It shares borders with cote divoire to the west, burkina faso to the north, and togo to the east. Deposit model the namdini gold deposit has many characteristics typical of mesothermal birimian gold deposits in west africa goldfarb et al, 2017 figure 2. Principles of geologic analysis, volume one in a threevolume series covering phanerozoic regional geology and tectonics. The coastline is mostly a low, sandy shore backed by plains and. Ghana geography, climate and population ghana is situated on the west coast of africa with a total area of 238 540 km2. Regional subsidence and marine transgressions 327 tectonism 331 mineralization 332 6. The most updated national soil information can only be obtained from a countrys national soil service. The geology of ghana is primarily very ancient crystalline basement rock, volcanic belts and sedimentary basins, affected by periods of igneous activity and two major orogeny mountain building events.
The birimian in ghana 179 the birimian in other parts of the guinea rise 184 granitoids and structure of the birimian 184 tectonic models for the birimian supergroup 186. The design and formulation of research projects and the methods and. Technical report and mineral resource and reserve update for the nzema gold mine, ghana, west africa page i nzema mine april 2, 20 1 summary the nzema gold mine nzema is located in the western region of ghana, approximately 280km west of the capital, accra, and less than 20km from the coast at essiama. The geology of ghana is primarily very ancient crystalline basement rock, volcanic belts and.
It is my belief, that there has long been a need in universities and geological surveys. The geomorphology of the tarkwaprestea area consists of a series of ridges and valleys parallel to each other and to. Regional geology of africa lecture notes in earth sciences. Its key focus is on both volcanic and nonvolcanic passive margins, and the. Voltaian basin geographical region, ghana britannica. The cretaceous play of tano basin which is located southeastern part of ghana begun its tectonic activities in the last jurassic era where there was a continental rifting between african plate and the south american plate. Download a gis shapefile of the ghana geology and hydrogeology map. Regional and national soil maps and databases fao soils. Exploration history and regional geology robin sutherland. Neoproterozoic, paleozoic and cretaceous sedimentary basins in ghana gerald wemazenu adda1. Regional geology of africa springerverlag berlin heidelberg new york london paris tokyo hong kong barcelona budapest. Western region of ghana with tarkwa as its administrative capital. Reservoir description and characterization of eni field. West africa is remarkable for its geological variety.
Physical environmental challenges and the human responses. The patterns of economic activity with emphasis on ghana. Ghana is bordered by the gulf of guinea, cote divoire ivory coast to the west, burkina faso to the north, and togo to the east. This has been achieved with the opening of five openpit mines golden pride, geita, north mara, tulawaka and buzwagi and one major underground mine bulyanhulu in recent years. Regional geology the bosumtwi structure was formed by a lar ge meteorite impact about 1. This is a simple guide on how to reply a query letter from your boss at your workplace. Development of the production site started right away and in december 2010 oil production was officially launched.
D1 crustal thickening driven by external tectonic forces d2 transtensional event d3 transpressional event tectonic juxtaposition of high grade rocks and greenschist facies lithologies prior to regional shearing d4. Cardinals key assets are located in ghana and include the namdini, bolgatangaand, subranum projects. Wright relates the geology of ghana to the regional geology. The regional geology of ghana is represented by a wide variety. Gold mineralisation is strongly structurally controlled. Regional development in the hydro geology of the chad basin. The aim of this presentation is to outline the geology of ghana in the context of the. The asumura concession is located in the southwestern part of ghana and is divided into two by the southerly flowing bia river figure 1. Afro scandic limited is a registered ghanaian company incorporated to undertake exploration and mining.
An independent qualified persons report on esaase gold. The country has a northsouth extent of about 670 km and a maximum eastwest extent of about 560 km. The crystalline rocks, collectively referred to as the west african shield or craton has remained stable since about 1. Ghana falls mostly within the precambrian leoman shield of west africa. Lower crustal exhumation under transtension during the. Integrated 3d model from gravity and petrophysical data at. The districts of ghana were reorganized in 19881989 in an attempt to decentralize the government and to combat the rampant corruption amongst officials citation needed. These sequences, which belong to the birimian supergroup, extended approximately 200 kilometres km along strike, in a number of northeasterly trending belts. The reform of the late 1980s subdivided the regions of ghana into 110 districts, where local district assemblies should deal with the local administration. Pdf ghana is located along the gulf of guinea and atlantic ocean, in the sub region of west africa. Three major, discreet tectonic events produced the regional architecture of the sefwi belt. Expert petroleum geologists david roberts and albert bally bring you regional geology and tectonics. Wassa gold mine, ghana golden star resources is an established gold mining company that holds a 90% interest in the wassa, prestea and bogoso gold mines in ghana.
