For the extinct cephalopod genus, see Andesites . Infobox Rock name Andesite type Igneous image Andesite pmg ss 2006.jpg image caption Photomicrograph of andesite in thin section between crossed polars composition Intermediate composition Intermediate br Major minerals plagioclase often andesine and pyroxene and or hornblende br Accessory minerals magnetite s, biotite , sphene , quartz Image Amygdaloidal andesite.jpg right thumb A sample of andesite dark groundmass with crystal habit List of crystal habits amygdaloidal vesicules filled with zeolite . Diameter of view is 8 cm. File Zarnov.jpg right thumb Andesite Mount arnov Vt nik , Slovakia File Andesite pillar.jpg thumb Andesite pillar in Slovakia Andesite IPAc en icon n d s a t is an extrusive igneous, volcanic rock , of intermediate composition , with aphanitic to porphyritic texture. In a general sense, it is the intermediate ... ref Alkali feldspar may be present in minor amounts. The quartz feldspar abundances in andesite and other ... to the most abundant phenocryst . Example hornblende phyric andesite , if hornblende is the principal accessory mineral. Andesite can be considered as the extrusive equivalent of plutonic diorite . Characteristic of subduction zones, andesite represents the dominant rock type in island arcs ... Habitat on Earth and Mars. Astrobiology, Vol.11 No.7. ref The name andesite is derived from ... San Fransisco ref Genesis of andesiteAndesite is typically formed at Convergent boundary convergent ... magma, the composition is returned to andesite, its intermediate phase. Andesite in space In 2009, researchers revealed that andesite was found in two meteorites numbered GRA 06128 and GRA 06129 that were ... 2007 field season. This possibly points to a new mechanism to generate andesite crust. ref http newswise.com ... Metamorphism Granite Origins of granite Fractional crystallization geology Andesite line Porphyry ... it Andesite he ka kk lt Andezitas hu Andezit nl Andesiet ja no Andesitt ... more details
The andesite line is the most significant regional geologic distinction in the Pacific Ocean basin. It separates the mafic basalt ic volcanic rocks of the Central Pacific Basin from the partially submerged continental areas of more felsic andesite andesitic volcanic rock on its margins. The andesite line parallels the subduction zone s and deep oceanic trench es around the Pacific basin. It is the surface expression of melting within and above the plunging subducting Slab geology slab . It follows the western edge of the islands off California and passes south of the Aleutian Islands Aleutian arc , along the eastern edge of the Kamchatka Peninsula , the Kuril Islands , Japan, the Mariana Islands , the Solomon Islands , and New Zealand s North Island . The dissimilarity continues northeastward along the western edge of the Andes mountains of South America to Mexico, returning then to the islands off California. Indonesia, the Philippines, Japan, New Guinea, and New Zealand lie outside the andesite line. Within the closed loop of the andesite line are most of the deep troughs, submerged volcanic mountains, and oceanic volcanic islands that characterize the Pacific basin . It is here that basaltic lavas gently flow out of rifts to build huge dome shaped volcanic mountains whose eroded summits form island arcs, chains, and clusters. Outside the andesite line, volcanism is of the explosive type. The Pacific Ring of Fire runs parallel to the line and is the world s foremost belt of explosive volcanism. The term andesite line predates the geologic understanding of plate tectonics . The term was first used in 1912 by New Zealand geologist Patrick Marshall to describe the distinct structural and volcanologic boundary extending from east of New Zealand to Fiji and north of the New Hebrides and the Solomon Islands. References http www.dnzb.govt.nz dnzb default.asp?Find Quick.asp?PersonEssay 3M44 Watters, W. A. Marshall, Patrick 1869 1950 . Dictionary of New Zealand Biography, updated ... more details
