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	Ascraeus Mons - Wikipedia, the free encyclopedia
		Ascraeus Mons is the northernmost of three volcanos (collectively known as Tharsis Montes) on the Tharsis bulge near the equator of the planet Mars.
		To its south is Pavonis Mons, and south of that is Arsia Mons.
		Ascraeus Mons is considered to be one of the tallest volcanoes on Mars.
	en.wikipedia.org /wiki/Ascraeus_Mons (97 words)

	Martian Volcanoes
		Located on its northwest flank are three large shield volcanoes: Ascraeus Mons, Pavonis Mons and Arsia Mons.
		It is 24 kilometers (15 miles) high, 550 kilometers (340 miles) in diameter and is rimmed by a 6 kilometers (4 miles) high scarp.
		The caldera on Arsia Mons is considerably larger than the calderas on either Ascraeus Mons or Pavonis Mons.
	www.solarviews.com /eng/marsvolc.htm (2530 words)

	Journal of the Geological Society: Cyclical summit collapse events at Ascraeus Mons, Mars
		We re-interpret the sequence in which caldera collapse events took place at the Martian shield volcano Ascraeus Mons and argue that the formation of the central caldera, usually accepted to be the most recent, was followed by two further collapse events.
		This challenges the current hypothesis for Ascraeus Mons that successive magma reservoirs have increased in size as this volcano matured and that a reservoir occupied a central location within the volcano only at the end of its active lifespan.
		On Earth, summit calderas are thought to form during evacuation of magma from an underlying shallow reservoir, either by magma withdrawal to depth, emplacement as an intrusion, or eruption at the surface (Lipman 1984) and we assume that the same processes are responsible for the formation of the martian calderas.
	www.findarticles.com /p/articles/mi_qa3721/is_200011/ai_n8907168 (1165 words)

	Volcano - Wikipedia, the free encyclopedia
		The largest lava shield on Earth, Mauna Loa, is 9,000 m tall (it sits on the sea floor), 120 km in diameter and forms part of the Island of Hawai'i.
		Olympus Mons is a shield volcano on Mars, and the tallest mountain in the known solar system.
		Olympus Mons (Latin, "Mount Olympus") is the tallest known mountain in our solar system, located on the planet Mars.
	en.wikipedia.org /wiki/Volcano (3601 words)

	Active Volcanism On Mars
		The Tharsis Montes: Arsia, Pavonis and Ascraeus Mons.
		Arsia Mons, Pavonis Mons and Ascraeus Mons, are gigantic volcano triplets of a youthful age with evidence of recent volcanism (Hartmann et al., 1999).
		Thus, for the valley system on the southwest side of Ascraeus Mons, Crumpler et al., (1996) state: "pits, pit chanis, and flank channels interpreted as flank vents and lava channels." The present author is in agreement with the channels and ring-shaped features being the locus of volcanic extrusions.
	www.spacedaily.com /news/mars-volcano-01a1.html (1513 words)

	Comparing Earth and Mars
		Ascraeus Mons is at the top of the trio of this particular volcano chain, following the Arsia and Parvonis Mons.
		All of the mons in the Tharsis Region appear to be shield volcanos because shield volcanos are low, broad, dome-shaped types of volcanos which are identical to the volcanos in the Tharsis Region.
		In both Olympus Mons and Tharsis Montes the lava flow that precedes the building of a volcano shows some definite similarities that occur when a volcano is formed in a formed in a divergent boundary.
	teachertech.rice.edu /Participants/dawsonm/Lessons/mars/marsproject.htm (6146 words)

	ipedia.com: Olympus Mons Article (Site not responding. Last check: 2007-10-21)
		Olympus Mons is an apparently extinct shield volcano, the result of highly fluid magma flowing out of volcanic vents over a long period of time, and is much wider than it is tall; the average slope of Olympus Mons' flanks is very gradual.
		The volcano is surrounded by a region known as the Olympus Mons Aureole (Latin, "Circle of Light") with gigantic ridges and blocks extending 1000km (621 miles) from the summit that show evidence of development and resurfaing connected with glacial activity.
		Olympus Mons is located in the Tharsis bulge, a huge swelling in the Martian surface that bears numerous other large volcanic features.
	www.ipedia.com /olympus_mons.html (469 words)

	GEO_PLATE_P-6.HTML (Site not responding. Last check: 2007-10-21)
		Other members of the Tharsis volcanic province, (Figure P-6.1, from bottom: Arsia Mons, Pavonis Mons, and Ascraeus Mons) are similarly large compared to terrestrial counterparts; Ascraeus Mons, for example, covers about the same area as the basaltic Columbia Plateau, formed by many fissure eruptions.
		The morphology of Olympus Mons is typical of basaltic shield volcanoes:; a broad upward-convex construct similar to terrestrial examples such as Mauna Loa except for its size.
		Northwest and north of Olympus Mons is a large aureole of ridged terrain (Figure P-6.3).
	daac.gsfc.nasa.gov /geomorphology/GEO_10/GEO_PLATE_P-6.HTML (938 words)

