Geology and Ore Deposits of the Ducktown Mining District, Tennessee. W. H. Emmons , F. B. Laney

1927 ◽  
Vol 35 (5) ◽  
pp. 479-480
Keyword(s):  
Ore Deposits ◽  
Mining District ◽  
Ducktown Mining District

scholarly journals Geology and ore deposits of the Ducktown mining district, Tennessee

10.3133/pp139 ◽  
1926 ◽  
Author(s):  
W.H. Emmons ◽  
F.B. Laney ◽  
Arthur with the active collaboration of Keith
Keyword(s):  
Ore Deposits ◽  
Mining District ◽  
Ducktown Mining District

scholarly journals Mapping the Recovery Process of Vegetation Growth in the Copper Basin, Tennessee Using Remote Sensing Technology

GeoHazards ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 31-43
Author(s):  
Richard Blanton ◽  
A.K.M. Azad Hossain
Keyword(s):  
Remote Sensing ◽  
Landsat Imagery ◽  
Recovery Process ◽  
Mining District ◽  
Vegetation Growth ◽  
Remote Sensing Technology ◽  
Sensing Technology ◽  
Soil Destruction ◽  
Ducktown Mining District ◽  
Mining And Smelting

The Copper Basin (CB) of southeastern Tennessee, known as the Ducktown Mining District, is a classic example of forest and soil destruction due to extensive mining and smelting operations from the mid-1800s until 1987. The smelting operation released a sulfur dioxide by-product that formed sulfuric acid precipitation which, in combination with heavy logging, led to the complete denudation of all vegetation covering 130 km2 in CB. The area has since been successfully revegetated. This study used remote sensing technology to map the different episodes of this vegetation recovery process. A time series of Landsat imagery acquired from 1977 through 2017 at 10-year intervals was used to map and analyze the changes in vegetation cover in CB. These maps were used to generate a single thematic map indicating in which 10-year period each parcel of land was revegetated. Analysis shows that the extent of non-vegetated areas continuously decreased from about 38.5 to 2.5 km2 between 1977 and 2017. The greatest increase in vegetation regrowth occurred between 1987 and 1997, which was the period when all mining and smelting activities ceased. This research could be very useful to better understand the recovery process of areas affected by mining and smelting processes.

scholarly journals Geophysical Prospecting Using ERT and IP Techniques to Locate Galena Veins

2019 ◽  
Vol 11 (24) ◽  
pp. 2923 ◽  
Author(s):  
Julián Martínez ◽  
Javier Rey ◽  
Senén Sandoval ◽  
Mª Camen Hidalgo ◽  
Rosendo Mendoza
Keyword(s):  
Sedimentary Cover ◽  
Ore Deposits ◽  
Electrode Spacing ◽  
High Resistivity ◽  
Normal Faults ◽  
Mining District ◽  
Geophysical Prospecting ◽  
Geophysical Research ◽  
Electrical Sounding

The aim of this study is to prove the effectiveness of two electrical geophysical prospecting techniques, namely electrical resistivity tomography (ERT) and induced polarization (IP), in locating thin vein structures of metal sulphides embedded in Palaeozoic materials underlying a sedimentary cover. For this purpose, a Quaternary basin known as La Garza was selected, located in the mining district of Linares-La Carolina (Southern Spain). Galena (PbS) veins appear abundantly throughout this area, hosted in the Palaeozoic granitic bedrock. The studied veins show thicknesses from 0.5 to 2.0 m, and most present a vertical planar distribution. The veins lose their continuity below the sedimentary cover due to normal fractures that control the subsidence of the basin. During the 1980s, geophysical research campaigns were carried out in La Garza using vertical electrical sounding and failed in detecting the hidden veins. For this reason, to carry out this study, a closed regular mesh was designed, composed by eight ERT and IP profiles, with variable lengths between 315 and 411 metres. An electrode spacing between 5 and 7 metres was selected, thus allowing the granite bedrock to be reached without significantly reducing the resolution capabilities of the method. Even though ERT and IP are well-known geophysical techniques for mapping ore deposits, this is a case study that shows the advantages of the simultaneous use of both techniques (ERT and IP), over their individual application. ERT allows for reconstructing the morphology of the basin and the fractures that control it due to high-resistivity contrast between the overlying sedimentary cover and the underlaying granitic basement. However, it cannot provide any insights about their degree of mineralization. At this point, it is the IP technique that makes it possible to differentiate which are the mineralized structures. Some of these fractures produce high (above 50 mV/V) and moderate (below 50 mV/V) chargeability values, suggesting the existence of several unexploited metal veins. Furthermore, the derived models enable researchers to analyse the morphology of this sedimentary basin controlled by normal faults.

