Research Papers/Topics in Earth Science

Effects Of Rainfall Variability On Farming Activities In Machakos Sub County, Kenya

ABSTRACTVarying climatic conditions with increased uncertainty mainly in rainfall and temperature aresalient features in marginal areas globally, adversely affecting farming activities particularly inAfrica. Kenya experiences variations of annual rainfall with considerable uncertainty. Thesevariations ranging from below 500mm to above 2000mm annually, cause droughts and floodsrespectively, affecting farming activities and yields. This study focused on Machakos subCounty, a semi arid area, Eas...

Environmental Consequences Related To Poor Adherence To Standard Mining Practices By Artisanal And Small Scale Miners: The Case Of Ashiraq Mines, Tanzania

AbstractThis study assesses the contribution of small scale mining towards environmental degradation. Field observation, insitumeasurements and laboratory analysis were conducted to determine environmental consequences caused by poor adherence tostandard mining practices by artisanal and small scale miners in Ashiraq Mines in Tanzania. Field observation revealedsignificant land and soil disturbance in the study area such as the existence of abandoned old workings. Direct measurementsof pH val...

Sorption-Desorption Tests On The Performance Of Non-Hazardous Industrial Wastes In Decreasing Leachability Of Trace Metals On Contaminated Lands

Box 35176, Dar es Salaam, TanzaniaAbstractSoil stabilization by addition of industrial solid wastes in order to increase trace metals retention and (a minor secondary effect) to dilute their concentrations is an environmentally friendly and attractive soil remediation process that attenuates trace metals impact. In this study, non-hazardous industrial by-products (sugar foam, gypsum, zeolitic materials and fly ashes) were tested using laboratory scaleSTECH,4(2), S/NO 10, MAY, 201587Copyright ...

Sorption Characteristics Of Hexavalent Chromium In The Soil Based On Batch Experiment And Their Implications To The Environment

AbstractThe objective of this experimental study was to determine the kinetics andequilibrium sorption of Cr(VI) in soils collected from Hengshui City of HebeiProvince, China, based on batch experiments. The main concentration for thispaper is on the effect of soil pH, solute concentration and ionic strength as thevariable factors in the sorption of Cr(VI) in soils and the assessment of theirimplications to the environment. Atomic Absorption Spectrophotometer(AAS) was used for Cr(III) analysi...

Assessment Of Soil Pollution (Heavy Metal) From Small Scale Gold Mining Activities: A Case Of Nyarugusu Gold Mines, Geita – Tanzania

Abstract This research study investigated the concentrations of some heavy metals (Hg, Pb, Cu and Zn) in soil samples collected from Nyarugusu Gold Mines (located in Geita Region, Tanzania) using Atomic Absorption Spectroscopy (AAS). The results obtained showed that average concentration for Hg (25.45 mg/kg) was higher than the tolerable limits recommended by the United States Environmental Protection Agency (US-EPA). The average concentrations for Pb (10.14 mg/kg), Cu (19.75 mg/kg) and ...

Palynological Analysis Of The St-5 And St -6 Wells, Offshore Tano Basin, South Western Ghana: Implications For Stratigraphy And Paleoenvironment

ABSTRACTMiospores and dinoflagellates recovered from sediments from the ST – 5 and ST – 6wells, offshore Tano Basin, Western Ghana were studied in order to determine theirages, establish palynostratigraphy and determine environments of deposition. Based onFirst Appearance Datum (FAD) and (LAD) of marker palynomorphs, three (3) biozoneswere erected for miospores and dinoflagellates respectively. The characteristic taxa ofeach of the biozones have been discussed in detail. The three biozone...

Petrology And Geochemistry Of The K-Rich Granitoids In The Bole-Nangodi Belt Of The Paleoproterozoic Birimian Terrane Of Ghana

ABSTRACTThe Paleoproterozoic Birimian province of Ghana is made up basically of parallel and equally spaced NE-SW trending greenstone belts (with the exception of one which trends N-S), one of which is the Bole-Nangodi belt which outcrops in the northern parts of Ghana. These belts petrologically consists of metasedimentary and metavolcanic rocks, both of which are intruded by granitoids of various ages. These granitoids can broadly be grouped into four; the Cape Coast, Winneba, Dixcove and B...

