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Black Warrior Basin

MAFLA* Formation
Chalk
Tuscaloosa
James Lime
Hosston
Cotton Valley
Smackover
Norphlet

Stratigraphic Chart

*MAFLA - Mississippi,

Alabama & Florida

(Also Applicable to

East Louisiana)

 

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SUBSURFACE GEOLOGY

THE MOST RELEVANT MAFLA / BWB CONTENT AVAILABLE AT ANY INDUSTRY WEBSITE

NOW INCLUDING SPECIAL REPORTS ON THE UNCONVENTIONAL BROWN DENSE LIMESTONE AND THE TUSCALOOSA MARINE SHALE TRENDS

The drilling of many thousands of wells throughout the United States Gulf Coast has yielded an incredible body of knowledge about those stratigraphic units that do not outcrop in the greater Gulf Coast area. This information is derived principally from sample cuttings, electric and radioactive logging devices lowered into the wellbore, and mudlog and sample log descriptions.


The interpretation of this large subsurface database has yielded vital and intriguing clues about the formation of the Gulf of Mexico, the uplifting and subsequent erosion of entire mountain ranges, and the tremendous impact of the Mississippi River and other similar ancestral streams that reshaped the land and deposited the immense layers of sand, silt and shale that filled the Gulf Coast Basin and later became hosts for large deposits of oil, gas, and coal.

The subsurface record also chronicles the advance and retreat of the sea across the land, the precipitation of incredible volumes of salt in a once-arid climate, and the distribution of thick lava and beds of volcanic ash from numerous volcanoes. There might even be pervasive evidence of the catastrophic events that heralded the end of the Permian and the Cretaceous, recorded in the thin sediment layers attributed to those unconformities and penetrated by thousands of wellbores - drilled not only for oil and gas, but also water and other natural resources.


Sadly, much of this information is lost every day as paper logs and sample cuttings are destroyed through disposal or neglect. The public does not realize the value of this great resource, or the tragedy of its loss.

Since existing well data contributes critical information to the domestic explorer, its unavailability can delay or even prevent the drilling of many new exploratory wells in the Gulf Coast.


When one considers the sobering reality that most of the exploration for new oil and gas reserves in the Lower 48 is conducted by small independents like Vision Exploration - and not the large major oil companies or recently formed "super-independents" - the preservation of all subsurface data should be immediately recognized as a very important individual, corporate and governmental objective. 

Whether you happen to be a student, a colleague, or just a curious observer, we hope that you will find some value in Vision's brief Formation Summaries (links to which are shown at above left) that focus on important subsurface reservoirs in the eastern United States Gulf Coast and Black Warrior Basin regions. Vision's Formation Summaries will first concentrate upon those reservoirs that we are most familiar with.

We plan to add other reservoir summaries and items of interest (type logs, etc.) as time and experience allows.

 

Visitors to this section are advised that our summaries are provided in good faith as helpful commentaries, but have not been peer reviewed by professional geological editorial committees or trade publications.  Our advice to those who wish to learn more about the topics covered in our summaries is: investigate the peer-reviewed articles that are published regarding such topics, and/or contact us for more information.