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The Central Kenya Peralkaline Province: Insights Into the Evolution of Peralkaline Salic Magmas
The central Kenya peralkaline province: Insights into the evolution of peralkaline salic magmas. Ray Macdonald, Bruno Scaillet To cite this version: Ray Macdonald, Bruno Scaillet. The central Kenya peralkaline province: Insights into the evolution of peralkaline salic magmas.. Lithos, Elsevier, 2006, 91, pp.1-4, 59-73. 10.1016/j.lithos.2006.03.009. hal-00077416 HAL Id: hal-00077416 https://hal-insu.archives-ouvertes.fr/hal-00077416 Submitted on 10 Jul 2006 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. The central Kenya peralkaline province: Insights into the evolution of peralkaline salic magmas R. Macdonalda, and B. Scailletb aEnvironment Centre, Lancaster University, Lancaster LA1 4YQ, UK bISTO-CNRS, 1a rue de la Férollerie, 45071 Orléans cedex 2, France Abstract The central Kenya peralkaline province comprises five young (< 1 Ma) volcanic complexes dominated by peralkaline trachytes and rhyolites. The geological and geochemical evolution of each complex is described and issues related to the development of peralkalinity in salic magmas are highlighted. The peralkaline trachytes may have formed by fractionation of basaltic magma via metaluminous trachyte and in turn generated pantellerite by the same mechanism. Comenditic rhyolites are thought to have formed by volatile-induced crustal anatexis and may themselves have been parental to pantelleritic melts by crystal fractionation. -
Project: Menengai Geothermal Development Project Country: Kenya
Language: English Original: English PROJECT: MENENGAI GEOTHERMAL DEVELOPMENT PROJECT COUNTRY: KENYA PROJECT APPRAISAL REPORT November, 2011 Team Leader T. BAH, Senior Power Engineer ONEC.2 3184 Team Members Y. ARFAOUI, Chief Renewable Energy Specialist ONEC.3 2308 K. NTOAMPE, Principal Environmentalist ONEC.3 2707 M. HASSANE, Principal Procurement Specialist KEFO 6243 D. MCIVER, Principal Legal Counsel GECL.1 2678 Project F. KANONDA, Senior Financial Analyst ONEC.2 2723 Appraisal R. ARON, Senior Social Development Specialist ONEC.3 2792 Team E. NGODE, Finance Management Specialist KEFO 6230 A. KLEVCHUK, Financial Modelling Specialist OPSM 1975 Sector Manager E. NEGASH, Officer In Charge ONEC.2 3081 Sector Director H. CHEIKHROUHOU ONEC 2140 Regional Director G. NEGATU OREA 2040 N. KULEMEKA, Chief Socio‐Economist ONEC.3 2336 M. CISSE, Chief Investment Officer OPSM.3 1906 Peer R. CLAUDET, Chief Investment Officer OPSM.3 2666 Reviewers G. MAKAJUMA , Infrastructure Specialist KEFO 6073 Martin Njoroge Mwangi, External Peer Reviewer n/a n/a TABLE OF CONTENTS 1 STRATEGIC THRUST AND RATIONALE .................................................................... 1 1.1 Project Linkages with Country Strategy and Objectives ............................................ 1 1.2 Rationale for Bank Involvement ................................................................................. 1 1.3 Aid Coordination ......................................................................................................... 3 2 PROJECT DESCRIPTION ............................................................................................... -
The Magical Kenya Signature Experiences Collection Souvenir Booklet & Microsite Welcome to Magical Kenya!
