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Tectonic and Climatic Control on Evolution of Rift Lakes in the Central Kenya Rift, East Africa
Quaternary Science Reviews 28 (2009) 2804–2816 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Tectonic and climatic control on evolution of rift lakes in the Central Kenya Rift, East Africa A.G.N. Bergner a,*, M.R. Strecker a, M.H. Trauth a, A. Deino b, F. Gasse c, P. Blisniuk d,M.Du¨ hnforth e a Institut fu¨r Geowissenschaften, Universita¨t Potsdam, K.-Liebknecht-Sr. 24-25, 14476 Potsdam, Germany b Berkeley Geochronology Center, Berkeley, USA c Centre Europe´en de Recherche et d’Enseignement de Ge´osciences de l’Environement (CEREGE), Aix en Provence, France d School of Earth Sciences, Stanford University, Stanford, USA e Institute of Arctic and Alpine Research, University of Colorado, Boulder, USA article info abstract Article history: The long-term histories of the neighboring Nakuru–Elmenteita and Naivasha lake basins in the Central Received 29 June 2007 Kenya Rift illustrate the relative importance of tectonic versus climatic effects on rift-lake evolution and Received in revised form the formation of disparate sedimentary environments. Although modern climate conditions in the 26 June 2009 Central Kenya Rift are very similar for these basins, hydrology and hydrochemistry of present-day lakes Accepted 9 July 2009 Nakuru, Elmenteita and Naivasha contrast dramatically due to tectonically controlled differences in basin geometries, catchment size, and fluvial processes. In this study, we use eighteen 14Cand40Ar/39Ar dated fluvio-lacustrine sedimentary sections to unravel the spatiotemporal evolution of the lake basins in response to tectonic and climatic influences. We reconstruct paleoclimatic and ecological trends recor- ded in these basins based on fossil diatom assemblages and geologic field mapping. -
PROFILES of ATTRACTION SITES-ELGEYO MARAKWET. Tourist Attractions in Elgeyo Marakwet County Include Sports Tourism, Rivers, a Na
PROFILES OF ATTRACTION SITES-ELGEYO MARAKWET. Tourist attractions in Elgeyo Marakwet County include Sports Tourism, Rivers, A national reserve, waterfalls and the hills and escarpments. Rimoi National Reserve The National Reserve is a protected area in the kerio valley along the escarpment of the Great Rift Valley. The 66 square kilometers (25sq mi) reserve was created in 1983 and is managed by the Kenya Wildlife Service. The isolated Kerio Valley lies between the Cherangani Hills and the Tugen Hills with the Elgeyo Escarpment rising more than 1,830 meters (6,000ft) above the valley in places. The valley is 4,000 feet (1,200m) deep. It has semi-tropical vegetation on the slopes, while the floor of the valley is covered by dry thorn bush. The most comfortable time of the year is in July and August when the rains have ended and the temperatures are not excessive. The reserve is on the west side of the Kerio River, while the Lake Kamnarok National Reserve is on the east side. The reserve has beautiful scenery, prolific birdlife and camping site in the bush beside Lake Kamnarok. Gazzement of the conservation area was done to protect wildlife from rampant poaching which was going on at the time. A fence was also put up to address human wildlife conflicts. It provides unique geological scenery & biodiversity and is one of the few protected areas within the spectacular Kerio Valley. The main attraction is the groups of elephants, Culture and scenery of the Kerio valley. The Reserve has earth and gravel road network which make for an adventurous outing. -
Conserving Wildlife in African Landscapes Kenya’S Ewaso Ecosystem
