Geological Evolution of the Red Sea: Historical Background, Review and Synthesis
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Apatite Thermochronology in Modern Geology
Downloaded from http://sp.lyellcollection.org/ by guest on September 24, 2021 Apatite thermochronology in modern geology F. LISKER1*, B. VENTURA1 & U. A. GLASMACHER2 1Fachbereich Geowissenschaften, Universita¨t Bremen, PF 330440, 28334 Bremen, Germany 2Institut fu¨r Geowissenschaften, Ruprecht-Karls-Universita¨t Heidelberg, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany *Corresponding author (e-mail: fl[email protected]) Abstract: Fission-track and (U–Th–Sm)/He thermochronology on apatites are radiometric dating methods that refer to thermal histories of rocks within the temperature range of 408–125 8C. Their introduction into geological research contributed to the development of new concepts to interpreting time-temperature constraints and substantially improved the understanding of cooling processes within the uppermost crust. Present geological applications of apatite thermochronological methods include absolute dating of rocks and tectonic processes, investigation of denudation histories and long-term landscape evolution of various geological settings, and basin analysis. Thermochronology may be described as the the analysis of radiation damage trails (‘fission quantitative study of the thermal histories of rocks tracks’) in uranium-bearing, non-conductive using temperature-sensitive radiometric dating minerals and glasses. It is routinely applied on the methods such as 40Ar/39Ar and K–Ar, fission minerals apatite, zircon and titanite. Fission tracks track, and (U–Th)/He (Berger & York 1981). are produced continuously through geological time Amongst these different methods, apatite fission as a result of the spontaneous fission of 238U track (AFT) and apatite (U–Th–Sm)/He (AHe) atoms. They are submicroscopic features with an are now, perhaps, the most widely used thermo- initial width of approximately 10 nm and a length chronometers as they are the most sensitive to low of up to 20 mm (Paul & Fitzgerald 1992) that can temperatures (typically between 40 and c. -
The Western Branch of the East African Rift: a Review of Tectonics, Volcanology and Geothermal Activity
Presented at SDG Short Course IV on Exploration and Development of Geothermal Resources, organized by UNU-GTP and KenGen, at Lake Bogoria and Lake Naivasha, Kenya, Nov. 13 – Dec. 3, 2019. THE WESTERN BRANCH OF THE EAST AFRICAN RIFT: A REVIEW OF TECTONICS, VOLCANOLOGY AND GEOTHERMAL ACTIVITY Björn S. Hardarson Iceland GeoSurvey (ÍSOR) Grensásvegur 9, 108 Reykjavik ICELAND [email protected] ABSTRACT The East African Rift System (EARS) is a classic example of continental rifting and provides an excellent framework to study extensional magmatism and the evolution of several central volcanic systems that have formed along the rift from the Tertiary to Recent. Many of the volcanic structures have developed substantial high-temperature geothermal systems where the heat source is magmatic and related to central volcanoes. Detailed studies indicate that the geothermal potential in Eastern Africa is in the excess of 15,000 MWe. However, despite the high geothermal potential of EARS only Kenya has installed significant capacity of about 570 MW. Magmatism along the EARS is generally believed to be associated with mantle plume activities but the number and nature of mantle plumes is still, however, controversial. EARS is divided into two main branches, the Eastern- and Western rifts, and it is well documented that significantly greater volcanism is observed in the older Eastern rift (i.e. Ethiopia and Kenya) compared to that in the younger Western rift, where eruptive activity is, in general, restricted to four spatially distinct provinces along the rift axis. These are the Toro-Ankole in western Uganda, the Virunga and Kivu provinces along the border of the DRC with Uganda, Rwanda and Burundi, and the Rungwe volcanic field in SW Tanzania. -
The Somali Maritime Space
