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| Paper Type | : | Research Paper |
| Title | : | Characterization of Granitoids Adjoining Southern Part of Kadiri Schist Belt, Eastern Dharwar Craton, South India: Their Tectonic Implications. |
| Country | : | India |
| Authors | : | P. Sreenivasulu, P. Padmasree |
 |
: | 10.9790/0990-02210110  |
Abstract:The southern part of Kadiri Schist Belt is in juxtaposition with granitoids on either side which include TTG, TGM, and MS suites. The schist belt rocks and granitoids exhibit three phases of deformation. The granitoids are mainly medium to coarse grained and exhibit hypidiomorphic texture. Geochemical signatures suggest that the granitoids are magmatic, metaluminous, calc-alkaline and grouped under mixed origin. The field, mineralogical and chemical observations discriminate them as I-type. Petrogenetic studies indicate that polyphase polymigmatised TTG gneisses show the existence of older simatic crust which later gave rise to varied sialic crust in marginal basin environment. The calc-alkaline TGM suite points to magma mingling and mixing and fractional crystallization differentiation. The MS suite has evolved due to crustal anatexis and mantle derived melts.
Keywords : Granitoids, Kadiri Schist Belt, Magma mingling and mixing, Petrology.
[1] Barker, F. and Peterman, Z.E., 1974. Bimodal tholeiitic dacitic magmatism and the early Precambrian crust. Precambrian Res. V.1,
pp.1-12.
[2] Condie, K.C., 1981. Archaean greenstone belts (Developments in Precambrian Geology). Elsevier, Amstedam, v. 3, p. 358.
[3] Ayres, L.D., Thurston, P.C., Card, K.D. and Weber, W., 1985. Archaean supracrustal sequences: An introduction and
perspective. Geol. Assoc. Canada Spec. Pap. No.28, pp.1-5.
[4] Peate, D.W., Pearce, J.A., Hawkesworth, C.J., Collley, H., Edwards, C.M.H.and Keihirose., 1997. Geochemical variations in
Vanuatu arc lavas: the role of subducted material and a variable mantle wedge composition. Jour. Petrol., v.38(10), pp.1331-1358.
[5] Hanuma Prasad, M., Krishna Rao, B., Vasudev, V.N., Srinivasan, R. and Balaram,V.,1997. Geochemistry of Archaean bimodal
volcanic rocks of the sandur supracrustal belt, Dharwar Craton, Southern India. Jour. Geol. Soc. India., v.49, pp.307-322.
[6] Ananta lyer, G.V. and Vasudev, V.N., 1980. REE geochemistry of metabasalts from Kolar and Hutti gold bearing volcanic belts,
Karnataka craton, India. Jour. Geol. Soc. India V.21, pp. 603-604.
[7] Giritharan, T.S. and Rajamani, V., 1998. Geochemistry of the meta volcanics of the Hutti-Maski schist belt, South India:
Implications to gold metallogeny in the Eastern Dharwar Craton. Jour. Geol. Soc. India., v.51, pp.583-594.
pp.1-12.
[2] Condie, K.C., 1981. Archaean greenstone belts (Developments in Precambrian Geology). Elsevier, Amstedam, v. 3, p. 358.
[3] Ayres, L.D., Thurston, P.C., Card, K.D. and Weber, W., 1985. Archaean supracrustal sequences: An introduction and
perspective. Geol. Assoc. Canada Spec. Pap. No.28, pp.1-5.
[4] Peate, D.W., Pearce, J.A., Hawkesworth, C.J., Collley, H., Edwards, C.M.H.and Keihirose., 1997. Geochemical variations in
Vanuatu arc lavas: the role of subducted material and a variable mantle wedge composition. Jour. Petrol., v.38(10), pp.1331-1358.
[5] Hanuma Prasad, M., Krishna Rao, B., Vasudev, V.N., Srinivasan, R. and Balaram,V.,1997. Geochemistry of Archaean bimodal
volcanic rocks of the sandur supracrustal belt, Dharwar Craton, Southern India. Jour. Geol. Soc. India., v.49, pp.307-322.
[6] Ananta lyer, G.V. and Vasudev, V.N., 1980. REE geochemistry of metabasalts from Kolar and Hutti gold bearing volcanic belts,
Karnataka craton, India. Jour. Geol. Soc. India V.21, pp. 603-604.
[7] Giritharan, T.S. and Rajamani, V., 1998. Geochemistry of the meta volcanics of the Hutti-Maski schist belt, South India:
Implications to gold metallogeny in the Eastern Dharwar Craton. Jour. Geol. Soc. India., v.51, pp.583-594.
