Valles Marineris - Revision history

Suitupshowup: /* Overview */

2023-09-02T15:48:27Z

Overview

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	[[File:ESP 013784 1710Valles Marineriswide.jpg\|thumb\|300px\|left\|Layers in south wall of Valles Marineris Wall shows many layers; some are from lava flows.]]		[[File:ESP 013784 1710Valles Marineriswide.jpg\|thumb\|300px\|left\|Layers in south wall of Valles Marineris Wall shows many layers; some are from lava flows.]]

	[[File:ESP 013784 1710Valles Marineriscolors.jpg\|thumb\|300px\|right\|Color image of part of south wall of Valles Marineris, as seen by HiRISE. ]]		[[File:ESP 013784 1710Valles Marineriscolors.jpg\|thumb\|300px\|right\|Color image of part of south wall of Valles Marineris, as seen by HiRISE. Different minerals produce different colors.]]

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.

Suitupshowup: /* Overview */ added image

2023-09-02T15:46:58Z

Overview: added image

← Older revision		Revision as of 16:46, 2 September 2023
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	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

	[[File:ESP 013784 1710Valles Marineriscolors.jpg\|thumb\|~~300~~\|~~left~~\|Color image of part of south wall of Valles Marineris, as seen by HiRISE~~. The different colors are due to different minerals in the rocks~~.]]		[[File:ESP 013784 1710Valles Marineriswide.jpg\|thumb\|300px\|left\|Layers in south wall of Valles Marineris Wall shows many layers; some are from lava flows.]]

			[[File:ESP 013784 1710Valles Marineriscolors.jpg\|thumb\|300px\|right\|Color image of part of south wall of Valles Marineris, as seen by HiRISE. ]]

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.

Suitupshowup: /* Overview */ added image

2023-09-02T15:41:31Z

Overview: added image

← Older revision		Revision as of 16:41, 2 September 2023
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	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

			[[File:ESP 013784 1710Valles Marineriscolors.jpg\|thumb\|300\|left\|Color image of part of south wall of Valles Marineris, as seen by HiRISE. The different colors are due to different minerals in the rocks.]]
	Color image of part of south wall of Valles Marineris, as seen by HiRISE. ~~The wall shows many layers, some are from lava flows.~~ The different colors are due to different minerals in the rocks.

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.

Suitupshowup: /* Overview */

2023-09-02T15:39:45Z

Overview

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	[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]		[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]
	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]


			Color image of part of south wall of Valles Marineris, as seen by HiRISE. The wall shows many layers, some are from lava flows. The different colors are due to different minerals in the rocks.

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.

RichardWSmith: /* Overview */ thought to have formed at same times as the Tharsis bulge.

2022-11-29T18:47:55Z

Overview: thought to have formed at same times as the Tharsis bulge.

← Older revision		Revision as of 19:47, 29 November 2022
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	==Overview==		==Overview==
	Valles Marineris (latin for ''Mariner Valleys'') was named after the [[Mariner 9]] orbiter (1971-72) which made the discovery. "Chasma" has been designated by the International Astronomical Union to refer to an elongate, steep-sided depression. [[Candor Chasma]] is one of the largest canyons that exist in the system.		Valles Marineris (latin for ''Mariner Valleys'') was named after the [[Mariner 9]] orbiter (1971-72) which made the discovery. "Chasma" has been designated by the International Astronomical Union to refer to an elongate, steep-sided depression. [[Candor Chasma]] is one of the largest canyons that exist in the system. If placed on the USA, it would reach from New York to Los Angeles.

