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March 6, 2016 Weekly Geology Guess

March 6, 2016
>>>>>    I have decided to split up my Weekly Weather and Geology Guess into 2 different emails.  After you review them this week, let me know if you want off one or the other.  Otherwise I will send both to you.  Thanks, R
Greetings from the Bluff Park Back Porch, way up yonder on Shades Mountain (1,109′) in Alabama:
Discussion on Alabama Geology, Part 2, 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 2 of 8)

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 2 will cover the Highland Rim Physiographic Province of Alabama.  Attached as a PDF File.

http://www.encyclopediaofalabama.org/article/h-1311

Quoted or Paraphrased from “Lost Worlds in Alabama Rocks”,  cc 2013, Dr. Jim Lacefield, p. 67.
–    Rocks:    “The rocks underlying the Highland Rim Province are mostly limestones and cherts, which have eroded over time to produce a landscape of low , rounded hills and rich, red farmland.”
Limestone is a sedimentary rock composed largely of the mineralscalcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Most limestone is composed of skeletal fragments of marine organisms such as coral, forams and molluscs.”  Wikipedia.
Chert (/ˈɜːrt/) is a fine-grained silica-rich microcrystalline, cryptocrystalline or microfibroussedimentary rock that may contain small fossils.”    Wikipedia
–    Structure:  “The Highland Rim rocks are nearly level but do have a slight northward tilt due to Nashville Dome in middle Tennessee.”
>    See Part 1 for overview as to why the Tennessee River flows northwest.
–    Fossils:    “One of the notable feature of many of the rocks is an abundance of sea creature fossils. Shells and body parts are common.  This area was part of a vast  shallow inland sea.”
Page 1.  Welcome
Page 2.    Geologic Time Scale
Page 3.  Alabama Geologic Map
Page 4. Alabama’s Physiographic Provinces
Page 5.    Highland Rim Physiograpic Province
Page 6.    Highland Rim Road Map
Page 7.    Highland Rim Geologic Cross Section of the Tennessee Valley
Page 8.    Highland Rim Geologic Map
Pages 9-11. Pictures of Highland Rim
Page 12.    Mississippian Age Bangor Limestone
Page 13.    Mississippian Age Brachiopods
Page 14.    Mississippian Age Archimedes (Sea Fan)
Page 15.    Mississippian Age Crinoid Fossil (Animal called Sea Lilly)
Page 16.    Mississippian Age Hartselle Sandstone and Shale
Page 17.    Mississippian Age Ft. Payne Chert Quarry
Page 18.    Arrowhead made from Ft. Payne Chert
Tune in next week for Part 3 of Alabama’s Cumberland Plateau.
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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Have A Great Week!

Randy/Randall
AL Miss Age Brachiopods, St. Clair Co.

AL Miss Age Brachiopods, St. Clair Co.

AL Miss Age Brysoan-Zooarium

AL Miss Age Brysoan-Zooarium

BPS Field Trip

Al Miss Age Crinoid Stems, Blount Co.

BPS Field Trip

AL Miss Age Fossils, Crinoids, Coral, Brachiopods. St. Clair co.

AL Miss Age Horn Coral, St. Clair Co.

AL Miss Age Horn Coral, St. Clair Co.

AL Miss. Age Starfish

AL Miss. Age Starfish

AL Miss. Age, Crinoid-platycrinites

AL Miss. Age, Crinoid-platycrinites

Miss. Age Shark Tooth.  St. Louis LS

Miss. Age Shark Tooth. St. Louis LS

Miss. Age Trilobite-Metazoan

Miss. Age Trilobite-Metazoan

GEOLOGY OF ALABAMA 2016, Part 2 of 8

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