Geochemical mapping in Georgia, USA: a tool for environmental studies, geologic mapping and mineral exploration

Cocker, Mark D.

doi:10.1016/s0375-6742(99)00079-5

Cited by 23 publications

(11 citation statements)

References 17 publications

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“…Roads which are a main source of pollutants in Colombo city may be the source of Pb in these areas as well (Ranasinghe et al, 2007). Such single point Pb anomalies of 30-525 ppm that show little correlation with Co, Cu, Ni, or Zn have been reported to be related to small cities and could not be related to any known geological source area, as recorded from Georgia USA as well (Cocker, 1999).…”

Section: Trace Elementsmentioning

confidence: 97%

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Stream sediment geochemistry of the Upper Mahaweli River Basin of Sri Lanka—Geological and environmental significance

Ranasinghe

Fernando

Dissanayake

et al. 2008

Journal of Geochemical Exploration

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Section: Trace Elementsmentioning

confidence: 97%

“…In addition, these maps provide information on pollutant sources, weathering, and transport processes of the catchment area. The fundamental premise is that stream sediments are composite products of erosion and weathering and thus represent the source catchment area of the stream drainage network (Darnley, 1990;Cocker, 1996Cocker, , 1999.…”

Section: Introductionmentioning

confidence: 99%

Stream sediment geochemistry of the Upper Mahaweli River Basin of Sri Lanka—Geological and environmental significance

Ranasinghe

Fernando

Dissanayake

et al. 2008

Journal of Geochemical Exploration

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“…Hydrogeochemical surveys of drainage systems have long been employed not only as geochemical exploration tool but to provide information on contaminant metals sources in relation to weathering and erosion transport processes within the catchment area [1][2][3]. However, a number of studies had shown that trace metals in-puts into the aquatic systems can be through; a) geogenic sources, related to the processes of weathering, erosion and sedimentation of geological units within the catchment area and b) anthropogenic sources, related to human activities that cause enrichment of metals in river waters and bottom sediments [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical Assessment of Metals Contamination in an Urban Drainage System: A Case Study of Osogbo Township, SW-Nigeria

Tijani¹,

Onodera²

2009

JWARP

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With increasing urban population, attention had been focused on environmental degradation of urban drainage system with respect to trace/heavy metal contaminations. Such concerns underlie the ever-increasing impacts of urbanization and industrial activities on urban watershed in the developing regions of the world, especially in areas with inadequate land-use plan and poor waste disposal and management practices. Hence, this study highlights the hydrogeochemical assessment of surface water and bottom-sediment samples from an urban drainage system in Osogbo Township, SW-Nigeria with respect to trace metals contaminations.The results show that the surface water samples have generally low TDS with average value of 362mg/l, while the average dissolved concentrations of the trace metals (Cu, Pb, Zn, Ni, As and Cr) vary from 0.01 to 0.5mg/l. Cu, Cr and As exhibit concentrations similar to the local background concentrations (LBC) in the pristine stream water with low single metal contamination factor (CF ≈ 1). Pb, Zn and Ni are 5 folds enriched with contamination factor (CF) of >5 indicating moderate to high contamination. For the sediment phase, the adsorbed concentrations of the trace metals (Cu, Pb, Zn, Ni, As, Cr and Co) vary between 0.1 to 3.1mg/kg. These represent about 1 to 3% of the respective total metal concentrations with average values of 18.2-533.4mg/kg. Also low anthropogenic factor, AF (0.002 to 0.08) and mostly negative values (-5 to -15) of Mueller's geo-accumulation index (Igeo) for adsorbed metal contents in the sediments suggest dominant geogenic controls.However, the total metals concentrations in the sediment phase have high estimated AF of 1.1 to 9.3 and positive values of the estimated Igeo (0.9-2.0) and metal contamination index (MCI) of 2.5-8.3. All these suggest a medium to high level enrichment (of 2 to 10 factor) for most of the metals with respect to the local background concentration (LBC) in the basement bedrock units (with the exception of Cr and Ni). This is consistent with the preferential metal enrichment in the sediment phase as indicated by the estimated partitioning/distribution coefficient, K d of >1 exhibited by the total metal concentrations in the stream sediment. Nonetheless, the correlated high peaks of electrical conductivity of the stream water samples and adsorbed concentrations of some trace metals within the urban stretches are indications of point source inputs of untreated sewage into the drainage system.

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“…Four Upper Altamaha/Lower Ocmulgee clays ("Group 5") are characterized by high levels of all elements except As, which is consistently low. Thus, along the Ocmulgee/Altamaha drainage the clay deposits closest to the piedmont and mountains contain the highest concentrations of most elements (except As) and these gradually diminish along the course of the river toward the coast, as is expected according to geochemical records of mountain, piedmont, and coastal plain regions of Georgia (Crocker, 1999). Relatively high levels of Co and low levels of As are attributes that are retained in the Lower Altamaha clays and consequently enable their differentiation from Lower St. Johns clays.…”

Section: Discussionmentioning

confidence: 54%

Woodland period ceramic provenance and the exchange of Swift Creek Complicated Stamped vessels in the southeastern United States

Wallis

Boulanger

Ferguson

et al. 2010

Journal of Archaeological Science

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Geochemical mapping in Georgia, USA: a tool for environmental studies, geologic mapping and mineral exploration

Cited by 23 publications

References 17 publications

Stream sediment geochemistry of the Upper Mahaweli River Basin of Sri Lanka—Geological and environmental significance

Stream sediment geochemistry of the Upper Mahaweli River Basin of Sri Lanka—Geological and environmental significance

Hydrogeochemical Assessment of Metals Contamination in an Urban Drainage System: A Case Study of Osogbo Township, SW-Nigeria

Woodland period ceramic provenance and the exchange of Swift Creek Complicated Stamped vessels in the southeastern United States

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