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Quantitative Estimation of Carbonate Rock Fraction in Karst Regions Using Field Spectra in 2.0–2.5 μm
2016
Remote Sensing
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This study demonstrates that spectral variation of the surface constituents spectra in 2.270-2.398 µm region can indicate carbonate rock fraction and be used to quantify them. ...
In this study, we examined the spectra of major surface constituents in karst areas for direct evidence of absorption features attributable to carbonate rock fraction. ...
Therefore, it has been used for the development of quantitative models for estimation of carbonate rock fraction in karst mixed surface scenes. ...
doi:10.3390/rs8010068
fatcat:rf6ry7cbmffchkw43g6xldkwlm
Contribution of magnetic resonance soundings for characterizing water storage in the unsaturated zone of karst aquifers
2016
Geophysics
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The remarkable spatial variability of the MRS response observed in the study area makes it possible to determine ranges of water storage properties in relation to the lithology of the investigated carbonate ...
To investigate the hydraulic functioning of the Durzon karst system located on the Larzac plateau (southern France), we used the MRS method at 16 sites. ...
The helpful comments of S. Costabel, J. F. Girard, and one anonymous reviewer greatly improved the manuscript. Thanks also go to H. Guyard, A. Chevalier, V. Hakoun, J. Pourrier, and A. ...
doi:10.1190/geo2015-0411.1
fatcat:id4wi4pjs5e2tjoruonjfjcjqi
Rare Earth Element Phases in Bauxite Residue
2018
Minerals
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REEs are found as discrete mineral particles in bauxite residue. Their sizes range from <1 µm to about 40 µm. ...
Karst bauxite deposits are associated with carbonate rocks, where bauxite bodies fill former karst cavities. ...
Apostolos Kourtis from National Technical University of Athens (NTUA) is thanked for the help with µ-Raman spectroscopy. ...
doi:10.3390/min8020077
fatcat:g3ag23b7czft7cntncny3ciwoe
Geophysical and geomorphological investigations of a Quaternary karstic paleolake and its underground marine connection in Cassis (Bestouan, Cassis, SE France)
2014
Geomorphology
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plain located in a carbonate environment (Cassis, Provence -SE France) was studied using a multi-method approach (electrical resistivity tomography, gravimetric, passive seismic survey), combined with ...
This discovery has implications for the understanding of karst processes. ...
We also acknowledge the altruism of several private landowners who repeatedly let us work in their fields and vineyards, as well as the help of the Cassis municipality. ...
doi:10.1016/j.geomorph.2014.02.021
fatcat:zajcbtvyvzgm5my4g2vz5x3nku
The enigmatic Zerelia twin-lakes (Thessaly, Central Greece): two potential meteorite impact Craters
2013
Solid Earth Discussions
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</strong> Two circular permanent lakes of 150 and 250 m diameter and 6–8 m depth to an unconsolidated muddy bottom occur 250 m apart from each other in the agricultural fields SW of the town of Almiros ...
and deformed glass-shaped fragments, calcite globules in quartz; thus indications of possible carbonate melting, quenching and devitrification. ...
We thank the 13th Ephoret of Prehistoric and Classical Antiquities (Vo-20 los, Greece) for permission of sampling in the neighborhood of the prehistoric site Magoula Zerelia; E. ...
doi:10.5194/sed-5-1511-2013
fatcat:tebbxplqnvcghhl5gb5sooqrpy
Biomarkers as paleoclimate proxies in peatlands in coastal high plains in Asturias, N Spain
2013
International Journal of Coal Geology
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Combustion of pulverized samples (36-80µm) at 2.5, 5 and 10% O 2 in CO 2 has been carried out in a Drop Tube Furnace (DTF) at 1300 ºC. ...
During each measurement four acquisitions of 10s were co-added. Measurement area was 2x2μm. The spectra were deconvoluted with the use of GRAMS 32 software, following the Sadezky's et al. ...
Qualitative improvement of xylite by mechanical preparation ...
doi:10.1016/j.coal.2013.04.006
fatcat:urpchyxyrnaybmfgtrkizqp4ve
Modification and preservation of environmental signals in speleothems
2006
Earth-Science Reviews
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Thanks to Melanie Leng for the opportunity to present on this topic at the ISOPAL2 meeting at Keyworth and for her support in preparation of this paper. ...
Acknowledgements We acknowledge much helpful discussion with a wide range of collaborators and other colleagues, but even so we apologize to the speleothem community for our inevitable biases and omissions ...
50 µm scale differences (of up to 1 o / oo as argued above) in fractionation during deposition. ...
doi:10.1016/j.earscirev.2005.08.003
fatcat:xbk6duonqjcull5dmnbfzyvklu
Geochemistry and Metallogenic Model of Carlin-Type Gold Deposits in Southwest Guizhou Province, China
[chapter]
2012
Geochemistry - Earth's System Processes
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EMPA showed that gold is predominantly in arsenian pyrite (540 ppm Au, 10.73 wt % As: Ye et al., 1994) , but a few gold grains (0.3-0.8 μm) have been observed in arsenian pyrite using scanning electron ...