LEA D A U THORS: C urtis Bell Ben L a wellin CONTRIB UTI NG AU THORS: A l e x andr a A mling J a y Benso n S asha Ego r o v a Joh n Filitz Maisie P igeon P aige Roberts OEF Research, Oceans Beyond Piracy, and Secure Fisheries are programs of One Earth Future http://dx.doi.org/10.18289/OEF.2017.015 ACKNOWLEDGMENTS With thanks to John R. Hoopes IV for data analysis and plotting, and to many others who offered valuable feedback on the content, including John Steed, Victor Odundo Owuor, Gregory Clough, Jérôme Michelet, Alasdair Walton, and many others who wish to remain unnamed. Graphic design and layout is by Andrea Kuenker and Timothy Schommer of One Earth Future. © 2017 One Earth Future Stable Seas: Somali Waters | i TABLE OF CONTENTS STABLE SEAS: SOMALI WATERS .......................................................................................................1 THE SOMALI MARITIME SPACE ........................................................................................................2 COASTAL GOVERNANCE.....................................................................................................................5 SOMALI EFFORTS TO PROVIDE MARITIME GOVERNANCE ..............................................8 INTERNATIONAL EFFORTS TO PROVIDE MARITIME GOVERNANCE ..........................11 MARITIME PIRACY AND TERRORISM ...........................................................................................13 ILLEGAL, UNREPORTED, AND UNREGULATED FISHING ....................................................17 ARMS TRAFFICKING -
Community Structure and Biogeography of Shore Fishes in the Gulf of Aqaba, Red Sea
Helgol Mar Res (2002) 55:252–284 DOI 10.1007/s10152-001-0090-y ORIGINAL ARTICLE Maroof A. Khalaf · Marc Kochzius Community structure and biogeography of shore fishes in the Gulf of Aqaba, Red Sea Received: 2 April 2001 / Received in revised form: 2 November 2001 / Accepted: 2 November 2001 / Published online: 24 January 2002 © Springer-Verlag and AWI 2002 Abstract Shore fish community structure off the Jorda- Introduction nian Red Sea coast was determined on fringing coral reefs and in a seagrass-dominated bay at 6 m and 12 m Coral reefs are one of the most complex marine ecosys- depths. A total of 198 fish species belonging to 121 gen- tems in which fish communities reach their highest de- era and 43 families was recorded. Labridae and Poma- gree of diversity (Harmelin-Vivien 1989). Morphological centridae dominated the ichthyofauna in terms of species properties and the geographical region of the coral reef richness and Pomacentridae were most abundant. Nei- determine the structure of the fish assemblages (Sale ther diversity nor species richness was correlated to 1980; Thresher 1991; Williams 1991). The ichthyofauna depth. The abundance of fishes was higher at the deep of coral reefs can be linked to varying degrees with adja- reef slope, due to schooling planktivorous fishes. At cent habitats (Parrish 1989) such as seagrass meadows 12 m depth abundance of fishes at the seagrass-dominat- (Ogden 1980; Quinn and Ogden 1984; Roblee and ed site was higher than on the coral reefs. Multivariate Ziemann 1984; Kochzius 1999), algal beds (Rossier and analysis demonstrated a strong influence on the fish as- Kulbicki 2000) and mangroves (Birkeland 1985; Thollot semblages by depth and benthic habitat. -
Boundary & Territory Briefing
International Boundaries Research Unit BOUNDARY & TERRITORY BRIEFING Volume 1 Number 8 The Evolution of the Egypt-Israel Boundary: From Colonial Foundations to Peaceful Borders Nurit Kliot Boundary and Territory Briefing Volume 1 Number 8 ISBN 1-897643-17-9 1995 The Evolution of the Egypt-Israel Boundary: From Colonial Foundations to Peaceful Borders by Nurit Kliot Edited by Clive Schofield International Boundaries Research Unit Department of Geography University of Durham South Road Durham DH1 3LE UK Tel: UK + 44 (0) 191 334 1961 Fax: UK +44 (0) 191 334 1962 E-mail: [email protected] www: http://www-ibru.dur.ac.uk The Author N. Kliot is a Professor and Chairperson of the Department of Geography, University of Haifa, and Head of the Centre for Natural Resources Studies at the University of Haifa. Her specialistion is political geography, and she is a member of the International Geographical Union (IGU) Commission on Political Geography. She writes extensively on the Middle East and among her recent publications are: Water Resources and Conflict in the Middle East (Routledge, 1994) and The Political Geography of Conflict and Peace (Belhaven, 1991) which she edited with S. Waterman. The opinions contained herein are those of the author and are not to be construed as those of IBRU Contents Page 1. Introduction 1 2. The Development of the Egypt-Palestine Border, 1906-1918 1 2.1 Background to delimitation 1 2.2 The Turco-Egyptian boundary agreement of 1906 4 2.3 The delimitation of the Egypt-Palestine boundary 7 2.4 The demarcation of the Egypt-Palestine boundary 7 2.5 Concluding remarks on the development of the Egypt- Palestine border of 1906 8 3. -