Smithsonian Institution Scholarly Press smithsonian contributions to zoology • number 632 Smithsonian Institution Scholarly Press AConserving Chronology Wildlife of Middlein African Missouri Landscapes Plains Kenya’sVillage Ewaso SitesEcosystem Edited by NicholasBy Craig J. M. Georgiadis Johnson with contributions by Stanley A. Ahler, Herbert Haas, and Georges Bonani SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of “diffusing knowledge” was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: “It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge.” This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, com- mencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series: Smithsonian Contributions to Anthropology Smithsonian Contributions to Botany Smithsonian Contributions to History and Technology Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Museum Conservation Smithsonian Contributions to Paleobiology Smithsonian Contributions to Zoology In these series, the Institution publishes small papers and full-scale monographs that report on the research and collections of its various museums and bureaus. The Smithsonian Contributions Series are distributed via mailing lists to libraries, universities, and similar institu- tions throughout the world. Manuscripts submitted for series publication are received by the Smithsonian Institution Scholarly Press from authors with direct affilia- tion with the various Smithsonian museums or bureaus and are subject to peer review and review for compliance with manuscript preparation guidelines. -
Short-Lived Increase in Erosion During the African Humid Period: Evidence from the Northern Kenya Rift ∗ Yannick Garcin A, , Taylor F
Earth and Planetary Science Letters 459 (2017) 58–69 Contents lists available at ScienceDirect Earth and Planetary Science Letters www.elsevier.com/locate/epsl Short-lived increase in erosion during the African Humid Period: Evidence from the northern Kenya Rift ∗ Yannick Garcin a, , Taylor F. Schildgen a,b, Verónica Torres Acosta a, Daniel Melnick a,c, Julien Guillemoteau a, Jane Willenbring b,d, Manfred R. Strecker a a Institut für Erd- und Umweltwissenschaften, Universität Potsdam, Germany b Helmholtz-Zentrum Potsdam, Deutsches GeoForschungsZentrum GFZ, Telegrafenberg Potsdam, Germany c Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Casilla 567, Valdivia, Chile d Scripps Institution of Oceanography – Earth Division, University of California, San Diego, La Jolla, USA a r t i c l e i n f o a b s t r a c t Article history: The African Humid Period (AHP) between ∼15 and 5.5 cal. kyr BP caused major environmental change Received 2 June 2016 in East Africa, including filling of the Suguta Valley in the northern Kenya Rift with an extensive Received in revised form 4 November 2016 (∼2150 km2), deep (∼300 m) lake. Interfingering fluvio-lacustrine deposits of the Baragoi paleo-delta Accepted 8 November 2016 provide insights into the lake-level history and how erosion rates changed during this time, as revealed Available online 30 November 2016 by delta-volume estimates and the concentration of cosmogenic 10Be in fluvial sand. Erosion rates derived Editor: A. Yin −1 10 from delta-volume estimates range from 0.019 to 0.03 mm yr . Be-derived paleo-erosion rates at −1 Keywords: ∼11.8 cal. -
1843 KMS Kenya Past and Present Issue 43
Kenya Past and Present Issue 43 Kenya Past and Present Editor Peta Meyer Editorial Board Marla Stone Patricia Jentz Kathy Vaughan Kenya Past and Present is a publication of the Kenya Museum Society, a not-for-profit organisation founded in 1971 to support and raise funds for the National Museums of Kenya. Correspondence should be addressed to: Kenya Museum Society, PO Box 40658, Nairobi 00100, Kenya. Email: [email protected] Website: www.KenyaMuseumSociety.org Statements of fact and opinion appearing in Kenya Past and Present are made on the responsibility of the author alone and do not imply the endorsement of the editor or publishers. Reproduction of the contents is permitted with acknowledgement given to its source. We encourage the contribution of articles, which may be sent to the editor at [email protected]. No category exists for subscription to Kenya Past and Present; it is a benefit of membership in the Kenya Museum Society. Available back issues are for sale at the Society’s offices in the Nairobi National Museum. Any organisation wishing to exchange journals should write to the Resource Centre Manager, National Museums of Kenya, PO Box 40658, Nairobi 00100, Kenya, or send an email to [email protected] Designed by Tara Consultants Ltd ©Kenya Museum Society Nairobi, April 2016 Kenya Past and Present Issue 43, 2016 Contents KMS highlights 2015 ..................................................................................... 3 Patricia Jentz To conserve Kenya’s natural and cultural heritage ........................................ 9 Marla Stone Museum highlights 2015 ............................................................................. 11 Juliana Jebet and Hellen Njagi Beauty and the bead: Ostrich eggshell beads through prehistory .................................................. 17 Angela W. -
