Results 181 to 190 of about 824,380 (294)

Geochemical and machine learning approaches to groundwater fluoride prediction in Karaga District, Northern Ghana. [PDF]

Sci Rep
Sunkari ED, Abdul-Wahab D, Gutiérrez M, Chakrabarti P, Ambushe AA.   +4 more
europepmc   +1 more source

In Situ Detection of Opal‐A in Jezero Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract We report the in situ detection of amorphous hydrated silica in the Bills Bay abrasion patch, located in the eastern portion of the Margin Unit between the rim of Jezero crater and the western delta. Here, hydrated silica co‐occurs with olivine, Fe‐Mg carbonates, secondary Fe‐Mg silicates, and hydrated Mg‐sulfate as determined by UV Raman ...
Sergei V. Bykov, Kenneth H. Williford, Anushree Srivastava, Andrew Steele, Linda C. Kah, Travis A. Olds, Sunanda Sharma, Richard V. Morris, Kimberly Poppy Sinclair, Ryan S. Jakubek, Nikole C. Haney, Francis M. McCubbin, Mariek E. Schmidt, Ashley E. Murphy, Sandra Siljeström, Eva L. Scheller, William Abbey, Sanford A. Asher, Kevin P. Hand, Kyle Uckert, Jeffrey T. Osterhout, Carina Lee, Rohit Bhartia, Michelle E. Minitti, Joanna V. Clark, Patrick Casbeer, Shiv K. Sharma   +26 more
wiley   +1 more source

Synergistic Effects of a Microbial Amendment and Crushed Basalt: Soil Geochemical and Microbial Responses. [PDF]

Glob Chang Biol
Yang YY, Bueno de Mesquita CP, Lawrence CR, Weyman PD, Dores D, Timmermann T, Fierer N, Fuenzalida-Meriz GA.   +7 more
europepmc   +1 more source

Evidence for a Variable Silicate Weathering Feedback [PDF]

Goldschmidt Abstracts, 2020
Daniel Ibarra, Kimberly Lau, Jeremy Caves Rugenstein   +2 more
openaire   +1 more source

Modeling the Delivery of Mercury's Polar Ice by a Volatile‐Rich Impact

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Permanently shadowed regions near Mercury's poles are thought to harbor significant deposits of water ice, the origin of which remains to be conclusively determined. One leading hypothesis is that most of the water observed today may have been delivered by a relatively recent, volatile‐rich impact comparable in scale and age to that which ...
Parvathy Prem, Nancy L. Chabot, Carolyn M. Ernst, Dana M. Hurley, David B. Goldstein, Jordan K. Steckloff   +5 more
wiley   +1 more source

Phanerozoic seawater Mg/Ca variations driven by supercontinent cycles. [PDF]

Nat Commun
Zhang P, Kendrick MA, Han Y, Ma L, Huang KJ.   +4 more
europepmc   +1 more source

Phytoplankton and Temperature Control Seasonal Dynamics of Greenhouse Gases in a Large River

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Rivers are a dynamic source of greenhouse gases (GHGs), yet the temporal variability and controlling mechanisms of their CO2:CH4:N2O ratios remain poorly constrained. We monitored the three GHGs in the German river Elbe over 5 years at two sites to identify seasonal controls as well as travel time related and site‐specific mechanisms driving ...
Matthias Koschorreck, Claudia Schütze, Uta Ködel, Ingeborg Bussmann, Norbert Kamjunke   +4 more
wiley   +1 more source

Eccentricity rhythms in the Oligocene-Miocene carbon cycle regulated by weathering and carbonate burial. [PDF]

Sci Adv
Liu F, Huang E, Du J, Ma W, Liu Z, Lourens LJ, Tian J.   +6 more
europepmc   +1 more source

Cenozoic Time Constraints on the Evolution of a Gleysol‐Ferralsol‐Podzol Toposequence, Northwest Amazon Basin, Brazil

European Journal of Soil Science, Volume 77, Issue 3, May–June 2026.
ABSTRACT Deciphering the time milestones of clay formation is crucial for modeling the evolution of major geological systems near the Earth's surface. In the present study, kaolinite samples collected along four vertical profiles within a Gleysol‐Ferralsol‐Podzol soil toposequence near São Gabriel da Cachoeira, NW Amazon Basin (Brazil) are dated using ...
Célia Regina Montes, Thierry Allard, Madeleine Sélo, Yves Lucas, Chloé Fourdrin, Öykü Ataytür, Débora Ayumi Ishida, Etienne Balan, Adolpho José Melfi   +8 more
wiley   +1 more source

Forest recovery after deforestation is fueled by mineral weathering at the expense of ecosystem buffering capacity. [PDF]

Proc Natl Acad Sci U S A
Bernhardt ES, Rosi EJ, Solomon CT, Campbell J, Driscoll CT, Green MB, Likens GE, McDowell WH.   +7 more
europepmc   +1 more source