Results 121 to 130 of about 5,732,959 (308)

Geochemical Characteristics and MetallogenicAge of the Maoping Graphite Deposit in the Panxi Area, Southern Sichuan

Kuangchan zonghe liyong
This is an article in the field of earth sciences. The newly discovered Maoping graphite deposit is a super-large crystalline graphite deposit that is located in the middle-northern section of the Kang-Dian fault-uplift belt on the western margin of the ...
Zhicheng LIU, Mengtian ZHENG, Yuheng GUO, Wei DUAN, Yong ZHOU, Bo LIU, Wenchun TANG   +6 more
doaj   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

Geochemical characteristics of the rivers of the Elton region

Water Sector of Russia: PROBLEMS, TECHNOLOGIES, MANAGEMENT
The study of the chemical composition of natural waters used for balneological purposes is a very important task. In addition, this indicator determines the living conditions of living organisms, ensuring the sustainability of ecological systems, which is especially important when considering the problems of small rivers.
Yuliya A Zimina, Tatyana A Shipaeva, Aleksey S Venetsianskiy, Galina A Sroslova, Olga V Zorkina   +4 more
openaire   +2 more sources

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

Geochemical Evidence for Weathering in Northwestern European Loess on a Sub-millenial Scale During the Last Ice Age [PDF]

This study seeks to determine the extent to which chemostratigraphy can supplement other stratigraphic tools in determining the effects of climate change in loess-palaeosol sequences.
Hill, Terence Charles
core   +2 more sources

First finding of Icelandic tephra in Czechia: Vedde Ash identified in palaeolake sediments of Stará Jímka

Journal of Quaternary Science, EarlyView.
ABSTRACT In this study, we report the first documented occurrence of the Icelandic Vedde Ash (VA) in the Bohemian Forest, identified within palaeolake sediments from Stará Jímka, Czechia, representing the first Icelandic tephra layer identified in Czechia.
Verena Meier, Simon A. Larsson, Martin Racek, Daniel Vondrák   +3 more
wiley   +1 more source

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

Journal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen, Zenobia Jacobs, Caitlyn Scobie, Sam Marx, William Reynolds, Matthew S. Forbes, Haidee Cadd, Xue Rui, Laura Mogensen, Alexandru Codilean, Réka H. Fülöp, Klaus M. Wilcken, Fabian Boesl, Alex F. Wall, Nicola Stromsoe   +14 more
wiley   +1 more source

Climate‐modulated accumulation and erosion of sediments in the Rodderberg crater basin for the last 439 ka (East Eifel Volcanic Field, Germany)

Journal of Quaternary Science, EarlyView.
ABSTRACT Glacial/interglacial climate cycles since marine isotope stage (MIS) 12 influenced the discontinuous and 73 m‐long sediment record from the volcanic crater of Rodderberg in the East Eifel Volcanic Field, Germany. High‐resolution grain size and geochemical data have been valued by numerical dating techniques (radiocarbon and luminescence dating,
Bernd Zolitschka, Ines Hogrefe, An‐Sheng Lee, Maarit Kalliokoski, Manfred Frechen   +4 more
wiley   +1 more source

Journal of Geochemical Exploration

, 1983
Texto completo. Acesso restrito. p. 349 – 359The nature of geochemical anomalies is discussed on a speculative basis. Anomalies are classified as independent or as additive, depending on their spatial relation to the background population.
Björklund, A.
core   +1 more source

Health risk assessment of heavy metal accumulation in fruits exposed to geothermal waters: a case study and global implications

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND The present study investigated the potential health risks of heavy metals (HMs) in the fruits and leaves of mulberry and sour cherry trees exposed to water from Sivas geothermal basin (Turkey). RESULTS The target HMs were ranked according to their hazard index as: Cd < Pb < Zn < Cu < Ni < Mn < Cr. The total hazard index for mulberry
E Işıl Arslan Topal, Murat Topal, Erdal Çelik, Erdal Öbek   +3 more
wiley   +1 more source