REPUBLIC OF CHAD. Ministry of Oil,Mines and Energy

Transcription

1 REPUBLIC OF CHAD Ministry of Oil,Mines and Energy presented by: Mr. DJEDOUBOUM Emmanuel Ambroise and Mr. BRAHIM ABDERAMANE YACINE November,2014/Johannesburg

2 I. INTRODUCTION Chad is a landlocked country located in the heart of Africa, between 7 and 24 N, 13 and 24 east longitude. It has an area of 1,284,000 km2 and extends from north to south and 1900 km from east to west over 900km. It shares borders with Libya, Sudan, Niger, Nigeria, Cameroon and the Central African Republic. The major part of the country is in the form of a plain altitude between m. Depression located SW of Faya Largeau, which represents the lowest point of the country, is about 120 m below the level of Lake Chad located in the approximate odds of 280 m. The Chad has three mountain ranges: the stage of Ouddaï east on the border with Sudan which altitudes vary between 500 and 1000 m, the central massif (Guera), which rises to 1600 m and the Tibesti north including several peaks over 3,000 m, and whose peak reaches 3415 m Emi Koussi.

3 Fifth African country area ( km2), filled with 11,274,106 inhabitants according to the last population census in 2009 and with a mineral potential not yet developed, Chad remains to date a virgin area.

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5 II. GEOLIGICAL BAKGROUND The Chad is between the Congolese craton south, the West African craton in the west and the Nile Craton northeast. The geology consists of two main geological units: Precambrian crystalline basement and sedimentary cover. The oldest rocks (granitoid) and Precambrian metamorphic rocks are found on the outskirts of two bowls: one of Erdis, which is an extension of the Libyan Kufra basin, and Lake Chad. They suffered major orogenic events (Pan late Proterozoic: 600/650 Ma). The Chadian space can be partitioned into ten groups, from north to south. Mayo Kebbi is located south-west of the country, on the border with Cameroon. It is a region consisting of previously developed land and pleated that extend into Cameroon hills. Land recognized are varied, and folded sedimentary, metamorphic and igneous Proterozoic and Archean. This is probably the most explored and best known geologically region.

6 The Guéra or Massif Central is a blunting of eroded base which forms a massive hill between N'Djamena and Abeche. The crystalline rocks, in particular, are poorly understood. Salamat, opposite the Central African Republic, is a very moist and rich in plant area. As for the north, the difficulties of access to the region's geology explain that remains the subject of many questions. Here is some brief geological settings Chad

7 III.RESSOURCES OF URANIUM Uranium mineral resources of Chad are distributed in several ways throughout the territory: In the late 1940, the mapping showed the presence of uranium and thorium index of the most developers are in BET North and in Mayo Kebbi West and South. Most of these indices are associated with alkaline granites, leuco granites or syenites of Protorozoïque. There are other indications of thorium in sedimentary environment in relation to deposits from ancient regolith overhaul. Clues uranium "primary" include in the Tibesti, north Aouzou towards Yedri, ten uranium occurrences identified in the granitic basement fractures

8 in Enneri Miski, south of Tibesti, an index located in southeastern Zouar; Finally, in the Mayo Kebbi West, madazang or surveys have to recognize the presence of pitchblende, coffinite of silicates, U-Pb. The exploration minéralisation attribute this to an overlapping area shaer zones Units Néoprotorozoïque. Clues to Thorium and sedimentary uranium are reported in the Paleocene cover: In the Cambro-Ordovician conglomerate regions Boubao, Wadi Baku (near fada); At the base of the Ordovician sandstones on the periphery of the Tibesti;

9 GEOLOGICAL MAP OF CHAD

10 A.URANIUM OF MADAGZANG The deposit Madagzang (Léré,Mayo Kebbi West) is best known because it has been the subject of previous studies by UNDP and the IAEA (International Atomic Energy Agency) between 1970s and 1980s these studies were supplemented by exploration Chad Mining Services Limited. The Chad Mining Services Company has completed over 170 vertical wells,22 trenches and a dozen drilling inclined concentrations vary from one well to another the greatest value is in the order of 4000ppm in wells and is 50 to 100 ppm in surface during the mapping. The deposit is estimated at 8,000,000 tons.

11 a. Methodology: CMS works are performed from 2007 to 2010 as follows: Airborne (airbone survey); The mapping (mapping); Utilization spectrometer hand and Probe Drilling and trenching; The sampling; Log drilling and log trenches; Entering data into the SABLE software

12 IV.EXPLORATION PROSPECTS Guera at the Centre of the country, has a potential still unclear, alkaline granitic (attributed to the Pan African) Added to this is the entire province of BET(Borkou-Ennedi-Tibesti) presents a potential whatsoever in base with differentiated granites, or in training coverage, just outside the Tibesti. In particular, continental clastic formations interspersed Paleozoic paleo-fracture subméridiennes presents comparable to that of the region of the Air in Niger characteristics. From the above uranium in Chad is not explored in its entirety, it necessary to deploy the means to highlight the areas of indices which we have just discussed to better understand the subject of this deposit very helpful as energy.

13 Maesure of concentration of Uranium of Léré

14 WELL DRILLING

15 SAMPLE OF CORE DRILLING HEMATISED

16 CORE DRILLING

17 Spectrometer Sample of core drilling

18 MAP OF DIFFERENTS ZONES OF FAVORABILITY OF CONCENTRATION OF URANIUM Zones of high favorability zones of midlle favorability Zones of low favorability

19 V. CONCLUSION In conclusion we can say that the Republic of Chad is a relatively landlocked territory without easy access to the sea; it is important to target the development of areas of the Massif Central; Borkou-Ennedi-Tibesti to evaluate all of the reserves and this area of uranium developer little known in our country.

20 THANK YOU FOR YOUR ATTENTION!!!