The Magical Kenya Signature Experiences Collection Souvenir Booklet & Microsite Welcome to Magical Kenya! Kenya is a multi-experiential destination offering unique, diverse, memorable and authentic travel experiences that lasts a lifetime. The magic of Kenya cannot be fully captured in written or spoken word. One has to be here, to see, feel and experience it in order to appreciate the beauty of our natural and human attractions. Welcome home and create your own kind of magic! MKSE Collection 2021 -2022 Karen Blixen By National Museums of Kenya The museum was Baron Karen Blixen’s former home between 1917 and 1931. She was a talented Danish author, poet, artist and a determined coffee farmer whose life was made globally famous by the Oscar award winning film, “Out of Africa’’. The museum offers intact Karen house and artefacts such as Antique pieces of furniture, early age Farm machinery among others, natural history, education programs, gift shop and grounds for events https://www.museums.or.ke/karen-blixen/ The Forest Adventure By African Forest Lodges The Forest Adventure Centre offers the thrill of ‘edummersion’ into the wonder of Kenya’s deep and diverse forest. We build respect and understanding of these towering lungs of nature through exhilarating and unique experiences in the forest (paintballing, archery, camping), through the forest (Mountain Biking, E-bikes, Footgolf, Forest Rovers, Guided Nature Walks, Horse Riding) and even over the forest (the longest Zip lines in Central and Eastern Africa)! https://theforest.co.ke/ Catching Light and Touching Fire By Kitengela Hot Glass Kitengela Hot Glass is a glass blowing company that creates original works which are 100% recycled & 100% Kenyan. -
Working Paper Or Information Paper
APIRG/19 WP/14 Appendix 3.2J INTERNATIONAL CIVIL AVIATION ORGANIZATION VOLCANIC ASH CONTINGENCY PLAN AFI REGION First Edition - October 2012 THIS DOCUMENT IS ISSUED BY THE DAKAR AND NAIROBI ICAO REGIONAL OFFICES UNDER THE AUTHORITY OF THE APIRG 1 Page 2 of 32 Volcanic Ash Contingency Plan – AFI Region FOREWARD Within and adjacent to the Africa and Indian Ocean (AFI) Region there are areas of volcanic activities which are likely to affect flight in the AFI Region. The major volcanoes in the region are located in the following States: Algeria, Cameroon, Cape Verde Islands, Chad, Comoros Island, Democratic Republic of Congo, Djibouti, Eritrea, Ethiopia, France (Reunion Island), Kenya, Madagascar, Mali, Niger, Nigeria, Rwanda, Sao Tome and Principe, Spain (Canary Islands, Madeira), Sudan, Tanzania and Uganda. The names of the concerned volcano are listed in APPENDIX K (source: Smithsonian Institution). This document is the AFI Air Traffic Management (ATM) Volcanic Ash Contingency Plan which sets out standardised guidelines and procedures for the provision of information to airlines and en-route aircraft before and during a volcanic eruption. Volcanic contamination, of which volcanic ash is the most serious, is a hazard for safe flight operations. Mitigating the hazards posed by volcanic ash in the atmosphere and/or at the aerodrome cannot be resolved in isolation but through collaborative decision-making (CDM) involving all stakeholders concerned. During an eruption volcanic contamination can reach and exceed the cruising altitudes of turbine-powered -
Travel Advisories and Their Impact on Tourism-Case Study of Kenya 2000 – 2014
UNIVERSITY OF NAIROBI INSTITUTE OF DIPLOMACY AND INTERNATIONAL STUDIES TRAVEL ADVISORIES AND THEIR IMPACT ON TOURISM- CASE STUDY OF KENYA 2000 – 2014 RAZOAH M. KEREDA VITISIA R50/ 67763/ 2013 A RESEARCH PROJECT SUBMITTED IN PARTIAL FULFILLMENT OF DEGREE OF MASTER OF ARTS IN INTERNATIONAL STUDIES, UNIVERSITY OF NAIROBI 2015 i DECLARATION This project is my original work and has never been presented to any other university for the award of a Master‟s Degree. Signature………………………… Date…………………………………… RAZOAH MUDEMA VITISIA R50/ 67763/ 2013 Supervisor This project has been submitted for examination with my approval as university supervisor. Signature……………………………. Date……………………………… Name: MR. GERRISHON K. IKIARA ii DEDICATION I dedicate this work to my family: my husband Ken Vitisia, my son Brian Vitisia and my daughter Brenda Vitisia. One would never ask for a better family than what I have. Thanks for your moral support and