Discuss the environment of deposition of the Late Devonian-Early Mississippian black shales. Describe the
characteristics of black shales. Include some examples of formation names for these black shales. What will be an ideal response?
Black shales are clay-rich sediments that include high proportions of organic material.
Depositional conditions apparently were distinguished by undisturbed bottom water, reduced
supply of coarse detrital sediments, organic matter, and low oxygen levels/anoxic
environments. Fossils that are found in black shales include conodonts, acritarchs, and plant
spores. In the eastern part of the United States, many of these black shales are called the
Chattanooga Shale
You might also like to view...
Absolute location and relative location are the same thing
Indicate whether the statement is true or false.
Approximately what percentage of gas emitted by volcanoes is water vapor?
A. 25% B. 1% C. 10% D. 70% E. 45%
In which region of the world would you expect irrigation to be most critical?
A) Rainfall is high. B) PET is equal to rainfall. C) PET is lower than rainfall. D) PET is higher than rainfall. E) Rainfall is low.
One of the common surface features of karst landscapes are sinkholes, also known as ________
A) travertine B) dripstone C) dolines D) tufa E) geysers