Andesite Vineyard is a Spring Mountain District , Napa Valley vineyard at the 2000 foot level of Spring Mountain, 5 miles up Spring Mountain Road from St. Helena, California St. Helena . Soils Soil at the top of Spring Mountain is very rocky and excellent for grapes. Andesite is one of the most abundant volcanic rocks in the Bay Area, ref Geological Guidebook of the San Francisco Bay Counties , State of California, Department of Natural Resources, Division of Mines, Bulletin 154, 1951, p. 239. ref and the top of Spring Mountain is primarily composed of Andesite ref Same Book, p 243. ref . This rocky soil strongly contributes to the unique quality and character of the wines produced in the Spring Mountain District. The Andesite Vineyard property is the 14 acre heart of the old Robinson property. Vines The planted area is a mountain saddle of three acres of Merlot and Cabernet Sauvignon . The Merlot is primarily east and a bit south facing the Cab primarily north and a bit west. Oddly, this causes the Cab to ripen first each year. Harvest Harvest at the top of Spring Mountain is always later than at the Napa Valley floor. Fruit sugar content rises as growing degree day s accumulate in September October. When the grapes are sweet, over 23 Bx Brix degrees Brix , the fruit is tasted until the complexity and flavor fully develops and specific vines are selected for harvest. Because this development is not practically measurable, all the premium wine makers here select grapes for harvest by taste. For Andesite Vineyard, every year is different, and after a half ton is selected, it is harvested and taken to a micro crush facility to be vinified. The minimal half ton size makes one ... bins harvested over a two week period. Wines Andesite Vineyard s three acre annual production is about ... of Cabernet Franc . Andesite Mervignon Wine is the only wine produced. Articles and Commentary http www.AndesiteVineyard.com AndesiteVineyard.com the Andesite Vineyard web page http www.SpringMountainDistrict.com ... more details
Basaltic andesite is a black volcanic rock containing about 55 silica . Minerals in basaltic andesite include olivine , augite and plagioclase . ref cite web url http www.siskiyous.edu shasta geo glo.htm title Glossary for the Geology of Mount Shasta ref Basaltic andesite can be found in volcanoes around the world, including in Central America ref cite book chapter Petrogenesis of Central American Tertiary ignimbrites and associated Caribbean Sea tephra first B.R. last Jordan coauthors Sigurdsson, H., Carey, S., Lundin, S., Rogers, R.D., Singer, B., Barquero Molina, M. title Geologic and tectonic development of the Caribbean plate boundary in northern Central America editor1 first Paul editor1 last Mann page 161 year 2007 publisher Geological Society of America ref and the Andes of South America . ref cite book chapter Early to middle Miocene backarc magmas of the Neuqu n Basin Geochemical consequences of slab shallowing and the westward drift of South America last1 Kay first1 Suzanne Mahlburg last2 Copeland first2 Peter title Evolution of an Andean margin a tectonic and magmatic view from the Andes to the Neuqu n Basin 35 degrees 39 degrees S lat editor1 last Kay editor1 first Suzanne Mahlburg editor2 last Ramos editor2 first Victor A. page 209 year 2006 publisher Geological Society of America ref Basaltic andesite is common in the volcanoes near McKenzie Pass in Oregon , United States . ref cite web url http vulcan.wr.usgs.gov Volcanoes Oregon HighCascades dee wright observatory.html title Dee Wright Observatory publisher United States Geological Survey accessdate 2011 01 01 ref References reflist basalt Volcanology stub Category Basalt Category Volcanic rocks Category Igneous rocks de Basaltandesit fr And site basaltique ... more details
Orphan date October 2008 Hornblende andesite porphyry is an intermediate volcanic igneous rock . Like most Porphyry geology porphyrys , it cooled at two separate rates, causing two sizes of crystals to be visible. Category Igneous rocks Volcanology stub petrology stub ... more details
italic title Unreferenced date March 2007 For the rock Andesite Taxobox name Andesites status fossil fossil range regnum Animal ia phylum Mollusc a classis Cephalopod a subclassis Ammonoidea genus Andesites genus authority subdivision ranks subdivision Andesites is an extinct genus of cephalopod belonging to the Ammonite subclass. Category Ammonites Ammonite stub eu Andesites pl Andesites ... more details
oclc 27910629 ref The grey to bluff andesite on Haddington Island is considered by many to be British ... s landmark buildings were faced with Haddington Island andesite the Hotel Vancouver and the British ... products.html Natural Landscape Stones Bedrock Granite Sales, Andesite, Basalt, Rhyolite, Sandstone Vancouver, BC, Canada ref Further information on the historic use of andesite on buildings in Vancouver can be found in the article Andesite in http regardingplace.com ?p 3208 Vancouver ... more details
