The Mintom Formation (new): Sedimentology and geochemistry of a Neoproterozoic, Paralic succession in south-east Cameroon

Petrography and geochemistry of the Shilu Fe–Co–Cu ore district, South China: Implications for the origin of a Neoproterozoic BIF system

“…9a-f), and consequently can be distinguished from the almost flat PAAS-normalized REY pattern with slight uniform LREE depletion and no anomalies for modern lake and river waters (Bolhar and Van Kranendonk, 2007;Caron et al, 2010;Frimmel, 2009). The generally positive Ce anomalies in the majority of samples from this study also contrast with the commonly negative Ce anomalies of estuarine waters which represent the physical link between freshwater pathways and the open marine environment (Bolhar and Van Kranendonk, 2007).…”

“…The lacustrine sediments are also conspicuous in having virtually flat, unfractionated PAAS-normalized REY patterns, and no elemental anomalies (Bolhar and Van Kranendonk, 2007). Thus a shallow-water, lacustrine or lagoonal environment under freshwater influence (e.g., Caron et al, 2010) can be ruled out for deposition of the Shilu BIFs and interbedded host rocks. It is consistent with the fact that most the Shilu BIFs contain a Pr/Sm SN ratio of 0.22 to 0.79 (Appendices A4 and A6) and that the banded or impure dolostones typically show REY seawater signature (Fig.…”

Geophysical Contribution for the Determination of Aquifer Properties in Memve Ele, South Cameroon

“…The geological map of the dam site is shown in Figure 1. The site's geological feature is characterized by the development and distribution of faults and schiscosity in the same direction [4].…”

“…We assumed that the probable captive potable aquifer, which correspond to the third layer regarding its resistivity range (49 -100 Ω·m) observed, was formed before seismic events. Moreover, the geological map highlights the presence of obvious faults at these places [3,4] because seismic movements are noticeable on surface.…”

Geophysical Assessment of the Upper Dja Series Using Electrical Resistivity Data

“…Other schistocalcareous massifs have been indicated in the paleozoic to mesozoic trenches in Figuil, Moungo, Kompina and Logbadjeck. In the Dja series, the zones with the most important limestone deposit were revealed to be in relation with the sedimentary furrow of the Dja River and the Atog-Adjap outcrops [1][2][3][4][5][6][7][8]. These massifs are partially covered by the forest and the Dja phanerozoic basin.…”