The eastern Democratic Republic of Congo has experienced constant instability and conflict since 1996. With the collapse of the state of Zaire and the renaming of the country by the late Laurent Desire Kabila in late 1996, there were high expectations from the Congolese population that the country was going to move forward. However, in less than two years, the central government in Kinshasa was facing a new rebellion from the east of the country, followed by widespread violence and criminal activities by armed and militia groups. Although military intervention from Zimbabwe, Namibia and Angola halted the rebellion march to Kinshasa, the capital city of DRC, and allowed the DRC government to sign peace agreement with its opponents in 2002; since then, the prospect of peace in the eastern DRC, especially the North and South Kivus seems bleak. Since 2002, that region has been the theatre of armed and militia groups (both local and foreign), owing to, in the views of various experts, the presence of mineral resources to support their criminal activities, as well as the economic interests of regional actors to create proxy militia and armed groups in the absence of central government in much of eastern DRC. The purpose and rationale of this study is to critically identify actors in the postconflict reconstruction process, and examine the role of mineral resources among other perpetuating factors of the protracted conflict in eastern DRC, in order to arrive at a comprehensive analysis of the reasons for the failure of peace building and post-conflict reconstruction processes that have been undertaken. This study aims to fill a gap in available literature, by pointing to some conflict drivers and factors which have previously been overlooked in post-conflict reconstruction, and in existing research on the topic, especially the role of mineral resources in sustaining conflict. A thorough conceptualization of relevant conflict theory and a historical overview of the conflict in DRC were provided as a point of departure in order to understand other factors that contribute to the intractability of conflict in eastern DRC, this study found that those factors were rooted in the legacy of colonialism; the bad leadership under both the colonial powers and subsequent government of Joseph Mobutu, manipulation and politicization of ethnic identities especially in the South and North Kivu and the geopolitical location of the eastern DRC. This study further established that the presence of mineral resources in eastern DRC indeed contributes to the continued insecurity in that region by providing succour to armed groups, thus undermining peace agreements especially the Pretoria agreement that formally ended hostilities in 2002. Furthermore, the study found that the issue of mineral resources is not the sole driver of the eastern DRC conflict, as the issues of ethnic polarisation especially, discrimination against Kinyarwanda speaking Congolese in the east, and the view that only military means can solve this problem; coupled with other security threats including the presence of foreign militia groups motivate the neighbouring countries of Uganda, Rwanda and Burundi to constantly meddle in DRC's internal affairs. The study suggests that additional research be conducted to further investigate the regional dimensions of the conflict and how perceived interests in mineral revenue contribute to the polarisation of the population in eastern DRC; leading to the proliferation of armed groups.

The one of the most important Eras of the Earth history, i.e. Neoproterozoic (1000-542 Ma),<p>was an enigmatic period characterized by the development of the first stable long-lived ~1.1-<p>0.9 Ga Rodinia and 550-500 Ma Gondwana supercontinents, global-scale orogenic belts,<p>extreme climatic changes (cf. Snowball Earth Hypothesis), the development of microbial<p>organisms facilitating the oxidizing atmosphere and explosion of eukaryotic forms toward the<p>first animals in the terminal Proterozoic. This thesis presents a multidisciplinary study of two<p>Neoproterozoic basins, i.e. Bas-Congo and Sankuru-Mbuji-Mayi-Lomami-Lovoy, in and around the Congo Craton including sedimentology, geochemistry, diagenesis, chemostratigraphy and radiometric dating of carbonate deposits themselves.