Palynology, Palynofacies And Hydrocarbon Potential Of Cretaceous Sediments In The Offshore Tano Basin

ABSTRACT Data from HD-1 well, offshore Tano Basin was subjected to optical and organic geochemical analysis to reveal the palynostratigraphy, palaeoenvironments and hydrocarbon potential of the said well. Organic geochemical studies of Total Organic Carbon and Rock-Eval pyrolysis analysis as well as the microscopic investigation of the 44 slides of ditch cuttings from a depth of 3370ft – 7290ft shows four (4) types of Palynofacies associations in the HD-1 well based on the sedimentary...

Hydrogeological And Hydrochemical Characterization of Crystalline Basement Rocks in The Upper District Region; The Talensi District

ABSTRACT Groundwater remains the single most important source of water in Talensi district for various purposes. Notwithstanding, little research on the quality and sustainability of the resource in the district exist. Hence a comprehensive quality assessment and a quantification of groundwater resources in the shallow unconfined aquifers of the Talensi district has been conducted using conventional graphical methods, mass balance and multivariate statistical techniques coupled with ste...

Hydrogeochemistry And Isotopic Study Of The Origin Of Underground Mine Water At Golden Star Bogoso/Prestea Limited (New Century Mines

ABSTRACTHydrogeochemical study of the origin of underground mine water at Golden Star Bogoso/ Prestea Limited (New Century Mines) was carried out to determine the geochemical processes controlling surface water, groundwater and underground mine water and to identify the source of recharge to the underground water in the mines; investigate the hydrochemical facies of groundwater in the various aquifers (gallaries), and identify the relationship between surface water and groundwater, and underg...

Seismic Interpretation Of “XY” Field In The South-Eastern Niger Delta

ABSTRACT Prospective evaluation of “XY” field in southwestern offshore Niger Delta was carried out with a view to delineate the structural and stratigraphic traps present in the study area. The research methodology involved horizon and fault mapping to produce subsurface structural maps. Attributes used to analyze the field under study includes: Variance time slice which was used to illuminates the main fault structure on the field and aid as guide to proper mapping. Similarly, this...

Physico-Chemical Characteristics Of Underground Water In Alaago-Alapoti Areas Ogun State, South Western Nigeria

ABSTRACT Alaago-Alapoti area constitutes part of the Eestern Dahomey Basin of South-Western Nigeria and it is characterized by different formations. Samples were collected from this area and were subjected to the laboratory for test. Nine smaples were collected from Alaago-Alapo area, five hand-dug wells and four boreholes sampled and investigated in the persent study. This study characterises the physicchemical quality of ground water obtained from the hang-dug wells and boreholes. To g...

Geotechnical Suitability Of Laterite From Onihale/Isorosi Road, Ijako-Ifo Burrow Pit As A Subgrade Material

ABSTRACT Laterites are soils that formed from the weathering of the basement complex and are rich in secondary oxides of Iron and Aluminum. It‟s red colouration is due to it‟s high iron content. Laterites are mostly found in Tropical regions which are characterized by distinct dry and wet seasons. Laterites are mainly used in the construction ofroads either as a subgrade or as a sub-base material. Geotechnical evaluation is one of the effective means of detecting and solving pre and ...

Geophysical Investigation Of Salt-Polluted Groundwater In Ogba-Iyo/Blessed Community, Ijoko, Southwestern Nigeria

ABSTRACT Geo-electrical resistivity techniques are increasingly being applied in addressing a wide range of hydrological, environmental, and geotechnical problems. This is due to their effectiveness in near-surface characterization. Seven (7) vertical electrical soundings (VES) was integrated with 2-D geo-electrical resistivity in three locations and three traverses to characterize the near-surface and subsurface and also delineate the underlying aquifer properties in the sedimentary ter...

Geophysical And Physico-Chemical Characteristics Of Ground Water In Alapoti And Its Environs, Ogunstate, South-Western Nigeria

ABSTRACT Electrical resistivity method involving the2-D surveying was carried out within the sedimentary complexterrain of Alapoti Ogun State South Western Nigeria with a view of estimating the geo electric layer parameters (resistivity and thickness),to identify the aquifer types and evaluate the ground water potential and over burden protective capacity over the aquifer. 


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