understanding during my study period. To God be the Glory for His sufficient Grace and Mercies. iii ACKNOWLEDGEMENT I offer my gratitude to the IDIS Faculty, staff and my fellow students at the University of Nairobi who have inspired me to undertake work in this field by providing insightful Knowledge on this subject matter and international relations. I owe particular thanks to my Supevisor Mr. Gerrishon Ikiara for his consisent feedback and whose penetrating questions taught me to think more deeply through the process. Special thanks to my parents, siblings, and friends for supporting and encouraging me the entire time. I can attest to the saying “What has a beginning has an end”. iv TABLE OF CONTENTS Declaration .................................................................................................................... -
Evaluation of Volcanic Ash Along Maai Mahiu-Narok Road and Its Effect on Road Stability After Long Rains
UNIVERSITY OF NAIROBI Evaluation of volcanic ash along Maai Mahiu-Narok road and its effect on road stability after long rains AMOLLO KENNETH OTIENO F16/39624/2011 A project submitted as a partial fulfillment Of the requirement for the award of the degree of BACHELOR OF SCIENCE IN CIVIL ENGINEERING 2016 i Abstract Volcanic soils are widely distributed group of soils, which cover significant parts of the world's surface including areas occupied by urban settlements, structures and infrastructure, and may create geo-engineering problems. These soils exhibit a distinctive behavior that is a consequence of their formation history, mineralogy and structure. Some part of the subsoil of a large area along Maai Mahiu - Narok Road in Kenya mainly consists of volcaniclastic deposits. This paper presents the results of the part of a research programme aiming at geotechnically characterizing the uppermost layer of this volcaniclastic sequence, particularly focusing on its collapse potential, shear behavior and the influence of microstructure on these behaviours. In addition, its main features were investigated and the stability of sub-vertical cuts in this soil was also assessed. The experimental investigation mainly consisted of index and classification tests, consolidation and direct shear box tests to assess the collapse potential and shear behaviour of the soil, respectively. Matric suction of the samples was also determined for preliminary evaluation of the influence of suction on collapse and shear behaviors of the soil. In addition, thin-section studies, X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis were also conducted to determine mineralogical and microstructural features and to evaluate their influences on the mechanical behavior of the volcanic soil. -
Country Update Report for Kenya 2010–2015
Proceedings World Geothermal Congress 2015 Melbourne, Australia, 19-25 April 2015 Country Update Report for Kenya 2010-2014 Peter Omenda and Silas Simiyu Geothermal Development Company, P. O. Box 100746, Nairobi 00101, Kenya [email protected] Keywords: Geothermal, Kenya rift, Country update. ABSTRACT Geothermal resources in Kenya have been under development since 1950’s and the current installed capacity stands at 573 MWe against total potential of about 10,000 MWe. All the high temperature prospects are located within the Kenya Rift Valley where they are closely associated with Quaternary volcanoes. Olkaria geothermal field is so far the largest producing site with current installed capacity of 573 MWe from five power plants owned by Kenya Electricity Generating Company (KenGen) (463 MWe) and Orpower4 (110 MWe). 10 MWt is being utilized to heat greenhouses and fumigate soils at the Oserian flower farm. The Oserian flower farm also has 4 MWe installed for own use. Power generation at the Eburru geothermal field stands at 2.5 MWe from a pilot plant. Development of geothermal resources in Kenya is currently being fast tracked with 280 MWe commissioned in September and October 2014. Production drilling for the additional 560 MWe power plants to be developed under PPP arrangement between KenGen and private sector is ongoing. The Geothermal Development Company (GDC) is currently undertaking production drilling at the Menengai geothermal field for 105 MWe power developments to be commissioned in 2015. Detailed exploration has been undertaken in Suswa, Longonot, Baringo, Korosi, Paka and Silali geothermal prospects and exploration drilling is expected to commence in year 2015 in Baringo – Silali geothermal area. -
