Results 21 to 30 of about 385,438 (342)

Geochemical properties and heavy metal contents of carbonaceous rocks in the Pliocene siliciclastic rock sequence from southeastern Denizli-Turkey

Open Geosciences, 2022
Pliocene-aged carbonaceous rocks of varying thicknesses, alternating with siliciclastic and carbonate rock units, are located on the northern border of the Çameli-Acıpayam basin (in southwestern Turkey), which is filled with thick Neogene sediments ...
Koralay Tamer, Koralay Demet Banu
doaj   +1 more source

Hydrogeochemical Analysis of Phewa Lake: A Lesser Himalayan Lake in the Pokhara Valley, Nepal

Environment and Natural Resources Journal, 2021
Phewa Lake in Nepal is a lake of international importance providing crucial ecological and economic services. However, increased urbanization, population growth and anthropogenic activities have resulted in degradation of the lake.
Udhab Raj Khadka, AL. Ramanathan
doaj   +1 more source

High potential for weathering and climate effects of non-vascular vegetation in the Late Ordovician [PDF]

, 2016
It has been hypothesized that predecessors of today’s bryophytes significantly increased global chemical weathering in the Late Ordovician, thus reducing atmospheric CO2 concentration and contributing to climate cooling and an interval of glaciations ...
A Boucot, A Herrmann, A Ito, A Pohl, AE Bartholomé, B Fletcher, B Weber, C Beer, C Buendía, C Humphreys, C Wellman, C Yapp, C Zambell, D Edwards, D McCarroll, E Raevskaya, E Van Der Heijden, F Hourdin, G Bluth, J Belnap, J Chen, J Gaillardet, J Jauhiainen, J Moncrieff, J Quirk, J Silvola, J Veizer, K Field, K Moulton, K Sharma, L Kump, L Reinhold, M Cochran, M Heijmans, M Sonesson, N Bergman, N Carvalhais, P Amiotte Suchet, P Brady, P Kenrick, P Porada, P Porada, P Strother, PA Suchet, R Aghamiri, R Berner, R Berner, R Berner, R Botting, R Eckstein, R Honegger, R Pavlick, R Stretch, S Arens, T Jackson, T Jackson, T Lenton, W Elbert, W Pitman, X Yuan, Z Tuba   +60 more
core   +3 more sources

Mineralogia de um Argissolo Vermelho-Amarelo da zona úmida costeira do Estado de Pernambuco Mineralogy of an Ultisol in the coastal humid zone of Pernambuco, Brazil

Revista Brasileira de Ciência do Solo, 2008
A mineralogia do solo constitui uma excelente ferramenta para o conhecimento e a avaliação da gênese do solo e do seu comportamento físico e químico, além de ser um dos parâmetros utilizados na distinção de classes do Sistema Brasileiro de Classificação ...
Júlio Guilherme da Costa Lima, Sheila Maria Bretas Bittar Schulze, Mateus Rosas Ribeiro, Sandra de Brito Barreto   +3 more
doaj   +1 more source

Geochemical and petrographic characteristics of sediments along the transboundary (Kenya–Tanzania) Umba River as indicators of provenance and weathering

Open Geosciences, 2021
The Umba River basin is one of the smaller-scale hydrological basins in the East African region. It traverses two countries, with its catchment in the Usambara mountains in Tanzania, while it drains its waters to the Indian Ocean in Vanga, Kenya.
Kimeli Amon, Ocholla Oliver, Okello Judith, Koedam Nico, Westphal Hildegard, Kairo James   +5 more
doaj   +1 more source

Weathering of Chlorite Illite Deposits in the Hyperarid Qaidam Basin: Implications to Post-Depositional Alteration on Martian Clay Minerals

Frontiers in Astronomy and Space Sciences, 2022
Chlorite is the second-most common class of clay minerals on the Martian surface and has been found to coexist with illite in some regions. Although previous studies have paid much attention to the formation of this assemblage, the post-depositional ...
Yu Sun, Yiliang Li, Yiliang Li, Chaoqun Zhang, Xiaorong Qin, Xiaorong Qin, Jianxun Shen, Hongping He, Hongping He, Yongxin Pan, Yongxin Pan   +10 more
doaj   +1 more source

Terrestrial exposure of a fresh Martian meteorite causes rapid changes in hydrogen isotopes and water concentrations [PDF]

, 2018
Determining the hydrogen isotopic compositions and H2O contents of meteorites and their components is important for addressing key cosmochemical questions about the abundance and source(s) of water in planetary bodies.
A Al-Kathiri, A Stephant, AE Saal, AR Sarafian, C Aubaud, C Engrand, CMO’D Alexander, DR Bell, E Hauri, E Pendall, G Boato, HC Aoudjehane, IP Baziotis, JJ Barnes, JL Gooding, JP Greenwood, LA Leshin, LAJ Garvie, LJ Hallis, LJ Hallis, LJ Hallis, LJ Hallis, LL Watson, MR Lee, N Sugiura, NZ Boctor, P Mane, R Tartèse, RD Ash, T Usui, ZD Sharp   +30 more
core   +1 more source

Elemental geochemistry of the Middle Jurassic shales in the northern Qaidam Basin, northwestern China: Constraints for tectonics and paleoclimate

Open Geosciences, 2021
The elemental geochemical characteristics of mudstones/shales are good tracers for indicating the evolution of tectonics, paleoenvironment, and paleoclimate.
Hou Haihai, Liu Shujun, Shao Longyi, Li Yonghong, Zhao Ming’en, Wang Cui   +5 more
doaj   +1 more source

Lithium Isotopic Compositions of Mesozoic and Cenozoic Basalts From South-Eastern China: Implications for Extremely Low δ7Li of Continental-Type Eclogites

Frontiers in Earth Science, 2022
Lithium isotope geochemical studies of oceanic-type eclogites benefited from previous investigation of altered oceanic crust; however, processes of lithium isotope exchange operating on altered protoliths of continental-type eclogites have remained ...
Cheng-Long Yu, Yilin Xiao, Yilin Xiao, Yang-Yang Wang, Olivier Nadeau, He Sun, He Sun, Hong-Qiong Wan, Dong-Yong Li, Xiao-Xia Wang, Dong-Bo Tan   +10 more
doaj   +1 more source

Investigating plywood behaviour in outdoor conditions [PDF]

, 2016
Moisture behaviour of plywood is investigated in combination with detailed structural analysis. In the lab, neutron radiography and X-ray computed tomography (X-ray CT) were used to map the moisture distribution and internal structure of plywood ...
De Windt, Imke, Dhaene, Jelle, Lehmann, E, Li, Wanzhao, Mannes, D, Van Acker, Joris, Van den Bulcke, Jan   +6 more
core   +2 more sources