Meteoric iron - Revision history

Jburk at 23:49, 17 December 2018

2018-12-17T23:49:39Z

Farred: correct word choice

2010-02-20T16:10:16Z

correct word choice

Frontiersman at 22:51, 19 February 2010

2010-02-19T22:51:16Z

Frontiersman: category isru

2010-02-19T22:50:49Z

category isru

Frontiersman: /* See also */

2010-02-19T22:38:06Z

Frontiersman: See also

2010-02-18T21:33:08Z

Frontiersman: how much

2010-02-18T07:51:42Z

how much

Rfc: link+, cat+

2010-02-17T21:09:05Z

link+, cat+

Frontiersman at 18:57, 17 February 2010

2010-02-17T18:57:26Z

Frontiersman: new article

2010-02-17T18:49:47Z

new article

New page

Given Mars' proximity to the asteroid belt and the long geological life of materials on its surface compared to Earth, meteoric iron will probably exist in significant abundance. The following questions on this probability need to be researched:

* How many asteroids cross Mars orbit vs. cross earth's orbit?
* Earth's larger cross-sectional area and gravity well draws a larger fraction of the nearby meteoroids to strike it than does Mars' gravity well. What is the numerical difference?
* Earth's atmosphere tends to stress stony meteoroids of less than about a hundred feet or so in diameter and more than some unknown diameter to the extent that they explode in the air and leave no trace but dust on the ground but slows 100 foot diameter iron meteoroids so they have less of a tendency to vaporize on hitting the ground. To what extent does this enrich the number of intact iron meteoroids available to be found on the Earth's surface as compared to a world with a negligible atmosphere?
* Mars had water on its surface in the geologically recent past. What percentage of its surface was covered by water vs. the c. 2/3 of Earth covered by water? This water would have had an equilibrium level of dissolved carbon dioxide making a somewhat acid solution. To what extent would this have dissolved iron meteorites?
* What are the lifetimes of iron meteorites, given the differences in geology (e.g. the typically more active erosion processes on Earth) and atmosphere (e.g. its oxygen which rusts exposed iron), on Mars and Earth respectively?
* At least one Mars rover found bits of meteoric iron -- how does this effect the probability?

← Older revision		Revision as of 23:49, 17 December 2018
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	*[[Meteorites]]		*[[Meteorites]]

−	[[Category: ~~Geology]]~~	+	[[Category: In-situ Resource Utilization]]
−	~~[[Category: Metal]]~~
−	~~[[Category: ISRU~~]]

@@ Line 3: / Line 3: @@
 * How many [[asteroids]] cross Mars [[orbit]] vs. cross earth's orbit?
 * Earth's larger cross-sectional area and gravity well draws a larger fraction of the nearby meteoroids to strike it than does Mars' gravity well. What is the numerical difference?
-* Earth's atmosphere tends to stress stony meteoroids of less than about a hundred feet or so in diameter and more than some unknown diameter to the extent that they explode in the air and leave no trace but dust on the ground but slows 100 foot diameter iron [[meteoroid]]s so they have less of a tendency to vaporize on hitting the ground. To what extent does this enrich the number of intact iron meteoroids available to be found on the Earth's surface as compared to a world with a negligible atmosphere?
+* Earth's atmosphere tends to stress stony meteoroids of less than about a hundred feet or so in diameter and more than some unknown diameter to the extent that they explode in the air and leave no trace but dust on the ground but slows 100 foot diameter iron [[meteoroid]]s so they have less of a tendency to vaporize on hitting the ground. To what extent does this enrich the number of intact iron meteorites available to be found on the Earth's surface as compared to a world with a negligible atmosphere?
 * What are the lifetimes of iron meteorites, given the differences in geology (e.g. the typically more active erosion processes on Earth than on most of Mars, as indicated by e.g. the large difference in uneroded [[crater]]s) and atmosphere (e.g. its [[oxygen]] which rusts exposed [[iron]]), on Mars and Earth respectively?
 * Mars had [[water]] on its surface in the geologically recent past. What percentage of its surface was covered by water vs. the c. 2/3 of Earth covered by water?  This water would have had an equilibrium level of dissolved [[carbon dioxide]] making a somewhat acid solution. To what extent would this have dissolved iron meteorites vs. rate that would occur in earth's lakes and oceans?

