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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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East Africa
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Malawi (1)
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North Africa
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Egypt
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Primary terms
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Africa
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Asia
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Indonesia
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carbon
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Cenozoic
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Pleistocene
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Tertiary
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-
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Paleogene
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upper Oligocene (1)
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ceramic materials (4)
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Komi Russian Federation (1)
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Italy
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Malay Archipelago
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maps (1)
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Mesozoic
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Cretaceous
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Dakota Formation (1)
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Upper Cretaceous
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Belle Fourche Shale (1)
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Campanian (1)
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Senonian (1)
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Triassic
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Upper Triassic
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metal ores
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thermal analysis
An insight on the polyphase thermal history of the Internal Rif (Northern Morocco) through Raman micro-spectroscopy investigation
Pore structure evolution characteristics of continental shale in China as indicated from thermal simulation experiments
Evaluation of forensic soil traces from a crime scene: robbery of a safety deposit box in Brazil
Abstract Soil traces can be used as evidence in criminal investigations due their transferability, great variability and persistence. The soil samples originated from a crime scene that occurred in the Curitiba Metropolitan Region, Brazil. Physical, chemical and mineralogical analyses were carried out on the soil samples. All results were statistically analysed using multivariate analysis (PCA) to verify the relative positioning of soil traces which had been recovered from a stolen safety deposit box (SDB) from a vehicle suspected of being used in the SDB transportation, and from the site allegedly used in the opening of the SDB. The methods employed were effective in discriminating between the sampling sites. The soil from the site used in the opening of the SDB could be excluded as being the location where the soil transferred to the SDB had originated as it was different in many characteristics.
Thermo-fluid–mechanical numerical simulations of surface subsidence at the site of underground coal gasification
On the crystal chemistry of sulfur-rich lazurite, ideally Na 7 Ca(Al 6 Si 6 O 24 )(SO 4 )(S 3 ) – ·nH 2 O
Rock-magnetic and archaeomagnetic investigations on archaeological artefacts from Maharashtra, India
Abstract Archaeointensity and rock-magnetic studies were undertaken on 49 baked clay artefacts from four archaeological sites (Ter, Junnar, Nalasopara and Kanheri) in Maharashtra, India. Rock-magnetic properties, including bulk magnetic susceptibility, magnetic remanence and thermomagnetic analysis, indicate the presence of a low-coercivity magnetite in fine (superparamagnetic, single domain) grain-sizes. The ratio of anhysteretic remanent magnetization to saturation isothermal remanent magnetization, the reversible high-temperature susceptibility curves and the 3-axes isothermal remanent magnetization tests also indicate that the artefacts dominantly possess fine-grained magnetic particles, carrying a stable thermoremanent magnetization (TRM). Archaeointensity was estimated using Coe's modified Thellier method corresponding to the linear behaviour of natural remanent magnetization loss and TRM gained plots, which were evaluated with ThellierTool4.0 software. Cooling rate and anisotropy of the TRM corrections were applied and the corrected intensities were used to calculate a mean archaeointensity value for each one of the four sites. The new archaeointensity values were plotted along the existing Indian archaeointensity values derived only from archaeological artefacts, and were compared with the SHA.DIF.14k and ARCH10k.1 global models’ predictions. The present study aims to improve the overall understanding of Indian geomagnetic field variation in the past by providing new high-quality archaeointensity results. However, still more archaeointensity values are required to develop a reliable secular variation curve for India.
Structure of NaFeSiO 4 , NaFeSi 2 O 6 , and NaFeSi 3 O 8 glasses and glass-ceramics
Crystal chemistry of the variscite and metavariscite groups: Crystal structures of synthetic CrAsO 4 ⋅2H 2 O, TlPO 4 ⋅2H 2 O, MnSeO 4 ⋅2H 2 O, CdSeO 4 ⋅2H 2 O and natural bonacinaite, ScAsO 4 ⋅2H 2 O
Kaolinization of 2:1 type clay minerals with different swelling properties
Fire agate from the Deer Creek deposit (Arizona, USA) – new insights into structure and mineralogy
Impregnation of silver in zeolite–chitosan composite: thermal stability and sterility study
Emplacement dynamics of syn-collapse ring dikes: An example from the Altenberg-Teplice caldera, Bohemian Massif
Analytical Techniques for Probing Small-Scale Layers that Preserve Information on Gas–Solid Interactions
Dehydrogenation and dehydroxylation as drivers of the thermal decomposition of Fe-chlorites
Characterization of clays and the technology of Roman ceramics production
Kalistrontite, its occurrence, structure, genesis, and significance for the evolution of potash deposits in North Yorkshire, U.K.
Catching “butterflies” in the morning: A new methodology for rapid detection of aerially deployed plastic land mines from UAVs
Mineral changes quantify frictional heating during a large low-friction landslide
The relevance of dawsonite precipitation in CO 2 sequestration in the Mihályi-Répcelak area, NW Hungary
Abstract: A natural CO 2 reservoir system with a sandstone lithology in NW Hungary has been studied due to its similarities to a large saline reservoir formation that is widespread in the the Pannonian Basin (Central Europe) and is suggested to be one of the best candidates for industrial CO 2 storage. A range of analytical techniques has been used on core samples from CO 2 -containing sandstone layers that represent a wide range of pressures (90–155 bar), temperatures (79–95°C) and pore fluid compositions (total dissolved solids between 18 000 and 50 700 mg l −1 ) to identify the mineralogy and textural characteristics of the natural reservoir. The only clear CO 2 -related feature in the studied lithology was the occurrence of dawsonite (NaAlCO 3 (OH) 2 ) in a close textural relationship with albite. This is in clear agreement with our geochemical modelling results, which also underline the presence of albite as a precondition for the crystallization of dawsonite at the given P – T – X conditions. Our results suggest that, at least in the Pannonian Basin, dawsonite may be an important mineral for the safe sequestration of industrial CO 2 in the subsurface.