Geographical Distribution of Kumadugu-Yobe River Basin Wetlands

Understanding the availability and distribution of wetlands is key to conservation, exploitation and better management of wetlands resources. The wetlands of Kumadugu-Yobe river basin are widely spread within the sedimentary formation beyond the famous Hadejia Nguru wetlands. This study identified and map out the spatial distribution of KYRB wetlands using field observation information, the basin base map, the topographical map and high resolution Google image and Advance very High Resolution spectroradiometer (AVHRS) NDVI (Normalized Vegetation Differncial Index) data of 2018, in mapping the wetlands spatial distribution pattern. The findings of the study classified the basin wetlands in to flood plain along the river banks, surface depressions ponds and Oasis. The basin wetlands are spread all over the sedimentary geological formation of the basin. The wetlands of the mid and downstream parts of KYRB are largely spread along river Yobe, river Kumadugu-Gana, small tributaries (Alaraba, Damaturu, Budum-Gana among others), famous Hadejia-Nguru wetlands, Oases at the northern parts of the river Yobe and isolated pockets of ponds. The study recommended for effective geo data base for the wetlands.

New insights into the depositional environment and stratigraphic position of the Gugu Breccia (Pădurea Craiului Mountains, Romania)

The study of the carbonate clasts and matrix of a problematic sedimentary formation (the Gugu Breccia) from the Pădurea Craiului Mountains reveals new information concerning its depositional environment and stratigraphic position. The identified microfacies and micropaleontological assemblages demonstrate that all the sampled limestone clasts from the Gugu Breccia represent remnants of a fragmented Urgonian-type carbonate platform. The Barremian age of the clasts suggests that the stratigraphic position of the Gugu Breccia at its type locality could be uppermost Barremian-lowermost Aptian, a fact demonstrated also by the absence of elements from Lower Cretaceous carbonate platforms higher in the stratigraphic column (e.g., Aptian or Albian) of the Bihor Unit. The sedimentological observations together with the matrix mineralogy bring new arguments for the recognition of terrigenous input during the formation of the Gugu Breccia.

Banatite metallogeny of North Poiana Ruscă Mts. revisited

The somehow ignored northern portion of the Banat-Timok Province/Banatitic Belt is reconsidered in metallogenetic terms after updated evaluation based on recent considerations and long ago recognized tectonic, magmatic and metallogenetic evidence. Banatitic occurrences in the investigated area are confined to the NE extent of the non productive alkali-calcic alignment up to the Mures Valley where it joins the sub-latitudinal Bega-Mures branching lineament. Banatitic edifices related to this junction depart from the alkali-calcic trend, drifting to the productive calc-alkaline porphyry environment, characteristic of Timok-South Banat metallogeny. The assemblage of Cretaceous volcanics/pyroclastics and sedimentary formation with subvolcanic and blind intrusions with associated alteration and mineralization creates a environment that reminds the well-known Timok setting. Despite the so far poor understood setting with underestimated economic attractivity, integrated geological-geophysical evidence underscore the potential of this peculiar Timok like volcano-plutonic structure associated with blind porphyry Cu-Au and distal base metal expression, fostering future investigations.