Lava Left It's Mark On Grand Canyon

ABC - Discovery News ^ | 2-15-2008 | Larry O'Hanlon

[ForGod'sSake]

Thanks guys. blam’s especially is better than any I was able to run down. FYI, and as near as I can tell from Google Earth’s scale, just the actual crater part in the pic is ~13.5 miles across. Pretty impressive. For some perspective I look at it this way, I have to drive about the same distance to go to the grocery store.

[ForGod'sSake]

I think this might be awfully interesting for those not color challenged like myself. Steve Dutch with the Univ of Wis-Green Bay, as he explains HERE, has taken USGS info and formatted it for the web.

It may shed some light on the present discussion about ARIZONA'S Grand Canyon; I dunno. I think I'm able to pick out the Grand Canyon on the map but since I can't do anything with the colors, it's terribly frustrating. A little help? Or if you find anything else interesting, give a shout.

[blam]

Oh boy. To many colors for me.

[ForGod'sSake]

Oh boy. To many colors for me.

I sympathize ;^)

[ForGod'sSake]

~PING~ to #42 for comments/observations.

[SunkenCiv]

The advantage to using graphs in studies is that there are fewer pages to skip. ;’)

[Fred Nerks]

http://www.durangobill.com/ImageIndex.html

might be useful...

[blowfish]

That’s hysterical! Thanks for the laugh.

[Fred Nerks]

interesting image of Marble Canyon.

[Fred Nerks]

Rift Valley in the East Pacific Rise near 13°N, obtained during a dive of the CYANA submersible (CYANA in 1972); courtesy of R. Hekinian.

SOURCE LINK.

[Fred Nerks]

A robot submarine is revealing the hidden secrets of a massive underwater canyon off the coast of Portugal. At 5km deep, the Nazare Canyon is the same size as America's Grand Canyon...

[Fred Nerks]

http://arxiv.org/abs/astro-ph/0408539

Astrophysics
Title: Protoplanetary Earth Formation: Further Evidence and Geophysical Implications
Authors: J. Marvin Herndon
(Submitted on 29 Aug 2004)

[Renfield]

That’s a nice site, but it’s just about impossible to do any coherent analysis with state-scale geologic maps. We use 15-minute geologic quads at work (these are at a scale of 1” = 4000’).

[bert]

As you drive from Flagstaff north to the south rim, you traverse a widw flat plain that has many many large and small volcanic cones.

The National Monument Sunset Crater is the largest

They pretty much extend to the edge of the canyon.

[humblegunner]

The same rugged canyon country and eons of erosion have dismembered the lava flows

No way!

The young Earth crowd claim the canyon was formed in about fifteen minutes last Monday.

[bert]

Sunset Crater National Monument

[ForGod'sSake]

Heh.

[ForGod'sSake]

That’s hysterical! Thanks for the laugh.

It's good to know there's someone around so easily amused. I know who I can tell my old jokes to now.

[ForGod'sSake]

Hiyer Fred. Thanks for the durangobill link. I'll have to spend some time looking it over; lots o' stuff there.

Pretty amazing similaritites between the underwater rift and the abovewater, er, "erosion features caused by rivers". It would make sense that rivers would follow, in addition to lowlying areas, weak spots, or rifts, in the landscape, no? The Great Rift Valley might be a similar scenario and nobody seems to ge too excited about that.

Do me a favor: If you're not color challenged, go HERE and have a look around the valleys of most of Nevada and tell me their ages based on this map's specs. FWIW, they look to me to be of recent vintage but I can't be sure because I can't do much with the colors. BTW, the valleys appear to me to be a light gray flanked by various blues, reds, purples, whatever...

[ForGod'sSake]

That’s a nice site, but it’s just about impossible to do any coherent analysis with state-scale geologic maps.

Completely understand. I'm thinking of something on a larger scale. If you have a few minutes to spare, see what you can do with my question to Fred Nerks in #59. The colors give me fits!