Ghana sociopolitical background andrew fisher 3 10 11 exploration upside potential 30 operational philosophy and infrastructure 111 environment, health and safety in ghana 120 community development in ghana 1 conclusions 141 40 jubilee development project phase 1 58 ghana well operations exploration history and regional geology. A continuum of extension chapter 3 models for the evolution of passive margins chapter 4 rift sequence stratigraphy chapter 5 structural control on synrift sedimentation, northwestern red sea margin, egypt chapter 6 carbonate dominated. Introduction to the geology of the various geological units of ghana. Geology and total petroleum systems of the gulf of guinea.
Barninga contribution to the stratigraphy of the birimian system of ghana, west africa. Its key focus is on both volcanic and nonvolcanic passive margins, and the importance of salt and shale driven by sedimentary. Pdf an overview of the geology and hydrogeology of nigeria. The licence was granted for a term of two years due to expire on 14th november 2015.
The structural development of the early proterozoic birimian and. The west african craton comprises archaean and palaeoproterozoic rocks underlying about 4. Mphil department of earth science university of ghana. The western part is within the western region of ghana in the juabeso bia district, which has its rebagliati geological consulting ltd. Ghana is a country in africa, along the gulf of guinea, just a few degrees north of the equator ghana encompasses plains, low hills, rivers, lake volta, the worlds largest artificial lake, dodi island and bobowasi island on the south atlantic ocean coast of ghana. Jelsma encyclopedia of life support systems eolss the worldwide 1. However, msc students in the department who have completed the required coursework component with a minimum cumulative grade point average of at least 3. Regional geology of northern ghana and the location of the namdini gold project. Like most of africa, the region is largely composed of ancient precambrian rocks at least 541 million years old. Keegan owns 90% of keegan resources ghana, with the government of ghana owning a 10% freecarried interest. The company holds the samreboi prospecting licence located in the wassa amenfi west district of the western region. Geog 304 regional geography of west africa, with special reference to ghana.
Ghana cote divoire gulf of guinea atlantic ocean 0 250 niger delta geology and total petroleum systems of the gulf of guinea province of west africa u. The regional geology of southern ghana is comprised of thick sequences of steeply dipping metasediments, alternating with metavolcanic units of proterozoic age 2. The country of ghana has a number of environmental issues. Regional geology of nigeria geology, nigeria the mapped area falls within the benue trough the oldest sedimentary rocks in nigeria is in this trough and they are of. First u pb zircon age of extrusive volcanism in the birimian supergroupof ghana west africa.
Damang goldfields lies within the tropical region of ghana with average monthly temperatures between 21c and 32c, is characterized by two distinct rainy seasons from march to july and september to november. Relief and drainage a large area called the voltaian basin in the northcentral part of the country where the elevation rarely exceeds 500 feet 150 metres. Table 11 summarizes mineral resources at the project as of december 2, 2016. Generated reservoir structural framework and spatial reservoir property. Geology and geochemical patterns of the birimian gold deposits. Revised manuscript received and accepted october 24, 20. In 2014, golden star produced 261,000 ounces of gold and is expected to produce 250,000 275,000 ounces in 2015. Gold deposits of the birimian and tarkwaian in ghana.
It has been written to provide you with a detailed overview of geologic rift systems, passive margins, and cratonic basins. Major ions and stable isotopes of groundwater in the cape coast granitoid complex g1 and lower birimian lb formations in the eastern region of ghana were evaluated to establish the source of recharge to the groundwater system. The immediate concession area is underlain principally by. West africas rich mineral resource potential makes the region an attractive proposition for investors from across the globe. The data for this study was collected by conducting fieldwork in the quesnel river. Tertiary to recent deposits these divisions are based on age, tectonics and lithologic characteristics. Asante gold corporation technical report on the fahiakoba gold project donald g.
Item 1 c geology and mineralisation regional geology. Technical report and mineral resource and reserve update for. Regional geology of africa 1991 edition open library. Ghana can be divided into four different geographical ecoregions. Much of the craton is covered by younger lithological units, but large areas in the north and south of the craton are exposed. October 2008 capital markets day slide 2 jubilee field. Petroleum potentials of the nigerian benue trough and anambra.
The ashanti belt is a northeasterly striking, broadly synclinal structure made up of lower proterozoic sediments and volcanics underlain by the metavolcanics and metasediments of the. Geology and total petroleum systems of the gulf of guinea province of west africa. Gold fields mineral resource and mineral reserve supplement. Whilst a reasonable amount of geological, geochemical and geophysical data is available. Seg foundation student field trip 17 april 22 may 1, 2018. Aside from modern sediments and some rocks formed within the past 541 million years of the phanerozoic eon, along the coast, many of the rocks in ghana formed close to one billion years ago or. Admission to mphil programmes in the earth science shall be a good msc degree in the relevant field. They are calciummagnesiumbicarbonate, sodium bicarbonate, sodium chloride. The west african craton and the pan african event, which presents the framework of west africa in the entire. The geological provinces of ghana ghana is divided into five geological domains or provinces namely. Regional geology the ore bodies are located within the tarkwaian system, which is an important stratigraphic component of the ashanti belt in southwestern ghana.
