Proterozoic schists

Posted 29 December 2014 by

Photograph by Jim Kocher. Photography contest, Honorable Mention.
Painted Wall -- Black Canyon of the Gunnison River, Montrose, Colorado, May, 1999; Kodachrome 64. Proterozoic schists intruded by pegmatite dikes (~1.25 Ga). Vertical relief is ~2,200 ft.

15 Comments

gdavidson418 · 29 December 2014

A picture not taken in vein.

I'll skip the other puns...

Glen Davidson

Henry J · 29 December 2014

I’ll skip the other puns…

That's a relief!

ashleyhr · 29 December 2014

You don't want to cause a schism ...

Matt Young · 29 December 2014

Or take all those rocks for granite.

MememicBottleneck · 29 December 2014

Alright, alright, I've had just about enough of this schist.

Henry J · 29 December 2014

Rock science can be a hard subject.

Just Bob · 29 December 2014

And it's seldom crystal clear.

ksplawn · 29 December 2014

But I've often feld it was a gneiss job if you could get it.

gdavidson418 · 30 December 2014

ksplawn said: But I've often feld it was a gneiss job if you could get it.
Yeah, but if you shale not pass, it'll be your own fault, and you'll phyllite schist. So don't marble that I don't lava your advice. Glen Davidson ps. Yes, I said I wouldn't, but nothing else is going on.

Henry J · 30 December 2014

On the bright side, at least it isn't kinds of fish...

gdavidson418 · 30 December 2014

Henry J said: On the bright side, at least it isn't kinds of fish...
Don't be koi about what you mean. I don't like to flounder, wondering if you're talking out of your wrasse. Anyway, it slate to bring up fish, and I have no apatite for it. If you don't like it, that's tuff. And if you think this is bad, I can only say that it's not atoll. Glen Davidson

Palaeonictis · 30 December 2014

What era? And once that's settled, what period and are there any fossils?

gdavidson418 · 30 December 2014

Palaeonictis said: What era? And once that's settled, what period and are there any fossils?
Fossils in schist? Metamporphosis isn't kind to fossils. Glen Davidson

Just Bob · 30 December 2014

Dude!

This site rocks!

emeans · 16 January 2015

No puns here, you guys are too good -- but I have to say that I gazed at this picture of the spectacular billion-year-old rock cliff just as an a-capella version of "Hallelujah" by Leonard Cohen blared from my speakers. The contrast between the billion-year-old rock and such music almost blew me off my chair. Who can listen to that and not be stirred? How can it be that such spirit could emerge from mere matter that in some unfathomable way, originated in that same cold, dead, ancient rock a billion years later? What a story. What a fabulous story! Sometimes I feel like we should all be dancing on tables or laughing at the spectacle of it. This is why evolutionary biology rocks.