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Topic: List of oceanic trenches

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  Peru-Chile Trench - Wikipedia, the free encyclopedia
The Peru-Chile Trench, also called Atacama Trench, is an oceanic trench in the eastern Pacific Ocean, about 160 kilometers (100 mi) off the coast of Peru and Chile.
The trench is a result of the eastern edge of the Nazca Plate being subducted under the South American Plate.
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.
en.wikipedia.org /wiki/Atacama_Trench   (169 words)

 List of reference tables
This is a list of reference tables, similar to the collection of reference tables found at the back of almanacs, dictionaries and encyclopedias (or an index of them, if they're scattered throughout the work).
List of mean centers of U.S. population during the 20th century
List of monasteries dissolved by Henry VIII of England
www.starrepublic.org /encyclopedia/wikipedia/l/li/list_of_reference_tables.html   (1037 words)

 Review For Exam 2 - OS 211   (Site not responding. Last check: 2007-10-23)
increasing latitude; increasing elevation; increasing proximity to a mountain; to a valley; to a mid-ocean ridge; to a trench.
List and explain the changes that occur to oceanic lithosphere as it ages.
List the events that occur in the formation of a passive margin, from initial rifting to a mature margin with active seafloor spreading.
bell.mma.edu /~jbouch/OS211F97Review2.html   (447 words)

 Learn more about List of reference tables in the online encyclopedia.   (Site not responding. Last check: 2007-10-23)
List of accidents and incidents on commerical airliners grouped by airline
List of accidents and incidents on commerical airliners grouped by year
List of songs in which the title pretty much sums up the entire point of the whole song
www.onlineencyclopedia.org /l/li/list_of_reference_tables.html   (1071 words)

 GEOS110 Study Guide Chapter 19 (text only)   (Site not responding. Last check: 2007-10-23)
List 3 pieces of evidence A. Wegener used to support his hypothesis of continental drift.
List multiple types of data generated from extensive studies of the ocean basins that led Hess to synthesize his hypothesis of sea-floor spreading.
Characterize the oceanic trenches with respect to tectonic activity, landforms, heat flow, earthquake-focus depth, and composition of volcanic extrusive rocks.
www.lhup.edu /jway/110/110sg.19txt.htm   (461 words)

 List of reference tables
List of size, measurement and conversions topics[?] (these could easily be cross-referenced under other relevant categories as well)
List of abbeys and priories: Ireland, England, Scotland, Wales, Northern Ireland
List of rivers: Europe, Asia, Africa, Americas, CH
www.ebroadcast.com.au /lookup/encyclopedia/li/Lists.html   (444 words)

 List of oceanic trenches - Wikipedia, the free encyclopedia
Mariana Trench (deepest known part of the oceans)
Western Pacific ocean; between Palau Islands and Mariana Trench
This page was last modified 18:01, 16 July 2006.
en.wikipedia.org /wiki/List_of_oceanic_trenches   (75 words)

 Plate Tectonics
List the three types of plate boundaries and describe the type of motion involved at each.
The deep sea trench is the site of a subduction zone, where oceanic crust is being carried down into the mantle, where it begins to melt.
The earthquake foci are shallowest nearest the trench, and become deeper in a landward direction (or toward a volcanic island arc).
gpc.edu /~pgore/Earth&Space/GPS/platetect.html   (2923 words)

 Plate Tectonics
Inclined zone of earthquake foci adjacent to oceanic trench slopes downward under the overriding plate.
The destruction of the oceanic lithosphere caused earthquakes down to depths of 700 to 800 km (440-500 miles), explaining the presence of the deepest earthquakes adjacent to oceanic trenches.
The plate boundaries are mainly represented by oceanic ridges and trenches.
www.mhhe.com /earthsci/geology/mcconnell/pte/pt.htm   (1066 words)

Lithosphere plates are composed of oceanic and continental crust and the underlying uppermost mantle.
This produces shallow to deep (large) earthquakes and a trench with composite volcanoes overlying the subduction zone, forming from magma released by partial melting of oceanic crust of the subducting plate.
Oceanic crust forms at diverging ridges and over hot spots from magma produced by partial melting of ultramafic rock in the mantle and is composed of gabbro underlying basalt.
www.personal.kent.edu /~masim/Lctures.htm   (9148 words)

 List of reference tables - Gurupedia
List of mountains on Io List of craters on Mars
List of Judicial Committees of the Privy Council and House of Lords cases
List of climbing topics, List of climbing areas
www.gurupedia.com /l/li/list_of_reference_tables.htm   (1148 words)

 Plate Tectonics : Plate Boundaries
Even though the oceanic plate as a whole sinks smoothly and continuously into the subduction trench, the deepest part of the subducting plate breaks into smaller pieces.
When two oceanic plates converge one is usually subducted under the other and in the process a deep oceanic trench is formed.
The Marianas Trench, for example, is a deep trench created as the result of the Phillipine Plate subducting under the Pacific Plate.
www.platetectonics.com /book/page_5.asp   (831 words)

