 | | Journal (article/letter/editorial) | | in the DanakilArea,Ethiopia J. G. HOLWERDAAND R. W. HUTCHINSON Abstract The Danakil evaporitesare young...by rift faultingand separation of Arabia from Ethiopia. Maximumsubsidence alonga rift zoneformedan asymmetric...evaporitesequence in the Danakil area of Tigre and Eritrea provinces,Ethiopia, hasbeenunderexploration...EV•IPORITESIN ETHIOPIA LOCATION N and TOPOGRAPHIC and GEOLOGICAL FEATURES DANAKIL DEPRESSION 125 RED...RED REEFk SEAl LIMESTONE '•,j ETHIOPIA LEGEND *l-'•'• COARSEALLUVIUM RED-BEDS, GYPSUM. BASALT 'F•TI |  | | Journal (article/letter/editorial) | | Isotope Survey on the Dallol Hydrothermal System in Ethiopia Daniel Carrizo, Laura Sánchez-Garcı́a, Nuria...hydrothermal system in the volcanic region of Danakil (Ethiopia), is an interesting yet poorly studied...from that perspective. In the Danakil Depression, in northeast Ethiopia (Fig. 1), the volcanic features...features of the Erta Ale range at the Afar Triangle have created a polyextreme hydrothermal system. Categorized...Categorized as hot desert climate, Danakil is considered one of the driest (annual precipitation between 50 |  | | Book | | Regional Geology Reviews Jacques Varet Geology of Afar (East Africa) Regional Geology Reviews Series...springer.com/series/8643 Jacques Varet Geology of Afar (East Africa) 123 Jacques Varet Géo2d Orléans...11, 6330 Cham, Switzerland Foreword The Afar depression in East Africa is one of the most important...initiated the systematic geological exploration of Afar. I am therefore very pleased to write this preface...the geology of Afar. Since our first mission, we have been fascinated by the geology of Afar and by the discovery—along |  | Boucher, Christine, Lan, Tefang, Marty, Bernard, Burnard, Peter G., Fischer, Tobias P., Ayalew, Dereje, Mabry, Jennifer, Maarten de Moor, J., Zelenski, Michael E., Zimmermann, Laurent (2018) Atmospheric helium isotope composition as a tracer of volcanic emissions: A case study of Erta Ale volcano, Ethiopia. Chemical Geology, 480. 3-11 doi:10.1016/j.chemgeo.2017.05.011 | Journal (article/letter/editorial) | | volcanic emissions: A case study of Erta Ale volcano, Ethiopia Christine Boucher, Tefang Lan, Bernard Marty...volcanic emissions: A case study of Erta Ale volcano, Ethiopia, Chemical Geology (2017), doi: 10.1016/j.chemgeo...volcanic emissions: A case study of Erta Ale volcano, Ethiopia Christine Boucher a*, Tefang Lan a, b, Bernard...Sciences, Addis Ababa University, Addis Ababa, Ethiopia e International Atomic Energy Agency, Vienna...detecting such variations in the Afar region of north- CR eastern Ethiopia, which is located over a well-developed |  | Pagli, Carolina, Wright, Tim J., Ebinger, Cynthia J., Yun, Sang-Ho, Cann, Johnson R., Barnie, Talfan, Ayele, Atalay (2012) Shallow axial magma chamber at the slow-spreading Erta Ale Ridge. Nature Geoscience, 5 (4) 284-288 doi:10.1038/ngeo1414 | Journal (article/letter/editorial) | | and Askja13 , Iceland. At the Dabbahu segment in Afar, both the Gabho and Dabbahu volcanoes are also associated...the Nubian plate from the Danakil microplate in the Afar region of Ethiopia. It forms a continuous ridge...of the Erta Ale volcanic segment. a, Afar depression (Ethiopia). EAVS, Erta Ale volcanic segment; TAVS...Astronomy, Addis Ababa University, Addis Ababa, Ethiopia. *e-mail: C.Pagli@leeds.ac.uk. 284 NATURE GEOSCIENCE...the east and north of Dalafilla (Fig. 1c). OMI sulphur dioxide21 and MODIS thermal22 images show that |  | | Journal (article/letter/editorial) | | Eritrea, produced one of the largest volcanic sulphur inputs to the atmosphere since the 1991 eruption...off-axis alignment, broadly perpendicular to the Afar Rift, and has a history of large-magnitude explosive...pre-eruptive magma storage system and explain the large sulphur emission. We show that the eruption involved two...one of which