Fluids, faulting and earthquakes in the brittle crust: recent advances and new challenges by Fabbri, Olivier, Raimbourg, Hugues, Leclère, Henri

“…As experimentally shown, a high pore fluid pressure $p_{f}$ can fracture intact rocks or reactivate pre-existing fractures. The preference of reactivation over the formation of a new fracture depends on the orientation of the pre-existing fracture with respect to the stress axes and on $p_{f}$. …”
Get full text

HEAVY CONCENTRATE GOLD ASSOCIATIONS IN THE BASIN OF THE KUKULKINDZHA CREEK (OKHOTSK REGION OF THE KHABAROVSK KRAI) by A.Ya. Nefedova, I.K. Kotova, М.А. Pavlova, D.I. Smirnov, D.А. Guskov, S.V. Petrov

“…The minerals of the garnet group with dominant grossular-andradite composition and the minerals of the pyroxene group (diopside–hedenbergite series characteristic of contact metamorphosed rocks) are always found in heavy concentrates. Three stable mineral assemblages of native gold are identified on the basis of statistical analysis of geochemical and mineralogical data. …”
Get full text

Olabiyi Babalola J. Yai (1939-2020): Philosopher, Polymath, Humanist by Sanya Osha

“…If rough, uneven and perhaps sometimes imprecise on the surface, it was an imprecision that seemed deliberate, forged in the hardened crucible of character formation, with the range and sturdiness of mountain rocks or the blasted rigor of gnarled ancient trees. …”
Get full text

Temporal and spatial heterogeneity of the Ailaoshan–Song Ma–Song Chay ophiolitic mélange, and its significance on the evolution of Paleo-Tethys by Lin, Wei, Liu, Fei, Wang, Yin, Meng, Lingtong, Faure, Michel, Chu, Yang, Nguyen, Vuong Van, Wu, Qinying, Wei, Wei, Thu, Hoai Luong Thi, Vu, Tich Van

“…The Silurian and Devonian sedimentary rocks of the Indochina block are the major provenance of the M1 unit. …”
Get full text

MINERALOGICAL FEATURES AND PHYSICOCHEMICAL FORMATION CONDITIONS OF VEIN MINERALIZATION OF THE SOUTHERN FLANK OF THE SAF´YANOVKA MASSIVE SULFIDE DEPOSIT (CENTRAL URALS) by N.P. Safina, A.V. Korovko, I.A. Blinov, N.N. Ankusheva, M.A. Rassomakhin, K.A. Filippova

“…The sulfide veins include sphalerite-galena and sphaleritepyrite-chalcopyrite types, in which sulfides are associated with gypsum, carbonates, barite or quartz. Fluorite in host rocks is closely related to carbonates (dolomite, calcite, and siderite), kaolinite and magnesiocarpholite. …”
Get full text

Multiscale modeling of reservoir systems using geostatistical methods by Chihi, Hayet, Hammami, Mohamed Amin, Mezni, Imen, Belayouni, Habib, Ben Mammou, Abdallah

“…Identifying factors and quantifying the processes, influencing the extent of reservoir rocks and the distribution of their heterogeneities are fundamental prerequisites to improve the characterization of reservoir connectivity and its dynamic functioning. …”
Get full text

Cretaceous Limestone Dolomitization and Argument of Its Mg2+ Sources: Exampling the Bekhme and Qamchuqa Formations in the Zagros Collision Belt by Kamal Haji Karim, Sherzad Tofiq Mohamad

“…Third is the barrenness of most of the fault surfaces and their surrounding rocks with selective dolomitization. Fourth is the sharp boundary between the dolomite and limestone layers, indicating a sudden environmental change from lagoon to reef or forereef. …”
Get full text

Rapid landslide detection from free optical satellite imagery using a robust change detection technique by Rosa Coluzzi, Angela Perrone, Caterina Samela, Vito Imbrenda, Salvatore Manfreda, Letizia Pace, Maria Lanfredi

