11 results found containing all search terms.
... Science Frontiers ONLINE No. 37: Jan-Feb 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Grand Canyon Conundrum The Grand Canyon is really "grander" than that which meets the eye when standing on its rim. The immensity of the total excavation job can be appreciated by a trip to Red Butte near the southern rim. This conical hill rises 300 meters and is capped by the remnants of a lava flow, which has a radioisotope date of 9 million years. Thus, in the last 9 million years not only has the entire gorge of the Grand Canyon been cut but also a much greater volume of rock 300 meters thick adjacent to the present north and south rims. The immensity of the volume of sediment removed is ... the real issue. The first problem emerges downstream from Red Butte at Pierce Ferry. There we find 200 meters of Hualapai limestone, which has been dated at 8.7 million years from a thin layer of volcanic ash within the limestone. When this limestone was laid down, the geology is emphatic that no large, sediment-carrying river was in the vicinity. Most geologists agree that the lower end of the Grand Canyon was not active around this time. No one knows where the Col-orado River was flowing at this period. Some say southwest from Peach Springs; others point to a northwest route into Utah. All the likely alternate routes face serious geological obstacles such as lava barriers. What does seem certain is that the stock explanation of the formation of the Grand Canyon is ...
Terms matched: 2 - Score: 602 - 15 May 2017 - URL: /sf037/sf037p12.htm
... 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 Grand Canyon Shamed Again Exploration and mapping of submarine canyons cut into the continental shelves of Alaska and Siberia emphasize once again the colossal scale of these crustal gashes: "Erosion of some of the largest known submarine canyons has removed more than 20,000 km3 of former subduction margin between the Aleutian Islands and Cape Navarin, U.S .S .R . The canyons are incised as deeply as 2,400 m into Tertiary sedimentary and igneous rocks that make up the margin and attendant deep sedimentary basins along the outer Bering shelf. Cutting of the seven major canyons probably occurred during low stands of sea level when the Bering shelf was exposed ... a depth of about -135 m, which allowed the ancestral Anadyr, Yukon, and Kuskokwim Rivers to carry large volumes of sediment to the outer shelf. Although their positions appear to be structurally influenced, the canyons apparently were cut by combinations of massive slumping and sliding of sediment deposited near the shelf edge and of scouring action of the resulting turbidity currents that carried debris to the abyssal sea floor, where deep-sea fans have formed." (Carlson, Paul R., and Karl, Herman A.; "Ancient and Modern Processes in Gigantic Submarine Canyons, Bering Sea," Eos, 64:1052, 1983.) Comment. The authors believe that submarine slumping and turbidity currents were sufficient to have eroded these huge canyons. Other geologists doubt this. The other possibility ...
Terms matched: 2 - Score: 536 - 15 May 2017 - URL: /sf032/sf032p11.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 QUESTIONABLE 200-MILLION-YEAR HIATUS Hiking down into the Grand Canyon of the Colorado is a geological education. As one descends past the beautifully exposed horizontal strata, one also turns back the geological clock in welldefined ticks. That is what the signs along the way say, and that is what all the textbooks proclaim! But when the juncture between the Redwall Limestone and Muav Limestone is reached, a 200million-year gap appears. The sign posted here by the National Park Service reads: An unconformity "Rocks of the Ordovician and Silurian Periods are missing in Grand Canyon. Temple Butte Limestone of Devonian age occurs in scattered pockets. ... Limestone rests on these Devonian rocks or on Muav Limestone of much earlier Cambrian Age." This supposed unconformity is puzling for several reasons: The two limestone strata "seem" conformable in most places. Both are nicely horizontal, and there is basically no evidence that 200 million years of erosion and tectonic disturbances separate them. In some places, the two limestone strata intertongue or interfinger, such that by moving vertically one flashed back and forth in 200-million-year jumps. In both limestone strata, one finds layers of the same micaceous shale containing the same fossil tubeworms, suggesting near-simultaneous deposition. In one place, the two limestones clearly grade into one another, with no separation at all. Anyone who walks down the Canyon trails can see that the evidence for a 200 ...
