T or E

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Gregg</i>
<br />I am glad to see your calculated spatial dimensions, to several digits. My engineering calculation are good to 16 digits, give or take 20 orders of magnitude. ahem.<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Gregg, if I get your meaning (and humor), I take it your wondering where we got the ~1.05 mm measurement for the cross of the T on the context image. I assume this, because the three digits in the final answer, is just a conversion from meters to kilometers.

Well, take it with a little grain of salt, but it's just a matter of meausuring on the screen at 100% with digital calipers: set calipers to 2 digits accuracy (millimeters), eyeball, press button, repeat 5 times, take average.

Actually, with what we were trying to accomplish, you could have done it with a millimeter ruler. That would have been close enough.

rd

[/quote]Until very recently I believed that M0303753, which shows a system of gullies at the foot of the nearby escarpment to Olympus Mons, provided information which subtracted from the artificiality theory for the T or E. Rich leaned in the opposite direction, thinking instead that it added to the theory. Now I'm tending once again to think he may be right.
Neil
[/quote]

Are you saying that gullies or "flow paths" come from Oympus Mons and lead to the "T or E"? If so, could they have been collecting "lava" from deep within Mars. It might very well have had a useful composition different from surface material.

I noticed in your picture that some channels crossed other channels at almost right angles. That does not seem natural at all.

Gregg Wilson

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Gregg</i>
<br />I noticed in your picture that some channels crossed other channels at almost right angles. That does not seem natural at all.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Exactly. Like roads on a tomato farm, separating the two main harvest regions. Only in this case, it's two main veins. Maybe.

rd

[/quote]
Exactly. Like roads on a tomato farm, separating the two main harvest regions. Only in this case, it's two main veins. Maybe.

rd
[/quote]

Let either channel be made first, by erosion, dissolution, melting, whatever. The next channel, at roughly right angles to the first, would similary "dig" its way until it met the prior channel. Then it would simply dump into and follow the pre-existing channel. No way does it cross it. These actions, if natural, are fundamentally passive not pro-active.

Gregg Wilson

Here are some images of recognized dry river beds on Mars; (second is from Morrocco on Earth.) Compare these to the T or E and also the M03 "gullies."

www.dlr.de/en/DesktopDefault.aspx/tabid-...y_read-Image.1.1291/


www.maion.com/photography/morocco/atlas_mountains_p9.html


www.humboldt-foundation.de/kosmos/titel/2004_007.htm



(This is for illustration only.)

Neil

"Are you saying that gullies or "flow paths" come from Oympus Mons and lead to the "T or E"?" [Gregg]

I was only saying that they had some similarities, e.g., flat bottoms, sloped walls, and "T" intersections. But I sure would like to see more and better imaging of the whole area to see if there are any other relationships. After the 1998 image, we see no more of this curious, and quite large, T or E in hi-res images. Oops, There I go again!

Also, FYI, I did a cursory search of river maps and lava flow maps on Earth, and saw very little, if anything, resembling the kinds of patterns we've been talking about here.

Neil