Mineralogy and Chemical Composition of Cryosols and Andosols in Antarctica

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F18%3A43911835" target="_blank" >RIV/62156489:43210/18:43911835 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.17221/231/2016-SWR" target="_blank" >http://dx.doi.org/10.17221/231/2016-SWR</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17221/231/2016-SWR" target="_blank" >10.17221/231/2016-SWR</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mineralogy and Chemical Composition of Cryosols and Andosols in Antarctica

Popis výsledku v původním jazyce

The detail mineralogical analysis of soil samples from the islands near the north-eastern extremity of the Antarctic Peninsula was applied to evaluate the presence of chemical along with physical weathering. We assumed the highest degree of chemical weathering to occur at surface horizons (higher temperature and presence of liquid water). The increased amount of potential weathering products, phyllosilicates (mainly montmorillonite and chlorite), microcrystalline polymorphous silica, Fe-oxyhydroxides, and the decreased number of initial parent phases (feldspars, volcanic glass, quartz, olivine) in fraction &lt; 2 mm and in the upper soil horizons confirmed the process of chemical weathering. The dominant amount of montmorillonite in the clay fraction was used to determine the crystal thickness using the BWA technique. Mean thickness of crystal in soil profiles rising towards the surface suggests the effect of chemical weathering. The isotopic evaluation of montmorillonite could provide further proof of chemical weathering in future research. The origin of zeolite mineral - clinoptilolite, in the studied samples present mostly at ca. 10 wt %, has remained undisclosed. Clinoptilolite could be a product of hydrothermal alteration, chemical weathering or both. The question of its origin is also a subject for future research.The distribution of macro elements of the studied soil samples confirms more chemical weathered material in the soil profiles of James Ross Island. It also indicates more intensive or longer weathering on James Ross and King George Islands than on Deception Island.

Název v anglickém jazyce

Mineralogy and Chemical Composition of Cryosols and Andosols in Antarctica

Popis výsledku anglicky

The detail mineralogical analysis of soil samples from the islands near the north-eastern extremity of the Antarctic Peninsula was applied to evaluate the presence of chemical along with physical weathering. We assumed the highest degree of chemical weathering to occur at surface horizons (higher temperature and presence of liquid water). The increased amount of potential weathering products, phyllosilicates (mainly montmorillonite and chlorite), microcrystalline polymorphous silica, Fe-oxyhydroxides, and the decreased number of initial parent phases (feldspars, volcanic glass, quartz, olivine) in fraction &lt; 2 mm and in the upper soil horizons confirmed the process of chemical weathering. The dominant amount of montmorillonite in the clay fraction was used to determine the crystal thickness using the BWA technique. Mean thickness of crystal in soil profiles rising towards the surface suggests the effect of chemical weathering. The isotopic evaluation of montmorillonite could provide further proof of chemical weathering in future research. The origin of zeolite mineral - clinoptilolite, in the studied samples present mostly at ca. 10 wt %, has remained undisclosed. Clinoptilolite could be a product of hydrothermal alteration, chemical weathering or both. The question of its origin is also a subject for future research.The distribution of macro elements of the studied soil samples confirms more chemical weathered material in the soil profiles of James Ross Island. It also indicates more intensive or longer weathering on James Ross and King George Islands than on Deception Island.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

<a href="/cs/project/QJ1210263" target="_blank" >QJ1210263: Agronomická opatření ke snížení vodní eroze na orné půdě s využitím zapravení organické hmoty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Soil and Water Research

ISSN

1801-5395

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

13

Strana od-do

61-73

Kód UT WoS článku

000430186300001

EID výsledku v databázi Scopus

2-s2.0-85045432554