2009 Trip Report KENYA
KENYA and TANZANIA TRIP REPORT Sept 25-Oct 23, 2009 PART 1 - Classic Kenya text and photos by Adrian Binns Sept 25 / Day 1: Blue Post Thika; Castle Forest We began the morning with an unexpected Little Sparrowhawk followed by a Great Sparrowhawk, both in the skies across the main road from the Blue Post Hotel in Thika. The lush grounds of the Blue Post are bordered by the twin waterfalls of the Chania and Thika, both rivers originating from the nearby Aberdare Mountain Range. It is a good place to get aquatinted with some of the more common birds, especially as most can be seen in close proximity and very well. Eastern Black-headed Oriole, Cinnamon-chested Bee- eater, Little Bee-eater, White-eyed Slaty Flycatcher, Collared Sunbird, Bronzed Mannikin, Speckled Mousebird and Yellow-rumped Tinkerbird were easily found. Looking down along the river course and around the thundering waterfall we found a pair of Giant Kingfishers as well as Great Cormorant, Grey Heron and Common Sandpiper, and two Nile Monitors slipped behind large boulders. A fruiting tree provided a feast for Yellow-rumped Seedeaters, Violet-backed Starlings, Spot-flanked Barbet (right), White-headed Barbet as a Grey-headed Kingfisher, an open woodland bird, made sorties from a nearby perch. www.wildsidenaturetours.com www.eastafricanwildlifesafaris.com © Adrian Binns Page 1 It was a gorgeous afternoon at the Castle Forest Lodge set deep in forested foothills of the southern slope of Mt. Kenya. While having lunch on the verandah, overlooking a fabulous valley below, we had circling Long-crested Eagle (above right), a distant Mountain Buzzard and African Harrier Hawk. -
George Muia the “Turkana Grits”: Potential Hydrocarbon Reservoirs
THÈSE / UNIVERSITÉ DE RENNES 1 sous le sceau de l’Université Européenne de Bretagne pour le grade de DOCTEUR DE L’UNIVERSITÉ DE RENNES 1 Mention : Sciences de la Terre Ecole Doctorale Sciences de la Matière présentée par George Muia Préparée à l’unité de recherche UMR 6118 Géosciences Rennes Observatoire des Sciences de l’Univers de Rennes Thèse soutenue à Rennes The “Turkana Grits”: le 24/07/2015 Potential Hydrocarbon devant le jury composé de : Jean-Luc POTDEVIN Reservoirs Professeur, Université de Lille 1 / rapporteur of the Northern Stéphane DUCROCQ Directeur de Recherche, and Central Kenya Rifts CNRS-Université de Poitiers / rapporteur Jean-Yves REYNAUD Professeur, Université de Lille 1 / examinateur Mathieu SCHUSTER Chargé de Recherche, CNRS Université de Strasbourg / examinateur Peter R. COBBOLD Directeur de Recherche Emérite, CNRS Université de Rennes 1/ examinateur Jean-Jacques TIERCELIN Directeur de Recherche, CNRS-Université de Rennes 1 / directeur de thèse Erwan HALLOT Maître de Conférences Université de Rennes 1 / co-directeur de thèse The “Turkana Grits”: Potential Hydrocarbon Reservoirs of the Northern and Central Kenya Rifts 3 Table of contents Acknowledgements 6 Abstract 8 General Introduction 9 Chapter I 21 1. Introduction 30 2. Field study, sampling and analytical methods 35 3. Regional background of the Central and Northern Kenya Rifts 37 3.1. Physiography and climate of the Central and Northern Kenya Rifts 37 3.2. Geological outline of the Kerio and Baringo Basins 40 3.3. Geological outline of the North Kerio Basin 43 4. The Kimwarer Formation 45 4.1. Lithostratigraphy 45 4.1.1. The “Lower Kimwarer Formation” 47 4.1.2. -
An Electrical Resistivity Study of the Area Between Mt. Suswa and The