West Africa Part III: Central Africa Part IV: East Africa & Southern Africa Name: Date
Part I: North Africa Part II: West Africa Part III: Central Africa Part IV: East Africa & Southern Africa Name: Date: AFRI CA Overview RICA lies at the heart of the earth's land Then, during the nineteenth century, masses. It sits astride the equator, with European traders began setting up trading sta . almost half the continent to the north tions along the coast of West Africa. The of the equator, and half to the south. It con traders, and their governments, soon saw great tains some of the world's greatest deserts, as opportunity for profit in Africa. Eventually, well as some of the world's greatest rivers. It many European countries took control of the has snow-capped mountains, and parched, arid land and divided it into colonies. plains. The first humans came from Africa. By the middle of the twentieth century, peo And in the millennia since those fust humans ple all across Africa had demanded indepen walked the plains of Africa, many different cul dence from colonial rule. By the end of the tures have arisen there. century, government had passed firmly into Physically, Africa is one enormous plateau. It African hands. However, the newly independ has no continental-scale mountain chains, no ent nations must still deal with the legacy of peninsulas, no deep fjords. Most of the conti colonialism. The boundaries the European nent is more than 1000 feet (300m) above sea powers created often cut across ethnic and cul level; over half is above 2500 feet (800 m). tural groups. Many African nations today are Africa's early history reflects the wide stretch still struggling to reconcile the different cul of the continent. -
Field Identification Guide to the Sharks and Rays of the Red Sea and Gulf of Aden
FAO SPECIES IDENTIFICATION GUIDE FOR FISHERY PURPOSES ISSN 1020-6868 FIELD IDENTIFICATION GUIDE TO THE SHARKS AND RAYS OF THE RED SEA AND GULF OF ADEN PERSGA FAO SPECIES IDENTIFICATION GUIDE FOR FISHERY PURPOSES FIELD IDENTIFICATION GUIDE TO THE SHARKS AND RAYS OF THE RED SEA AND GULF OF ADEN by Ramón Bonfil Marine Program Wildlife Conservation Society Bronx, New York, USA and Mohamed Abdallah Strategic Action Program Regional Organization for the Conservation of the Environment of the Red Sea and Gulf of Aden Jeddah, Saudi Arabia FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome, 2004 iii PREPARATION OF THIS DOCUMENT This document was prepared under the coordination of the Species Identification and Data Programme of the Marine Resources Service, Fishery Resources and Environment Division, Fisheries Department, Food and Agriculture Organization of the United Nations (FAO). This field guide is largely based on material prepared for training courses on elasmobranch identification delivered in the region by the first author, and promoted by the Regional Organization for the Conservation of the Environment of the Red Sea and Gulf of Aden (PERSGA), as an activity of PERSGA’s Strategic Action Programme (SAP) towards capacity building and technical assistance in the Red Sea and Gulf of Aden region. Printing was supported by Japanese Government funds. The increasing recognition of the significance of sharks and batoid fishes as ecosystem health indicators, as well as their particular importance in exploited ecosystems in the Red Sea and the Gulf of Aden, have been key considerations to promote the preparation of this Field Guide. Furthermore, in recent years the reported catches of elasmobranchs in the Red Sea and the Gulf of Aden showed a marked increase. -
For Additions to This Section Please See the Media Resources Desk
