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%2F67985831%3A_____%2F20%3A00525326" target="_blank" >RIV/67985831:_____/20:00525326 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/20:00115816 RIV/00216305:26110/20:PU136814

Result on the web

<a href="https://link.springer.com/article/10.1007/s12665-020-08926-3" target="_blank" >https://link.springer.com/article/10.1007/s12665-020-08926-3</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

Lacustrine sediments of the Big Lachman Lake (James Ross Island, Antarctica) are dominated by clay- and silt-sized particles of varied petrographic composition. These are of volcanic origin and are derived predominantly from the Mendel Formation. 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_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10505 - Geology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Name of the periodical

Environmental Earth Sciences

ISSN

1866-6280

e-ISSN

—

Volume of the periodical

79

Issue of the periodical within the volume

April

Country of publishing house

DE - GERMANY

Number of pages

18

Pages from-to

186

UT code for WoS article

000527677100002

EID of the result in the Scopus database

2-s2.0-85083288064