Occurrence of Arsenic in Nearshore Aquifers Adjacent to Large Inland Lakes

2021 ◽  
Author(s):  
Sabina Rakhimbekova ◽  
Denis M. O’Carroll ◽  
Clare E. Robinson
Keyword(s):  
Inland Lakes

scholarly journals Microbial nitrification and acidification of lacustrine sediments deduced from the nature of a sedimentary kaolin deposit in central Japan

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tetsuichi Takagi ◽  
Ki-Cheol Shin ◽  
Mayumi Jige ◽  
Mihoko Hoshino ◽  
Katsuhiro Tsukimura
Keyword(s):  
Nitric Acid ◽  
Lacustrine Sediments ◽  
Kaolin Clay ◽  
Central Japan ◽  
Inland Lakes ◽  
Fe Oxidation ◽  
Stable Isotopic ◽  
Fe Hydroxide ◽  
Kaolin Deposit ◽  
Dilute Nitric Acid

AbstractKaolin deposits in the Seto-Tono district, central Japan, were formed by intense kaolinization of lacustrine arkose sediments deposited in small and shallow inland lakes in the late Miocene. Based on mineralogical and stable isotopic (Fe, C, N) studies of Motoyama kaolin deposit in the Seto area, we concluded that it was formed by microbial nitrification and acidification of lacustrine sediments underneath an inland lake. Small amounts of Fe–Ti oxides and Fe-hydroxide in the kaolin clay indicated that iron was oxidized and leached during the kaolinization. The field occurrences indicate that leached ferric iron precipitated on the bottom of the kaolin deposit as limonite crusts, and their significantly fractionated Fe isotope compositions suggest the involvement of microbial activity. The C/N ratios of most of the kaolin clay are distinctly higher than those of modern lacustrine sediment. Although, the possibility of a low-temperature hydrothermal origin of the kaolin deposit cannot be completely ruled out, it is more likely that acidification by dilute nitric acid formed from plant-derived ammonia could have caused the kaolinization, Fe oxidation and leaching. The nitrate-dependent microbial Fe oxidation is consistent with dilute nitric acid being the predominant oxidant.

Particulate and Dissolved Organic Matter in Inland Lakes

1934 ◽  
Vol 4 (4) ◽  
pp. 440-474 ◽  
Author(s):  
E. A. Birge ◽  
C. Juday
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Inland Lakes

Development of a mobile phone application for the prediction of harmful algal blooms in inland lakes

2016 ◽  
Vol 188 (1) ◽  
pp. 1-17 ◽  
Author(s):  
J.P. Gotthold ◽  
A. Deshmukh ◽  
V. Nighojkar ◽  
J. Skalbeck ◽  
D. Riley ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Mobile Phone Application ◽  
Inland Lakes

Comparison of the Calculated and Measured Wave Heights in Inland Lakes

2016 ◽  
Vol 320 ◽  
pp. 814-828
Author(s):  
Hong-sheng Zhang ◽  
En-xian Zhou ◽  
Su Dai ◽  
Yi Zhang
Keyword(s):  
Inland Lakes ◽  
Wave Heights

scholarly journals I.—Remarks upon the Relations and Grouping of the Permian and Triassic Rocks

1874 ◽  
Vol 1 (9) ◽  
pp. 385-390 ◽  
Author(s):  
Horace B. Woodward
Keyword(s):  
Great Britain ◽  
Inland Lakes ◽  
History Of

The physical history of the Permian and Triassic rocks of Great Britain has been told by Professor Ramsay, who has pointed out that the beds were deposited in great inland lakes, for the most part salt. Without entering into the consideration of this subject, there seems to be much that requires to be unravelled in regard to the structure of the beds individually, and much that has yet to be explained in regard to the relations and grouping of the rocks.

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