UNLV LIBRARY (The) Africans. MEDIA RESOURCES CATALOG PBS (1987) ANTHROPOLOGY 1. The Nature of a Continent: examines Summer 2011 Africa as the birthplace of human kind and discusses the impact of geography on A-OK? African history. Bullfrog Films (2000) 2. A Legacy of Lifestyles: explores how Part 26 of a series on how the African contemporary lifestyles are globalized world economy affects ordinary influenced by indigenous, Islamic and people. In underdeveloped countries Western factors. children with Vitamin A deficiency run the 3. New Gods: examines the factors that risk of dying from common childhood influence religion in Africa. illnesses. The cost of ensuring all children 4. Tools of Exploitation: contrasts the receive enough Vitamin A is small, but impact of the West on Africa and the impact improves children's chances of survival by of Africa on the development of the West. 25%. This episode looks at Vitamin A Looks at the manner in which Africa's distribution programs in Ghana, Uganda, human and natural resources have been India and Guatemala. exploited. Video Cassette (24 min.) 5. New Conflicts: explores the tensions RJ399 V57 A2 2000 inherent in the juxtaposition of the three heritages. Africa. 6. In Search of Stability: studies several National Geographic Video (2001) means of governing and new social orders. Presents Africa through the eyes of its 7. A Garden of Eden in Decay? people, including the personal stories of identifies the problems of a continent that those who shape its future. produces what it does not consume and 1. Savanna homecoming ; Desert consumes what it does not produce. -
Pulses in Ethiopia, Their Taxonomy and Agricultural Significance E.Westphal
Pulses in Ethiopia, their taxonomy andagricultura l significance E.Westphal JN08201,579 E.Westpha l Pulses in Ethiopia, their taxonomy and agricultural significance Proefschrift terverkrijgin g van degraa dva n doctori nd elandbouwwetenschappen , opgeza gva n derecto r magnificus, prof.dr .ir .H .A . Leniger, hoogleraar ind etechnologie , inne t openbaar teverdedige n opvrijda g 15 maart 1974 desnamiddag st evie ruu r ind eaul ava nd eLandbouwhogeschoo lt eWageninge n Centrefor AgriculturalPublishing and Documentation Wageningen- 8February 1974 46° 48° TOWNS AND VILLAGES DEBRE BIRHAN 56 MAJI DEBRE SINA 57 BUTAJIRA KARA KORE 58 HOSAINA KOMBOLCHA 59 DE8RE ZEIT (BISHUFTU) BATI 60 MOJO TENDAHO 61 MAKI SERDO 62 ADAMI TULU 8 ASSAB 63 SHASHAMANE 9 WOLDYA 64 SODDO 10 KOBO 66 BULKI 11 ALAMATA 66 BAKO 12 LALIBELA 67 GIDOLE 13 SOKOTA 68 GIARSO 14 MAICHEW 69 YABELO 15 ENDA MEDHANE ALEM 70 BURJI 16 ABIYAOI 71 AGERE MARIAM 17 AXUM 72 FISHA GENET 16 ADUA 73 YIRGA CHAFFE 19 ADIGRAT 74 DILA 20 SENAFE 75 WONDO 21 ADI KAYEH 76 YIRGA ALEM 22 ADI UGRI 77 AGERE SELAM 23 DEKEMHARE 78 KEBRE MENGIST (ADOLA) 24 MASSAWA 79 NEGELLI 25 KEREN 80 MEGA 26 AGOROAT 81 MOYALE 27 BARENIU 82 DOLO 28 TESENEY 83 EL KERE 29 OM HAJER 84 GINIR 30 DEBAREK 85 ADABA 31 METEMA 86 DODOLA 32 GORGORA 87 BEKOJI 33 ADDIS ZEMEN 88 TICHO 34 DEBRE TABOR 89 NAZRET (ADAMA 35 BAHAR DAR 90 METAHARA 36 DANGLA 91 AWASH 37 INJIBARA 92 MIESO 38 GUBA 93 ASBE TEFERI 39 BURE 94 BEDESSA 40 DEMBECHA 95 GELEMSO 41 FICHE 96 HIRNA 42 AGERE HIWET (AMB3) 97 KOBBO 43 BAKO (SHOA) 98 DIRE DAWA 44 GIMBI 99 ALEMAYA -
Africa-Arabia-Eurasia Plate Interactions and Implications for the Dynamics of Mediterranean Subduction and Red Sea Rifting
This page added by the GeoPRISMS office. Africa-Arabia-Eurasia plate interactions and implications for the dynamics of Mediterranean subduction and Red Sea rifting Authors: R. Reilinger, B. Hager, L. Royden, C. Burchfiel, R. Van der Hilst Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA USA, [email protected], Tel: (617)253 -7860 This page added by the GeoPRISMS office. Our proposed GeoPRISMS Initiative is based on the premise that understanding the mechanics of plate motions (i.e., the force balance on the plates) is necessary to develop realistic models for plate interactions, including processes at subduction and extensional (rifting) plate boundaries. Important advances are being made with new geologic and geophysical techniques and observations that are providing fundamental insights into the dynamics of these plate tectonic processes. Our proposed research addresses directly the following questions identified in the GeoPRISMS SCD Draft Science Plan: 4.2 (How does deformation across the subduction plate boundary evolve in space and time, through the seismic cycle and beyond?), 4.6 (What are the physical and chemical conditions that control subduction zone initiation and the development of mature arc systems?), and 4.7 (What are the critical feedbacks