AN ELECTRICAL RESISTIVITY STUDY OF THE AREA BETWEEN MT. SUSWA AND * M THE OLKARIA GEOTHERMAL FIELD, KENYA STEPHEN ALUMASA ONACONACHA IIS TUF.sis n\sS rREEN e e n ACCEPTED m ^ e i t e d ^ fFOE HE DECREE of nd A COt'V M&vA7 BE PLACED IN 'TH& njivk.RSITY LIBRARY. A thesis submitted in accordance with the requirement for partial fulfillment of the V Degree of Master of Science DEPT. OF GEOLOGY UNIVERSITY OF NAIROBI 1989 DECLARATION jhis is my original work and has not b e e n submitted for a degree in any other university S . A . ONACHA The thesis has been submitted for examination with our Knowledge as University Supervisors: /] Mr. E. DINDI ACKNOWLEDGEMENTS I wish to thank my supervisors Dr. M.P. Tole and Mr. E. Dindi for their invaluable help and advice during the course of ray studies. I am grateful to the staff of the Ministry of Energy especially Mr. Kinyariro and Mr. Kilele for their tremendous help during the data acquisition. I also wish to express my appreciation of the University of Nairobi for their MSc Scholarship during my study. I am grateful to the British Council for their fellowship that enabled me to carry out data analysis at the University of Edinburgh. A ^ Finally, I wish to thank the members of my family for their love and understanding during my studies. ABSTRACT The D. C. electrical resistivity study of Suswa-Olkaria region was carried out from July 1987 to November, 1988. The main objective was to evaluate the sub-surface geoelectric structure with a view to determining layers that might be associated with geothermal fluid migrations. -
Lake Turkana and the Lower Omo the Arid and Semi-Arid Lands Account for 50% of Kenya’S Livestock Production (Snyder, 2006)
Lake Turkana & the Lower Omo: Hydrological Impacts of Major Dam & Irrigation Development REPORT African Studies Centre Sean Avery (BSc., PhD., C.Eng., C. Env.) © Antonella865 | Dreamstime © Antonella865 Consultant’s email: [email protected] Web: www.watres.com LAKE TURKANA & THE LOWER OMO: HYDROLOGICAL IMPACTS OF MAJOR DAM & IRRIGATION DEVELOPMENTS CONTENTS – VOLUME I REPORT Chapter Description Page EXECUTIVE(SUMMARY ..................................................................................................................................1! 1! INTRODUCTION .................................................................................................................................... 12! 1.1! THE(CONTEXT ........................................................................................................................................ 12! 1.2! THE(ASSIGNMENT .................................................................................................................................. 14! 1.3! METHODOLOGY...................................................................................................................................... 15! 2! DEVELOPMENT(PLANNING(IN(THE(OMO(BASIN ......................................................................... 18! 2.1! INTRODUCTION(AND(SUMMARY(OVERVIEW(OF(FINDINGS................................................................... 18! 2.2! OMO?GIBE(BASIN(MASTER(PLAN(STUDY,(DECEMBER(1996..............................................................19! 2.2.1! OMO'GIBE!BASIN!MASTER!PLAN!'!TERMS!OF!REFERENCE...........................................................................19! -
Lake Turkana Archaeology: the Holocene
Lake Turkana Archaeology: The Holocene Lawrence H. Robbins, Michigan State University Abstract. Pioneering research in the Holocene archaeology of Lake Turkana con- tributed significantly to the development of broader issues in the prehistory of Africa, including the aquatic civilization model and the initial spread of domes- ticated livestock in East Africa. These topics are reviewed following retrospective discussion of the nature of pioneering fieldwork carried out in the area in the1960s. The early research at Lake Turkana uncovered the oldest pottery in East Africa as well as large numbers of bone harpoons similar to those found along the Nile Valley and elsewhere in Africa. The Lake Turkana area remains one of the major building blocks in the interpretation of the later prehistory of Africa as a whole, just as it is a key area