was more primitive and richer in sulphur than the other, which was higher in water (up to...could potentially account for the large volume of sulphur released. Some of the melt inclusions are volatile |  | | Journal (article/letter/editorial) | | properties of the peat (i.e. calorific values, sulphur etc.). Part 3 includes nine papers on peat (coal)...consider the origin and distribution of pyritic sulphur in the Castleman coal field (Upper Pennsylvanian)...petrology, sulphur isotopes and total sulphur distribution they attribute the source of sulphur to sulphate...mineral. Settings discussed include the Danakil depression of Afar, Lake MacLeod of Australia, and the Permian |  | | Journal (article/letter/editorial) | | Isotopic composition of waters from the Danakil depression (Ethiopia) Greeley, R., D.E. Gault, Crater frequency...OF VOLUME 18 Robinson, B.W., Sulphur isotope equilibrium during sulphur hydrolysis at high temperatures |  | Mogessie, A., Krenn, K., Schaflechner, J., Koch, U., Egger, T., Goritchnig, B., Kosednar, B., Pichler, H., Ofner, L., Bauernfeind, D., Tadesse, S., Demessie, M. (2002) A geological excursion to the Mesozoic sediments of the Abay Basin (Blue Nile), recent volcanics of the Ethiopian main rift and basement rocks of the Adola Rea, Ethiopia. Mitteilungen der Österreichischen Mineralogischen Gesellschaft, 147. | Journal (article/letter/editorial) | | MAIN RIFT AND BASEMENT ROCKS OF THE ADOLA REA, ETHIOPIA by A. Mogessie, K. Krenn, J. Schaflechner, U...Addis Ababa University, Ethiopia 2Ethiopian Institute of Geological Surveys Ethiopia 43 44 1. GENERAL...INTRODUCTION The field excursion to Ethiopia took place from April 5 to 22, 2001. Ethiopia has a varied geology and...making up the Ethiopian plateau; ii) the Main Ethiopia Rift containing a number of lakes and geothermal...details. 45 2. INTRODUCTION TO THE GEOLOGY OF ETHIOPIA The basement upon which all the younger formations |  | | Journal (article/letter/editorial) | | Asia showing the general tectonic elements of the region and the location of the Khorat and the Sakon Nakhon... It covers an area of 170,000 km2 of the Esarn region in northeastern Thailand and central Laos, and...continental-sourced sulphates is by examination of the sulphur isotope values. Halite. Halite beds having chevron...in anhydrite The evolution and variation of the sulphur isotopes in marine evaporites has been documented...isotopic variations in marine evaporites, but the sulphur isotope values of anhydrite samples taken from |  | | Book | | basic understanding of the geology of an area or region will never happen without initial observation of...Congo Djibouti Egypt Equatorial Guinea Eritrea Ethiopia Gabon The Gambia Ghana Guinea Guinea-Bissau Ivory...Republic of Congo, the Republic of Congo, Eritrea, Ethiopia, Guinea, Guinea-Bissau, Ivory Coast, Liberia,...(1872) on East Africa, in which the Great Lakes region of central eastern Africa is very poorly figured...a zone of volcanism extending from the Cape to Ethiopia,roughly parallel to the Indian Ocean. From 1883 |  | Liu, Chenglin, Wang, Licheng, Yan, Maodu, Zhao, Yanjun, Cao, Yangtong, Fang, Xiaomin, Shen, Lijian, Wu, Chihua, Lv, Fenglin, Ding, Ting (2018) The Mesozoic-Cenozoic tectonic settings, paleogeography and evaporitic sedimentation of Tethyan blocks within China: Implications for potash formation. Ore Geology Reviews, 102. 