Erico wrote: ↑
Sat Mar 03, 2018 5:01 pm
The laser reflectors. What I want to know is how the cracks formed in the floor of the crater.
I not sure if Neufer's post explains it... there does not seem to be Scarps inside the crater. I am thinking Degassing. Gasses from volcanic activity of the time of the floor cooling... you have perpendicular fissures, that almost look like water draining, running up from our "bottom" of the crater. and then one across, and then some separate ones in different directions... the Scarping in the video does not appear to show Rilles, or groove, but where something like a Tectonic Plate rose... they do not seem to explain features in a crater.
There are several theories of Lava Tubes that collapsed, or lava flowed, while cooling, but it is obviously not all craters. There are other planets, and moons that have weird rilles, and shrunken places.
Here is an idea...a small or large "Fire Curtain", in a cooling volcanoe... would leave a depressed line... some even here on Earth.
Here is a VERY similar one on EARTH...note the previous "Cut" into the landscape, at a perpendicular angle...
Hot lava "Cuts" into the more cooled and solid material. Thus when it cools, it leaves a Rille...when THIS Curtain of Fire cools...it should leave a perpendicular Rille. Could also be small areas of degassing as well. Gas comes up, and blows off material to the side, and leaves a depression. The other craters just cooled, but did not "crack"...maybe they did not de-gas, or have extra lava activity. But they certainly cooled.
I hope that helps at least...just my idea at the moment, because I wonder about this stuff too.
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