Glass Compositions and Temp of Post-17 Ka Eruptions from the Afar
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
An Analysis of the Afar-Somali Conflict in Ethiopia and Djibouti
Regional Dynamics of Inter-ethnic Conflicts in the Horn of Africa: An Analysis of the Afar-Somali Conflict in Ethiopia and Djibouti DISSERTATION ZUR ERLANGUNG DER GRADES DES DOKTORS DER PHILOSOPHIE DER UNIVERSTÄT HAMBURG VORGELEGT VON YASIN MOHAMMED YASIN from Assab, Ethiopia HAMBURG 2010 ii Regional Dynamics of Inter-ethnic Conflicts in the Horn of Africa: An Analysis of the Afar-Somali Conflict in Ethiopia and Djibouti by Yasin Mohammed Yasin Submitted in partial fulfilment of the requirements for the degree PHILOSOPHIAE DOCTOR (POLITICAL SCIENCE) in the FACULITY OF BUSINESS, ECONOMICS AND SOCIAL SCIENCES at the UNIVERSITY OF HAMBURG Supervisors Prof. Dr. Cord Jakobeit Prof. Dr. Rainer Tetzlaff HAMBURG 15 December 2010 iii Acknowledgments First and foremost, I would like to thank my doctoral fathers Prof. Dr. Cord Jakobeit and Prof. Dr. Rainer Tetzlaff for their critical comments and kindly encouragement that made it possible for me to complete this PhD project. Particularly, Prof. Jakobeit’s invaluable assistance whenever I needed and his academic follow-up enabled me to carry out the work successfully. I therefore ask Prof. Dr. Cord Jakobeit to accept my sincere thanks. I am also grateful to Prof. Dr. Klaus Mummenhoff and the association, Verein zur Förderung äthiopischer Schüler und Studenten e. V., Osnabruck , for the enthusiastic morale and financial support offered to me in my stay in Hamburg as well as during routine travels between Addis and Hamburg. I also owe much to Dr. Wolbert Smidt for his friendly and academic guidance throughout the research and writing of this dissertation. Special thanks are reserved to the Department of Social Sciences at the University of Hamburg and the German Institute for Global and Area Studies (GIGA) that provided me comfortable environment during my research work in Hamburg. -
A Multidisciplinary Study of the Final Episode of the Manda Hararo Dyke
Downloaded from http://sp.lyellcollection.org/ by guest on September 23, 2015 A multidisciplinary study of the final episode of the Manda Hararo dyke sequence, Ethiopia, and implications for trends in volcanism during the rifting cycle T. D. BARNIE1,9*, D. KEIR2, I. HAMLING3, B. HOFMANN4, M. BELACHEW5, S. CARN6, D. EASTWELL2, J. O. S. HAMMOND7, A. AYELE8, C. OPPENHEIMER1 & T. WRIGHT4 1Department of Geography, University of Cambridge, Downing Place, Cambridge CB2 3EN, UK 2National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK 3GNS Science, 1 Fairway Drive, Avalon 5010, P.O. Box 30–368, Lower Hutt 5040, New Zealand 4School of Earth and Environment, Maths/Earth and Environment Building, The University of Leeds, Leeds LS2 9JT, UK 5Boone Pickens School of Geology, Noble Research Center, Oklahoma State University, Stillwater, OK 74078, USA 6Department of Geological and Mining Engineering and Sciences, Michigan Tech, 630 Dow Environmental Sciences, 1400 Townsend Drive, Houghton, MI 49931, USA 7Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK 8Institute of Geophysics, Space Science and Astronomy, Addis Ababa University, Arat Kilo Campus, Addis Ababa, PO Box 1176, Ethiopia 9Present address: Laboratoire Magmas et Volcans, 5 rue Kessler, 63038 Clermont Ferrand Cedex, France *Corresponding author (e-mail: [email protected]) Abstract: The sequence of dyke intrusions between 2005 and 2010 in the Manda Hararo rift segment, Ethiopia, provided an opportunity to test conceptual models of continental rifting. Based on trends up to dyke 13 in the sequence, it was anticipated that, should magma supply con- tinue, dykes would shorten in length and eruptions would increase in size and decrease in distance from the segment centre as extensional stress was progressively released. -
Hawaiian Volcanoes: from Source to Surface Site Waikolao, Hawaii 20 - 24 August 2012
