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Topic: Peru-Chile Trench

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Oceanic trench - Wikipedia, the free encyclopedia Trenches distant from an influx of continental sediments lack an accretionary prism, and the inner slope of such trenches is commonly composed of igneous or metamorphic rocks. Trenches are centerpieces of the distinctive physiography of a convergent plate margin. The outer trench slope is disrupted by a set of subparallel normal faults which staircase the seafloor down to the trench. www.wikipedia.org /wiki/List_of_oceanic_trenches

ninemsn Encarta - Search Results - Peru-Chile Trench Peru-Chile Trench (Atacama Trench), ocean trench in the Pacific Ocean, marking an active geological boundary where an oceanic plate is subducting... ninemsn Encarta - Search Results - Peru-Chile Trench The water in the trenches is cold: its temperature being typically between 0° C and 2° C, but increasing slowly with depth because of the increasing... au.encarta.msn.com /Peru-Chile_Trench.html

Geography of Chile - Natural Regions Chile's northern neighbors are Peru and Bolivia, and its border with Argentina to the east, at 5,150 kilometers, is one of the world's longest. Chile's shape was determined by the fact that it began as a Spanish settlement on the western side of the mighty cordillera of the Andes, in the central part of the country. In this lake district of Chile, the valley between the Andes and the coastal range is closer to sea level, and the hundreds of rivers that descend from the Andes form lakes, some quite large, as they reach the lower elevations. worldfacts.us /Chile-geography.htm

MSN Encarta - Ocean and Oceanography Trench areas, or subduction zones, are characterized by volcanic and seismic activity, indicative of the motions and stresses of the earth’s crustal plates ( see Plate Tectonics ; Seismology). The Pacific trenches commonly reach depths of more than 7 km (4.3 mi); the deepest known point, in the Mariana Trench east of the Philippines, lies 11 km (6.9 mi) beneath the surface. At these places, along almost the entire rim of the Pacific, deep trenches are formed as crust is subducted and returned to the mantle. encarta.msn.com /encyclopedia_761574766/Ocean_and_Oceanography.html

Peru-Chile Trench - Wikipedia, the free encyclopedia The Peru-Chile Trench, the forearc and the western edge of the central Andean plateau (Altiplano) delineate the dramatic "Bolivian Orocline" that defines the Andean slope of southern Peru, northern Chile, and Bolivia. The Peru-Chile Trench, also called Atacama Trench, is a submarine trench in the eastern The trench is a result of the eastern edge of the Nazca Plate being subducted under the en.wikipedia.org /wiki/Peru-Chile_Trench

honeybee scientific order found here where is the peru chile trenchwhere is the peru chile trench. www.jugendkinowsw.de /290344_honeybee_scientific_order.html

Understanding plate motions [This Dynamic Earth, USGS] Off the coast of South America along the Peru-Chile trench, the oceanic Nazca Plate is pushing into and being subducted under the continental part of the South American Plate. Trenches are the deepest parts of the ocean floor and are created by subduction. The trenches are the key to understanding how island arcs such as the Marianas and the Aleutian Islands have formed and why they experience numerous strong earthquakes. pubs.usgs.gov /publications/text/understanding.html

Peru-Chile Trench --  Encyclopædia Britannica In cross section, trenches are generally V-shaped with either a series of terracelike steps or a dramatic fall to the ocean floor. The Republic of Peru is a land of contrasts: high mountains, dense rain forests, and barren deserts are all found in close proximity. Trenches are highly localized submarine gashes in the Earth's crust. www.britannica.com /eb/article?eu=60862

Oceanography 2 The longest trench is the Peru-Chile Trench, which extends some 5,900 kilometres along the west side of South America. The landward or island-arc slope of the trench is often interrupted by a submarine ridge, which sometimes breaks the ocean surface, as in the case of the Java Trench. The Aleutian Trench extends from the northernmost point in the Gulf of Alaska west to the Kamchatka Peninsula in the Soviet Union. www.crystalinks.com /ocean2.html

Cruise Plan Judging from determinations made in the 1950s, we expect that the temperature in the Tonga Trench at its greatest depths will be close to 2°C. This contrasts to the temperature in the Mariana Trench of approximately 2.5°C at a comparable depth. First, the Tonga Trench is the coldest known habitat having a depth of 10,800 meters. It is also conceivable that thermophilic microorganisms are found in the deep waters of the Tonga Trench because of its close proximity to submarine hydrothermal activity in the Lau Basin. sio.ucsd.edu /supp_groups/shipsked/2000/allships2000/2000MV/Yayanos/YayanosPlan.html