	Martian Volcanoes on HST Images (Site not responding. Last check: 2007-10-21)
		Bottom inset is an image of Elysium Mons taken by the Viking Orbiter- I spacecraft during the Viking Space Mission to Marts during the period from July 1976 throughout November 1982.
		To illustrate that the HST image of the apparent volcano Elysium Mons Figure 1, bottom inset, reveals the volcano as seen from the U.S. Viking Space Mission to Mars during the period from July 1976 throughout November 1982.
		Ascraeus Mons and Pavonis Mons have steeper slopes and may be revealed in HST images in the next apparitions of Mars.
	www.lpl.arizona.edu /~rhill/alpo/marstuff/VOLCANO.htm (584 words)

	The Biggest Volcanoes - Mars-Earth Wars
		That of Ascraeus Mons is estimated at 24 miles.
		Arsia Mons is estimated at 40,000 feet, as is Pavonis Mons.
		Ascraeus Mons, Arsia Mons and Pavonis Mons also were contributing vents, as were a dozen lesser volcanoes.
	www.creationism.org /patten/PattenMarsEarthWars/PattenMEW04.htm (3878 words)

	Erosional Valley Systems Across The Tharsis Montes
		The Northeast segment of Arsia Mons as shown in figure 3 is a segment that differs considerably from the SW segment in having one advanced valley system and extending into the caldera.
		Hartmann et al., concluded that the youngest surfaces they detected on Arsia Mons were 40-100 million years and extrapolating their results for Pavonis Mons the age of the valley floor and thus the age of the latest erosive event there is very recent and must be well within 10 million years.
		There are striking similarities between the southwest segment of Ascraeus Mons and the northeast segment of Arsia Mons.
	www.spacedaily.com /news/mars-volcano-01a2.html (1702 words)

	Ascraeus Mons in 3D
		This 3D image shows a portion of the southern flank of Ascraeus Mons, the northernmost volcano of the Tharsis volcano group.
		The peculiar depressions which can be observed here, and on several Martian volcanoes, are so-called 'lava tubes'.
		This colour image shows a larger portion of the southern flank of Ascraeus Mons.
	www.eurekalert.org /pub_releases/2004-03/esa-ami032204.php (270 words)

	MARS-Volcanoes (Site not responding. Last check: 2007-10-21)
		Multiple collapse craters at the top of the volcano, and different age lava flows down the flank show that the eruptions that produced the mountain took place over a long period, perhaps several hundred million years.
		he summit crater of Ascraeus Mons shows several generations of faulting and collapse from the upwelling and subsidence of magma beneath the crust.
		Like Olympus Mons, this volcano rises 27 kilometers (16 miles) above the average surface level of Mars, and it has blanketed surrounding terrain with lava flows.
	www.hrw.com /science/si-science/physical/astronomy/ss/mars/surface/volcanoes.html (147 words)

	Ascraeus Mons (Site not responding. Last check: 2007-10-21)
		Ascraeus Mons is one of the three giant shield volcanoes known as the "Tharsis Montes".
		Based on Viking-era observations, Ascraeus Mons is considered to be one of the tallest volcanoes on Mars.
		This is an iron- and magnesium- rich silicate lava that, when cooled, is usually fl or very dark brown.
	www.dartmouth.edu /~humbio01/interactive/ascraeus.html (83 words)

	Catalog Page for PIA01431
		This high-resolution view shows some of the lava flows near the summit of Ascraeus Mons, one of the three giant shield volcanoes known as the "Tharsis Montes".
		The rough-surfaced flow across the lower half of the MOC image is interpreted to be an "aa" lava flow, and the smoother surface with a sinuous channel running down its center is interpreted to be a "pahoehoe" lava flow.
		Both would indicate that the lavas on Ascraeus Mons, at least at this location, are probably composed of basalt.
	photojournal.jpl.nasa.gov /catalog/PIA01431 (779 words)

	The Volcanoes of Mars
		Each of these Tharsis volcanoes is 700km apart and they all reach almost to the height of Olympus Mons at about 25000m but they are not as tall because they stand on Tharsis which itself is 10km high.
		The flanks of Elysium Mons are steeper at about 10 degrees suggesting that the lava was more chemically evolved when it came to the surface.
		Elysium Mons possesses a single caldera and several large channels to the North West, possibly carved by flowing mud and water released by the heat of an eruption.
	www.chm.bris.ac.uk /webprojects1997/JoeA/welcome.htm (1558 words)

	Formation and Evolution of Erosional Valley Systems
		For Pavonis Mons the advanced segment is on the northeast side while the less developed segment is on the southwest side.
		For Ascraeus Mons the advanced erosional valley system is on the southwest side whereas the northeast system is poorly developed.
		By way of extrapolation results of age dating of Arsia Mons, where lava fields as recent as 40-100 million year old were detected (Hartmann et al., 1999), it is concluded that the northeast erosional valley at Pavonis Mons must be well within 10 million years considering remnant denudation.
	www.spacedaily.com /news/mars-volcano-01a3.html (2387 words)

