A right bank tributary of the Niger River, the Mekrou, has formed a strongly incised river bed within clayey to sandy alluvium, locally interrupted by thin layers of gravel and coarser deposits. The alluvia give evidence to different climatic conditions: finer material was accumulated during flooding within a humid period, whereas the arid times seem to be reflected by coarser sediments. The cyclic facies change of sedimentation gives evidence for a repeated shilft in climate and hydrologic conditions, assuming that the alluvia originate in the upper Pleistocene. Some human artefacts are associated to the different gravel layers (subjacent bed = Palaeolithic, intermediate bed = middle Palaeolithic, overlying bed = ‘recent’ Palaeolithic, Neolithic, and iron Metallurgy). The absence of terraces, the occurrence of sandy sediments on the border of the river bed indicates to active morphodynamic processes; some angularly shaped meanders give evidence for a rapid change of drainage and leads to the hypothesis of a modified flow-off by the river’s recent capture.
Projet SAHEL, a multidisciplinary project, was initiated to investigate long-term patterns of human occupation in the environmentally sensitive and archaeologically under- researched Sahel. This paper outlines an initial field survey carried out in this context in December 2004, in the Mékrou Valley, Parc W, Niger. This pilot study incorporated specialists in Palaeolithic and historic archaeology, and aimed to refine our understanding of the chronology and nature of the occupation of this area, an occupation already known from earlier work by other researchers to have been extensive. On the Palaeolithic front, Projet SAHEL carried out sampling aimed at assessing the potential for OSL dating of the Pleistocene sediments lining the Mékrou Valley — dating remains the major unknown in this sequence — and explored questions linked with raw materials procurement and the pattern of Pleistocene landscape use. On the historical front, Projet SAHEL carried out the first systematic collection of ceramic material, and obtained dates on an iron-working episode which allowed the cross-checking of radiocarbon and optically stimulated luminescence dating and extends the known time-depth of iron-working in the area.
line of deep- est soundings and the right bank of the river. As to the delimitation in the River Mekrou sector, the chamber found that the boundary follows the median line of that river. While in many respects the chamber simply restated legal principles already developed by the previous jurisprudence
Court of Justice called upon to resolve the dispute concluded that the boundary along the River Mekrou was the median line. In so doing, it argued that, [T]he Parties did not provide the Chamber with any documents that would enable the exact course of the thalweg of the Mekrou to be identified. The
and (iii) the boundary in the sector of the River Mekrou. 19 Under Article 1 of the Special Agreement, the Parties agreed to submit the dispute to an ad hoc Chamber of the Court. Under Article 26, paragraph 2, of the Court’s Statute, the Court is entitled to form a chamber for dealing with a
the Niger River and Mekrou River sectors, which separate them, as well as sovereignty over several islands in the Niger River sector. Niger based its claim on the theory of the deepest points of navigation in the river as constituting the boundaries. Benin, on the other hand, claimed the borders to be
International Courts and Tribunals 10 (2011) 135–203 139 (b) the sector from the beginning of the Botou bend to the River Mekrou. 20 In Article 3 (1), the Parties requested the Court to authorize the following written proceedings: (a) a Memorial ﬁled by each Party not later than nine (9) months after the
River Niger", and the islands therein, as well as to "the sector in the river Mekrou". Finally, on 10 September 2002, El Salvador filed an application for revision of the 1992 judgment in the case concerning Land, Island and Maritime Frontier Dispute (El SalvadorlHonduras: Nicaragua intervening) in
the border with Nigeria (Andersen et al. 2005). This stretch is Dendi. On this short journey, the Niger has a rectilinear course oriented northwest/southeast and receives three major tributaries on its right bank draining the northeast of Benin: the Mékrou, the Alibori and the Sota. On the left bank