Shivam sharma Asked a Question
August 31, 2020 10:58 ampts 30 pts
A stratigraphic column, consisting of formations A, B and C (from bottom to top), having mutual gradational contacts, is characterized as follows: C-shore-face sandstone B- inner to middle shelf sandstone-shale alternation A-outer shelf mud with occasional thin sandstone What does this stratigraphic column indicate transgression or regression? Justify. Which formation has the sandstone with the least matrix, and why? Which formation has the most rounded sand grains?
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  • Sajan sarthak sahoo Best Answer
    see answer in attachment
    • cropped5180803070429169482.jpg
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  • Rahul pandey thankyou
    1. The Stratigraphic column indicates marine regression because finer sediments (mud) are gradually changing into sand i.e., a coarsening upward sequence. Coarsening upward sequenc...
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