The pink lines on this map of the Pacific Ocean represent deep ocean trenches Some of the other trenches of the Pacific are the Aleutian, Peru-Chile, Kuril, and the Japan trench. These trenches are some of the lowest points on the crust of the Earth. Marianas Trench north of New Guinea is the deepest point on the Earth's surface at 36,201 feet below sea level. www.geocities.com /cdegonia/mountain_building_10.htm

Peruvian Graffiti: Andean Geography / g c i 275 From the depths of the Peru-Chile trench just off the Peruvian coast to the Andean peaks is a difference in altitude of more than 40,000 feet within a distance of 50 miles. The chilly currents of the Pacific Ocean that flow out of the Peru-Chile Trench supercharges the coastal air with humidity, inhibiting rainfall. One of the most illuminating moments for in understanding Peru and the Andes was looking at a map that showed altitude, but especially the areas above 2000 meters above sea level. www.gci275.com /peru/geo.shtml

A Global Representative System of Marine Protected Areas On the Pacific coasts of Central and South America, tidal marshes are confined to small, disjunct inlets along the mountainous high-energy coast of southern and central Chile, and the paucity of marshes along the arid coasts of northern Chile and Peru may result in part from the absence of lagoons and river deltas. Those countries which are participating in Permanent Commission for the South Pacific (Colombia, Ecuador, Peru and Chile) have defined their priorities for protected areas at the national level and have provided for these to form part of the network of marine and coastal areas in the Pacific Southeast. Towering cliffs are found along the Peruvian and Chilean and coasts; the Aysen region in southern Chile includes numerous rocky cliffs and islands due to the effects of glaciation. www.deh.gov.au /coasts/mpa/nrsmpa/global/volume4/chapter17.html

EARTHQUAKE AND TSUNAMI OF JUNE 23, 2OO1 IN PERU - Dr. George Pararas-Carayannis The segment of subduction and faulting along and paralleling the Peru-Chile Trench (from about 15 to 18 South Latitude) and the obliquity of convergent tectonic plate boundaries in this region of Southern Peru, may be the reason for the shorter rupture lengths of major earthquakes and the generation of only local destructive tsunamis. The June 23, 2001 earthquake occurred in the western part of an active seismic belt that lies between the Andean mountain block and the Peru-Chile Trench. The June 23, 2001 earthquake in Peru was very shallow in depth and this may have limited the extent of the tsunamigenic area. www.drgeorgepc.com /Tsunami2001Peru.html

In the Beginning: Compelling Evidence for Creation and the Flood - Trenches.html Four others lie beyond this area: the Peru-Chile Trench, the Middle America Trench, the Puerto Rico Trench, and the South Sandwich Trench. Most oceanic trenches are concentrated in the western Pacific. Why should the center of this trench region be exactly opposite the center of the Atlantic Ocean, both in latitude and longitude? www.creationscience.com /onlinebook/Trenches.html

earthquakes in Chile Chile is located on a tectonic plate boundary and a subduction zone called the Peru-Chile trench. The outstanding destruction from the Valdivia earthquake was devastating, and although Chile hasn’t seen and earthquake with such magnitude since Valdivia, the earth continues to shake the unstable grounds of Chile. Chile has experienced all of these phenomena-the Andes mountains and a long history of earthquakes and volcanoes. www.earlham.edu /~bieriir/earthquakes

Tetsuzo Seno, Earthquake Res Inst, Univ of Tokyo The collision force due to slab pull at the Peru-Chile Trench should oppose this driving force, and would have produced the Cordilleran tectonics in the Andes. It has been generally believed that the continental plate is driven by suction force at the trench, and the mantle drag is operating as a resistive force. The stress modeling of the South American plate, taking into account the vertical and horizontal force variation due to structural variation of the plate, shows that the South American plate is driven toward west by the mantle drag (Seno and Saito, in preparation). www.msi.umn.edu /~davey/japabs/sixteen.html

Tsunamis Originating from Peru Tsunamis in this area of the world originate due to seismic activity associated with the Peru-Chile Trench, located approximately 100 - 200 kilometers off the Peruvian coast. At this latitude, the Peru-Chile trench is the site of subduction of the Nazca Plate beneath the South American Plate. As a consequence most of the large, tsunamigenic earthquakes to strike Peru in the past, were centered off of the southern shore. www.usc.edu /dept/tsunamis/peru

