Comments on: Friday Field Foto #40: Chert from the Franciscan subduction complex

By: BrianR

BrianR — Sun, 13 Dec 2009 22:53:47 +0000

looks like NPS replaced that original page where I got that block diagram cartoon w/ this one: http://www.nps.gov/prsf/naturescience/geologic-thrusts-from-the-past.htm

It has a similar diagram, but is a schematic cross section instead of a block diagram.

I tried searching for that other image but couldn’t find it, sorry.

By: Shana

Shana — Sun, 13 Dec 2009 22:42:25 +0000

Hello,

Great blog! I love the cartoon image of the Franciscan formation and would like to use it in a paper I am writing (for class, not publication). However, the link to the source seems to be broken. Do you have the original website source from which you retrieved this picture?

Thanx!

By: BrianR

BrianR — Fri, 08 Feb 2008 00:28:09 +0000

Mt. Lassen is the southernmost active volcano…which is just north of my dashed line. I’m not sure of the precise trend of that line…it could indeed be more oblique than I’m showing it here.

By: Lab Lemming

Lab Lemming — Thu, 07 Feb 2008 22:48:05 +0000

Is the southern limit as east-west as you’ve drawn it, or is it more oblique?

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