 OC/GEO 103 Lab 2
The cracks between the diverging plates of lithosphere are filled with magma that rises from the mantle beneath mid-ocean ridges, and solidifies into new oceanic crust along the crest of the mid-ocean ridge.
Subduction zones are places where an oceanic plate is bending down into the mantle and sinking (subducting) beneath another oceanic or continental plate.
List 2 other seamount chains in the Pacific and compare their orientation to the Hawaiian-Emperor chain.
oregonstate.edu /instruct/oc103/lab2.html   (1436 words)

 Indonesia Oceanic Cetacean Program
The waters of Indonesia include numerous coastal and marine habitats, and are characterised by strong currents and complex bottom topography such as deep sea trenches, sea mounts and volcanic islands result in productive localised upwellings and an impressive array of rare marine life.
Global and oceanic circulation exchanges are channelled through deep-sea trenches and deflected by oceanic islands, producing a complex and dynamic oceanic environment.
Oceanic areas in the vicinity of migratory cooridors to monitor the presence of oceanic cetaceans.
www.apex-environmental.com /IOCP.html   (1055 words)

 List of reference tables - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-23)
List of Acts of the Parliament of Ireland
List of Justices of the Supreme Court of the United States by court composition
List of Justices of the Supreme Court of the United States by seat
en.wikilib.org /wiki/List_of_reference_tables   (946 words)

 Structure of Earth 7I2
The greatest oceanic depth so far recorded, 11,515 m, is in the Mindanao Trench, east of the Philippine Islands.
Other major features of oceanic basins are continental shelves, submerged extensions of the continental masses, usually lying at depths of less than 200 m.
The constant flow of oceanic waters affects conditions where organisms live, warming the eastern continental coasts and northern portions of west coasts of continents and cooling the other western portions of continents.
www.utm.edu /departments/ed/cece/seventh/7I2.shtml   (1436 words)

 ScienceDaily: Diamonds Have Oceanic Origin, Says University Of Toronto Geologist
List of rocks -- This page is intended as a list of all rock...
Oceanic ridge -- An oceanic ridge is an underwater mountain range, formed by plate tectonics.
Oceanic trench -- The oceanic trenches are hemispheric-scale long but narrow topographic depressions of the sea floor.
www.sciencedaily.com /releases/2003/05/030501075621.htm   (1635 words)

Oceanic crust is created at the mid-oceanic ridges and destroyed at the oceanic trenches.
On average of oceanic crust is 7 km thick and mainly composed of the igneous rock basalt.
Oceanic crust is returned to the mantle at the subduction zones found along the continental margins.
www.physicalgeography.net /fundamentals/studyguide_ch10.html   (6843 words)

 DbOfLists   (Site not responding. Last check: 2007-10-23)
List of city nicknames (with a separate list of city nicknames in the United States)
List of countries by name, by capital, by government
Lists of computer syntax patterns (various languages together by pattern)
www.transtheoretical.com /html/dboflists.html   (491 words)

 UH Press Journals: Oceanic Linguistics. 34 (1995): 191-201
(He lists 5 pages of references against TandK’s 21 pages.) Nevertheless, his strength lies in having done the kind of fieldwork that is needed to begin describing how multilingual Melanesian villagers manipulate the languages in their repertoires, rather than how each language looks after it has been immobilized in its own private pickle jar.
Unlike the culturally neutral basic vocabulary used in compiling Swadesh lists, the endolexicon includes all the basic vocabulary in everyday use in a particular speech community, including culture-specific categories of food, clothing, and shelter, as well as all the necessary grammatical items to put basic sentences together, including pronouns and inflectional affixes.
People who compare Swadesh lists in an effort to track prehistoric population movements will not see such ectolexical traces of partially abandoned immigrant or indigenous languages.
www.uhpress.hawaii.edu /journals/ol/OL341p191.html   (3888 words)

 Blank Page   (Site not responding. Last check: 2007-10-23)
List the three types of islands on the basis of their formations.
List the three types of rocks found on the earth’s crust.
List six pieces of evidence that support this theory.
www.hcc.hawaii.edu /distance/ocean/ocean201/geological/geological.htm   (671 words)

 The Subduction Factory Science Plan
Subduction of pore fluids and hydrous minerals in oceanic sediments and altered basalt, their distillation at depth, transport through the mantle, and re-emission from arcs represents earth’s deepest hydrologic cycle, one which has a profound impact on the global budgets of volatiles such as H
The dip of the subducted slab defines the path-length of the slab from the trench to beneath the arc.
Understanding aging of the oceanic crust, in general, is critical for reconstructing the volatile cycle at convergent margins.
www.geo.ua.edu:16080 /AMG/OldMargins/SF_Sci_Plan.html   (14657 words)