MPL - News - Cruise Reports This past week we concentrated our efforts towards determining the centimeter level horizontal location of two transponder arrays 11 nm and 28 nm from the Peru-Chile Trench. GPS data collected onboard Revelle and at reference stations in Peru operated by colleagues at the Instituto Geofisico Del Peru will be post-processed to determine the sub-decimeter-level position of the interrogation hydrophone mounted in Revelle's instrument well and extending just below the keel. We then moved to the site 11 nm miles east of the trench and have collected the first 24 hours of data. www-mpl.ucsd.edu /news/cruise.reports.html

Where It Starts -The Kermadec Trench connects with the Tonga Trench to the north and the North Island of New Zealand to the south. The other trenches on the map are mostly at sea, but two are on land. -The New Hebrides Trench extends from New Guinea to the east-southeast. home.earthlink.net /~dengelhardt/Starts.html

Chapter 26  Appendix Part 1 Geological surveys of the Peru-Chile Trench have revealed a different picture. In order for the Earth's radius to remain constant, the trenches around the globe must swallow oceanic crust at the same rate that the ridge-rift systems are producing new ocean floor. The only small trench (South Sandwich) in the region is at right angles to the hypothetical spreading zone. www.godrules.net /evolutioncruncher/a26a.htm

AngieIproject The trenches that were observed were the Japan Trench, Fiji Trench, Peru-Chile Trench, Java Trench, and Aleutian Trench. The Peru-Chile Trench has earthquakes with depths close to 700 kilometers. To try and prove this, depths of earthquakes were taken from different trenches. ourworld.compuserve.com /homepages/robertalink/angieipr.htm

CURRENTS IN THE DEEP OCEAN OFF CHILE Between July 1993 and September 2000, a recording current meter (RCM) mooring was maintained near 30ºS at a deep ocean site (water depth 4300 m) about 150 km off the Chilean coast and about 70 km seaward of the axis of the Peru-Chile trench. This flow apparently forms part of the mid-depth outflow of the Pacific Ocean which may be concentrated near the Chilean coast, as indicated by 14C data, and which may have increased in recent decades, as indicated by dissolved oxygen data from repeat hydrographic sections in the region (Shaffer et. www.olympus.net /IAPSO/abstracts/IW-02/IW02-08.htm

Peru - Surch Peru is a potentially wealthy country with a rich and varied cultural and architectural... Peru is rich in deposits of copper, silver, lead, zinc, oil and... 'Piura' is a city in Peru, and the population is 359,400. www.surch.co.uk /peru

A description of the 1868 Peruvian tsunami that destroyed the port of Arica The land along the extreme northern coast of Chile, including Arica, was a part of Peru from the country's inception until the later part of the nineteenth century, when the War of the Pacific broke out. During the war, Peru and Chile fought an off and on series of battles from 1879 to 1929. When the war finally ended in defeat for Peru, the country was forced by treaty to ceed Arica, and the surrounding lands to Chile. www.usc.edu /dept/tsunamis/peru/ptsu_1868.html

Pacific Ring of Fire It is associated with a nearly continuous series of oceanic trenches and volcanic mountain ranges. The Ring of Fire is a zone of frequent earthquakes and volcanic eruptions that encircles the basin of the Pacific Ocean. A number of land and sea features are in the Ring of Fire: (here listed clockwise) www.usapedia.com /p/pacific-ring-of-fire.html

Pacific Trenches Ocean trenches at the boundary of the plate and mountain chains on the continental plate often result. The Marianas Trench, just east of the Mariana Islands in the western Pacific, is the deepest seafloor depression in the world at 11,033 metres (36,198 feet). The Marianas Trench is one of many deepwater trenches formed by the geologic process of subduction. www.pacificislandtravel.com /nature_gallery/pacifictrenches.htm

Answers To The Geography Quiz What of the Earth's crustal plates is subducted into the Peru-Chile deep sea trench ? The correct answer was C, the Nazca Plate. www.zephryus.demon.co.uk /geography/resources/fun/ahard/1.html

The Causes of Earthquakes Since they are all moving they rub against each other in some places (like the San Andreas Fault in California), sink beneath each other in others (like the Peru-Chile Trench along the western border of South America), or spread apart from each other (like the Mid-Atlantic Ridge). At such places the motion isn't smooth--the plates are stuck together at the edges but the rest of each plate is continuing to move, so the rocks along the edges are distorted (what we call "strain"). The plates cover the entire surface of the globe. www.soest.hawaii.edu /GG/ASK/earthquakes.html

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