Kariandusi an Online Guide to the Museum Kariandusi – a Site in Kenya’S Rift Valley
Kariandusi an online guide to the Museum Kariandusi – a site in Kenya’s Rift Valley Kariandusi was one of the first early archaeological sites to be discovered in East Africa, which is now famed as a cradle of human origins. The sites lie on the eastern side of the Gregory Rift Valley, about 120 km NNW of Nairobi, and about 2 km to the east side of Lake Elmenteita. From Kariandusi you can look across the width of the Rift Valley. The Nakuru- Elmenteita basin is flanked by Menengai volcano on the north, and by the volcanic pile of Mount Eburru on the south – visible from Kariandusi. Much geological evidence shows that at times in the past this basin has been occupied by large lakes, sometimes reaching levels hundreds of metres higher than the present Lakes Nakuru and Elmenteita. Lying at a height of about 1880 m (nearly 6200 ft, the Kariandusi sites would have been near the side of one of these former lakes. Impressive scarps of the Rift wall rise less than one kilometre behind the sites, continuing as the Bahati Escarpment to the north, and the Gilgil Escarpment further south. The scarps behind rise to 2250 m (7400 ft) less than 3 km from the sites. The site area from the North with the Rift Valley scarp In the background Close to the sites the scarps of the Rift Valley wall are dissected by the valley of the Kariandusi River, which has a relatively short course, fed partly by waters from Coles' Hot Springs, only 2 km from the sites. -
Geothermal Potential of the Kenya Rift
Presented at Short Course III on Exploration for Geothermal Resources, organized by UNU-GTP and KenGen, at Lake Naivasha, Kenya, October 24 - November 17, 2008. GEOTHERMAL TRAINING PROGRAMME Kenya Electricity Generating Co., Ltd. STATUS OF GEOTHERMAL EXPLORATION IN KENYA AND FUTURE PLANS FOR ITS DEVELOPMENT Peter A. Omenda Kenya Electricity Generating Company Ltd. (KenGen) P.O. Box 785, Naivasha KENYA [email protected] ABSTRACT The high temperature geothermal prospects in Kenya are located within and are associated with the development of the Kenya Rift. Kenya Rift is a continental scale volcano-tectonic feature that stretches from northern to southern Africa. Development of the Rift started during the Oligocene (30million years ago) and activity has continued to recent times. The last 2 million years saw the development of large shield volcanoes within the axis of the rift. These centres are the most important geothermal prospects within the rift. Association between rifting and most of the occurrences of geothermal energy is mainly due to shallow magma chambers underneath the young volcanoes within the rift axis. KenGen in collaboration with the Ministry of Energy of the Government of Kenya has undertaken detailed surface studies of most of the prospects in the central sector of the rift which comprises Suswa, Longonot, Olkaria, Eburru, Menengai, Lakes Bogoria and Baringo, Korosi and Paka volcanic fields. Electric power is currently being generated at Olkaria with 130MWe installed while exploration drilling has been undertaken at Eburru and a 2.5MWe pilot plant is planned for development by KenGen and commissioning by 2009. Common methods that have been used by KenGen during exploration expeditions include geology (lithology, geochronology, structures); geophysics (seismic, gravity, magnetic, and resistivity); geochemistry (fluid and thermometry), heat flow and environmental baseline assessments. -
Private Health Sector Assessment in Kenya
