Term
| Wharton's 4 divisions of the sedimentary region |
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Definition
A – Appalachian Plateau,
D – Chickamauga Valley,
E – Armuchee Ridges
F – Great Valley.
Together, D, E & F make up the “Ridge & Valley”. |
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Term
| Where does the Ridge and Valley region extend? |
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Definition
eastern Kentucky and western Virginia through eastern Tennesse, across NW Georgia, and into Alabama.
This map does not show that the Ridge & Valley actually does NOT include the extreme NW corner of Georgia. |
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Term
| Where is the App. Pleateau located in GA? |
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Definition
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Term
| Where is the Chickamauga Valley located in GA? |
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Definition
| east & south of App Plateau |
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Term
| Where are the Armuchee Ridges located? |
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Definition
| are between the dotted lines; oriented SW to NE. |
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Term
| Rome is on the boundary between... |
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Definition
| Armuchee Ridges and the Great Valley. |
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Term
| Great Valley separates... |
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Definition
| Sedimentary Region from the Cohuttas & Blue Ridge further east. |
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Term
| Sedementary Region Elevation |
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Definition
| Higher than most of GA, but not as high as Blue Ridge. |
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Term
| The geology and formation of the area has resulted in... |
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Definition
| ridges, plateaus, tablelands, cliffs, and gorges, but not true mountains as in the Blue Ridge. |
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Term
| Why are the Blue Ridge Mtns higher than the Sed. Region? |
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Definition
| The crustal folding that occurred when the North American and African continental plates were grinding against each other was more pronounced further east |
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Term
| Sedimentary region made up mostly... |
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Definition
| sandstones, shales, limestones, |
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Term
| Where does the name "Sedementary Region" originate from? |
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Definition
| These rock types form from sand, silt, and marine organism shells built up as layers on the bottom of shallow oceans |
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Term
| Lookout Mountain & Sand Mountain (light blue) are “capped” in... |
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Definition
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Term
| Taylor Ridge (red) is capped in |
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Definition
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Term
| Great Valley and Chickamauga Valley floors are based on |
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Definition
| limestones and dolomites and shales (light pink, and rust). |
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Term
| In the NW, the highlands get ___ precip than the Great Valley. |
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Definition
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Term
| Chick. Valley lies between |
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Definition
| Taylor’s Ridge, and the App. Plateau |
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Term
| Like the Great Valley, the Chickamauga Valley has |
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Definition
| flat or gently rolling terrain. |
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Term
| Original forests hard to reconstruct because |
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Definition
| majority of the valley is agricultural. |
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Term
| Original forests presumably |
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Definition
| oak-hickory; dominant species in one old-growth stand are black oak, post oak, southern red oak, scarlet oak, and mockernut hickory. |
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Term
| The Great Valley is, obviously, at a |
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Definition
| lower elevation than the ridges or the plateaus. |
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Term
| Great Valley is underlain by two main rock types |
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Definition
On flatter terrain is the Knox limestone, along with dolomites (magnesium-rich limestone).
On gentle hills are the Conasauga shales, sandstones and limestones |
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Term
| Some broad species composition differences result from slight elevational differences |
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Definition
Higher terraces had elm, white ash, tulip poplar, sweetgum, ironwood, black cherry.
Bottomlands had white oak, tulip poplar, sweetgum, ironwood, elm, white ash, walnut, sugar maple, and sycamore. |
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Term
| Colluvial flats at first glance resemble |
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Definition
| floodplains, but the major source of soil is “colluvium”, which is material that has been moved down over long time periods from adjacent ridges; thus these sites are usually at the foot of ridges or plateaus. |
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Term
| One source of colluvium is the |
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Definition
| the fracturing of rocks by ice wedges; water seeps into vertical cracks, and then expands when it freezes, breaking off chunks of rock from the cliff face. |
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Term
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Definition
| white oak, yellow poplar, yellow buckeye, beech, white ash, black cherry, black gum, southern sugar maple, slippery elm, and ironwood. |
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Term
| 3 major species of the sedementary region |
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Definition
| Walnut, Sycamore, Sugarberry |
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