The Ellesmere Island Volcanics are a Late Cretaceous volcanic group of volcano es and lava flows in the Qikiqtaaluk Region of northern Ellesmere Island , Nunavut , Canada . Ellesmere Island Volcanics are part of the Arctic Cordillera . This volcanic province is among the northernmost volcanism on Earth . History Even though these volcanics are about 90 million years old, the volcanoes and cinder are still discernible. ref http www.earth.rochester.edu pmag arctic arctic99 journalchris.html Chris s journal entries Retrieved on 2007 08 05 ref The volcanics of the Maskell Inlet Assemblage are mostly made up of tuff s, with smaller flows. Compositionally these are mostly andesite or undifferentiated andesite basalt . The volcanics on Ellesmere Island has been uncertainly associated to both the early volcanic activity of the Iceland hotspot and the Alpha Ridge . The Ellesmere Island Volcanics are part of the High Arctic Large Igneous Province . See also Portal Volcanism of Canada Volcanism of Canada Volcanism of Northern Canada List of volcanoes in Canada Strand Fiord Formation Iceland plume References Reflist Nunavut coord missing Nunavut Category Volcanism of Nunavut Category Landforms of Qikiqtaaluk Region Category Cretaceous volcanism Category Volcanic groups QikiqtaalukNU geo stub Canada geology stub ... more details
Unreferenced date December 2009 Coord 42 36 8 N 23 17 21 E region BG display title Image Kominite.jpg thumb right Kominite Lang bg , meaning The Chimneys are several minor andesite peaks in Vitosha Mountain near Sofia , Bulgaria . They are situated in the upper valley of the Dragalevska River near Bay Krastyo tourist site. They are the nearest and most easy accessible climbing area near Sofia with climbing routes of II VIII UIAA and 50 100 m high. Easily accessible from Dragalevtsi via Bay Krastyo or Goli Vrah chair lift stations. Komini Peak on Livingston Island in the South Shetland Islands , Antarctica is named for Kominite. Category Landforms of Bulgaria Category Vitosha Bulgaria geo stub Climbing stub ... more details
Orphan date February 2009 The nihongo Setouchi Volcanic Belt SVB is a Miocene volcanic belt in southwestern Japan . ref http hakone.eri.u tokyo.ac.jp kazan Vol Vol.45.5 naka.txt Porphyritic Magnesian Andesites in the Setouchi Volcanic Belt Retrieved on 2007 07 08 Dead link date August 2011 ref References references External links http arjournals.annualreviews.org doi abs 10.1146 annurev.earth.34.031405.125014 High andesite in the Setouchi Volcanic Belt, southwestern Japan Japan geo stub coord missing Japan Category Volcanic belts Category Volcanoes of Japan ... more details
Tricouni Southwest is a term for a basaltic andesite lava flow in the Mount Cayley volcanic field of the Garibaldi Volcanic Belt in southwestern British Columbia , Canada , located south of Tricouni Peak . ref http gsc.nrcan.gc.ca volcanoes cat volcano e.php?id gvb tsw 047 Catalogue of Canadian volcanoes Tricounti Southwest ref See also Portal Volcanism of Canada Volcanism of Canada Volcanism of Western Canada References reflist coord missing British Columbia Garibaldi Volcanic Belt Category Holocene volcanism Category Mount Cayley volcanic field BritishColumbiaCoast geo stub ... more details
In igneous petrology an intermediate composition refers to the chemical composition of a rock that has 52 63 wt Silicon dioxide SiO sub 2 sub being an intermediate between felsic and mafic compositions. Typical intermediate rocks include andesite , dacite and trachyandesite among volcanic rocks and diorite and granodiorite among plutonic rocks ref Cite Web url http www.fiveyearpk.com category intermediate title Last 5 years paper work pakistan access date 25 may 2011 ref . References Reflist Igneous rocks Category geochemistry Category Igneous rocks Category Intermediate rocks petrology stub de Intermedi res Gestein et Keskmine kivim nl Intermediair gesteente ja pt Composi o interm dia sk Intermedi rna hornina ... more details