	Valles Marineris is the largest canyon system in the solar system. The name for the whole system of canyons is Valles Marineris. Starting at the west with [[Noctis Labyrinthus]] in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle. The walls of the canyons often contain many layers. The floors of some of the canyons contain large deposits of layered materials. Some researchers believe that the layers were formed when water once filled the canyons.<ref>Cabrol, N. and E. Grin (eds.). 2010. Lakes on Mars. Elsevier. NY</ref> <ref>McCauley, J. 1978. Geologic map of the Coprates quadrangle of Mars. U.S. Geol. Misc. Inv. Map I-897</ref> <ref> Nedell \| first1 = S. \| display-authors = etal \| year = 1987 \| title = Origin and evolution of the layered deposits in the Valles Marineris, Mars \| url = \| journal = Icarus \| volume = 70 \| issue = \| pages = 409–441 </ref> <ref>Weitz, C. and T. Parker. 2000. New evidence that the Valles Marineris interior deposits formed in standing bodies of water. LPSC XXXI. Abstract 1693</ref>		Valles Marineris is the largest canyon system in the solar system. The name for the whole system of canyons is Valles Marineris. Starting at the west with [[Noctis Labyrinthus]] in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle. The walls of the canyons often contain many layers. The floors of some of the canyons contain large deposits of layered materials. Some researchers believe that the layers were formed when water once filled the canyons.<ref>Cabrol, N. and E. Grin (eds.). 2010. Lakes on Mars. Elsevier. NY</ref> <ref>McCauley, J. 1978. Geologic map of the Coprates quadrangle of Mars. U.S. Geol. Misc. Inv. Map I-897</ref> <ref> Nedell \| first1 = S. \| display-authors = etal \| year = 1987 \| title = Origin and evolution of the layered deposits in the Valles Marineris, Mars \| url = \| journal = Icarus \| volume = 70 \| issue = \| pages = 409–441 </ref> <ref>Weitz, C. and T. Parker. 2000. New evidence that the Valles Marineris interior deposits formed in standing bodies of water. LPSC XXXI. Abstract 1693</ref>
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	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref>		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref> It is thought to have formed within 1 billion years of Mars' formation, when the Tharsis igneous province was active.

	Note that the canyon is so wide, that if you were in the centre of the canyon, both walls would be invisible, below the horizon.		Note that the canyon is so wide, that if you were in the centre of the canyon, both walls would be invisible, below the horizon.

RichardWSmith: /* Overview */ Ref, Rift Valley.

2022-11-29T18:44:03Z

Overview: Ref, Rift Valley.

← Older revision		Revision as of 19:44, 29 November 2022
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	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

	It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.		It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.<ref>https://themis.asu.edu/vallesspecial</ref>

	Note that the canyon is so wide, that if you were in the centre of the canyon, both walls would be invisible, below the horizon.		Note that the canyon is so wide, that if you were in the centre of the canyon, both walls would be invisible, below the horizon.

RichardWSmith: /* Possible habitat location */ Added reference.

2022-11-29T18:43:26Z

Possible habitat location: Added reference.

← Older revision		Revision as of 19:43, 29 November 2022
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	The floor of Valles Marineris is low enough that air pressure is significantly higher than at the rim. If a colony was built close to the north wall, the wall would provide good radiation protection from [[Cosmic rays]] since the wall blocks about half the sky. Further, the thicker air would provide protection from solar radiation.		The floor of Valles Marineris is low enough that air pressure is significantly higher than at the rim. If a colony was built close to the north wall, the wall would provide good radiation protection from [[Cosmic rays]] since the wall blocks about half the sky. Further, the thicker air would provide protection from solar radiation.

	Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.<ref>https://www.universetoday.com/153778/the-bottom-of-valles-marineris-seems-to-have-water-mixed-in-with-the-regolith/</ref>		Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.<ref>https://www.universetoday.com/153778/the-bottom-of-valles-marineris-seems-to-have-water-mixed-in-with-the-regolith/</ref><ref>https://www.humanmars.net/2021/12/map-of-shallow-subsurface-water-in.html</ref>

	Valles Marineris exists on the equator, so it will be one of the warmest areas on the planet. It is also one of the few equatorial sites where there is strong evidence of water, which makes it doubly attractive.		Valles Marineris exists on the equator, so it will be one of the warmest areas on the planet. It is also one of the few equatorial sites where there is strong evidence of water, which makes it doubly attractive.

RichardWSmith: /* Possible habitat location */ Added reference.

2022-11-29T18:40:09Z

Possible habitat location: Added reference.

← Older revision		Revision as of 19:40, 29 November 2022
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	The floor of Valles Marineris is low enough that air pressure is significantly higher than at the rim. If a colony was built close to the north wall, the wall would provide good radiation protection from [[Cosmic rays]] since the wall blocks about half the sky. Further, the thicker air would provide protection from solar radiation.		The floor of Valles Marineris is low enough that air pressure is significantly higher than at the rim. If a colony was built close to the north wall, the wall would provide good radiation protection from [[Cosmic rays]] since the wall blocks about half the sky. Further, the thicker air would provide protection from solar radiation.

	Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.		Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.<ref>https://www.universetoday.com/153778/the-bottom-of-valles-marineris-seems-to-have-water-mixed-in-with-the-regolith/</ref>

	Valles Marineris exists on the equator, so it will be one of the warmest areas on the planet. It is also one of the few equatorial sites where there is strong evidence of water, which makes it doubly attractive.		Valles Marineris exists on the equator, so it will be one of the warmest areas on the planet. It is also one of the few equatorial sites where there is strong evidence of water, which makes it doubly attractive.

RichardWSmith: /* Overview */ A Rift Valley, too wide to see both walls at once.

2022-11-29T18:38:37Z

Overview: A Rift Valley, too wide to see both walls at once.

← Older revision		Revision as of 19:38, 29 November 2022
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	[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]		[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]
	[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]		[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

			It is thought that this canyon was not carved with erosion, but rather that it is a Rift Valley.

			Note that the canyon is so wide, that if you were in the centre of the canyon, both walls would be invisible, below the horizon.

	==Possible habitat location==		==Possible habitat location==

RichardWSmith: On the equator.

2022-11-29T18:35:36Z

On the equator.

← Older revision		Revision as of 19:35, 29 November 2022
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	Valles Marineris is the largest canyon system in the solar system. The name for the whole system of canyons is Valles Marineris. Starting at the west with [[Noctis Labyrinthus]] in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle. The walls of the canyons often contain many layers. The floors of some of the canyons contain large deposits of layered materials. Some researchers believe that the layers were formed when water once filled the canyons.<ref>Cabrol, N. and E. Grin (eds.). 2010. Lakes on Mars. Elsevier. NY</ref> <ref>McCauley, J. 1978. Geologic map of the Coprates quadrangle of Mars. U.S. Geol. Misc. Inv. Map I-897</ref> <ref> Nedell \| first1 = S. \| display-authors = etal \| year = 1987 \| title = Origin and evolution of the layered deposits in the Valles Marineris, Mars \| url = \| journal = Icarus \| volume = 70 \| issue = \| pages = 409–441 </ref> <ref>Weitz, C. and T. Parker. 2000. New evidence that the Valles Marineris interior deposits formed in standing bodies of water. LPSC XXXI. Abstract 1693</ref>		Valles Marineris is the largest canyon system in the solar system. The name for the whole system of canyons is Valles Marineris. Starting at the west with [[Noctis Labyrinthus]] in the Phoenicis Lacus quadrangle, the canyon system ends in the Margaritifer Sinus quadrangle. The walls of the canyons often contain many layers. The floors of some of the canyons contain large deposits of layered materials. Some researchers believe that the layers were formed when water once filled the canyons.<ref>Cabrol, N. and E. Grin (eds.). 2010. Lakes on Mars. Elsevier. NY</ref> <ref>McCauley, J. 1978. Geologic map of the Coprates quadrangle of Mars. U.S. Geol. Misc. Inv. Map I-897</ref> <ref> Nedell \| first1 = S. \| display-authors = etal \| year = 1987 \| title = Origin and evolution of the layered deposits in the Valles Marineris, Mars \| url = \| journal = Icarus \| volume = 70 \| issue = \| pages = 409–441 </ref> <ref>Weitz, C. and T. Parker. 2000. New evidence that the Valles Marineris interior deposits formed in standing bodies of water. LPSC XXXI. Abstract 1693</ref>

			[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]
			[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]

	==Possible habitat location==		==Possible habitat location==
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	Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.		Ground fogs have been seen at dawn at the canyon floor, so it is certain that water exists close to the ground surface.

	For these reasons and others, several people have suggested that early colonies be built at this location.		Valles Marineris exists on the equator, so it will be one of the warmest areas on the planet. It is also one of the few equatorial sites where there is strong evidence of water, which makes it doubly attractive.

			For these reasons and others, several people have suggested that early colonies be built at this location.<ref>https://newatlas.com/great-places-to-live-mars/45654/</ref>

	==References:==		==References:==
	<references/>		<references/>

	~~[[Image: ESP 026997 1660 RED abrowse.jpg\|thumb\|300px\|left\|Layers in north wall of Valles Marineris]]~~
	~~[[Image: 26997layersclose.jpg\|thumb\|300px\|right\|Close view of layers in north wall of Valles Marineris]]~~

	==See Also==		==See Also==