WORLD BANK WORKING PAPER NO. 193 Private Health Sector Assessment in Kenya THE WORLD BANK WORLD BANK WORKING PAPER NO. 193 Private Health Sector Assessment in Kenya Jeff Barnes Barbara OHanlon Frank Feeley III Kimberly McKeon Nelson Gitonga Caytie Decker Copyright © 2010 The International Bank for Reconstruction and Development/The World Bank 1818 H Street, N.W. Washington, D.C. 20433, U.S.A. All rights reserved Manufactured in the United States of America First Printing: April 2010 Printed on recycled paper 1234 13121110 World Bank Working Papers are published to communicate the results of the Bank’s work to the development community with the least possible delay. The manuscript of this paper therefore has not been prepared in accordance with the procedures appropriate to formally edited texts. Some sources cited in this paper may be informal documents that are not readily available. The findings, interpretations, and conclusions expressed herein are those of the author(s) and do not necessarily reflect the views of the International Bank for Reconstruction and Development/The World Bank and its affiliated organizations, or those of the Executive Directors of The World Bank or the governments they represent. The World Bank does not guarantee the accuracy of the data included in this work. The boundaries, colors, denominations, and other information shown on any map in this work do not imply any judgment on the part of The World Bank of the legal status of any territory or the endorsement or acceptance of such boundaries. The material in this publication is copyrighted. Copying and/or transmitting portions or all of this work without permission may be a violation of applicable law. -
The KRISP 90 Seismic Experiment-A Technical Revidw
TECTONOPHYSICS ELSEVIER Tectonophysi~ 236 (1994) 33-60 The KRISP 90 seismic experiment-a technical revidw C. Prodehl a, J. Mechie a~1,U. Achauer a*2,G.R. Keller b, M.A. Khan ‘, W.D. Mooney *, S.J. Gaciri e, J.D. Obel f a Institute of Geophysics, University of Kdwuhe, Hertzstrasse 16,Karisruhe, D-76I87Karlsruhe, German> b Descent of Geolog~al Sciences, Universe of Texas at El Paso, Texas, USA ’ Department of Geology, University of Leicester, Leicester, UK d U.S. Geological Survey, Menlo Park, Cal& USA ’ Department o$ Geology, University of Nairobi, Nairobi, Kenya Survey of Kenya, Nairobi, Kenya Received 15 July 1992; accepted 5 August 1993 Abstract On the basis of a preliminary experiment in 1985 (KRISP 851, a seismic refraction/wide-angle refliection survey and a teleseismic tomography experiment were jointly undertaken to study the lithospheric structure of the Kenya rift down to depths of greater than 200 km. This report serves as an introduction to a series of subseiquent papers and will focus on the technical description of the seismic surveys of the main KRISP 90 effort. The seismic refraction/wide-angle reflection survey was carried out in a &week period in January and Febwary 1990. It consisted of three profiles: one extending along the rift valley from Lake Turkana to Lake Magadi, on& crossing the rift at Lake Baringo, and one located on the eastern flank of the rift proper. A total of 206 mobile vektical-compo- nent seismographs, with an average station interval of about 2 km, recorded the energy of underwater and borehole explosions to distances of up to about 550 km. -
Geology Natvasha Area
Report No. 55 GOVERNMENT OF KENYA* MINISTRY OF COMMERCE AND INDUSTRY GEOLOGICAL SURVEY OF KENYA GEOLOGY OF THE NATVASHA AREA EXPLANATION OF DEGREE SHEET 43 S.W. (with coloured geological map) by A. O. THOMPSON M.Sc. and R. G. DODSON M.Sc. Geologists Fifteen Shillings - 1963 Scanned from original by ISRIC - World Soil Information, as ICSU World Data Centre for Soils. The purpose is to make a safe depository for endangered documents and to make the accrued information available for consultation, following Fair Use Guidelines. Every effort is taken to respect Copyright of the materials within the archives where the identification of the Copyright holder is clear and, where feasible, to contact the originators. For questions please contact soil.isric(a>wur.nl indicating the item reference number concerned. ISRIC LIBRARY ü£. 6Va^ [ GEOLOGY Wageningen, The Netherlands | OF THE EXPLANATION OF DEGREE SHEET 43 S.W. (with coloured geological map) by A. O. THOMPSON M.Sc. and R. G. DODSON M.Sc. Geologists FOREWORD Previous to the undertaking of modern geological surveys the Naivasha area, in the south-central part of Kenya Rift Valley, was probably the best known part of the Colony from the geological point of view. This resulted partly from ease of access, as from the earliest days the area was crossed by commonly used routes of com munication, and partly from the presence of lakes, which in Pleistocene times were much larger and made the country an ideal habitat for Prehistoric Man and animals that have left their traces behind them in the beds that were then deposited.