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March 20, 2016 Weekly Geology Guess

March 20, 2016
Greetings from the Bluff Park Back Porch, way up yonder on Shades Mountain (1,109′) in Alabama:
Discussion on Alabama Geology, Part 4 of the Alabama Valley and Ridge, as a PDF is attached.  Discussion below.
This article provides a good overview of Alabama Geology.  By Nick Tew and Sandy Ebersole of the Geological Survey of Alabama.

http://www.encyclopediaofalabama.org/article/h-1549

Enjoy the discussion and please throw you 2 cents or quarter’s worth of comments and questions.
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Minerals and Rocks – The Good Life from the Ground
 
“If it ain’t grown, it has to be mined”
Topic of the Week:  Geology of Alabama (Part 4 of 8)
The Alabama Valley and Ridge Province

Geologic Maps of Alabama
https://images.search.yahoo.com/yhs/search;_ylt=A0LEVvx838hWGSAAsqIPxQt.;_ylu=X3oDMTByMjB0aG5zBGNvbG8DYmYxBHBvcwMxBHZ0aWQDBHNlYwNzYw–?p=Geology+of+Alabama&fr=yhs-befrugal-002&hspart=befrugal&hsimp=yhs-002

Part 4 will cover the Valley and Ridge Physiographic Province of Alabama.  Attached as a PDF File.

http://www.encyclopediaofalabama.org/article/h-1308

“The Valley and Ridge section occupies about 9 percent of the state. It occurs as a roughly northeast-trending rectangular area in central and east-central Alabama, mainly encompassing Shelby, St. Clair, Calhoun, Cherokee and parts of Jefferson, Bibb, Talladega and Etowah counties and continues northeast into Georgia and Tennessee. – See more at: http://www.encyclopediaofalabama.org/article/h-1308#sthash.xsmbpNqJ.dpuf
The Valley and Ridge section occupies about 9 percent of the state. It occurs as a roughly northeast-trending rectangular area in central and east-central Alabama, mainly encompassing Shelby, St. Clair, Calhoun, Cherokee and parts of Jefferson, Bibb, Talladega and Etowah counties and continues northeast into Georgia and Tennessee. – See more at: http://www.encyclopediaofalabama.org/article/h-1308#sthash.xsmbpNqJ.dpuf
The Valley and Ridge section occupies about 9 percent of the state. It occurs as a roughly northeast-trending rectangular area in central and east-central Alabama, mainly encompassing Shelby, St. Clair, Calhoun, Cherokee and parts of Jefferson, Bibb, Talladega and Etowah counties and continues northeast into Georgia and Tennessee.” – See more at: http://www.encyclopediaofalabama.org/article/h-1308#sthash.xsmbpNqJ.dpuf
Structure:  Excellent write up in Lost Worlds of Alabama by Jim Lacefield, 2013.
“Many millions of years ago as portion of Africa was being shoved by geologic forces against North America, a huge wrinkle developed in the Earth’s crust here, producing a generally up-folded area.” p.64
“A Tortured History Reflected in Alabama’s Crust > Geological Evidence that Alabama is not a single land, but many”  p.171
=    >>>>> “The Devil is in the Details.”
–    Fossils:    The fossil records records life from Cambrian > Ordovician > Silurian > Devonian > Mississippian > Pennsylvanian Ages.
Attached PDF File.
Page 1.  Welcome
Page 2.    Geologic Time Scale
Page 3.  Alabama Geologic Map
Page 4.    Valley and Ridge Physiograpic Province
Page 5.    Valley and Ridge Road Map
Page 6.    Valley and Ridge Geologic Map
Page 7.    Valley and Ridge, Moss Rock, Hoover, AL Waterfall.  Pennsylvanian Age.
Page 8.    Valley and Ridge, Red Mountain Anticlinorium or Jones Valley, Hoover, AL.
 
Page 9.    Valley and Ridge, Shades Mountain, Hoover, AL
Page 10.    Valley and Ridge Province looking east from Hoover, AL
Page 11.    Valley and Ridge, Cahaba River Lilies, Bibb County, AL
Page 12.    Valley and Ridge, Ripple Marks in Sandstone, Oneonta, AL.
Page 13.    Valley and Ridge, Birmingham, AL, Regions Park, Cambrian Age Dolomite with sinkholes.
Page 14.    Valley and Ridge, Pelham, AL, Faulted Ordovician Limestone, Karst Topography.
Page 15.    Valley and Ridge, Idealized Cross Section of Birmingham Aniticline by US Steel.
Page 16.    Valley and Ridge, Silurian Age Red Mountain Iron Ore, Birmingham, AL.
Page 17.    Valley and Ridge, Birmingham Anticline, US Highway 280.
Page 18.    Valley and Ridge, Birmingham Anticline, US Highway 280.
Page 19.    Valley and Ridge, Birmingham Anticline, US 280, Ordovician Age Limestone.
Page 20.    Valley and Ridge, Silurian Age Red Mountain Formation, US280, Birmingham, AL.
Page 21.    Valley and Ridge, Silurian Age Red Mountain Formation Fossils (Brachiopods) , Birmingham, AL.
Page 22.    Valley and Ridge, Silurian Age, Red Mountain Formation, Fault in US 280 road cut.
Page 23.    Alabama Piedmont, Part 5 of 8, to be continued next week.
The images attached are generally art work showing either marine or land life.  Per usual, there were plants and animals trying to get to dry land.
Thanks,
Randy
References:
–    Lost Worlds of Alabama by Jim Lacefield.
–    Wikipedia
–    Geological Survey of Alabama
–    Any many others that I am indebted to.
–    Also my Professors and mentors, most of whom are now deceased.
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Another 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
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“No copyright infringement intended.
The rights belong to their respective owners”
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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.

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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.  http://tineye.com/

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Wow, these email presentations take awhile to beat down into bite sized presentations.
And as always, “The Devil is in the Details”!
 
Have A Great Week!
Randy/Randall
GEOLOGY OF ALABAMA 2016, Part 4 of 8

1.  Cambrian Age. humboldt.edu

1. Cambrian Age. humboldt.edu

2.  Ordovician Age.  humboldt.edu

2. Ordovician Age. humboldt.edu

3.  Silurian Age.  humboldt.edu

3. Silurian Age. humboldt.edu

4.  Devonian Marine Transitions. dinosaurs.wikia.com

4. Devonian Marine Transitions. dinosaurs.wikia.com

5.  Carboniferous Age.  wongchunxing.blogspot.ru

5. Carboniferous Age. wongchunxing.blogspot.ru

6.  Carboniferous Coal Age. worldofprehistory.wikia.com

6. Carboniferous Coal Age. worldofprehistory.wikia.com

7.  Carboniferus Sswamp. science.nationalgeographic.com

7. Carboniferus Swamp. science.nationalgeographic.com

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