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January 22, 2016 Weekly Geology Guess of Glacial Flooding

January 21, 2017
Greetings from the Bluff Park Back Porch, way up yonder on Shades Mountain (1,109′) in Alabama:


We will continue with  the remainder of the glacial flooding topics.  This will be the final discussion, Part 3 of 3.
>    These are the topics that we will cover this week.


            A rhythmite consists of layers of sediment or sedimentary rock which are laid down with an obvious periodicity and regularity,
            Rhythmite Images:
Touchet beds in the “Little Grand Canyon” near Lowden in the Walla Walla valley. Note distinct layers.
from Williamborg talk, October 1, 2006.
        jökulhlaup (Icelandic pronunciation: [ˈjœːkʏl̥øip]) (literally ‘glacier run’)
Hubbard Glacier in Alaska on August 14, 2002. A Jökulhlaup occurred on August 14, 2002 after the lake had risen 18.6 meters (61 feet) creating the second largest en:Glacial Lake Outburst Flood worldwide in historic times. (USGS)
Jökulhlaup Images”;_ylt=A0LEVidpm4NYnigAQ7MPxQt.;_ylu=X3oDMTByMjB0aG5zBGNvbG8DYmYxBHBvcwMxBHZ0aWQDBHNlYwNzYw–?p=J%C3%B6kulhlaup&fr=yhs-befrugal-002&hspart=befrugal&hsimp=yhs-002#id=7&

Note:  These events do not occur in a vacuum and impact our everyday lives.
The Eyjafjallajokull volcano can cause jökulhlaups. The 2010 eruption caused a jökulhlaup with a peak flow of about 2,000 to 3,000 m3/s[14][15]
This one caused major airline delays across Europe.  Seems like our modern jet engines do not like volcanic ash which turns to glass on the hot turbine blades leading to engine failure.  The ash can also stall out the engine which leads to major maintenance problems.

>    As with most of my weekly fores into geology, with each topic I could write many papers and dissertations.
>    As usual, I scramble to just stay ahead of my audience.
Note:  I have intentionally reduced the amount of linked graphics in this email due to the amount of space required and trying to untangle everything the following week has been a mess.
References include:


–    Wikipedia


Editors Note:  It is the intent of this site to keep this discussion as simple as possible, so as to educate the interested general public and not to discuss with the geology crowd the latest geologic theories and nuances.  Thanks, R

“No copyright infringement intended.

The rights belong to their respective owners”

Copyright Disclaimer: Under Section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.

Author’s Request:  If you see any pictures that you know the source and photographer, let me know immediately.  Thanks!  R

Images have been searched by TinEye Reverse Image Search.


Next week we will go to the Yellowstone Hot Spot to see what we can dig up.

Enjoy the adventure!
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