File Madarasi Hargita3.JPG right 250px thumb Harghita Mountains The Harghita Mountains in Hungarian language Hungarian Hargita, in Romanian language Romanian Mun ii Harghita is a volcanic mountain range of the C liman Harghita Mountains in Harghita County of Romania, part of the Inner Eastern Carpathians . The range is about 80 kilometers long and 20 kilometers wide, and is the largest andesite mass and the largest volcanic body in the whole of Europe . ref Geology of the Carpathian Region, G.Z. F ldvary, 1988, page 223 ref Its tallest peak is Hargita Madarasi Hargita , 1801 metres . References reflist coord 46 15 N 25 43 E type mountain source kolossus huwiki display title Category Mountain ranges of Romania Category Mountain ranges of the Eastern Carpathians cs Harghita poho hu Hargita hegys g ro Mun ii Harghita ... more details
Image Bubbles hires.jpg thumb 200px Carbon dioxide escaping from the volcano crater. Northwest Rota is an active submarine volcano located in the Pacific , about 64 km northwest of Rota Virgin Island and 100 km north of Guam . The volcano has been discovered during the expedition of NOAA in 2003 . It consists mainly basalt and andesite, and its peak is 517 m below sea level. Active crater was named Brimstone Pit, located on the southern slope of about 40 m below the summit. coord 14 36 04 N 144 46 30 E source kolossus frwiki display title Category Active volcanoes cs Northwest Rota fr Northwest Rota 1 sk Northwest Rota ... more details
Painted Peak is a summit topography peak rising from the north part of Russet Hills in the Gallipoli Heights , Freyberg Mountains . Descriptively named by the New Zealand Antarctic Place Names Committee NZ APC on the proposal of P.J. Oliver , New Zealand Antarctic Research Program NZARP geologist who studied the feature, 1981 82. Ignimbrite and dacite breccia cut by dikes of andesite and dacite give the peak many colors. usgs gazetteer coord 72 27 S 163 45 E display title Category Mountains of Victoria Land Category Pennell Coast VictoriaLand geo stub ... more details
Mount Tavkvetili lang ka is a volcanic mountain in the northern part of the Abul Samsari Range in Georgia country Southern Georgia . The elevation of the mountain is convert 2583 m above sea level. The mountain has the shape of a decapitated cone and is composed of young andesite andesitic and andesitic dacitic lavas. The lower slopes of Mount Tavkvetili are covered by subalpine meadows while the upper slopes are covered by alpine meadows. References Georgian State Soviet Encyclopedia. 1979. Book 4. p. 569. coord missing Georgia country Category Mountains of Georgia country Tavkvetili, Mount Category Volcanoes of Georgia country Tavkvetili, Mount ka ... more details
Infobox mountain name Castle Peak photo Castle Peak from Andesite Peak.jpg photo caption Castle Peak from Andesite Peak elevation ft 9109 elevation ref NAVD88 ref name ngs cite ngs id KS2001 designation Castle Peak accessdate 2009 07 04 ref prominence listing Sierra Peaks Section List ref name SPS cite sps accessdate 2009 07 04 ref location Nevada County, California Nevada County , California , United States USA range Sierra Nevada U.S. Sierra Nevada coordinates coord 39.365485408 120.349175794 format dms region US CA type mountain source ngs display inline,title coordinates ref ref name ngs topo United States Geological Survey USGS Norden type age first ascent easiest route Exposed scramble Yosemite Decimal System YDS class 3 ref name SPS Castle Peak is a mountain in California s Sierra Nevada U.S. Sierra Nevada near I 80, Donner Pass, and the Nevada border. It is in the Tahoe National Forest ref name pb cite peakbagger pid 2551 name Castle Peak, California accessdate 2009 12 18 ref not far off the Pacific Crest Trail , and adjacent to Castle Pass. It was originally named Mount Stanford by the California Geological Survey Whitney Survey of 1860 74. File Summit view east .JPG thumb left 240px View of Castle Peak Summit at terminus of Castle Peak Summit Trail clear left References reflist External links cite gnis id 258063 name Castle Peak accessdate 2009 12 18 cite summitpost id 152352 name Castle Peak cite web url http www.trailspotting.com 2007 10 castle peak.html title Castle Peak Trail publisher Trailspotting accessdate 2009 12 18 Category Landforms of Nevada County, California Category Mountains of the Sierra Nevada U.S. NevadaCountyCA geo stub ... more details
