changes and sea-floor spreading. Taking a different tack, D. Gubbins has investigated the possibility that field reversals are triggered by ice ages and meteorite impacts (tektite falls). The physical mechanism here would be the increase in pressure upon the core, which affects the rate of freezing in the outer core, and thus the power available to the core dynamo. Gubbins found that these externally caused ...
Terms matched: 3 - Score: 519 - 15 May 2017 - URL: /sf034/sf034p15.htm
... earliest terrestrial life found in the rocks. These finds highlight the old question: Did meteorites seed life on earth? The much-publicized "lunar" meteorite, supposedly blasted out of the moon's crust by asteroid impact, thence falling to earth, shows little evidence of mechanical shock. If this meteorite, with a composition so similar to the Apollo samples is not from the moon, where did it come from? (Marvin, Ursula B.; "Extraterrestrials Have Landed on Antarctica," New Scientist, 97 ... pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The solar-system dust bin For hundreds of thousands of years, miscellaneous rocky debris swirling around the sun has been falling upon the icy wastes of Antarctica. The motion of Antarctica's ice sheet carries these meteorites conveyor-belt fashion out towards the encircling seas. But where Antarctic mountains get in the way, the rocky cargo tends to get concentrated. Several thousand meteorites have already been picked up at these favored spots. In just a few brief ... of searching, these massive finds have posed unexpected questions. Here is a sampling. The terrestrial ages (times since arrival on earth) measure between 1,000 and 700,000 years, implying that the Antarctic ice sheet may be at least 700,000 years old. This is unfortunate for several proposed scenarios of recent catastrophism, which envision an iceless Antarctica. At least 20 amino acids appear in the more than 40 carbonaceous chondrites picked up with sterile equipment. These meteorites are dated as 4.5 billion years old ...
Terms matched: 3 - Score: 514 - 15 May 2017 - URL: /sf027/sf027p08.htm
... Ears and So-Called Gill-Slits BHA41 Nostril Orientation and Musculature BHA42 Differences and Similarities between Human and Primate Teeth BHA43 Racial Dental Differences BHA44 Historical Shrinkage of Human Teeth BHA45 Extra Dentitions BHA46 Human Horns BHA47 Unusual, Inherited Characteristics of Feet BHA48 Progressive Loss of the Little Toe BHA49 Webbed Hands and Feet BHA50 Alleged Primitive Character of Human Hands and Feet BHA51 Large Female Breasts and Buttocks BHA52 The Unusual Location of Human Breasts BHA53 Human Tails BHA54 Concordance of Human Embyro Growth and Evolutionary Developments BHA55 Anomalous Human Odors Babies Born with Full Sets ... Unusual Swimming Capabilities of Terrestrial Mammals BMT7 Remarkable Diving Capabilities of Distantly Related Mammals BMT8 Unusual Vocalizations in Mammals BMT9 Seismic Communication BMT10 Mammals That Imitate Human Words BMT11 Tool Use and Manufacture BMT12 Mammalian Engineering Works Chimps Signal with Vegetable "Notes" Whales' Detection of Holes in Ice Identification and Consumption of Medicinal Foods Dog Detects Onset of Human Seizures Dog Detects Human Cancers BMU UNRECOGNIZED MAMMALS BMU1 MacFarlane's Bear: A Yellow Giant BMU2 The Onza: An Unrecognized North American Cat? BMU3 De Loy's Ape or Mono Grande BMU4 The ... : A Giant Armadillo? BMU5 The King Cheetah: Evolution in Progress? BMU6 The Spotted Lion or Marozi BMU7 The Mngwa or Nunda BMU8 The Nandi Bear: Bear-Like But Not a Bear BMU9 Bunyips and Waitorekes: Errant Seals, Sea Lions, and/or Otters? (BRU] BMU10 Steller's Sea Ape BMU11 Unrecognized Marine Mammals Popularly Characterized as "Sea Serpents" BMU12 Cetaceans with Two Dorsal Fins Pygmy Elephants Koolookambas (New Species of Chimpanzee) BMX MAMMAL INTERFACE PHENOMENA BMX1 Curious Associations of Mammals BMX2 Interesting Interspecies ...
Terms matched: 3 - Score: 477 - 15 May 2017 - URL: /cat-biol.htm
... in New World Hawaiian Menehune Tales Precolumbian Contacts on West Coast South America The Mexican Messiah Prehistory of Japan Prehistory of Africa Fairies Myth Tales of the Deluge Sirius Mystery [MAK] Early Knowledge of Earth's Size Early Circumnavigation of Africa Early Knowledge of New Zealand "Little People" in Polynesia, Hawaii, North Carolina Ainu Legends Atlantis Legend Queras Indians/Southwest Celts in New World Quetzacoatl, Veracocha, Kulkulkan Legends of Whites in Polynesia Wakea: the Polynesian Prophet Norumbeha: a Legendary city Stories of Japanese Slaves in the Northwest Phoenicians ... . [BHE] Mummy Anomalies Teeth and Implications for the Settlement of Americas Calaveras Skull Controversy Minnesota Man/Loess Man/ Nebraska Man/Los Angeles Man/Vero Beach Man, etc. Caucasian Mummies in China Vast Ancient Cemeteries Light-Skinned Mummies in New Guinea Ice Man Tattoos Humerus (Olecranon) Perforation Neanderthal Fossils in the New World? Wyoming Mystery Mummy Evidence of Ancient Cannibalism Kennewick Man and Similar Recent Discoveries Rats in New Zealand That Suggest Pre-Maori Occupants Teeth and Ainu Origin Controversial Guadeloupe Skeleton Fossils Supporting the Multiregional Theory ... in America [MGS] Lascaux Cave Paintings Australian Rock Art, Strange Figures (Wandjina Drawings) Penguins in Mediterranean Mammoths and Elephants in America Michigan Tablets Rabbit-in-Moon Motif: Its Diffusion Rock Art and Echoes Anubis Cave Art Egypt in America Elephant Slabs Stone Age Art Sophistication Ostrich Domestication as Shown in Art Serpent Motif: Diffusion Pedra Furada Rock Art Holly Oak Pendant Fraud Tennessee Cave Art Red Bands in Caves Egypt in Australia Egypt in South Africa Mammoths in Egypt Ohio Copper Tablets China in South America Egyptian Electricity Palenque Astronaut China ...
Terms matched: 3 - Score: 470 - 15 May 2017 - URL: /cat-arch.htm
