Crater - Revision history

RichardWSmith: Added links to Chaotic Terrain and Tectonic Activity.

2021-03-24T09:24:04Z

Added links to Chaotic Terrain and Tectonic Activity.

Michel Lamontagne: /* References */

2020-11-16T16:36:25Z

References

Michel Lamontagne at 16:35, 16 November 2020

2020-11-16T16:35:03Z

Michel Lamontagne at 00:41, 10 November 2020

2020-11-10T00:41:19Z

Michel Lamontagne at 22:23, 9 November 2020

2020-11-09T22:23:42Z

Michel Lamontagne: /* Meteorite Impact */

2020-11-09T22:22:19Z

Meteorite Impact

Michel Lamontagne at 22:17, 9 November 2020

2020-11-09T22:17:23Z

Jburk at 21:56, 17 December 2018

2018-12-17T21:56:49Z

Laertes: interlink

2008-12-05T02:34:07Z

interlink

Rfc: typo

2007-12-08T08:57:44Z

typo

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 The [[w:Martian_dichotomy|Martian dichotomy]], between the old south and the new north has also been attributed to an immense impact crater early in the life of the planet.  An alternative cause might be convective currents in the Early Martian Crust, causing an effect similar to the supercontinents that have existed on Earth through plate tectonics.  The cooling of Mars would have interrupted these currents leaving a single supercontinent and a single ocean on Mars.
 ==Volcanic Activity==
-Although tectonic activity on Mars is widely believed to be intermittent at best, evidence of it's volcanic past is evident in the many [[volcano]] craters littering the surface. The largest volcano caldera is the famous [[Olympus Mons]], the largest known volcano in the [[Solar System]].
+Although [[Tectonic]] activity on Mars is widely believed to be intermittent at best, evidence of it's volcanic past is evident in the many [[volcano]] craters littering the surface. The largest volcano caldera is the famous [[Olympus Mons]], the largest known volcano in the [[Solar System]].
 ==Ore resources==

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 Although tectonic activity on Mars is widely believed to be intermittent at best, evidence of it's volcanic past is evident in the many [[volcano]] craters littering the surface. The largest volcano caldera is the famous [[Olympus Mons]], the largest known volcano in the [[Solar System]].
-== Ore resources ==
+==Ore resources==
-On Earth, as probably on Mars, impact craters may be associated with areas of concentrated minerals.  Large impact craters may leave the surface of the planet in a molten state for thousands of years.  Heavier elements in the molten magma may separate out and sink to the bottom of the slowly cooling magma.  Hot magma from a meteoritic impact may also evaporate some minerals, or favorize dilution in water, than can then rise to the surface and vent creating hot hydrothermal vents where minerals may concentrate.  Similar vents may exist near vocanoes.
+On Earth, as probably on Mars, impact craters may be associated with areas of concentrated minerals<ref>https://en.wikipedia.org/wiki/Ore_resources_on_Mars</ref>.  Large impact craters may leave the surface of the planet in a molten state for thousands of years.  Heavier elements in the molten magma may separate out and sink to the bottom of the slowly cooling magma.  Hot magma from a meteoritic impact may also evaporate some minerals, or favorize dilution in water, than can then rise to the surface and vent , creating hot hydrothermal vents where minerals may concentrate.  Similar vents may exist near volcanoes.
 ==References==

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 Although tectonic activity on Mars is widely believed to be intermittent at best, evidence of it's volcanic past is evident in the many [[volcano]] craters littering the surface. The largest volcano caldera is the famous [[Olympus Mons]], the largest known volcano in the [[Solar System]].
-== References ==
+== Ore resources ==
 <references />
 [[category:Geologic Processes]]

← Older revision		Revision as of 00:41, 10 November 2020
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		+	{{Mars atlas}}
	In it's broadest sense, a '''crater''' is simply a circular depression in the surface of a planet. Generally, in [[solar system]] geology, craters are formed either by [[meteorites]] or [[tectonics\|volcanic activity]].		In it's broadest sense, a '''crater''' is simply a circular depression in the surface of a planet. Generally, in [[solar system]] geology, craters are formed either by [[meteorites]] or [[tectonics\|volcanic activity]].

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 In it's broadest sense, a '''crater''' is simply a circular depression in the surface of a planet. Generally, in [[solar system]] geology, craters are formed either by [[meteorites]] or [[tectonics|volcanic activity]].
 ==Meteorite Impact==
@@ Line 11: / Line 13: @@
 Although tectonic activity on Mars is widely believed to be intermittent at best, evidence of it's volcanic past is evident in the many [[volcano]] craters littering the surface. The largest volcano caldera is the famous [[Olympus Mons]], the largest known volcano in the [[Solar System]].
-===References===
+== References ==
 <references />
 [[category:Geologic Processes]]

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 Hyper-velocity objects impacting the [[Mars]] surface cause highly energetic impacts, ejecting rock, [[regolith|dust]] and gases into the atmosphere and surrounding landscape. Most of Mars' cratering by meteorites was caused during the [[Late Heavy Bombardment]] period of the [[Solar System]], over 3.9 billion years ago.<ref>[http://en.wikipedia.org/wiki/Hellas_Basin Hellas Basin on Wikipedia]</ref> A large meteorite impacted the Mars surface around this time, creating the obvious [[Hellas Basin]] in the southern hemisphere.
-The [[w:Martian_dichotomy|Martian dichotomy]], between the old south and the new north has been attributed to an immense impact crater early in the life of the planet.
+The [[w:Martian_dichotomy|Martian dichotomy]], between the old south and the new north has also been attributed to an immense impact crater early in the life of the planet.  An alternative cause might be convective currents in the Early Martian Crust, causing an effect similar to the supercontinents that have existed on Earth through plate tectonics.  The cooling of Mars would have interrupted these currents leaving a single supercontinent and a single ocean on Mars.
 ==Volcanic Activity==

← Older revision		Revision as of 21:56, 17 December 2018
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	<references/>		<references/>

−	[[category:~~geology]]~~	+	[[category:Geologic Processes]]
−	~~[[Category:Astronomical_Observations~~]]