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Resultats globals: 6 registres trobats en 0.02 segons.
Articles, 6 registres trobats
Articles 6 registres trobats  
1.
11 p, 451.8 KB Extraction of diagenetic and detrital ages and of the 40Kdetrital/40Kdiagenetic ratio from K-Ar dates of clay fractions / Szczebra, Marek (Polskiej Akademii Nauk. Institute of Geological Sciences) ; Środoń, Jan (Polskiej Akademii Nauk. Institute of Geological Sciences)
Illite age analysis (IAA) is a classical method for extracting diagenetic and detrital ages from mixed ages measured by K-Ar. This approach is based on measuring the masses of diagenetic and detrital illitic components in a few different grain-size fractions of one rock sample and measuring the mixed ages of these fractions. [...]
2009 - 10.1346/CCMN.2009.0570109
Clays and Clay Minerals, Vol. 57, Núm. 1 (2009) , p. 93-103  
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2.
12 p, 1.2 MB Diagenetic reorientation of phyllosilicate minerals in Paleogene mudstones of the Podhale Basin, southern Poland / Day-Stirrat, Ruarri J. (Newcastle University. School of Civil Engineering and Geosciences) ; Aplin, Andrew C. (Newcastle University. School of Civil Engineering and Geosciences) ; Środoń, Jan (Polish Academy of Sciences. Institute of Geological Sciences) ; van der Pluum, Ben A. (University of Michigan. Department of Geological Sciences)
We used high-resolution X-ray texture goniometry to quantify changes in the mm-scale orientation of phyllosilicate minerals in a suite of Paleogene mudstones from the Podhale Basin in southern Poland. [...]
2008 - 10.1346/CCMN.2008.0560109
Clays and Clay Minerals, Vol. 56, Núm. 1 (2008) , p. 100-111  
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3.
23 p, 1.4 MB The charge of component layers of illite-smectite in bentonites and the nature of end-member illite / Środoń, Jan (Institute of Geological Sciences PAN) ; Zeelmaekers, Edwin (University of Leuven. Laboratory for Applied Geology and Mineralogy) ; Derkowski, Arkadiusz (Institute of Geological Sciences PAN)
The nature of component layers of mixed-layer illite-smectite and their possible evolution in the course of illitization have been debated since the 1960s. The present study is a new attempt to solve these problems, using samples collected from diverse geological formations around the world. [...]
2009 - 10.1346/CCMN.2009.0570511
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 649-671  
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4.
20 p, 288.5 KB Surface area and layer charge of smectite from CEC and EGME/H2O-retention measurements / Środoń, Jan (Institute of Geological Sciences PAN) ; McCarty, Douglas K. (Chevron ETC)
The total specific surface area (TSSA) and smectitic layer charge (Q) calculated from the structural formulae and unit-cell dimensions of 12 pure smectite samples were used as a reference in the design and evaluation of TSSA and Q measurement techniques based on cation exchange capacity (CEC), HO retention at 47% RH, and ethylene glycol monoethyl ether (EGME) retention. [...]
2008 - 10.1346/CCMN.2008.0560203
Clays and Clay Minerals, Vol. 56, Núm. 2 (2008) , p. 155-174  
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5.
24 p, 2.2 MB Partial dissolution of glauconitic samples : Implications for the methodology of K-Ar and Rb-Sr dating / Derkowski, Arkadiusz (Polish Academy of Sciences. Institute of Geological Sciences) ; Środoń, Jan (Polish Academy of Sciences. Institute of Geological Sciences) ; Franus, Wojciech (Lublin University of Technology. Department of Geotechnics) ; Uhlík, Peter (Comenius University. Department of Geology of Mineral Deposits) ; Banaś, Michal (Polish Academy of Sciences. Institute of Geological Sciences) ; Zieliński, Grzegorz (Polish Academy of Sciences. Institute of Geological Sciences) ; Čaplovičová, Maria (Comenius University. Department of Geology of Mineral Deposits) ; Franus, Malgorzata (Lublin University of Technology. Department of Geotechnics)
The K-Ar dating of glauconite has been used as an important stratigraphic tool for many decades. The application of this technique is limited to pure glauconites, free of detrital contamination by K-bearing phases, often not easy to detect. [...]
2009 - 10.1346/CCMN.2009.0570503
Clays and Clay Minerals, Vol. 57, Núm. 5 (2009) , p. 531-554  
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6.
14 p, 1.0 MB Evolution of boron and nitrogen content during illitization of bentonites / Środoń, Jan (Institute of Geological Sciences PAN)
The incorporation of boron (B) and nitrogen (N) into illite is the key demand-side process responsible for the diagenetic budget of these elements in sedimentary basins, with important implications for pore water chemistry, natural gas composition, and borehole geophysics. [...]
2010 - 10.1346/CCMN.2010.0580602
Clays and Clay Minerals, Vol. 58, Núm. 6 (2010) , p. 743-756  
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1 Środoń, J.
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