Terms matched: 2 - Score: 409 - 15 May 2017 - URL: /sf051/sf051g11.htm
... and unexpected that they defy the imaginations of the scientists who discovered them." A special sonar device named Gloria is being employed to produce high resolution maps of the seafloor. Apparently previous sonar sounding methods missed startling underwater volcanos, canyons, and immense delta-like deposits. About 170 miles off San Francisco, near a huge volcanic structure, Gloria discovered an underwater canyon comparable in size to the Grand Canyon. No one really knows how it was formed. This great chasm is associated with a delta-like deposit twice the area of Massachusetts. Normally, one expects alluvial fans at the ends of canyons, but in this instance the submarine canyon actually cuts down into the fan. Where such a huge mass of material came from is a mystery rivaling that of the canyon's origin ... Issues This Issue Sourcebook Project Sourcebook Subjects Deeper Mysteries "The first detailed views of vast stretches of the seafloor in U.S . coastal waters have revealed features so immense and unexpected that they defy the imaginations of the scientists who discovered them." A special sonar device named Gloria is being employed to produce high resolution maps of the seafloor. Apparently previous sonar sounding methods missed startling underwater volcanos, canyons, and immense delta-like deposits. About 170 miles off San Francisco, near a huge volcanic structure, Gloria discovered an underwater canyon comparable in size to the Grand Canyon. No one really knows how it was formed. This great chasm is associated with a delta-like deposit twice the area of Massachusetts. Normally, one expects alluvial fans at the ends of canyons, but in ...
Terms matched: 2 - Score: 297 - 15 May 2017 - URL: /sf039/sf039p13.htm
... pages Home Page Science Frontiers Online All Issues Last Issue Next Issue Sourcebook Project Sourcebook Subjects Contents Archaeology Two Remarkable Inscribed Stones Astronomy Thou Canst Not Stir A Flower, Without Troubling of A Star Natural Laser Beacons A Mysterious Object Biology Subtle is the Virus An Ocean Full of Viruses An Even Larger Ocean of Life Spores Still Viable After 7,000 Years Animals As Nutrient Carriers Geology Terranes Continue to Pile Up Grand Canyon Shamed Again When the Earth Shifted Gears The Oklo Phenomenon and Evolution Earth's Magnetic Field Jerks Osmium Isotopes Support Meteoric Impact Geophysics Incredible Phosphorescent Display on the China Sea Ball Lightning Splits and Recombines Inside Soviet Airliner Booms Startle Arkansas Psychology Mental Deflection of Cascading Spheres What Makes A Calculating Prodigy? False Pregnancies in Males Unclassified The 'Great Silence'; Or Why Aren't Aliens Landing on ... White House Lawn? ...
Terms matched: 2 - Score: 230 - 15 May 2017 - URL: /sf032/index.htm
... miles. Exactly why anyone would wish to go to such trouble escapes the modern mind. American archeologists generally eschew ley hunting, but S. Lekson, from the University of Colorado, was surprised to find that three important Anasazi sites in the Southwest are actually aligned with high precision along Longitude 107 57'. The three sites are: Aztec Ruins and Chaco Canyon (New Mexico) and Casas Grandes (Mexico). Even though the first and last are separated by about 450 miles, all sites are within 1 kilometer (5 /8 of a mile) of the north-south line. Lekson maintains that an alignment this precise cannot have happened by chance. How could the Anasazi have achieved such an accurate alignment over such rugged terrain? It would not be easy even with modern ... even when they were separated by many miles. Exactly why anyone would wish to go to such trouble escapes the modern mind. American archeologists generally eschew ley hunting, but S. Lekson, from the University of Colorado, was surprised to find that three important Anasazi sites in the Southwest are actually aligned with high precision along Longitude 107 57'. The three sites are: Aztec Ruins and Chaco Canyon (New Mexico) and Casas Grandes (Mexico). Even though the first and last are separated by about 450 miles, all sites are within 1 kilometer (5 /8 of a mile) of the north-south line. Lekson maintains that an alignment this precise cannot have happened by chance. How could the Anasazi have achieved such an accurate alignment over such rugged terrain? It ...