	Catalog Page for PIA07149
		This red wide angle Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows Ascraeus Mons, the northernmost of the three Tharsis Montes shield volcanoes.
		Ascraeus Mons is about 460 km (~286 mi) across and its summit is at an elevation of about 18 km (11 mi) above the martian datum -- the elevation designated as 0 km.
		The center of the summit caldera is near 11°N, 104°W. Sunlight illuminates the scene from the left/upper left.
	photojournal.jpl.nasa.gov /catalog/PIA07149 (95 words)

	Ascraeus Mons :: Mars Astrobiology Magazine :: Search for Life on Mars
		Summary: Today's images from Mars include: Ascraeus Mons and Overlapping Flows (Released 23 December 2004), from the Mars Global Surveyor and 2001 Mars Odyssey spacecrafts.
		Toward the top of the image a set of dark-toned overlapping flows can be identified by the darker margins where dust/sand has been trapped against the flow margin.
		The name "2001 Mars Odyssey" was selected as a tribute to the vision and spirit of space exploration as embodied in the works of renowned science fiction author Arthur C. Clarke.
	mars.astrobio.net /news/article638.html (429 words)

	Mars Odyssey Mission THEMIS: Image of the Day (Site not responding. Last check: 2007-10-21)
		As the volatiles leave, the weight of the surrounding rock causes collapse pits to form.
		These collapse pits are found on the flank of Ascraeus Mons.
		Ascraeus Mons Collapse Pits (Released 16 November 2004)
	themis.la.asu.edu /zoom-20041116A.html (238 words)

	[No title]
		The two brown, circular objects on the left side of the image are Pavonis Mons and Ascraeus Mons, two of the large shield volcanos in the Tharsis region (see slides #10 and #11).
		Olympus Mons is the volcano at upper left, and a portion of Valles Marineris is on the right.
		Elysium Mons: This volcano sits on an uplifted part of the crust similar to Tharsis.
	www.physics.vanderbilt.edu /astrocourses/AST102/readings/mars_bigpicture.html (1527 words)

	Olympus Mons (Site not responding. Last check: 2007-10-21)
		The scale of Olympus Mons is almost incomprehensible.
		The base of Olympus Mons is ringed by cliffs that are as high as six kilometres in some places.
		Although we have no rock samples from Olympus Mons, all the indications are that it is a basaltic volcano.
	ve.ou.edu /weaver/votw/oly_mons.htm (493 words)

	SPACE.com -- Mars Odyssey's Picture of the Day: Pavonis Mons (Site not responding. Last check: 2007-10-21)
		Three of the Tharsis volcanoes, Ascraeus Mons, Pavonis Mons, and Arsia Mons, are aligned along a NE - SW trend, with Pavonis in the middle, straddling the equator.
		Olympus Mons, the fourth Tharsis volcano and the largest in the solar system, is located NW of Pavonis Mons.
		This image of Pavonis Mons also demonstrates some of the distinctive characteristics of the martian surface in the Tharsis region.
	www.space.com /scienceastronomy/solarsystem/mars_daily_020507.html (583 words)

	Pavonis Mons, Mars (Site not responding. Last check: 2007-10-21)
		The circular caldera portrays only a single collapse event, in contrast to the complex caldera on Ascraeus Mons, but it is possible that smaller collapses preceded the last event and were completely eliminated during the formation of the present caldera.
		A large portion of the summit of Pavonis Mons has undergone subsidence that did not result in the formation of a caldera; the ridge to the northeast of the caldera marks the edge of the zone of subsidence.
		The small white features west of the caldera have been interpreted to be dust clouds generated by relatively strong winds blowing downslope on the volcano.
	volcano.und.nodak.edu /vwdocs/planet_volcano/svol_S07.html (121 words)

	Mars at Opposition (Site not responding. Last check: 2007-10-21)
		A crescent-shaped cloud just right of center identifies the immense shield volcano Olympus Mons, which is 550 kilometers across at its base.
		Farther to the east (right) a line of clouds forms over a row of three extinct volcanoes which are from north to south: Ascraeus Mons, Pavonis Mons, Arsia Mons.
		The 26-kilometer-high volcano Ascraeus Mons pokes through the cloud deck along the western (left) limb of the planet.
	geosun1.sjsu.edu /~baesi/TRG/mars/views/MARS3.HTM (362 words)

	Tharsis (Site not responding. Last check: 2007-10-21)
		The gigantic mountain to the northwest is Olympus Mons.
		At its summit, Olympus Mons has a caldera, which is a basin-shaped depression that is nearly ten miles across.
		The images of the Tharsis mountain range and Olympus Mons came from Martian Volcanoes, which is part of an introduction to Mars at the Los Alamos National Laboratory (LANL) Web site Views of the Solar System.
	observe.arc.nasa.gov /nasa/ootw/1997/ootw_970101/tharsis.html (136 words)

	A Trip Into Space (Site not responding. Last check: 2007-10-21)
		At left, from top to bottom, are the three 25 km high volcanic shields, Ascraeus Mons, Pavonis Mons, and Arsia Mons.
		The distance between the calderas of Ascraeus and Pavonis Mons is 800 km.
		The images used to produce this mosaic were taken during orbit 1334 on 22 February 1980.
	www.vias.org /spacetrip/mars_tharsis.html (126 words)

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