406-425 doi:10.1016/j.oregeorev.2018.09.002 | Journal (article/letter/editorial) | | evaporites and potash deposits (Hsü, 1972; British Sulphur Corporation Limited, 1979, hereafter BSCL; Hite...Japakasetr, 1979). The potash deposits in this region are related to Mesozoic-Cenozoic tectonic 2 events...Middle Triassic to Late Triassic, a subsidence and depression stage in the Middle Jurassic to Late Cretaceous...distributed in the southwestern area called the Yarkand depression, and another branch stretched into the northern...northern margin area called the Kuqa depression. The paleo-Tarim Bay in the Late Cretaceous-Early Paleocene |  | | Journal (issue) | | multi-disciplinary research projects across the region. Once discovered, these resources need to be managed...was established at the UNECA* in Addis Ababa, Ethiopia. Based on its statute, the AMDC will develop into...which is the workshop it organized in Debre Zeit, Ethiopia, in 2014, whose final outcome was the publication...African Development Bank, in 2012 in Addis Ababa, Ethiopia, to discuss the sustainable and integrated development...countries. ANESI was launched in 2013 in Addis Ababa, Ethiopia, during the 24th Colloquium of African Geology |  | | Book | | Ken McClay Chapter 5 4.1 Introduction 63 4.2 Afar 65 4.3 Gulf of Aden 84 4.4 Red Sea 91 4...Indian Ocean with the East African rift system in Ethiopia. However, they felt unable to offer an explanation...Cantabrian-West Pyrenees; DD, Dnepr-Donetz; DK, Danakil; DS, Dead Sea; EA, East Alpine; EB, Ebro; EM, Emirates;...convection within layers has been proposed for the Danakil Depression, Eritrea, and the Boulby potash mine, England...associated stratigraphic onlap in the Mackenzie Delta region of the Beaufort–Mackenzie Basin in northern Canada |  | | Book | | Powell on later expeditions to the Rocky Mountain region, expanded on the floating lands theme in 1889...crust broke up and slowly floated toward the depression. "This would make the Atlantic a great rent and...water could not have carved the 30-mile-wide depression. Declared Gregory, The Rift ValIn ley rivers...Saudi Arabia Red Sm ^iTV y »J Gulf of Aden Ethiopia Indian Ocean *' * ^* 1U? > * f\ /> ...compounds forms a multicolored cascade in the Danakil Depression, a low-lying wasteland at the northern end |  | | Book | | The CRBG was erupted in a tectonically active region. The basalts may be, in part, a product of that...western U.S. The closest analog to the CRBG in this region are the flows eminating from Steens Mountain in...fonn of subducted sediment added to the source region, or by wallrock assimilation during magma storage...Snake River Plain basalts, this enriched mantle region appears to have formed in the late Archean, some...composition and age of the crust throughout this region. The evidence from the Saddle Mountains, that erupted |  | | Book | | Bromine profiles - brine genesis or stability?.92 Sulphur and oxygen isotopes.94 Boron Isotopes 96 Chlorine...regions. Five Islands, Gulf of Mexico. Zagros/Hormuz region, Arabian (Persian) Gulf Salt Dissolution: Solution...Caves. 509 Modern halite karst in the Dead Sea depression.510 Modern halite karst in crests of diapiric...sulphate reducers.643 Bacterial chemosynthesisers (sulphur oxidizers).644 Extremophiles (mostly Archaea).644... 796 Playas of the Qaidam Basin.796 Danakil Depression, Ethiopia.799 Inland chotts and coastal sabkhas |  | | Book | | of coal is environmentally hazardous because of sulphur contamination. The technology to remove pollutants...promising development which is capable of eliminating sulphur dioxide and reducing emission of the oxides of...stripping away oxygen atoms and adding electrons. Sulphur is another light element which has been recently...discontinuity to 8 km/s below it. The REGION OF MELTING REGION OF SOLID MANTLE MATERIAL 200 300 DEPTH...Conrad discontinuity varies considerably from region to region, being estimated to be from one third to two |  | | Report (volume) | | of the Central Steep Zone, Axum area, northern Ethiopia: inferences from magnetic and geochemical data...volcanic rocks in continental flood basalts of Ethiopia: implication for the thermal weakening of the...centres of Northern Africa (e.g. Tibesti, Dafur and Afar) and can they be traced to the lower mantle? Is...tectonic history of the Terminal Pan-African Event in Ethiopia. They provide new metamorphic and magnetic fabric...Ma from Ethiopia, related to the continental flood basalt province associated with the Afar plume. Using |  | | Journal (issue) | | Survey, Tanganyika • • • Potash Developments in Ethiopia • • • • • New Israeli Phosphoric Acid Process...Large breccia ball at C 900 Sketch map of the Accra region . . . page View of road sections from north-western...base, and (3) the seismic activity in the Accra region, which may have accelerated the development of...Fig. 1. 