Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26296080%3A_____%2F20%3AN0000124" target="_blank" >RIV/26296080:_____/20:N0000124 - isvavai.cz</a>
Result on the web
<a href="http://www.muni.cz" target="_blank" >http://www.muni.cz</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s12665-020-08926-3" target="_blank" >10.1007/s12665-020-08926-3</a>

Result language
angličtina
Original language name
Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island
Original language description
The intensity of chemical weathering of volcanic rock particles in the sediments was expressed by the Chemical Index of Alteration (CIA), which reflects alteration of feldspars and formation of clay minerals. The observed mineral assemblage of montmorillonite, illite, and kaolinite probably originated from alteration of volcanic glass and from alteration of feldspars to clay minerals. CIA weathering rates from the lacustrine sediments are similar to those of Early Jurrasic high-Ti volcanic rocks of the Mount Poster Formation and Middle Jurrasic high-Ti volcanic rocks of the Mapple Formation from the Antarctic Peninsula. However, the sediments show a good fit in OIB-normalized incompatible trace-element patterns only with the high-Ti volcanic rocks from the Middle Jurassic rhyolites of the Mapple Formation, while the fit with Cenozoic basalts of the James Ross Island Volcanic Group is poorer. Rocks from the Antarctic Peninsula were probably transported through the Prince Gustav channel by small glaciers during the Neogene and Quaternary.
Czech name
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Czech description
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Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
40500 - Other agricultural sciences

Project
<a href="/en/project/QK1810233" target="_blank" >QK1810233: Quantification of the impact of farming management on soil erosion, soil quality and yields of crops with proposals of the environmentally friendly cultivation technologies.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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