Terms matched: 2 - Score: 230 - 15 May 2017 - URL: /sf111/sf111p02.htm
... Civilization Another Remarkable Specimen of Ancient Man Astronomy The Puzzle of the Moon's Origin When Mars Had Lakes Why Aren't the Martian Craters Worn Down? Flip-flop Radio Jets? Biology The Genome's Responses to Challenges "hopeful Monsters" in Iceland? Parasites May Reprogram Host's Cell Geology More Doubts About Asteroids The Earth is Expanding and We Don't Know Why The Grand Canyon Conundrum Evidence for A Giant Pleistocene Sea Wave Recent Pulsations of Life Geophysics "Crystal" Ball Lightning The Big Divot! Shower of Coke Chemistry & Physics Squarks and Photinos At Cern? What Does it All Mean? The Secret of it All is in the Pi ...
Terms matched: 2 - Score: 230 - 15 May 2017 - URL: /sf037/index.htm
... Ramparts ETR7 Buried Ridges within Continental Margins ETR8 Desert Ridges of Unknown Origin ETS CREVICULAR CRUSTAL STRUCTURE ETS1 Biological Evidence for Wide spread Crevicular Structure ETS2 Fluid-Filled Crevicular Structure at Great Depths ETS3 Seismic Evidence for Deep Crevicular Structure ETV VALLEYS, CHANNELS, FURROWS ETV1 Submarine Canyon Anomalies ETV2 Sea-Floor Channels ETV3 Wind Gaps ETV4 Height Differences of Opposite River Banks ETV5 The Channelled Scablands ETV6 Apparently Youthful Rivers ETV7 Grand-Canyon Anomalies ETV8 Flume-Like Furrows on Continental Slopes ETV9 Labyrinthine Topography ETV10 Uneroded, Elevated Plains of Great Age ETV11 Incised Meanders EZ THE GEOMAGNETIC FIELD AND PALEOMAGNETISM EZC MINOR PERTURBATIONS OF THE GEOMAGNETIC FIELD [GEZ] EZC1 Local Compass Anomalies EZC2 Magnetized Geological Features EZC3 Anomalies of Oceanic Magnetic Anomalies EZC4 Geographically-Specific Geomagnetic Anomalies EZC5 Earth-Current Anomalies EZF CONFIGURATION ANOMALIES AND SECULAR VARIATIONS OF THE ... Holes ETB8 "Bottomless" Pits ETB9 Large Assemblages of Glacial Kettles ETB10 Depressions in Chalk Country ETC CRATERS, ASTROBLEMES, LARGE CIRCULAR STRUCTURES ETC1 Astroblemes (Starwounds) ETC2 Very Large Depressions of Probable Meteoric Origin ETC3 Hypothetical (and Still Undiscovered) Craters ETC4 Periodicity of Crater Ages ETE RAISED BEACHES, FOSSIL CORAL REEFS, TERRACES ETE1 Raised and Submerged Beaches ETE2 Fossil Coral Reefs ETE3 Terraces along Rivers, Submarine Canyons, Sea-Floor Channels ETE4 Inland, High-Level Terraces and Erosion Surfaces ETE5 Periodically Created Beach Terraces ETH GUYOTS, PLATEAUS, UNUSUAL MOUNTAINS ETH1 Flat-Topped Seamounts ETH2 Anomalous Oceanic Plateaus ETH3 Mountain Curiosities ETL PLANET-SCALE TOPOGRAPHIC ANOMALIES ETL1 Land-Water Distribution ETL2 Anomalies of Island Arcs ETL3 Patterns of Lineaments ETL4 Relative Velocities of Continents ETL5 Indications of an Expanding Earth ETL6 Continental Fits - ...
