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23 October, 05:28

The Gulf trough (website term) or Georgia Channel (pdf term) aided deposition of the rocks in Question 4 by preventing sand and mud (siliciclastics) eroded from the Appalachians from reaching the Florida platform.?

A. True

B. False.

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  1. 23 October, 07:26
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    Answer: TRUE

    This is question 4. What types of rocks were deposited from the Late Jurassic to Oligocene?

    (1) carbonates (limestones and dolomites)

    (2) mafic volcanic rocks

    (3) sandstones and shales deposited in beach settings

    (4) conglomerates deposited in river systems

    (5) felsic volcanic rocks

    Explanation:

    Before the Oligocene period, Florida was submerged under salt water making it perfect for developing carbonate rocks. However this would have been impossible had it not been for the Suwanee channel.

    Mainland North American rivers carried siliciclastics eroded from the Appalachians into the water above the submerged Florida. The Suwanee Channel, the first occurrence of the Georgia Channel prevented the siliciclastic sediments from coming into contact with the forming carbonate rocks.
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