Space/Science — HabitableZone

Space/Science » in reply to re: Crater Lake

Let's try this in simple steps, Bob
nick hoffman — (archived)

1) Mount Mazama is a mountain
2) It contains a lake whose surface is below the caldera rim
3) The lake floor is deeper than the surface

OK so far? All agreed

The lake surface and the lake floor are neccesarily below the caldera rim, or the water would spill out

In a limited sense, therefore, the lake and lake floor are below SOME OF the surrounding terrain, if you allow this to include the flanks of Mount Mazama

BUT the lake floor is NOT below the level of the surrounding terrain, EXCLUDING Mt. Mazama. If you wish to assert to the contrary, please refer us to a valid map that demonstrates otherwise and contradicts what has already been posted that amply proves this is not the case.

Do NOT bleat on about how you're right and we're wrong, because you're not.

As dtb has pointed out, a rover expedition to Crater Lake would involve driving UP a mountain. Oppy drove across a flat level plain.

In contrast:

1) Barringer Crater, Az is NOT a mountain, although the upraised rim is visible across the surrounding plains
2) It is dry, so its base is easily observable
3) The crater floor is BELOW the surrounding plains

I would far rather try to convert the likes of Barringer crater to a flat plain with a hole in it, than Mount Mazama. A VERY healthy dose of aeolian erosion of the rim of a smaller impact crater with an upraised rim would produce what we see today at Victoria Crater, Mars.

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