More important regional geological features are the northeastsouthwest trends of the volcanic. Kessenew concepts on the stratigraphy of the birimian system of ghana. Significant gold discoveries have shone a spotlight on countries sharing the birimian greenstone belts and, while mature mining countries like ghana and mali continue to lead the way in gold production, others are gaining. Some of the issues are deforestation, overgrazing and erosion. Buy regional geology of africa lecture notes in earth sciences on free shipping on qualified orders. Integration of structural and horizon mapping of 3d seismic volume, petrophysical studies of over sixty 60 wireline logs, stratigraphic analyses, reservoir property modeling and production information have been adopted to study eni field that has been experiencing production decline with increase in water output. This paper highlights the features of the ghanaian gold deposits that may aid. For more information on the map development and datasets see the geology resource page. The geological map of ghana the supracrustal rocks are highly deformed. Phanerozoic passive margins, cratonic basins and global tectonic maps, volume three in a threevolume series covering phanerozoic regional geology and tectonics. Five major hydrochemical facies were identified in the various rocks in the study area. Pdf ghana is located along the gulf of guinea and atlantic ocean, in the subregion of west africa. Environmental and engineering geology for urban planning in the accratema area. Embayment and the regional geology, a compressional zone with a positive geomorphic relief in centre of the structure has been interpreted as an active transpressive fault system, that formed at a restraining bend along a strikeslip fault fig.
Oyawoye 1964, rahaman 1976, odeyemi 1977 noted that the rocks in the study area show evidence of polyphase deformation with the plutonic episode of the pan african event being the most pervasive. Table 11 summary of mineral resources december 2, 2016 cardinal resources ltd. Pdf geological setting of the wassa gold deposit, sw ghana. In southwest ghana, the birimian comprises a sequence of mostly.
Deposit models for resource assessment, usgs scientific investigations report 20105070p pdf. Togo ghana region to east and the south mesozoic recent sediments of dahomey and niger coastal basins over the basement complex. An overview of the geology and hydrogeology of nigeria. Ghana, kenya, south africa yahoo mail sign up nigeria, ghana, kenya, sou. Are you a graduate searching for latest job opportunities in ghana. Chapter 1 regional geology and tectonics of sedimentary basins chapter 2 from rifts to passive margins. The population of the district is approximately 236,000. Arnold baler afloe 10362386 this dissertation is submitted to the university of ghana, legon in partial. However, international organizations such as fao, isric world soil information, the joint research centre of the european commission and others have compiled and harmonized national soil information in regional datasets or made soil maps available in digital format. Reply and answer a query letter from your boss at workplace office. Geology of ghana showing the location of damang gold mine anon.
Regional prospectivity modelling in datapoor areas. Namdini gold project category tonnage 000 t grade gt au contained metal. A plateau region in the southwest lies behind the densely populated southern coastal plains which are lined with lagoons regional geology the regional geology of southern ghana is comprised of thick sequences of steeply dipping metasediments, alternating. Rahaman 1988 noted that the south western basement complex of nigeria lies. However, the sedimentary rocks are particularly characterized by extensive. The regional geology of ghana is represented by a wide variety of precambrian igneous and metamorphic rock comprising the basement complex and covers about 54% of the country, mainly the southern and western parts fig. The basin is dominated by lake volta, an artificial lake that extends far into the central part of. For ghana, the natural hazards include the dry, dusty, northeastern harmattan winds, which occur from january to march. The petroleum geology of these priority and boutique provinces is described. To the south are the gulf of guinea and the atlantic ocean. Lithotectonic evolution of the geological units of ghana.
Ghana is located along the gulf of guinea and atlantic ocean, in the sub region of west africa. Abstract here we present a case study of prospectivity modelling over a region with both datarich and datapoor areas, in the kumasi basin, ghana. Iv summary this study investigated the influence of mining on the geochemistry of fine sediments in creeks and rivers. The petroleum geology and prospectivity of the neo. Ghana, the gold coast, is famous for its gold but oil exploration dates back to the end of the 19th century ghana has two cretaceous sedimentary basins tano and keta and two paleozoic basins saltpond and voltaian which have all been explored to some extent geological map of ghana oil seep. Wright relates the geology of ghana to the regional geology of west africa, and leube et al. A century of preparation ghana, the gold coast, is famous for its gold but oil exploration dates back to the.
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