Infobox Australian place type suburb name Taylor city Canberra state act image Taylor ACT.jpg lga Gungahlin est 1991 postcode 2913 pop near nw near n near ne near w near e Moncrieff, Australian Capital Territory Moncrieff near sw Casey, Australian Capital Territory Casey near se Ngunnawal, Australian Capital Territory Ngunnawal near s Ngunnawal, Australian Capital Territory Ngunnawal Taylor is a designated suburb in Gungahlin district Gungahlin , Canberra though the first land release is yet to be announced. The suburb is named after magazine publisher Florence Mary Taylor Florence Taylor OBE , who was editor of and writer for several Australian building industry journals including the influential Building magazine. The suburb is approximately 4 km from the Gungahlin Gungahlin Town Centre and 16 km from the centre of Canberra and bounded by Horse Park Drive. The suburb is located in north Gungahlin adjacent to the existing suburb of Ngunnawal, Australian Capital Territory Ngunnawal and the future suburbs of Casey, Australian Capital Territory Casey and Moncrieff, Australian Capital Territory Moncrieff . History Until 1991, the suburb Taylor was part of the former Gold Creek a 1,594 hectare rural property with the Gold Creek Homestead, Australian Capital Territory Gold Creek Homestead at its centre. ref Newman Chris 2004 , Gold Creek, Reflections of Canberra s Rural Heritage , Gold Creek Homestead Working Group. ref Geology The rocks in Taylor are from the late middle Silurian period. Hawkins volcanics green grey dacite and quartz andesite are in the west. The Canberra Formation is separated by a fault in the east side. It consists of slate y shale and mudstone , with north east trending bands of acid volcanics dacite and andesite . References reflist 1 refbegin See also Geology of the Australian Capital Territory coord 35.162 149.100 region AU type city source GNS enwiki format dms display title Category Suburbs of Canberra Canberra geo stub ... more details
The Pylon Assemblage is an accreted terrane of igneous rock s in southwestern British Columbia , Canada , located about nowrap Convert 150 km mi abbr on north of Vancouver . It is named after Pylon Peak , a subsidiary summit of the Mount Meager massif . Two units make up the Pylon Assemblage, although the youngest unit comprises nearly 100 of the assemblage. ref name KB cite journal last1 Read first1 Peter B. year 1990 title Mount Meager Complex, Garibaldi Belt, Southwestern British Columbia journal Articles volume 17 issue 3 page 168 publisher Geological Association of Canada issn 1911 4850 accessdate 2011 10 22 ref On the southern flank of Pylon Peak, the oldest unit consists of andesite andesitic lava flows. It locally overlies The Devastator Assemblage and older basal breccia . Porphyritic plagioclase andesite of the youngest unit underlies much of the southern and western portions of Meager. Devastator Peak , a volcanic plug at the southern end of the Meager massif, was the source for these lava flows between 1,000,000 and 500,000 years ago. The Pylon Assemblage represents the largest geological formation comprising Meager. ref name KB See also Mosaic Assemblage Job Assemblage Capricorn Assemblage Plinth Assemblage Volcanism of Western Canada List of Cascade volcanoes List of volcanoes in Canada References reflist BritishColumbia geo stub Canada geology stub coord missing British Columbia Category Mount Meager Category Volcanism of British Columbia Category Geologic formations of British Columbia ... more details
Infobox mountain name Cerro Volc nico photo photo caption elevation m 1930 elevation ref prominence location Argentina range Andes coordinates coord 41 19 S 71 50 W type mountain region AR topo type Cinder cone age Holocene ? last eruption 70,000 14,000 yrs ago first ascent easiest route Cerro Volc nico also known as Fonck is a cinder cone in Argentina , located southeast of the massive stratovolcano of Tronador . The cone produced a single andesite lava flow , which has been bracketed in age between 70,000 and 14,000 years ago. Source cite gvp vnum 1508 011 title Tronador See also List of volcanoes in Argentina El Bols n, R o Negro ICAO SAVB , El Bols n airport DEFAULTSORT Volcanico, Cerro Category Cinder cones Category Geography of R o Negro Province Category Subduction volcanoes Category Mountains of Argentina Category Volcanoes of Argentina Argentina geo stub it Cerro Volc nico ka ... more details