Source of fluids Oxygen and hydrogen isotope compositions of early barren milky quartz veins and clay minerals (<2 μm) in the mineralized rock from Shuiyindong have been reported by Hofstra et al. (2005 ...
doi:10.5772/31742
fatcat:dhybqefpvjf3rmfrjljt4uo6gu
10th Applied Isotope Geochemistry Conference
2013
Central European Geology
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Sediment and rock samples taken from a research site in New South Wales, Australia were first equilibrated in a fixed volume of dehumidified air and then directly sampled by the LGR mass spectrometer. ...
of monitoring bores, etc.) and analysis therefore presents great potential for field deployment, enabling hydrogeological profiling without the need to remove drill core samples from site. ...
AIG10 -2013 Estimates of apparent recoveries were different from the real ones and therefore inadequate for cotton and cowpea. ...
doi:10.1556/ceugeol.56.2013.2-3.1
fatcat:kgsdeqp5mjglpbgr6eju5j2rii
A bacterial bioreporter panel to assay the cytotoxicity of atmospheric particulate matter
2012
Atmospheric Environment
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Size-resolved aerosol measurements including collection of submicron (Dp < 1.0 μm), fine (Dp < 2.5 μm), and coarse (2.5 < Dp < 10 μm) particles were conducted for the determination of their mass extinction ...
In the present study, we analyzed the surface concentration of PM10 (Particulate Matter with a diameter of less than 10 μm) and other physically linked variables over Southeastern China under calm weather ...
and coarse (2.5-10 µm) size fractions. ...
doi:10.1016/j.atmosenv.2012.09.048
fatcat:io4k5yahovcgvgzpnrxd6mynym
14 C-free Carbon is a Major Contributor to Cellular Biomass in Geochemically Distinct Groundwater of Shallow Sedimentary Bedrock Aquifers
2019
Water Resources Research
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Here, we compare stable and radiogenic carbon isotope compositions of microbial phospholipid fatty acids (PLFAs) with those of in situ potential microbial C sources to assess the major C sources for subsurface ...
In this zone, Δ 14 C values of dissolved inorganic carbon (−366 ± 18‰) and 11MeC16:0 (−283 ± 32‰), an important component in autotrophic nitrite oxidizers, were similar enough to indicate that autotrophy ...
VS and ST acknowledge further support from the European Research Council (ERC) Advanced Grant 695101 14Constraint Field work permits were issued by the responsible state environmental offices of Thüringen ...
doi:10.1029/2017wr022067
fatcat:shqiik57ibfwtkx3zr27o326gy
The maximum amount of rotational energy transfer in F2-He system and hard ellipsoid potential model
2012
IOSR Journal of Applied Physics
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Therefore the ratio µ/ µ m should be smaller than 5 for the inequality in Eq. (10) to hold. In other cases all the transitions permitted by the energy conservation constraint would be possible. ...
to dry tapioca in the Niger Delta region of Nigeria. ...
Acknowledgement One of us (Shivali Verma)is grateful to MPCST for financial support through JRF. ...
doi:10.9790/4861-0250105
fatcat:skrhltkotja4lmkbbma7ewz22i
Goldschmidt 2012 Conference Abstracts
2013
Mineralogical magazine
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We studied the δ 34 S values of DMS in surface ocean water in order to constrain estimates of the marine DMS flux to the atmosphere. ...
These are the first direct S-isotopic measurements of DMS in seawater using a new method for the analysis of δ 34 S in individual compounds at trace amounts (picograms). ...
Acknowledgements The work was financed by Polish Ministry of Science and Higher Education grant no. NN307051237. ...
doi:10.1180/s0026461x00006149
fatcat:6kseb7xg7fcoxdjbv5h45kgfga
EUCOP4 Book of Abstracts
[article]
2014
Zenodo
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EUCOP4, the 4th European Conference on Permafrost and Regional Conference of the International Permafrost Association is hosted by the Portuguese Universities of Lisbon and Évora and is to be held in Évora ...
The high quality of the scientific program is to be thanked to the authors and also to the chairs of the 23 thematic sessions, that made a fantastic work in their promotion and also in conducting all reviewing ...
Rock damage and regolith transport by frost: an example of climate modulation of the geomorphology of the critical zone. Earth Surface Processes and Landforms. ...
doi:10.5281/zenodo.5532540
fatcat:ucwuntienvh7bogt77s52im7mq
Proceedings and abstracts of the 6th International Symposium on Mineralogy - Cluj-Napoca ─ Romania, September 18-21, 2003
2003
Studia Universitatis Babes-Bolyai: Geologia
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Săndulescu, M., (1984). Geotectonics of Romania (in Romanian). Edit. Tehn., 336 p., Bucureşti. ...
This study has shown that the metamorphism, which affected the rocks of the Vranjska Banja Series, had similar intensity in the whole area. ...
µm wide and 10 µm long. ...
doi:10.5038/1937-8602.48.3.1
fatcat:vlk6skc7i5hl7nn7sferyhmqoy
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