“…Due to the complexity of the phenomenon which might involve the displacement of massive rocks, soil, and both wet and dry vegetation from hillslopes, and the significant impact on the safety of the population and road infrastructure, the development of specific procedures for the rapid detection of landslides is extremely challenging. …”
Get full text

Insights on the Permian tuff beds from the Saint-Affrique Basin (Massif Central, France): an integrated geochemical and geochronological study by Poujol, Marc, Mercuzot, Mathilde, Lopez, Michel, Bourquin, Sylvie, Bruguier, Olivier, Hallot, Erwan, Beccaletto, Laurent

“…It highlights the existence of two different groups of felsic volcaniclastic rocks. The first group, located at the base of the basin and attributed to the Stephanian continental stage, is related to a late-orogenic volcanic setting and corresponds to calc-alkaline trachy-andesitic tuffites that could not be dated due to the lack of volcanic zircon. …”
Get full text

Mineralogy and geochemistry of shale from Shanxi Formation, Southern North China Basin: Implication for organic matter accumulation by Qian Chen, Pei Li, Xiaoliang Wei, Changsheng Chen, Wei Dang, Haikuan Nie, Jinchuan Zhang

“…The Permian Taiyuan and Shanxi coal-bearing formations are recognized as the primary source rocks and promising shale gas reservoirs in North China. …”
Get full text

Reflections on the role of chemical osmosis mechanisms on the long-term behavior of a collapsed salt cavity by Ledoux, Emmanuel, Hertz, Emmanuel, Robinet, Jean-Charles, Combes, Pierre

“…Recent work on chemical osmosis in clay media, motivated by research on the geological storage of nuclear waste in a clay layer, raises questions about the role of this mechanism on the long-term behavior of the system.Based on a bibliographical approach, the article presents a brisk synthesis of the theory of chemical osmosis and discusses its application to the case of clayey rocks which can constitute imperfect membranes capable of generating osmotic pressures.First, the article presents the equations representing the flow of the fluid and the solute transport according to a simplified formulation adapted to the geometry of the system. …”
Get full text

Trend analysis of precipitation and temperature in Lahaul-Spiti district, Himachal Pradesh, India by Pankaj Kumar, Dhanjit Deka, Md. Arif Husain, Manish Kumar, Pandurang Choudhari, Shipra Singh, Azka Kamil, Abhishek Banerjee

“…The increase in rainfall can lead to a higher incidence of mudflows, landslides, floods, and other related events, as the region is made up of sedimentary rocks. Thus, it is crucial to continuously monitor the trends in temperature and precipitation.…”
Get full text

Changes of Narrative: Osvald Sirén’s Photographic Modeling of Modern Research on Chinese Garden by Jiuwen GU, Yuanfeng SHI, Shan JIA

“…The expressiveness of Osvald Sirén’s individual works attempts to take into account all such elements as the complexity of gardens, the wandering line of sight brought about by scatter perspectives, the flow of light and the emphasis on the artistic conception of rocks. The localized images taken from different perspectives construct a distinct narrative language of gardens, an alternative spatial narrative language to the traditional garden narrative, accompanied by the emergence of an emerging research branch of garden space reading logic — a school of garden research based on modern iconography.ConclusionPhotographic interventions in garden space research were constrained by many technical conditions which posed substantial challenges to early photography. …”
Get full text

Rome à la campagne : les décors en pierre de la villa de la Grande Boussue à Nouvelles (Mons, Belgique) by Catherine Coquelet, Roland Dreesen, Éric Goemaere, Éric Leblois, Marie-Thérèse Raepsaet-Charlier

“…Belgian stones are predominantly present: Devonian and Carboniferous grey-blue limestones, various Belgian marbles including the Gris des Ardennes and the Rance red marble, as well as clayey limestones of the Tournai stone type. Two magmatic rocks originate from Germany: the Berkum trachyte and the Trier diabase. …”
Get full text