Difference between revisions of "February 2, 2013"
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<em>image from [http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2843.pdf S.E. Braden and others, LPSC 44]</em><br /> | <em>image from [http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2843.pdf S.E. Braden and others, LPSC 44]</em><br /> | ||
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| − | [http://www.lpi.usra.edu/meetings/lpsc2010/pdf/2592.pdf Ina] is a remarkable small depression that is much younger than surrounding mare lavas. | + | [http://www.lpi.usra.edu/meetings/lpsc2010/pdf/2592.pdf Ina] is a remarkable small depression that is much younger than surrounding mare lavas. |
| − | It is considered to somehow be volcanic although the main thing that can be said with | + | It is considered to somehow be volcanic although the main thing that can be said with |
| − | certainty is that it occurs on volcanic terrains. Last year Phil Stooke discovered 27 similar | + | certainty is that it occurs on volcanic terrains. Last year Phil Stooke discovered 27 similar |
| − | [http://www.lpi.usra.edu/meetings/lpsc2012/pdf/1011.pdf features] in Lunar Reconnaissance Orbiter high resolution images, and at this year's Lunar | + | [http://www.lpi.usra.edu/meetings/lpsc2012/pdf/1011.pdf features] in Lunar Reconnaissance Orbiter high resolution images, and at this year's Lunar |
| − | and Planetary Science Conference a [http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2843.pdf paper] by scientists from Arizona, Hawaii and Germany | + | and Planetary Science Conference a [http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2843.pdf paper] by scientists from Arizona, Hawaii and Germany |
| − | identify many more and report crater counts derived ages. Red dots on the image map | + | identify many more and report crater counts derived ages. Red dots on the image map |
| − | pinpoint the locations of Ina-like (inites?) such as the one at right. This rimless trough near | + | pinpoint the locations of Ina-like (inites?) such as the one at right. This rimless trough near |
| − | Sosigenes (at 8.335°N, 19.071°) has smooth (S) and rough (R) material on its floor. These | + | Sosigenes (at 8.335°N, 19.071°) has smooth (S) and rough (R) material on its floor. These |
| − | materials have very few impact craters and an estimated age of 18 million years (Ma), | + | materials have very few impact craters and an estimated age of 18 million years (Ma), |
| − | whereas the surrounding mare is 3.5 <em>billion</em> years old. There is a feeling (but little certainty) | + | whereas the surrounding mare is 3.5 <em>billion</em> years old. There is a feeling (but little certainty) |
| − | that the smooth material is volcanic lavas and that volcanic degassing also occurs. Erupting | + | that the smooth material is volcanic lavas and that volcanic degassing also occurs. Erupting |
| − | even tiny volumes of lava requires melting mantle rocks and somehow leaking the magma | + | even tiny volumes of lava requires melting mantle rocks and somehow leaking the magma |
| − | to the surface. If these 50 plus inites shown here scattered across 3000 kilometers are all | + | to the surface. If these 50 plus inites shown here scattered across 3000 kilometers are all |
| − | volcanic then existing understanding of the thermal state of the lunar interior is wrong. | + | volcanic then existing understanding of the thermal state of the lunar interior is wrong. |
| − | Alternatively, inites have a non-volcanic origin and there is some other formation process | + | Alternatively, inites have a non-volcanic origin and there is some other formation process |
| − | that we are totally ignorant of.<br /> | + | that we are totally ignorant of. |
| + | <br /> | ||
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | Rükl plate [ | + | Rükl plate [https://the-moon.us/wiki/R%C3%BCkl_35 35]<br /> |
| − | <em>[ | + | <em>[[21st Century Atlas of the Moon|21st Century Atlas]]</em> chart 12.<br /> |
<br /> | <br /> | ||
| + | <p><b>Yesterday's LPOD:</b> [[February 1, 2013|Winning Moon]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[February 3, 2013|Revisiting Familiar Ground]] </p> | ||
<hr /> | <hr /> | ||
| + | {{wiki/ArticleFooter}} | ||
Latest revision as of 07:26, 28 October 2018
Inites
image from S.E. Braden and others, LPSC 44
Ina is a remarkable small depression that is much younger than surrounding mare lavas.
It is considered to somehow be volcanic although the main thing that can be said with
certainty is that it occurs on volcanic terrains. Last year Phil Stooke discovered 27 similar
features in Lunar Reconnaissance Orbiter high resolution images, and at this year's Lunar
and Planetary Science Conference a paper by scientists from Arizona, Hawaii and Germany
identify many more and report crater counts derived ages. Red dots on the image map
pinpoint the locations of Ina-like (inites?) such as the one at right. This rimless trough near
Sosigenes (at 8.335°N, 19.071°) has smooth (S) and rough (R) material on its floor. These
materials have very few impact craters and an estimated age of 18 million years (Ma),
whereas the surrounding mare is 3.5 billion years old. There is a feeling (but little certainty)
that the smooth material is volcanic lavas and that volcanic degassing also occurs. Erupting
even tiny volumes of lava requires melting mantle rocks and somehow leaking the magma
to the surface. If these 50 plus inites shown here scattered across 3000 kilometers are all
volcanic then existing understanding of the thermal state of the lunar interior is wrong.
Alternatively, inites have a non-volcanic origin and there is some other formation process
that we are totally ignorant of.
Chuck Wood
Note: I don't know if these are the only locations of inites or if these are the only locations
that have been searched.
Related Links
Rükl plate 35
21st Century Atlas chart 12.
Yesterday's LPOD: Winning Moon
Tomorrow's LPOD: Revisiting Familiar Ground
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