277 Result(s)
within
Ben Ep**er
Earth Sciences
Geology
-
Article
Open AccessMagnetite geochemistry as a proxy for metallogenic processes: A study on sulfide-mineralized mafic–ultramafic intrusions peripheral to the Kunene Complex in Angola and Namibia
Trace element concentrations in magnetite are dictated by the petrogenetic environment and by the physico-chemical conditions during magmatic, hydrothermal, or sedimentary processes. This makes magnetite chemi...
-
Article
Open AccessPresent and paleo-hydrogeological reconstruction of a complex deep groundwater system in a tectonically active region (Golan Heights, Middle East)
The geochemical and isotopic composition of deep groundwater in sedimentary aquitards reveals a complex paleo-hydrological system affected by intensive tectonic activity. Water samples collected from deep rese...
-
Article
Open AccessMelt infiltration in a crystal mush and pegmatoid formation in the platiniferous Merensky Reef, Bushveld Complex, South Africa
Giant mafic-ultramafic layered intrusions of Archaean-Proterozoic age are the fossilised remnants of huge injections of silicate magma in the Earth’s crust and are our most important repositories of platinum-g...
-
Article
Underestimated volcanic hazard of Santorini
Volcanism after large, caldera-forming eruptions is thought to be muted. Exploration of the partially submerged caldera of Santorini reveals that large explosive eruptions have occurred since the caldera formed.
-
Article
Distribution, intensity, and timing of palagonitization in glaciovolcanic deposits, Cracked Mountain volcano, Canada
The Cracked Mountain edifice is a basaltic subglacial volcano (i.e. tuya) situated in southwest British Columbia, Canada. The edifice is dominated by subaqueously deposited, massive to poorly stratified, varia...
-
Article
Publisher Correction: Atmospheric methane variability through the Last Glacial Maximum and deglaciation mainly controlled by tropical sources
-
Chapter and Conference Paper
Halokinesis and Diachronism in the Gulf of Gabes
Due to its particular tectonic position in the North African margin, the geological history of Tunisia strongly depends on the relative motion of the African plate, especially since the Jurassic period as a re...
-
Chapter and Conference Paper
Lithostratigraphy, Whole-Rock, and Sm–Nd Isotopic Data of the Ediacaran Magmatic Rocks from the Zgounder Ag–Hg Deposit (Siroua Massif, Central Anti-Atlas, Morocco)
In the Zgounder Ag-Hg high-grade deposit, Ediacaran magmatic rocks of different types and compositions have been intruded by several dolerite and rhyolite dike swarms. This contribution focuses on the 610–541 ...
-
Chapter and Conference Paper
Miocene Magmatism in Northern Tunisia: Characterization and Geodynamic Implications
The Nefza mining district in northern Tunisia comprises a wide variety of magmatic rocks related to the Cenozoic Mediterranean geodynamic history. Magmatic rocks consist mainly of granodiorite and rhyodacite e...
-
Chapter
Geoheritage, Geotourism, and Geoparks in North Africa: Current State
North Africa has a rich geological history that spans from the Archean to the Quaternary period, which is well reflected in its varied geological and geomorphological landscapes. This region has provided a div...
-
Chapter and Conference Paper
The Productivity Equation for Slanted Wells in Tight Water-Bearing Gas Reservoirs Considers Multiple Factors
As a highly potential unconventional natural gas resource, accurately evaluating the production capacity of tight sandstone gas reservoirs is of great significance for their development. This article takes inc...
-
Chapter and Conference Paper
Development and Application of Flushing Fluid Used for Shale Gas and Tight Gas
In the process of drilling horizontal Wells such as shale gas and tight gas, oil-based mud is used, which makes it difficult to flush mud cake in cementing process and poor compatibility with cement slurry lea...
-
Chapter and Conference Paper
Principle and Application of Distinguishing Oil-Water Contact in Complex Architectural Units Based on Pressure Gradient Method
Pressure gradient method is based on the principle of connectedness, using formation pressure test data to character pressure gradient curves of reservoir fluids and distinguish oil water contact. The greatest...
-
Chapter and Conference Paper
Map** the Shoreline Evolution in Response to Sea Level Rise Along Agadir Bay, Morocco: Geospatial and Empirical Approach
Global warming resulting from meteorological and oceanic perturbations manifests itself, among other things, in the rise of sea level and the increase in the energy of marine storms, as well as their frequency...
-
Chapter and Conference Paper
Reservoir Architecture Characterization and Rolling Development Based on Well Logging-Seismic Data and Dynamic Information Fusion—A Case Study of Sha 1 Member in Block D of Nanpu Oilfield in the BHW Basin
The ultra-low permeability compound mouth bar in small continental rift lake basin is the main development unit of oilfield. However, due to the multiple effects of complex reservoir structure, rapid lateral v...
-
Article
Atmospheric methane variability through the Last Glacial Maximum and deglaciation mainly controlled by tropical sources
Constraining the causes of past atmospheric methane variability is important for understanding links between methane and climate. Abrupt methane changes during the last deglaciation have been intensely studied...
-
Article
Prediction of new polymetallic mineralization prospectivity zones using a combination of remote sensing, geology, and geochemistry data in the northeastern part of the Saghro inlier, Moroccan Anti-Atlas belt
In the Anti-Atlas belt, the Saghro massif stands out as the most promising area for exploring bases and precious metals. It serves as a noteworthy example of effectively utilizing various geological layers by ...
-
Article
Open AccessShallow-water hydrothermal venting linked to the Palaeocene–Eocene Thermal Maximum
The Palaeocene–Eocene Thermal Maximum (PETM) was a global warming event of 5–6 °C around 56 million years ago caused by input of carbon into the ocean and atmosphere. Hydrothermal venting of greenhouse gases p...
-
Article
Spatial prediction of groundwater levels using machine learning and geostatistical models: a case study of coastal faulted aquifer systems in southeastern Tunisia
Develo** efficient methods for groundwater level (GWL) prediction is essential for identifying the groundwater flow pattern, characterizing the spatial extent of contaminant plumes, and enhancing water resou...
-
Article
Grassland responses to elevated CO2 determined by plant–microbe competition for phosphorus
Rising atmospheric CO2 has stimulated plant productivity, with terrestrial ecosystems currently absorbing nearly one-third of anthropogenic CO2 emissions. Increases in photosynthesis can subsequently lead to incr...