Summaries of Pre-Cambrian Literature for 1902-1903. I (Continued)Description of the Cranberry Quadrangle of North Carolina and Tennessee. Arthur KeithCopper-Bearing Rocks of Virgilina Copper District, Virginia and North Carolina. T. L. WatsonGeology of the Piedmont Plateau Area of the Washington Quadrangle. Arthur KeithStructural Details in the Green Mountain Region, and in Eastern New York. T. Nelson DaleMetamorphic Crystalline Rocks of the New York Quadrangle. F. J. H. MerrillReport on Progress Made during 1898, in Mapping the Crystalline Rocks of the Western Adirondack Region. C. H. Smyth Jr. , D. H. NewlandRecent Geologic Work in Franklin and S. Lawrence Counties, N. Y.H. P. CushingPre-Cambrian Outlier at Little Falls, Herkimer Co., N. Y.H. P. CushingThe Laurentian Peneplain. A. W. G. WilsonThe Pre-Potsdam Peneplain of the Pre-Cambrian of North-Central Wisconsin. S. WeidmanVariolitic Pillow-Lava from Newfoundland. Reginald A. DalyThe Progress of Geological Investigation in Nova Scotia. R. W. EllsOn the Petrographical Relations of the Laurentian Limestones and the Granite in the Township of Glamorgan, Haliburton County, Ontario. L. C. GratonReport on the Geology of Argenteuil, Ottawa and Part of Pontiac Counties, Province of Quebec, and Portions of Carleton, Russell and Prescott Counties, Province of Ontario. R. W. EllsNotes on Certain Archæan Rocks of the Ottawa Valley. A. OsannLake Temiscaming to the Height of Land. Willet G. MillerRound Lake to Abitibi River. L. L. BoltonThe Sudbury Nickel Deposits. A. P. ColemanMoose Mountain Iron Range. C. K. LeithUp and Down the Mississaga. L. C. GratonIron Ranges of Northern Ontario. W. G. MillerIron Ranges of Northwestern Ontario. A. P. ColemanNepheline and Other Syenites near Port Coldwell. A. P. ColemanNepheline Syenite in Western Ontario. W. G. MillerNote on the So-Called Basal Granite of the Yukon Valley. R. G. McConnellStructure of the Southern Portion of the Klamath Mountains, California. O. H. HersheySome Crystalline Rocks of Southern California. O. H. HersheyThe Gold Belt of the Blue Mountains of Oregon. W. LindgrenStratigraphy and Structure, Lewis and Livingston Ranges, Montana. Bailey WillisGeology and Ore Deposits of the Elkhorn Mining District, Jefferson County, Montana. W. H. WeedGeology of the Hartville Quadrangle of Wyoming. W. S. Tangier SmithOre Deposits of the Rico Mountains, Colorado. F. L. RansomeGeology of the Silverton Quadrangle, Colorado. Whitman Cross

1904 ◽  
Vol 12 (1) ◽  
pp. 52-62
Author(s):  
C. K. Leith
Keyword(s):  
New York ◽  
North Carolina ◽  
Pillow Lava ◽  
Crystalline Rocks ◽  
Ore Deposits ◽  
Mining District ◽  
Jefferson County ◽  
Geological Investigation ◽  
Northern Ontario ◽  
Nickel Deposits

scholarly journals Pb–Zn mineralization in a Miocene regional extensional context: The case of the Sidi Driss and the Douahria ore deposits (Nefza mining district, northern Tunisia)

2008 ◽  
Vol 34 (3) ◽  
pp. 285-303 ◽  
Author(s):  
Sophie Decrée ◽  
Christian Marignac ◽  
Thierry De Putter ◽  
Etienne Deloule ◽  
Jean-Paul Liégeois ◽  
...  
Keyword(s):  
Ore Deposits ◽  
Mining District ◽  
Northern Tunisia
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