STRUCTURE OF THE DISCHARGE SITE OF STEAM HYDROTHERMAL FLUIDS IN THE AREA OF THE UPPER PAUZHETKA THERMAL FIELD (southern Kamchatka)

2019 ◽  
Vol 98 ◽  
pp. 08011
Author(s):  
Alexandra Khakhina ◽  
Victor Kurnosov ◽  
Yurii Konovalov ◽  
Valeriya Churkina ◽  
Konstantin Galin

In sediments from Holes DSDP 858B, D, F, located near the active hot vent on the thermal field “Dead Dog” in the northern part of the Juan de Fuca Ridge, Middle Valley, a redistribution of chemical elements occurs as a result of solution-rock interaction. During this process, the increase/decrease of their content in hydrothermally altered sediments inversely reflects the decrease/increase of their content in the solution. Nonregular distribution of microelements and REE’s in hydrothermally altered sediments, like a layer pie, reflects the participation of both ascending hydrothermal fluids and lateral flows of hydrothermal solutions in alteration of chemical composition of sediments.


1989 ◽  
Vol 50 (C8) ◽  
pp. C8-9-C8-14
Author(s):  
H. J. KREUSER ◽  
L. C. WANG

Author(s):  
J. P. Lejannou ◽  
M. Cadre ◽  
A. Latrobe ◽  
A. Viault

2002 ◽  
Vol 67 (11) ◽  
pp. 1596-1608 ◽  
Author(s):  
Josef Janča

The effect of miniaturization of the separation channel on the performance of thermal field-flow fractionation (TFFF) is substantiated theoretically. The experiments carried out under carefully chosen experimental conditions proved the high performance of the separation of polymers within an extended range of molar masses from relatively low up to ultrahigh-molar-mass (UHMM) samples. The new micro-TFFF allows to achieve high resolution when applying constant field force operation, it makes easy the programming of the temperature drop which is an advantageous operational mode from the point of view of the time of analysis, and it extends considerably the range of perfectly controlled temperature of the cold wall due to a substantial decrease in the heat energy flux compared with standard size channels.


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