for understanding the early phases of human evolution. Our way had at first led us up hills of volcanic origin. I can’t imagine landscape more barren, dried out and grim. At 1.22 pm the Bassonarok appeared, an enormous lake of blue water dotted with some islands. The northern shores cannot be seen. At its southern end it must be about 20 kilometers wide. As far as the eye can see are barren and volcanic shores. I give it the name of Lake Rudolf. (Teleki 1965 [1886–95]: 5 March 1888) From yesterday’s campsite we could overlook nearly the whole western and north- ern shores of the lake. The soil here is different again. I observed a lot of conglom- erates and fossils (petrification). -
The Status of Kenya's Elephants
The status of Kenya’s elephants 1990–2002 C. Thouless, J. King, P. Omondi, P. Kahumbu, I. Douglas-Hamilton The status of Kenya’s elephants 1990–2002 © 2008 Save the Elephants Save the Elephants PO Box 54667 – 00200 Nairobi, Kenya first published 2008 edited by Helen van Houten and Dali Mwagore maps by Clair Geddes Mathews and Philip Miyare layout by Support to Development Communication CONTENTS Acknowledgements iv Abbreviations iv Executive summary v Map of Kenya viii 1. Introduction 1 2. Survey techniques 4 3. Data collection for this report 7 4. Tsavo 10 5. Amboseli 17 6. Mara 22 7. Laikipia–Samburu 28 8. Meru 36 9. Mwea 41 10. Mt Kenya (including Imenti Forest) 42 11. Aberdares 47 12. Mau 51 13. Mt Elgon 52 14. Marsabit 54 15. Nasolot–South Turkana–Rimoi–Kamnarok 58 16. Shimba Hills 62 17. Kilifi District (including Arabuko-Sokoke) 67 18. Northern (Wajir, Moyale, Mandera) 70 19. Eastern (Lamu, Garissa, Tana River) 72 20. North-western (around Lokichokio) 74 Bibliography 75 Annexes 83 The status of Kenya’s elephants 1990–2002 AcKnowledgemenTs This report is the product of collaboration between Save the Elephants and Kenya Wildlife Service. We are grateful to the directors of KWS in 2002, Nehemiah Rotich and Joseph Kioko, and the deputy director of security at that time, Abdul Bashir, for their support. Many people have contributed to this report and we are extremely grateful to them for their input. In particular we would like to thank KWS field personnel, too numerous to mention by name, who facilitated our access to field records and provided vital information and insight into the status of elephants in their respective areas. -
"Afrika-Studien" Edited by Ifo-Institut Für Wirtschafts- Forschung E
© Publication series "Afrika-Studien" edited by Ifo-Institut für Wirtschafts- forschung e. V., München, in connexion with Prof. Dr. PETER VON BLANCKENBURG, Berlin Prof. Dr. HEINRICH KRAUT, Dortmund Prof. Dr. OTTO NEULOH, Saarbriicken Prof. Dr. Dr. h. c. RUDOLP STUCKEN, Erlangen Prof. Dr. HANS WILBRANDT, Gottingen Prof. Dr. EMIL WOERMANN, Gottingen Editors in Cbief: Dr. phil. WILHELM MARQUARDT, München, Afrilca-Studienstelle im Ifo-Institut Prof. Dr. HANS RUTHENDERG, Stuttgart-Hohenheim, Institut für Auslandische Landwirtscliafl AFRIKA-STUDIENSTELLE MWEA An Irrigated Rice Settlement in Kenya Edited by ROBERT CHAMBERS and JON MORIS WELTFORUM VERLAG • MÜNCHEN M. The Perkerra Irrigation Scheme: A Contrasting Case by ROBERT CHAMBERS I. Historical Narrative 345 II. The Problems Experienced 352 1. Construction and Irrigation Problems 352 2. Production and Marketing Problems 353 3. Problems of Tenants and Staff 355 4. Problems of Organisation and Control 358 III. Some Concluding Lessons 361 List of Tables 1. Development Targets and Adiievements 349 2. Finance and Settlement 350 3. Onion Acreages and Yields 354 4. The Perkerra Local Committee 360 It is difficult to appreciate adequately a single development project con- sidered in isolation from its environment and from the record of similar projects elsewhere. To give a sharper focus to our review in this book of the achievements of the Mwea Irrigation Settlement, this chapter describes the very different history of effort and expenditure on a sister scheme whidi was started at the same time and for much the same reasons as Mwea. The Per- kerra Irrigation Scheme is located in the Rift Valley north of Nakuru (see Chapter A, Fig.