Terms matched: 2 - Score: 227 - 15 May 2017 - URL: /cat-geol.htm
... into the Mediterranean had cut similar gorges into solid rock long ago. No one could provide an acceptable explanation for the deep-cut gorges until the evaporites proved that the water level had been low enough for the rivers to cut the gorges subaerially. In other words, the Mediterranean's level fell several thousand feet, allowing the rivers to erode gorges much as the Colorado does today in the Grand Canyon. (Smith, E.G . Walton; "When the Mediterranean Went Dry," Sea Frontiers, 28:66, 1982.) Comment. The Med's buried gorges are obviously close cousins of the many submarine canyons found around the world's continental shelves. Most geologists strongly resist any explanation of the submarine canyons involving subaerial erosion, because no one believes the ... ever dropped thousands of feet. True, the Med's evaporites confirm a great reduction in water level there, but the flat-topped guyots in the Atlantic and Pacific do the same for the oceans -- or at least seem to. The guyot tops are now thousands of feet below the surface, just like the Mediterranean's evaporites. It is thought-provoking to notice that the Mediterranean (and the oceans?) began to dry up about 5 million years ago, just about when humans are supposed to have split off from the other primates. Reference. Flat-topped guyots are cataloged at ETH1 in Carolina Bays, Mima Mounds. Description of this book here . From Science Frontiers #21, MAY-JUN 1982 . 1982-2000 William R. Corliss ...
Terms matched: 2 - Score: 227 - 15 May 2017 - URL: /sf021/sf021p11.htm
... it in the violation of the Hardy-Weinberg concept, or is it in the time alloted for gene pool changes to occur?" Meyer answers his questions by stating that the Hardy-Weinberg equilibrium concept seems reasonably well-founded, so that the problem must lie in the length of time estimated for the Kaibab squirrel's isolation from surrounding populations. In effect, Meyer concludes that the Grand Canyon is much younger than generally supposed. (Meyer, John R.; "Origin of the Kaibab Squirrel," Creation Research Society Quarterly, 22:68, 1985.) The Kaibab squirrel is isolated in the Kaibab Plateau (60 x 35 miles in extent). South of the canyon and elsewhere, the similar Albert squirrels may be found. From Science Frontiers #44, ... -APR 1986 . 1986-2000 William R. Corliss ...
Terms matched: 2 - Score: 209 - 15 May 2017 - URL: /sf044/sf044p10.htm
... Science Frontiers ONLINE No. 127: Jan-Feb 2000 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The Great Hopewell Road Ancient peoples had a thing about processional roads; that is, roads used for rituals rather than commerce or simply getting from one place to another. In Britain, for example, there are the grand processional avenues at Avebury and the longer, wider Icknield Way. In South America, the famed Inca roads were preceded by thoroughfares 100feet wide that had no obvious practical purpose. The hundreds of miles of unnecessarily straight roads leading to Chaco Canyon in New Mexico seem to have been primarily for pilgrims making ritual treks to the great ceremonial complex in the canyon. Did the Indians east of the Rockies construct special roads for ritual ... ? We do know of the Mohawk Trail, the Virginia Warriors Trail, and other utilitarian roads through the wilderness. And before the settlers plowed them up, there were travel-worn trails six feet deep in the earth of Iowa. Now, we learn that, indeed, the Hopewell Culture may have built a long road mainly for ritual processions. It is called the Great Hopewell Road, and it is thought to connect the Hopewell centers at Newark and Chillicothe -- a distance of 60 miles through the heart of Ohio. In 1862, the first 6 miles of this controversial road, marked by parallel earthen banks, were surveyed by two brothers, C. and J. Salisbury. They noted that the road extended much farther in the direction of Chillicothe. B. Lepper, ...
Terms matched: 2 - Score: 208 - 15 May 2017 - URL: /sf127/sf127p15.htm
