15 Florida Groundwater 4

15 Florida Groundwater 4 - Appalachian/continental erosion...

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These Sediments were Silicon-based Sands, Silts, Clays, Rocks, and Rock Fragments 3 They are typically called “siliciclastics” Feldspars Olivine Muscovite
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Sediments Filling in the Georgia Channel Early Miocene (~ 24 Mya) Carried by rivers and longshore currents
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Sediments Rising sea levels allow sediments to become suspended in water and drift over the platform
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Siliciclastics Covered the Peninsula Silicon-based
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1. Deposition of Eocene/Oligocene Limestone (55 – 24 Mya) 1. Raising of the Florida platform 1. Lowering of sea levels, interruption of the Suwannee Current 1. Infilling of the Georgia Channel with sediments derived from
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Unformatted text preview: Appalachian/continental erosion 1. Sea level rise, lack of Suwannee current. 1. Suspended siliciclastic sediments settle over the peninsula 1. These sediments blanket the underlying limestone forming the upper confining layer for the Floridan Aquifer. Sands Miocene deposits are siliciclastic: sands, silts, clays, rocks Limestone These deposits are known commonly as the Hawthorne Formation . They overlie the Eocene and Oligocene limestone deposits and form the upper confining unit for the Floridan Aquifer. Basic Florida Geology Confining unit Water-bearing unit sands, silts, clays, rock...
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15 Florida Groundwater 4 - Appalachian/continental erosion...

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