3 MIL.t~ '2 Sketch map of the Accra region showing the location of the newly-cut roads near...by dark clayey loam, which fills a large depression. Towards the south the unconformity cuts across |  | Nisi, B., Vaselli, O., Elio, J., Giannini, L., Tassi, F., Guidi, M., Darrah, T.H., Maletic, E.L., Delgado Huertas, A., Marchionni, S. (2019) The Campo de Calatrava Volcanic Field (central Spain): Fluid geochemistry in a CO2-rich area. Applied Geochemistry, 102. 153-170 doi:10.1016/j.apgeochem.2019.01.011 | Journal (article/letter/editorial) | | reservoir at a relatively shallow depth in this region has caused several small-sized explosions or gas...less intense and occupies the central part of the region. Radiometric ages suggest that the emplacement...(Portero et al., 1984). In the central part of the region (Ciudad Real and Almagro) the Plio-Pleistocene...compressional phase (IGME, 1988). Consequently, the region shows a basin and range-like morphology. The ranges...provinces belonging to the circum-Mediterranean region (Lustrino and Wilson, 2007). The volcanic activity |  | | Journal (issue) | | Sutherland 148 The dating game: Cherry Lewis 150 Afar Triangle tectonics: Tony Waltham 151 Book Reviews... Tony Waltham shared with us his journey to the Afar Triangle in East Africa. In January, Ian Wall mixed...the membership and promoting geology within the region. The East Midlands Field Guide has been a very...allied in chemical and physical properties with sulphur, and occurs as a trace element with a concentration...Limestone Member (basal Lias Group) in the Avon Valley region of southwestern Warwickshire (Old et al, 1991; |  | | Book | | Antimony-tungsten-mercury deposits Mercury Native sulphur WOMAIHDMNAHW 10 Preservation potential III Outer...mineralization in peninsular Thailand 7 Upper Cenozoic sulphur and gold-silver deposits in eastern Japan III Continental...associated mineral deposits characteristic ofsa stable region were often tectonically juxtaposed with and even...associated mineralization to geosynclines in each region received different emphasis. . A Geosynclinal...genesis, but inevitably when applied in detail to any region lead to major difficulties because of imperfections |  | | Book | | libraries of the ships that have explored the bot brine region of the Red Sea. EGON DAVID T. DEGENS A. Ross...and Continuous Seismic Profiles of the Hot Brine Region of the Red Sea, by D. A. Ross, E. E. HA Ys, and...and a layer observed in April 1967 in a small depression to the south of the known brine area not previously...(stations 5247, 5579). station 5579, a small depression was encountered near 21° 17'N 38° 03'E, and a...5580) was lowered into the deepest part of this depression, revealing normal, deep Red. Sea water (about |  | | Book | | buildup with excellent nugration pathways into the region above the buildup. No matter if the underlying...the humidity of air blown in from the surrounding region. In coastal areas beneath humid marine air, such...basin into an evaporite-filled lacustrine(?) depression. The problem of scale always confuses a strictly...Ferry Lake Anhydrite in the Northern Gulf of Mexico region and the evaporites in the Queen and Seven River...deposited atop the Rotliegende sands of the North Sea region (Glennie an d Buller, 1983). BASIN-WIDE EVAPORITES |
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