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@article{1662983,
author = {Vašinka, Martin and Krmíček, Lukáš and Všianský, Dalibor and Hrbáček, Filip and Nývlt, Daniel},
article_location = {New York},
article_number = {8},
doi = {http://dx.doi.org/10.1007/s12665-020-08926-3},
keywords = {lake sediments; trace elements; clay minerals; weathering},
language = {eng},
issn = {1866-6280},
journal = {Environmental Earth Sciences},
note = {Doc. Krmíčka nedávat jako domácího tvůrce (nekmenový zaměstnanec).},
title = {Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island},
url = {https://link.springer.com/article/10.1007/s12665-020-08926-3},
volume = {79},
year = {2020}
}
TY - JOUR
ID - 1662983
AU - Vašinka, Martin - Krmíček, Lukáš - Všianský, Dalibor - Hrbáček, Filip - Nývlt, Daniel
PY - 2020
TI - Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island
JF - Environmental Earth Sciences
VL - 79
IS - 8
SP - 1-18
EP - 1-18
PB - Springer
SN - 18666280
N1 - Doc. Krmíčka nedávat jako domácího tvůrce (nekmenový zaměstnanec).
KW - lake sediments
KW - trace elements
KW - clay minerals
KW - weathering
UR - https://link.springer.com/article/10.1007/s12665-020-08926-3
L2 - https://link.springer.com/article/10.1007/s12665-020-08926-3
N2 - 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.
ER -
VAŠINKA, Martin, Lukáš KRMÍČEK, Dalibor VŠIANSKÝ, Filip HRBÁČEK a Daniel NÝVLT. Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island. \textit{Environmental Earth Sciences}. New York: Springer, 2020, roč.~79, č.~8, s.~1-18. ISSN~1866-6280. Dostupné z: https://dx.doi.org/10.1007/s12665-020-08926-3.
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