Results 81 to 90 of about 79,104 (288)

Geochemical modeling in the evaluation of ore-forming potential of magmatic-hydrothermal systems

Қарағанды университетінің хабаршысы. Физика сериясы, 2017
Quantitative geochemical modeling possibilities of ore-bearing aqueous fluids separation process from a magmatic melt are considered. Suggested procedures allow calculation of fluid/melt distribution coefficient values for trace elements, their contents
S.E. Shnyukov, I.I. Lazareva, V.S. Portnov, A.G. Aleksieienko, L.I. Gavryliv, D.K. Makat, A.G. Maratova   +6 more
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Predicted Chemical Speciation Distribution of Uranium and Other Elements in Leaching Solution From Specific Uranium Deposit by Using CHEMSPEC Software

He huaxue yu fangshe huaxue
During the in-situ leaching process of uranium, both the chemical composition of the leaching solution and the in-situ hydrogeochemical conditions can affect the chemical speciation of uranium. The chemical speciation of uranium significantly impacts its
Ya-wen CHEN, Wan-qiang ZHOU, Zheng-bang LIU, Ning GUO, Yu-qing NIU, Xiang-yun WANG, Hai-cheng WENG, Chun-li LIU   +7 more
doaj   +1 more source

Early deglaciation history of the southeastern Baffin Island shelf (Eastern Canadian Arctic Archipelago)

Journal of Quaternary Science, EarlyView.
ABSTRACT During the last glacial period, the Laurentide Ice Sheet (LIS) was the largest terrestrial ice sheet on Earth. Its evolution since the Last Glacial Maximum profoundly influenced Earth's geodynamics and surface processes. Investigating the past dynamics of the LIS provides critical insights into how contemporary ice sheets may respond to ...
Alexis P. Belko, Alexandre Normandeau, Patrick Lajeunesse, Audrey Limoges   +3 more
wiley   +1 more source

Geochemical modeling of magmatic gas scrubbing

Annals of Geophysics, 2005
The EQ3/6 software package, version 7.2 was successfully used to model scrubbing of magmatic gas by pure water at 0.1 MPa, in the liquid and liquid-plus-gas regions.
B. Gambardella, L. Marini
doaj   +1 more source

Geochemical support for a climbing habit within the Paleozoic seed fern genus Medullosa [PDF]

, 2011
A long-standing problem in paleobotany is the accurate identification of the growth habits and statures of fossil plants. Tissue-specific analysis of stable carbon isotope ratios in plant fossils can provide an independent perspective on this issue ...
Fischer, Woodward W., Wilson, Jonathan P.   +1 more
core   +2 more sources

Late Quaternary climatic variability in the Eastern Mediterranean recorded in Hermes Cave, Corinth Rift, Greece

Journal of Quaternary Science, EarlyView.
ABSTRACT The Greek peninsula lies at the intersection of major atmospheric circulation systems, making it a key location for reconstructing past climate variability in the Eastern Mediterranean. In this study, we present a new high‐resolution multi‐proxy speleothem record from Hermes Cave, located on the shoulder of the Corinth Rift in southern Greece.
Ch. Pennos, S. Pechlivanidou, S. Modestou, A. Persoiu, S.F.M. Breitenbach, U. Ninnemann, R.L. Gawthorpe, J. Maccali, S‐E. Lauritzen, R.Ø. Skoglund, Th. Thuesen   +10 more
wiley   +1 more source

Effect of Re-impacting Debris on the Solidification of the Lunar Magma Ocean

, 2018
Anorthosites that comprise the bulk of the lunar crust are believed to have formed during solidification of a Lunar Magma Ocean (LMO) in which these rocks would have floated to the surface.
Abe, Alibert, Andrews-Hanna, Asphaug, Bandermann, Barnes, Barr, Borg, Borg, Borg, Bottinga, Boyce, Boyce, Boyet, Breuer, Cameron, Canup, Canup, Chambers, Chen, Cox, Cuk, Cuk, Daly, Dohnanyi, Elkins-Tanton, Elkins-Tanton, Elkins-Tanton, Eppelbaum, Gaffney, Gast, Hartmann, Ida, Jackson, Jackson, Kato, Kaula, Kirk, Kokubo, Kokubo, Konrad, Leinhardt, Lin, Lin, Longhi, Longhi, Luhmann, Marcus, Mastrobuono-Battisti, Matson, Matsuyama, McCubbin, McLeod, Melosh, Merk, Meyer, Minear, Monteux, Nemchin, Neumann, Niemela, Nyquist, Nyquist, O'Hara, O'Neill, Ogawa, Pahlevan, Pepin, Philpotts, Piskorz, Pritchard, Rankenburg, Ransford, Rathbun, Repetto, Reufer, Riner, Rolf, Rufu, Ryder, Saal, Salmon, Senshu, Sharp, Shirley, Snyder, Solomon, Solomon, Solomon, Spera, Spicuzza, Squyres, Takeda, Tanaka, Taylor, Taylor, Taylor, Taylor, Tian, Touboul, Touboul, Touma, Touma, Turcotte, Vander Kaaden, Wakita, Walker, Walker, Warner, Warren, Warren, Wieczorek, Williams, Wolf, Wood, Wood, Wyatt, Yamamoto, Yamamoto, Zhang, Zhang   +120 more
core   +1 more source

A new, ~4500‐year varve record and high‐resolution tephrochronology from lake Hämälänlampi, eastern Finland, provides age constraints for the Furnas C and the Glen Garry/Askja A‐2000 eruptions

Journal of Quaternary Science, EarlyView.
ABSTRACT The northern European distal cryptotephra framework is constantly developing both in terms of identification of new tephra horizons and improved age constraints for the already well‐established tephra marker horizons. However, many prehistoric tephra layers have only been dated by the radiocarbon method, with its inherent problems.
Maarit Kalliokoski, Veera Erola, Saija Saarni   +2 more
wiley   +1 more source

Evolution of the Source Mineralogy and Lithospheric Controls on Magmatism During the Northeast Atlantic Continental Breakup

Geochemistry, Geophysics, Geosystems
The mid‐Norwegian Margin, part of the North Atlantic Igneous Province (NAIP), is a well‐studied volcanic rifted margin formed during the breakup between Greenland and Eurasia ∼56 Ma, with the largest accumulation of magmatic material hosted by the Vøring
Emily H. Cunningham, Sarah Lambart, Pengyuan Guo, Sayantani Chatterjee, Christian Tegner, Autumn Hartley, Ashley M. Morris, Sverre Planke, Christian Berndt, Carlos A. Alvarez Zarikian, Peter Betlem, Henk Brinkhuis, Marialena Christopoulou, Eric C. Ferré, Irina Y. Filina, Joost Frieling, Dustin T. Harper, Morgan T. Jones, Jack Longman, John M. Millett, Geoffroy T. F. Mohn, Reed P. Scherer, Natalia Varela, Weimu Xu, Stacy L. Yager   +24 more
doaj   +1 more source

The Role of Geochemical Modeling in Predicting Quality Evolution of Acid Mine Drainage [PDF]

Acta Montanistica Slovaca, 2004
In recent years the massive reduction of raw materials production brings a wide scale of problems. Among the most frequent exposes of mining activities belong besides old spoil heaps and sludge lagoons, also the drainage of acidic and highly mineralized ...
Andrea Šlesárová
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