 Bryce Canyon National Park: GEODETECTIVE Program
Because oceanic crust is more dense it tends to sink below the lighter continental crust when the two crust types collide.
This melted oceanic crust becomes less dense (because it is now in a liquid form) and therefore rises towards the surface causing continental crust to rise up above it, forming mountains and volcanoes.
A trench is a depression in the sea floor that can be over a mile deep and hundreds of miles long.
www.nps.gov /brca/geodet/geodet_crust.html   (1264 words)

 Plate Tectonics Deep Ocean Trenches and the Pacific Ring of Fire
Japan lies on the cusp of the Pacific-Philippine-Eurasian triple plate junction, where the complex interactions of three tectonic plates is unpredictable and loaded with potential activity.
When the Pacific Plate encounters the Philippine Plate, because it is older and more dense than the younger Philippine, it subducts below and results in the formation of a deep ocean trench.
The Marianas Trench is 36,000 feet below sea level - the deepest known region of the world's oceans.
www.platetectonics.com /oceanfloors/japan.asp   (142 words)

 Acoustics Monitoring Program
T-phases were recorded on seismic stations seaward from the Tonga trench it is hypothesized that the source of the P to T conversion took place in the trench region.
This paper is included in the T-phase reference list because it deals with the dispersion of acoustic waves in the SOFAR channel dispersion is also observed for T-phases.
Several criteria need to be met for this to happen for the conversion of P to T including steep submarine slope at the transition point, and the magnitude and frequency of the P wave.
www.pmel.noaa.gov /vents/acoustics/biblio_tphase.html   (9601 words)

 NOAA Ocean Explorer: New Zealand American Submarine Ring of Fire 2005
At the other end of the oceanic plate, where subduction occurs and the plate is recycled into the earth's mantle, there is a much higher diversity in the settings of volcanic activity, and there has been much less study of the type of hot spring and hydrothermal features that might exist.
There are thousands of kilometers of volcanic arcs behind deep ocean trenches along the “convergent margins” where oceanic crust is subducted.
In the subduction zone of convergent oceanic margins, the sinking oceanic plate carries large quantities of water and sediment down into the mantle.
www.oceanexplorer.noaa.gov /explorations/05fire/background/chemistry/chemistry.html   (1275 words)

 Freeman-Lynde GEOL3350 Chapter 2 Questions
List the 3 major environments of deposition and the subenvironments of each.
List the 2 periods used by North American geologists in place of the Carboniferous period in order from oldest to youngest.
List the oldest 4 periods and the youngest period of the Paleozoic era in order from oldest to youngest.
www.arches.uga.edu /~rfreeman/GEOL3350_Chap_2_quest.html   (7570 words)

 Structure of The Earth   (Site not responding. Last check: 2007-10-23)
Along the pacific coast, submarines had found amazingly deep trenches and it seemed that the Earth's surface was slowly moving into these trenches and vanishing as fast as new surface was being created along the ocean ridges.
Oceanic crust is made of younger rocks like the ones found along the Mid Atlantic Ridge.
Oceanic crust is the heavier of the two crustal types, so it will sink below Continental crust.
www.geography-site.co.uk /pages/virtual-school/lessons/Tectonics02.html   (1361 words)

 Study Guide   (Site not responding. Last check: 2007-10-23)
You must correctly identify the locations of at least 8 of 10 places (randomly chosen from the list of 100) on a world map to pass the geography proficiency test.
Differences in composition, and relative density and ages of oceanic and continental crusts.
How oceanic sediments are collected and studied; importance of ocean sediments to Earth history.
www.utdallas.edu /~pujana/oceans/NewF01Syllabus.html   (999 words)

 geoglec7   (Site not responding. Last check: 2007-10-23)
Explain why convergence of oceanic with oceanic crust will produce an arc-shaped trench with volcanic activity on the inside of the arc.
Relate the pattern of distribution of earthquakes, trenches, and volcanoes in the Pacific and along its coasts to plate tectonics.
Relate the distribution of young and old oceanic crust to plate tectonic process.
www.personal.psu.edu /faculty/j/e/jea4/geoglec7.html   (352 words)

 USGS, University of New Hampshire, and NOAA Cooperate in Exploring the Puerto Rico Trench
The Puerto Rico Trench, with water depths exceeding 8,400 m, is the deepest place in the Atlantic Ocean, comparable to the deep trenches in the Pacific Ocean.
The Puerto Rico Trench, in contrast, is situated at a boundary between two plates that slide past each other with only a small component of subduction.
The trench is shallower where the component of subduction is larger.
soundwaves.usgs.gov /2002/11/fieldwork3.html   (674 words)

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