AGU Chapman Conference on Hawaiian Volcanoes: From Source to Surface Site Waikolao, Hawaii 20 - 24 August 2012 Conveners Michael Poland, USGS – Hawaiian Volcano Observatory, USA Paul Okubo, USGS – Hawaiian Volcano Observatory, USA Ken Hon, University of Hawai'i at Hilo, USA Program Committee Rebecca Carey, University of California, Berkeley, USA Simon Carn, Michigan Technological University, USA Valerie Cayol, Obs. de Physique du Globe de Clermont-Ferrand Helge Gonnermann, Rice University, USA Scott Rowland, SOEST, University of Hawai'i at M noa, USA Financial Support 2 AGU Chapman Conference on Hawaiian Volcanoes: From Source to Surface Site Meeting At A Glance Sunday, 19 August 2012 1600h – 1700h Welcome Reception 1700h – 1800h Introduction and Highlights of Kilauea’s Recent Eruption Activity Monday, 20 August 2012 0830h – 0900h Welcome and Logistics 0900h – 0945h Introduction – Hawaiian Volcano Observatory: Its First 100 Years of Advancing Volcanism 0945h – 1215h Magma Origin and Ascent I 1030h – 1045h Coffee Break 1215h – 1330h Lunch on Your Own 1330h – 1430h Magma Origin and Ascent II 1430h – 1445h Coffee Break 1445h – 1600h Magma Origin and Ascent Breakout Sessions I, II, III, IV, and V 1600h – 1645h Magma Origin and Ascent III 1645h – 1900h Poster Session Tuesday, 21 August 2012 0900h – 1215h Magma Storage and Island Evolution I 1215h – 1330h Lunch on Your Own 1330h – 1445h Magma Storage and Island Evolution II 1445h – 1600h Magma Storage and Island Evolution Breakout Sessions I, II, III, IV, and V 1600h – 1645h Magma Storage -
The Foreign Military Presence in the Horn of Africa Region
SIPRI Background Paper April 2019 THE FOREIGN MILITARY SUMMARY w The Horn of Africa is PRESENCE IN THE HORN OF undergoing far-reaching changes in its external security AFRICA REGION environment. A wide variety of international security actors— from Europe, the United States, neil melvin the Middle East, the Gulf, and Asia—are currently operating I. Introduction in the region. As a result, the Horn of Africa has experienced The Horn of Africa region has experienced a substantial increase in the a proliferation of foreign number and size of foreign military deployments since 2001, especially in the military bases and a build-up of 1 past decade (see annexes 1 and 2 for an overview). A wide range of regional naval forces. The external and international security actors are currently operating in the Horn and the militarization of the Horn poses foreign military installations include land-based facilities (e.g. bases, ports, major questions for the future airstrips, training camps, semi-permanent facilities and logistics hubs) and security and stability of the naval forces on permanent or regular deployment.2 The most visible aspect region. of this presence is the proliferation of military facilities in littoral areas along This SIPRI Background the Red Sea and the Horn of Africa.3 However, there has also been a build-up Paper is the first of three papers of naval forces, notably around the Bab el-Mandeb Strait, at the entrance to devoted to the new external the Red Sea and in the Gulf of Aden. security politics of the Horn of This SIPRI Background Paper maps the foreign military presence in the Africa. -
Nationalism, Mass Militarization, and the Education of Eritrea
The Struggling State The Struggling State Nationalism, Mass Militarization, and the Education of Eritrea Jennifer Riggan TEMPLE UNIVERSITY PRESS Philadelphia • Rome • Tokyo TEMPLE UNIVERSITY PRESS Philadelphia, Pennsylvania 19122 www.temple.edu/tempress Copyright © 2016 by Temple University—Of The Commonwealth System of Higher Education All rights reserved Published 2016 Library of Congress Cataloging-in-Publication Data Riggan, Jennifer, 1971– author. The struggling state : nationalism, mass militarization, and the education of Eritrea / Jennifer Riggan. pages cm Includes bibliographical references and index. ISBN 978-1-4399-1270-6 (cloth : alk. paper) — ISBN 978-1-4399-1272-0 (e-book) 1. Civil-military relations—Eritrea. 2. Militarization—Eritrea. 3. Militarism—Eritrea. 4. Teachers—Eritrea. 5. Education and state— Eritrea. 6. Nationalism—Eritrea. 7. Eritrea—Politics and government —1993– I. Title. JQ3583.A38R54 2016 320.9635—dc23 2015013666 The paper used in this publication meets the requirements of the American National Standard for Information Sciences—Permanence of Paper for Printed Library Materials, ANSI Z39.48-1992 Printed in the United States of America 9 8 7 6 5 4 3 2 1 For Ermias Contents Acknowledgments ix Introduction: Everyday Authoritarianism, Teachers, and the Decoupling of Nation and State 1 1 Struggling for the Nation: Contradictions of Revolutionary Nationalism 33 2 “It Seemed like a Punishment”: Coercive State Effects and the Maddening State 57 3 Students or Soldiers? Troubled State Technologies and the Imagined Future of Educated Eritrea 89 4 Educating Eritrea: Disorder, Disruption, and Remaking the Nation 122 5 The Teacher State: Morality and Everyday Sovereignty over Schools 155 Conclusion: Escape, Encampment, and the Alchemy of Nationalism 193 Notes 211 References 221 Index 231 Acknowledgments have tried to write this book with honesty, integrity, and compassion. -