@@ Line 17: / Line 17: @@
 [[Category: Geology]]
 [[Category: Metal]]
-[[Category: IRSU]]
+[[Category: ISRU]]

← Older revision		Revision as of 22:50, 19 February 2010
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	[[Category: Geology]]		[[Category: Geology]]
	[[Category: Metal]]		[[Category: Metal]]
		+	[[Category: IRSU]]

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 ==See also==
-[[Iron]]
+*[[Iron]]
+*[[Blacksmith]]
-[[Blacksmith]]
+*[[Steel]]
+*[[Meteors]]
-[[Steel]]
+*[[Meteorites]]
 [[Category: Geology]]
 [[Category: Metal]]

@@ Line 1: / Line 1: @@
-Given Mars' proximity to the asteroid belt and the long geological life of materials on its surface compared to Earth, meteoric iron will probably exist in significant abundance.   The following questions on this probability need to be researched:
+Given Mars' proximity to the asteroid belt and the long geological life of materials on its surface compared to [[Earth]], '''meteoric iron''' will probably exist in significant abundance. The following questions on this probability need to be researched:
-* How many asteroids cross Mars orbit vs. cross earth's orbit?
+* How many [[asteroids]] cross Mars [[orbit]] vs. cross earth's orbit?
 * Earth's larger cross-sectional area and gravity well draws a larger fraction of the nearby meteoroids to strike it than does Mars' gravity well. What is the numerical difference?
-* Earth's atmosphere tends to stress stony meteoroids of less than about a hundred feet or so in diameter and more than some unknown diameter to the extent that they explode in the air and leave no trace but dust on the ground but slows 100 foot diameter iron meteoroids so they have less of a tendency to vaporize on hitting the ground. To what extent does this enrich the number of intact iron meteoroids available to be found on the Earth's surface as compared to a world with a negligible atmosphere?
+* Earth's atmosphere tends to stress stony meteoroids of less than about a hundred feet or so in diameter and more than some unknown diameter to the extent that they explode in the air and leave no trace but dust on the ground but slows 100 foot diameter iron [[meteoroid]]s so they have less of a tendency to vaporize on hitting the ground. To what extent does this enrich the number of intact iron meteoroids available to be found on the Earth's surface as compared to a world with a negligible atmosphere?
-* What are the lifetimes of iron meteorites, given the differences in geology (e.g. the typically more active erosion processes on Earth than on most of Mars, as indicated by e.g. the large difference in uneroded craters) and atmosphere (e.g. its oxygen which rusts exposed iron), on Mars and Earth respectively?
+* What are the lifetimes of iron meteorites, given the differences in geology (e.g. the typically more active erosion processes on Earth than on most of Mars, as indicated by e.g. the large difference in uneroded [[crater]]s) and atmosphere (e.g. its [[oxygen]] which rusts exposed [[iron]]), on Mars and Earth respectively?
-* Mars had water on its surface in the geologically recent past. What percentage of its surface was covered by water vs. the c. 2/3 of Earth covered by water?  This water would have had an equilibrium level of dissolved carbon dioxide making a somewhat acid solution. To what extent would this have dissolved iron meteorites vs. rate that would occur in earth's lakes and oceans?
+* Mars had [[water]] on its surface in the geologically recent past. What percentage of its surface was covered by water vs. the c. 2/3 of Earth covered by water?  This water would have had an equilibrium level of dissolved [[carbon dioxide]] making a somewhat acid solution. To what extent would this have dissolved iron meteorites vs. rate that would occur in earth's lakes and oceans?
-* At least one Mars rover found bits of meteoric iron -- how does this effect the probability?
+* At least one Mars [[rover]] found bits of meteoric iron -- how does this effect the probability?