between surface processes and subduction zone mechanics and dynamics?). It has long been recognized that the Greater Mediterranean region provides a natural laboratory to study a wide range of geodynamic processes (Figure 1) including ocean subduction and continent- continent collision (Hellenic arc, Arabia-Eurasia collision), lithospheric delamination (E Turkey High Plateau, Alboran Sea/High Atlas), back-arc extension (Mediterranean basins, including Alboran, Central Mediterranean, Aegean), “escape” tectonics and associated continental transform faulting (Anatolia, North and East Anatolian faults), and active continental and ocean rifting (East African and northern Red Sea rifting, central Red Sea and Gulf of Aden young ocean rifting). -
Geog 120: World Geography American University of Phnom Penh
Geog 120: World Geography American University of Phnom Penh Map Quizzes: List of physical features 1. Africa Atlas Drakensberg Seas and Oceans Deserts Mediterranean Atlantic Kalahari Strait of Gibraltar Namib Suez Canal Sahara Mozambique Channel Ogaden Red Sea Libyan Gulf of Suez 2. Asia Lakes Lake Chad Seas and Oceans Lake Malawi (Nyasa) Lake Tanganyika Andaman Sea Lake Victoria Arabian Sea Lake Albert Aral Sea Lake Rudolph Arctic Ocean Atlantic Ocean Rivers Black Sea Caspian Sea Congo East China Sea Limpopo Indian Ocean Niger Inland Sea (also know as Setonaikai, Zambezi Japan) Nile Mediterranean Sea Orange Pacific Ocean Vaal Red Sea Sea of Japan Mountains Sea of Okhotsk 2 South China Sea Mountain Ranges Yellow Sea Caucuses Elburz Straits, Channels, Bays and Gulfs Himalayas Hindu Kush Bay of Bengal Ural Bosporus Zagros Dardanelles Gulf of Aden Gulf of Suez Deserts Gulf of Thailand Arabian Gulf of Tonkin Dasht-E-Kavir Persian Gulf Gobi Strait of Taiwan Negev Strait of Malacca Takla Makan Strait of Hormuz Strait of Sunda Suez Canal 3. The Americas Lakes Seas and Oceans Baykal Bering Tonle Sap Caribbean Sea Atlantic Ocean Pacific Ocean Rivers Straits, Channels, Bays and Gulfs Amur Brahmaputra Gulf of Mexico Chang Jiang Hudson Bay Euphrates Panama Canal Ganges Strait of Magellan Huang He (Yellow) Indus Lakes Irrawaddy Mekong Great Salt Tigris Great Lakes (Lakes Tonle Sap (River and Lake) Superior, Michigan, Huron, 3 Erie, and Ontario) 4. Australia and the Pacific Manitoba Titicaca Winnipeg Seas and Oceans Coral Sea Rivers Tasman Sea Pacific Ocean Amazon Indian Ocean Colorado Columbia Hudson Straits, Channels, Bays and Gulfs Mississippi Bass Strait Missouri Cook Strait Ohio Gulf of Carpentaria Orinoco Torres Strait Paraguay Plata Parana Rivers Rio Grande Darling St. -
GLY5455 Introduction to Geophysics/Geodynamics Syllabus Fall 2015 Instructor: Mark Panning Location: Williamson 218 Time: Tuesday and Thursday, 1:55-3:10Pm
GLY5455 Introduction to Geophysics/Geodynamics Syllabus Fall 2015 Instructor: Mark Panning Location: Williamson 218 Time: Tuesday and Thursday, 1:55-3:10pm Contact Info Office: 229 Williamson Hall Phone: 392-2634 Email: [email protected] Office hours: Can be arranged at any time via email Textbook Turcotte & Schubert, Geodynamics, 3rd Edition (required) We will also be pulling material from the following books (not required) Physics of the Earth, Stacey and Davis (2008) The Magnetic Field of the Earth, Merrill, McElhinny, and McFadden (1996) Introduction to Seismology, Shearer (2006) Pre-reqs You will ideally have completed 1 year of calculus and a semester of physics. This class will deal with vector calculus… if this worries you, check out div grad curl and all that, by H.M. Schey (available for around $30 online). Grading 60% Homework 20% Midterm 20% Final Course topics (roughly 2-3 weeks per topic… but very flexible!) Topic Text Gravity Ch. 5 + other notes Heat Ch. 4 Magnetism Material from The Magnetic Field of the Earth Seismology Ch. 2, 3, and material from Introduction to Seismology Plate Tectonics & Mantle Geodynamics Ch. 1,6,7 Geophysical inverse theory (if time allows) Outside readings TBA Class notes Lecture notes will be distributed, sometimes before the material is covered in lecture, and sometimes after. Regardless, as always, such notes are meant to be supplementary to your own notes. I may cover things not in the distributed notes, and likewise may not cover everything in lecture that is included in the notes. Homework The first homework assignment will be assigned in week 2.