Physical Map Unit
AfricaAnnabelle ate apples in the purple poppies. © 2015Physical Thomas Teaching Tools Map Annabelle ate apples in the purple poppies. © 2015 Thomas TeachingUnit Tools Thanks for Your Purchase! I hope you and your students enjoy this product. If you have any questions, you may contact me at [email protected]. © 2015 Thomas Teaching Tools © 2015 Thomas Teaching Tools Terms of Use This teaching resource includes one single-teacher classroom license. Photocopying this copyrighted product is permissible only for one teacher for single classroom use and for teaching purposes only. Duplication of this resource, in whole or in part, for other individuals, teachers, schools, institutions, or for commercial use is strictly forbidden without written permission from the author. This product may not be distributed, posted, stored, displayed, or shared electronically, digitally, or otherwise, without written permission of the author, MandyAnnabelle Thomas. ate Copying apples any in thepart purple of this poppies. product and placing it on the internet in any form (even a personal/classroom website) is strictly forbidden© 2015 Thomas and is a Teaching violation Toolsof the Digital Millennium Copyright Act (DMCA). You may purchase additional licenses at a reduced price on the “My Purchases”Annabelle page of TpTate ifapples you wish in the to purpleshare withpoppies. your fellow teachers, department, or school. If you have any questions, you may contact me© 2015 at [email protected] Thomas Teaching Tools . Thanks for downloading this product! I hope you and your students enjoy this resource. Feedback is greatly appreciated. Please fee free to contact me if you have any questions. My TpT Store: https://www.teacherspayteachers.com/Store/Tho mas-Teaching-Tools © 2015 Thomas Teaching Tools © 2015 Thomas Teaching Tools Teaching Notes Planning Suggestions This map unit is a great addition to any study of Africa. -
Lipid Biomarker and Carbon Stable Isotope Survey on the Dallol Hydrothermal System in Ethiopia
ASTROBIOLOGY Volume 19, Number 12, 2019 Mary Ann Liebert, Inc. DOI: 10.1089/ast.2018.1963 Lipid Biomarker and Carbon Stable Isotope Survey on the Dallol Hydrothermal System in Ethiopia Daniel Carrizo, Laura Sa´nchez-Garcı´a, Nuria Rodriguez, and Felipe Go´mez Abstract The remote Dallol Hot Springs, an active hydrothermal system in the volcanic region of Danakil (Ethiopia), is an interesting yet poorly studied polyextreme environment for investigating the limits of life. Here, we explored the presence of signs of life in five samples of sinter deposits at Dallol, by means of lipid biomarkers and stable isotope composition. The results reveal the existence of biological material with predominance of (presently or recently active) microbial sources, according to the relative abundance of low-over-high molecular weight moieties (n-alkanes, n-carboxylic acids, or n-alkanols), and the detection of diverse microbial-diagnostic compounds (i.e., monomethyl alkanes; C16:1 o7, C18:1 o9, C18:1 o10, C18:2 o6,9 and iso/anteiso C15 and C17 carboxylic acids; or short-chained dicarboxylic acids). The molecular lipid patterns at Dallol suggest a mi- crobial community largely composed of thermophilic members of the Aquificae, Thermotogae, Chroroflexi, or Proteobacteria phyla, as well as microbial consortia of phototrophs (e.g., Cyanobacteria-Chloroflexi) in lower- temperature and higher-pH niches. Autotrophic sources most likely using the Calvin cycle, together with the acetyl coenzyme A (CoA) pathway, were inferred from the depleted bulk d13C ratios (-25.9/-22.6&), while sulfate-reducing bacteria were considered according to enriched sulfate (7.3/11.7&) and total sulfur (20.5/ 8.2&) d34S ratios. -
Download This Guide As A