<p><p>The Mbuji-Mayi Supergroup sequence deposited in a SE-NW trending 1500 m-thick siliciclastic-carbonate intracratonic failed-rift basin, extends from the northern Katanga Province towards the centre of the Congo River Basin. The 1000 m-thick carbonate succession is related to the evolution of a marine ramp submitted to evaporation, with ‘deep’ shaly basinal and low-energy carbonate outer-ramp environments, marine biohermal midramp (MF6) and ‘very shallow’ restricted tide-dominated lagoonal inner-ramp (MF7-MF9) settings overlain by lacustrine (MF10) and sabkha (MF11) environments, periodically<p>submitted to a river water source with a possible freshwater-influence. The sequence stratigraphy shows that the sedimentation is cyclic in the inner ramp with plurimetric ‘thin’ peritidal cycles (± 4 m on average) recording a relative sea level of a maximum of 4 m, with fluctuations in the range of 1-4 m. The outer/mid ramp subtidal facies are also cyclic with ‘thick’ subtidal cycles characterized by an average thickness of ± 17 m, with a probable sealevel<p>fluctuations around 10 to 20 m. The geochemistry approach, including isotopic and major/trace and REE+Y data, allows to infer the nature of the dolomitization processes operating in each carbonate subgroup, i.e dolomitization may be attributed to evaporative reflux of groundwater or to mixing zones of freshwater lenses. The latest alteration processes occured during the uplift of the SMLL Basin. New ages, including LA-ICP-MS U-Pb laser ablation data on detrital zircon grains retrieved in the lower arenaceous-pelitic sequence (BI group), combined with carbon and strontium isotopic analyses, yielded a new depositional time frame of the Mbuji-Mayi Supergroup between 1176 and 800 Ma reinforcing the formerly suggested correlation with the Roan Group in the Katanga Province.<p><p>In the Democratic Republic of Congo, the Sturtian-Marinoan interglacial period was previously related to pre-glacial carbonate-dominated shallow marine sedimentation of the Haut-Shiloango Subgroup with stromatolitic reefs at the transition between greenhouse (warm) and icehouse (cold) climate periods, commonly marked by worldwide glacigenic diamictites and cap carbonates. This thesis highlights that these deposists record as a deepening-upward evolution from storm-influenced facies in mid- and outer-ramps to deepwater environments, with emplacement of mass flow deposits in toe-of-slope settings controlled by synsedimentary faults. In absence of diagnostic glacial features, the marinoan Upper Diamictite Formation is interpreted as a continuous sediment gravity flow deposition along carbonate platform-margin slopes, which occurred along tectonically active continental margins locally influenced by altitude glaciers, developed after a rift–drift transition. The maximum depth of the deepening-upward facies is observed in the C2a member. The<p>shallowing-upward facies exibit a return of distally calcareous tempestites and semi-restricted to restricted peritidal carbonates associated with shallow lagoonal subtidal and intertidal zones submitted to detrital fluxes in the upper C2b to C3b members.<p>The geochemistry highlights (i) the existence of a δ13C-depth gradient of shallow-water and deep-water carbonates; (ii) the carbonate systems were deposited in oxic to suboxic conditions; and (iii) all samples have uniform flat non-marine shale-normalized REE+Y distributions reflecting<p>continental detrital inputs in nearshore environments, or that the nearshore sediments were<p>reworked from ’shallow’ inner to mid-ramp settings in deep-water slope and outer-ramp<p>environments, during the rift-drift transition in the basin. The pre-, syn- and post-glacial<p>carbonate systems could record a distally short-lived regional synrift freshwater-influenced<p>submarine fan derived from nearshore sediments, including gravity flow structures, which are<p>attributed to regional tectonic processes due to a sudden deepening of the basin caused by<p>differential tilting and uplifting of blocks, related to the 750-670 Ma oceanic spreading of the<p>central-southern Macaúbas Basin.<p><p>Combining sedimentology, isotopes and trace elemental geochemistry, the thesis highlights<p>that the δ13C variations in the Neoproterozoic carbonates are complex to interpret, and can be<p>related to: (i) the existence of a δ13C-depth gradient; (ii) the exchange between isotopically<p>light carbon in meteoric waters and carbonate during lithification and early diagenesis; and<p>(iii) isotopic perturbations due to regional metamorphism. Considering the possible englaciation of the Earth (Snowball Earth hypothesis), the Mbuji-Mayi Supergroup and West<p>Congolian Group seem reflected the intimate relationship between glaciations and tectonic<p>activity during the break-up of the Rodinia supercontinent, followed by the rift–drift<p>transition, and finally the pre-orogenic period on the passive continental margin. / Doctorat en Sciences / info:eu-repo/semantics/nonPublished