The accuracy of the T₂ cutoff value directly impacts the precision of calculating bound fluid saturation, mobile fluid porosity, and permeability in nuclear magnetic resonance (NMR) measurements. The porous structure of deep tight sandstone reservoirs is complex, characterized by low porosity, low permeability, and strong heterogeneity. As a result, fixed T₂ cutoff values are not suitable for these reservoirs. In order to improve the calculation precision of T₂ c...

Geology 

This research aims to explore changes in Land Use and Land Cover (LULC) and how LULC have an influence on the Land Surface Temperature (LST) in Rupandehi district. Multiple Landsat imagery across the two decades was utilized, particularly Landsat 7 ETM for 2003 and 2013, and Landsat 8 OLI/TIRS for 2023. Both QGIS and ArcGIS Pro were used for spectral indexing. LULC classification was performed in R using Random Forest, where 5 major classes were categorized. A confusion matrix that was also per...

Geology  Geography  Geomorphology  Environmental Sciences 

This paper focuses on the cooperation between Twangiza Mining, an industrial highland long-term open-pit gold mine, in the eastern part of the DR Congo, and neighboring communities. Various projects have been implemented, including: water supply, education, health care, infrastructure, ecological rehabilitation, humanitarian assistance, and sustainable income generation through income generating activities. Results show that most people in the local community used to live in aggravated poverty, ...

Geology  Geophysics  Natural Geography  Geography  Geomorphology  Mineralogy  Environmental Sciences 

The Liaoshang gold deposit in the Jiaolai Basin (North China Craton) has had its deep resource potential limited by inadequately understood vertical metallogenic patterns. Using 220 drill holes, 523 stope samples (38879.7 m), and 18,415 Au assays, this study employs implicit 3D modeling to decouple deep-shallow mineralization systems. A critical boundary at -400 m is identified: Shallow (＜-400 m) NE-striking steep veins (avg. 1.2 m thick, Au ＞ 5.5 g/t) are controlled by monzogranite-marble conta...

Geology  Mineralogy 

The comparative analysis of conservation management of Simien Mountains National Park (SMNP) and Qianjiangyuan National Park (QNP) in China provides deductions that can be successfully implemented as conservation strategies and replicated in other protected areas. QNP benefits from a tiered administrative framework with strong provincial leadership and stakeholder collaboration yielding versatile conservation strategies. Effective land-use regulations and zoning have kept more than 81.7% of the ...

Geology 

As of 2005, the city of Saidia has undergone substantial urban expansion, which has led to the Tazgrarte Forest, a major urban green space, not just for the citizens but also for tourists alike, to decline in urban forests. In this regard, this research aims to assess the differences in the forest cover of Tazgrarte Forest from the period of 2005-2025, concentrating on the impact of urban expansion at three critical points in time: 2005, 2015 and 2025. Forested area reduction and urban growth dy...

Geology  Geophysics 

Shanxi Province, a leading coal-producing region in northern China, holds abundant reserves of bituminous and subbituminous coal critical to the nation’s energy sector. However, extensive coal mining has left behind Goaf areas underground voids and fractured zones that pose serious safety hazards and environmental risks. These challenges require innovative approaches to ensure sustainable resource management and ecological protection. This work aims to enhance the exploration and management of G...

Geology  Geophysics  Environmental Sciences 

Pore structure determines the reservoir capacity and permeability, which is the key content of unconventional oil and gas exploration and development research. In this study, a series of analysis methods, such as casting thin sections, scanning electron microscope, X-ray diffraction and high-pressure mercury injection, are used to study the petrological characteristics, physical characteristics and micro-pore structure of the Chang 6 reservoir in the Wuqi area. Based on a clear comprehension of ...

Geology 

Fluoride, whose levels are higher than the World Health Organization (WHO) recommended level of 1.5 mg/l, results in health issues. Therefore, fluoride contamination is a matter that calls for concern by all people and governments, especially in countries where volcanicity has been experienced. This study sought to model spatial variation, distribution, and prediction of fluoride levels in groundwater in the river Njoro catchment. This study aimed to observe the levels of fluoride and give recom...

Geology 

Extensive research has been undertaken to model the petroleum system of the Maui Field within the Taranaki Basin, New Zealand. Nevertheless, there are persistent uncertainties surrounding its intricate petroleum system, the processes of hydrocarbon generation, and migration. Despite its status as New Zealand’s largest petroleum producer, the historical account of hydrocarbon formation, migration, and charging in this field remains largely enigmatic. This systematic literature review offers a com...

Geology