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| Paper Type | : | Research Paper |
| Title | : | Determination of optimum drilling parameters using 8.5 inch tricone bits in olkaria geothermal steamfield, Kenya |
| Country | : | Kenya |
| Authors | : | Peter Muchendu, Dr. Githiri J.G, Engineer Njeri |
|
: | 10.9790/0990-02211128 |
Abstract:The performance of drilling bits has a direct influence on cost and increase in the rate of penetration translates significantly to cost and time saving. From a total sample of 56 wells, approximately 450 tri-cone bits were consumed at a cost of KSh 200Millions.
[1]. Ngugi P.K.,2002: Technical, Economic and Institutional evaluation of adopting directional drilling by Kengen, Kenya ,UNU report 2002 (pg 124-125
[2]. Gabolde., and Nguyen, J.P.,1991:Drilling Data Handbook. Gulf Publ. Co., Houstin TX, 542pp
[3]. Baker Hughes,1998:Navi-drill motor handbook. Baker Hughes INTEG Incorporated.
[4]. IADC,1992: Drilling Manual (11th ed). International Association of Drilling Contractor, USA.
[5]. Millheim & Chenevert, 1991:Applied Drilling Engineering (2nd ed) ,502pp
[2]. Gabolde., and Nguyen, J.P.,1991:Drilling Data Handbook. Gulf Publ. Co., Houstin TX, 542pp
[3]. Baker Hughes,1998:Navi-drill motor handbook. Baker Hughes INTEG Incorporated.
[4]. IADC,1992: Drilling Manual (11th ed). International Association of Drilling Contractor, USA.
[5]. Millheim & Chenevert, 1991:Applied Drilling Engineering (2nd ed) ,502pp
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| Paper Type | : | Research Paper |
| Title | : | Geochemical Analyses of Domestic Groundwater Sources in Okeagbe-Akoko, Southwestern Nigeria |
| Country | : | Nigeria |
| Authors | : | Muslim B. Aminu, Opemipo, O. Ajayi, Olusola G. Adelabu |
|
: | 10.9790/0990-02212934 |
Abstract: Geochemical analyses of domestic groundwater sources within Okeagbe-Akoko, South-western Nigeria have been conducted. A total of twenty (20) water samples, sourced from hand-dug wells, deep wells and streams, were analyzed for their physico-chemical characteristics, with the aim of determining their suitability for local domestic consumption. The physico-chemical analyses involved the determination of Electrical Conductivity (EC), Acidity (pH), Total Dissolved Solids (TDS) and the determination of the concentration of a heavy metals suite consisting of Zinc (Zn), Nickel (Ni), Cadmium (Cd), Copper (Cu), Lead (Pb), and Chromium (Cr), using the Atomic Absorption Spectrometry (AAS). Result ranges obtained for the physical parameters were pH: 5.82 to 7.08, total dissolved solids: 43 to 492 mg/l, and electrical conductivity: 71.681 to 820.164 μs/cm. The heavy metal concentrations for Cu and Zn ranged from 0.001 to 0.014 mg/l and 0.001 to 0.030 mg/l respectively. Ni, Cd, Pb and Cr were not detected in any of the water samples. All determined physico-chemical parameters were well below the current World Health Organization (WHO) acceptable limits for safe water sources. This indicates that the domestic water sources in the area are relatively contaminant free and safe for domestic use. The Cu2+ concentration distribution pattern however, provides insight into the likely nature of heavy metal contaminant migration path in the event of an impact.
Keywords: Domestic water sources, physico-chemical properties, water quality, Atomic Absorption Spectrometry (AAS), heavy metal concentration.
Keywords: Domestic water sources, physico-chemical properties, water quality, Atomic Absorption Spectrometry (AAS), heavy metal concentration.
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[2] A. A. Fakere, G. Fadairo, and O. Oriye, Domestic Waste Management and Urban Residential Environment: Focus on Akure, Nigeria. International Journal of Engineering and Technology, 2(5), 2012, 878 - 887.
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[2] A. A. Fakere, G. Fadairo, and O. Oriye, Domestic Waste Management and Urban Residential Environment: Focus on Akure, Nigeria. International Journal of Engineering and Technology, 2(5), 2012, 878 - 887.
[3] A. A. Agboola, and C. R. Obatolu, Problems and Prospects of Maintaining Continuous Arable Production in the Humid Tropics through Soil Organic Matter Management, International symposium on Role of Biology in Resolving Food Crisis in Africa, Yamoussoukro, Cote d'Ivoire, July 1989.
[4] T. D. T. Oyedotun, and O. Obatoyinbo, Hydro-geochemical Evaluation of Groundwater Quality in Akoko North West local government area of Ondo State, Nigeria, Ambi-Agua, Taubaté. 7, 2012, 67-80.
[5] C. O. Okagbue, Hydrology and Chemical Characteristics of Surface and Groundwater Resources of the Okigwi area and environs, Imo State, Nigeria. In: Ofoegbu, C.O. (Ed.). Groundwater and mineral resources of Nigeria. (Braunschweig: Vieweg and Sohn, Germany, 1988) 3 - 16.