Teacher’s Guide The Mangrove Tree: Planting Trees to Feed Families written by Susan L. Roth and Cindy Trumbore illustrated by Susan L. Roth About the Book Genre: Juvenile Nonfiction SYNOPSIS Format: Paperback, $10.95 40 pages, 10-7/8” x 8-7/8” For a long time, the people of Hargigo, a village in the tiny African country ISBN: 9781620145807 of Eritrea, were living without enough food for themselves and their animals. The families were hungry, and their goats and sheep were hungry Reading Level: Grade 4 too. Then along came a scientist, Dr. Gordon Sato, who helped change Interest Level: Grades K–6 their lives for the better. And it all started with some special trees. Guided Reading Level: R Accelerated Reader® Level/Points: These are the trees, 6.4/0.5 Mangrove trees, That were planted by the sea. Lexile™ Measure:NC19190L *Reading level based on the ATOS Readability Formula With alternating verse and prose passages, The Mangrove Tree: Planting Themes: Animal/Biodiversity/Plant Trees to Feed Families invites readers to discover how Dr. Sato’s mangrove Adaptations, Animals, Collaboration, tree-planting project transformed an impoverished village into a self- Environment/Nature, Human Impact sufficient community. This fascinating story is a celebration of creativity, On Environment/Environmental Sustainability, Kindness/Caring, Nature/ hard work—and all those mangrove trees that were planted by the sea! Science, Nonfiction, Responsibility Resources on the web: leeandlow.com/books/the-mangrove- tree All guided reading level placements may vary and are subject to revision. Teachers may adjust the assigned levels in accordance with their own evaluations. -
Quaternary Geochronology 37 (2017) 15E31
Quaternary Geochronology 37 (2017) 15e31 Contents lists available at ScienceDirect Quaternary Geochronology journal homepage: www.elsevier.com/locate/quageo Glass compositions and tempo of post-17 ka eruptions from the Afar Triangle recorded in sediments from lakes Ashenge and Hayk, Ethiopia * C.M. Martin-Jones a, , C.S. Lane b, N.J.G. Pearce a, V.C. Smith c, H.F. Lamb a, C. Oppenheimer b, A. Asrat d, F. Schaebitz e a Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY23 3DB, UK b Research Laboratory for Archaeology and the History of Art, University of Oxford, Oxford, OX1 3QY, UK c Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, UK d School of Earth Sciences, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia e Institute of Geography Education, University of Cologne, 50931, Koln,€ Germany article info abstract Article history: Numerous volcanoes in the Afar Triangle and adjacent Ethiopian Rift Valley have erupted during the Received 18 March 2016 Quaternary, depositing volcanic ash (tephra) horizons that have provided crucial chronology for Received in revised form archaeological sites in eastern Africa. However, late Pleistocene and Holocene tephras have hitherto been 20 September 2016 largely unstudied and the more recent volcanic history of Ethiopia remains poorly constrained. Here, we Accepted 13 October 2016 use sediments from lakes Ashenge and Hayk (Ethiopian Highlands) to construct the first <17 cal ka BP Available online 18 October 2016 tephrostratigraphy for the Afar Triangle. The tephra record reveals 21 visible and crypto-tephra layers, and our new database of major and trace element glass compositions will aid the future identification of Keywords: Tephrochronology these tephra layers from proximal to distal locations. -
Plate Kinematics of the Afro-Arabian Rift System with an Emphasis on the Afar Depression
Scholars' Mine Doctoral Dissertations Student Theses and Dissertations Fall 2012 Plate kinematics of the Afro-Arabian Rift System with an emphasis on the Afar Depression Helen Carrie Bottenberg Follow this and additional works at: https://scholarsmine.mst.edu/doctoral_dissertations Part of the Geology Commons, and the Geophysics and Seismology Commons Department: Geosciences and Geological and Petroleum Engineering Recommended Citation Bottenberg, Helen Carrie, "Plate kinematics of the Afro-Arabian Rift System with an emphasis on the Afar Depression" (2012). Doctoral Dissertations. 2237. https://scholarsmine.mst.edu/doctoral_dissertations/2237 This thesis is brought to you by Scholars' Mine, a service of the Missouri S&T Library and Learning Resources. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. iii iv PLATE KINEMATICS OF THE AFRO-ARABIAN RIFT SYSTEM WITH EMPHASIS ON THE AFAR DEPRESSION, ETHIOPIA by HELEN CARRIE BOTTENBERG A DISSERTATION Presented to the Faculty of the Graduate School of the MISSOURI UNIVERSITY OF SCIENCE & TECHNOLOGY In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in GEOLOGY & GEOPHYSICS 2012 Approved by Mohamed Abdelsalam, Advisor Stephen Gao Leslie Gertsch John Hogan Allison Kennedy Thurmond v 2012 Helen Carrie Bottenberg All Rights Reserved iii PUBLICATION DISSERTATION OPTION This dissertation has been prepared in the style utilized by Geosphere and The Journal of African Earth Sciences. Pages 6-41 and Pages 97-134 will be submitted for separate publications in Geosphere and pages 44-96 will be submitted to Journal of African Earth Sciences iv ABSTRACT This work utilizes the Four-Dimensional Plates (4DPlates) software, and Differential Interferometric Synthetic Aperture Radar (DInSAR) to examine plate-scale, regional- scale and local-scale kinematics of the Afro-Arabian Rift System with emphasis on the Afar Depression in Ethiopia. -
Dissertation
DISSERTATION Titel der Dissertation ˝Geochemical and Petrographic Studies of the Volcano- Tectonic Evolution of Northern Afar: Implications for the Structural Setup of the Actively Expanding Erta’Ale Depression˝ Verfasser Mag. Miruts Hagos angestrebter akademischer Grad Doktor der Naturwissenschaften (Dr. rer. nat.) Wien, im November 2010 Studienkennzahl lt. Studienblatt: A 091 426 Dissertationsgebiet lt. Studienblatt: Erdwissenschaften Betreuer: Prof. Dr. Christian Koeberl PREFACE: This thesis presents the results of three full years of work conducted at the Department of Lithospheric Research, University of Vienna, on the rock samples and structural data collected from the Ethio-Afar volcanic province, Ethiopia. The main objective of this study was to establish the Oligocene–Present volcano-tectonic evolution of the northern Afar Depression and set the appropriate nature of the Afar Depression lithosphere. This work was done at the megascopic scale for the regional geological map and structural setup of the northern Ethiopian plateau and the northern Afar Depression volcanic provinces. The petrogenetic link between the Ethiopian flood and the Danakil Depression basalts was evaluated, using petrographic analyses of the samples together with their major and trace element composition, as well as the Sr and Nd isotopic composition of selected samples. Geochemical and isotopic data were obtained using instrumental neutron activation analysis (INAA), X-ray fluorescence (XRF) spectrometry, electron microprobe (EMP), and thermal ionization mass spectrometry (TIMS) at the Department of Lithospheric Research, University of Vienna. This thesis consists a total of eight chapters with a much summarized general introduction of the East African Rift System (Chapter 1) and review of the regional tectonics and magmatism throughout East Africa (Chapter 2) followed by short description of the methodologies used (Chapter 3). -
Lineament Mapping in North Ghoubbet (Tadjoura, Djibouti)
REPUBLIQUE BUNDESREPUBLIK DE DJIBOUTI DEUTSCHLAND Office Djiboutien de Bundesanstalt für Développement de Geowissenschaften und l’Énergie Géothermique Rohstoffe (BGR) (ODDEG) Hannover Djibouti Regional Project Geothermal Energy East Africa Lineament Mapping in North Ghoubbet (Tadjoura, Djibouti) Alina Ermertz Remote Sensing Working Group BGR Hannover, October 2020 Lineament Mapping in North Ghoubbet (Tadjoura, Djibouti) Author Alina Ermertz (BGR) Project Number 2016.2066.5 BGR Number 05-2392 Project Partner Office Djiboutien de Développement de l’Énergie Géothermique (ODDEG) Pages 31 Place and date of issuance Hannover, October 2020 Lineament Mapping in North Ghoubbet (Tadjoura, Djibouti) Abbreviations List of figures Summary Table of Contents 1 Scope of the Work ...........................................................................................................1 2 Geothermal Exploration in the Republic of Djibouti .......................................................... 2 3 Working Area ..................................................................................................................3 4 Geology & Plate Tectonic Setting .................................................................................... 4 4.1 Geology of the Afar Triangle ..................................................................................... 4 4.2 Geology in North Ghoubbet ...................................................................................... 7 5 Lineament Analysis ......................................................................................................