Unreferenced date December 2009 Orphan date December 2009 Image Paliokastro.jpg thumb right The Acropolis Palaiokastro in Methana Image Paliokastro methana.jpg thumb right Acropolis of ancient Methana is located 1 km from the town of Megalochori Methana , Greece Megalochori in the volcanic peninsula of Methana . It was first built in the Mycenean civilization Mycenean times . It was rebuilt and destroyed later during the Roman Empire Roman and the Byzantine Empire Byzantine times. It was built from andesite and dacite rocks from the volcanic mountain nearby. The small acropolis is located on a small lava dome . Around the acropolis, Pausanias described the ancient market Agor and a sanctuary of Isis and Hermes . Remains of the ancient town Methana can be found around the Paliocastro and some Roman columns in front of the little St. Niclaus chapel. Category Ancient Greek buildings and structures Category Troizina area Greece geo stub ... more details
Infobox mountain name Kebeney photo photo caption elevation m 1,527 elevation ref prominence location Kamchatka Peninsula Kamchatka , Russia range Sredinny Range coordinates coord 57.10 N 159.93 E type mountain topo type Shield volcano age last eruption Unknown first ascent easiest route Kebeney lang ru is a shield volcano located in central Sredinny Range , in the northern part of the Kamchatka Peninsula , Russia . It is a basalt ic Andesite andesidic shield volcano with a number of cinder cone s on its flanks, aligned along the Sredinny Range NE SW axis. See also List of volcanoes in Russia References cite gvp vnum 1000 50 title Kebeney Category Mountains of Russia Category Volcanoes of Kamchatka Category Shield volcanoes KamchatkaKrai geo stub nl Kebenej nn Kebenej ru sk Kebenej zh ... more details
Use mdy dates date October 2011 Mount Bozgush , Bozqush or Bozqush Kuh is a Convert 3306 m ft 0 ref National Geographic Society 2005 National Geographic Atlas of the World 8th ed. Washington, DC, ISBN 0 7922 7542 X ref volcanic mountain Convert 20 km mi 1 abbr on south of Sarab and north of Mianeh , East Azarbaijan Province , Iran. Tulips are cultivated on the rich volcanic soil of Mount Bozgush, and medicinal herbs such as pennyroyal , thyme , borage , nettle and liquorice grow wild on the mountain s slopes. Mount Bozgush is a stratovolcano composed mostly of andesite . Notes nowiki See http en.wikipedia.org wiki Wikipedia Footnotes for an explanation of how to generate footnotes using the ref and ref tags. nowiki div class references small style moz column count 1 column count 1 references div coord missing Iran DEFAULTSORT Bozgush Category Stratovolcanoes Bozgush Category Volcanoes of Iran Bozgush Category Mountains of Iran Bozgush EastAzarbaijan geo stub fa ... more details
MarsGeo name Barnacle Bill image Image Sojourner and Barnacle Bill.jpg 200px caption Sojourner Rover next to the Rock Barnacle Bill type Rock latitude 19.33 N or S N longitude 33.55 E or W W Barnacle Bill is a convert 40 cm in adj on rock on Mars in Ares Vallis . It was the first rock on Mars analyzed by the Sojourner rover Sojourner rover using its APXS Alpha Proton X ray Spectrometer . The encounter occurred during Timekeeping on Mars Sols Sol 3 of the Mars Pathfinder mission on the surface of Mars and took ten hours to complete. Early analysis of data sent from Sojourner led scientists to speculate that the rock was andesite . The name was inspired in mission scientists by barnacle like structures on the rock that appeared in transmitted photos. See also List of rocks on Mars External links http mars.jpl.nasa.gov MPF science mineralogy.html Mars Pathfinder Science Results Category Rocks on Mars Category Mars Pathfinder Mars stub crater stub pt Barnacle Bill rocha marciana ... more details
Son is a town in Son District, Veraguas , Panama . coord 8 01 N 81 19 W display title region PA type city source GNS enwiki Sona city is located in Panama. It has been intermittently exploited by Artisanal mining artisanal placer gold operations since Spanish colonial times. In the 1990s, Cyprus Minerals conducted stream sediment, soil and rock sampling on Sona. This work defined a 200 m by 300 m gold anomaly in soils, with assays up to 4.40 g t Au. Oro Gold s work has confirmed the soil anomaly, with rock chip results up to 4.05 g t Au. All three new anomalies are located outside the soil anomaly identified by Cyprus. Mapping shows the property is underlain by granodiorite to monzonite intrusive rocks with andesite flows and tuff s. Category Populated places in Panama panama geo stub ... more details
Encyclopedia
top
