Results 181 to 190 of about 164,938 (266)

Visible to Near‐Infrared Properties of Felsic Rocks: Plagioclase Detection Limits and Applications to Mars Orbital Spectra

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Widespread plagioclase detections on Mars using orbital visible to near infrared (VNIR) reflectance spectra have led to multiple interpretations of “feldspathic” terrain, ranging from ancient crustal material and evolved plutons to volcanic lava flows.
Hunter Vannier, Briony H. N. Horgan, Michael Phillips, Michael Eddy, Rebecca Greenberger, Arya Udry   +5 more
wiley   +1 more source

Nitrate and Fluoride as Complementary Indicators of Groundwater Evolution Along a Flow Path: A SOM-PMF Coupled Approach. [PDF]

Water Environ Res
Yang Y, Liu S, Huang H, Chu X, Ye H, Shi Z.   +5 more
europepmc   +1 more source

Automated Daily Measurements of Soil Pore Space CO2 and O2: Signals Revealing Soil Physical and Biogeochemical Processes

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 9, September 2026.
Abstract There is a need to understand and monitor active soil processes in the field; however, it is challenging to observe and separate co‐occurring belowground processes. High precision monitoring of soil pore space gases is a potentially powerful approach, complicated by the variety of biological and physical processes that impact gas.
Timothy M. Gallagher, Jason Dahlberg, Kyle E. Smart, Nicole Czwakiel, Morgan Mellum, Daniel O. Breecker   +5 more
wiley   +1 more source

Environmental selection shapes the ecological cascade of biofilm assembly and functional gene abundance in sandstone weathering. [PDF]

Biofilm
Jia P, Zhang W, Zhang G, Pei W, Wu F, He Z, Chen T, Liu G.   +7 more
europepmc   +1 more source

Dolomitic Microfossil Preservation in a Cryogenian Microbial Reef, Arkaroola (South Australia)

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Microbial dolostones that now form the Arkaroola reef, northern Adelaide Rift Complex, and were deposited during the Cryogenian interglacial period, display a wide range of meso‐scale stromatolite morphotypes in outcrop. Microcharacterisation involving optical microscopy, combined scanning electron microscopy and energy dispersive spectroscopy
France Champenois, Maree L. Corkeron, Annette D. George   +2 more
wiley   +1 more source

Hydrochemical and isotopic signatures revealing surface-groundwater dynamics: An empirical evidence from the Cherchen River Basin. [PDF]

iScience
Xu Z, Wu B, Liu K, Gao F, He B, Abdul W, Aili A, Han F.   +7 more
europepmc   +1 more source

Red to Green: A Lipid Biomarker Record of Tonian‐Ediacaran Algae in Siberia

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT Multiple lines of evidence point to a major diversification of Eukarya in the late Tonian period, ca. 800–720 Ma ago. Regular steranes, lipid biomarkers primarily sourced from eukaryotes, are first unambiguously reported from multiple sites. Here, we present lipid biomarker stratigraphic records from two drill‐cores from the Lena‐Anabar Basin ...
Adriana I. Rizzo, Andrey Bekker, Anton B. Kuznetsov, Victoria B. Ershova, Yijun Xiong, Karl E. Karlstrom, Simon W. Poulton, Gordon D. Love   +7 more
wiley   +1 more source

Depth of nutrient uptake by deep-rooted plants is regulated by water availability. [PDF]

Proc Natl Acad Sci U S A
Li L, Christensen JN, Bill M, Dong W, Wu Y, Beutler C, Sprenger M, Gulick BW, Bone SE, Faybishenko B, Sanders J, Chou C, Henderson A, Bouskill NJ, Williams KH, Gilbert B.   +15 more
europepmc   +1 more source

Biosignature Preservation in Stromatolites From the Carri Laufquen Lakes System, Patagonia: Implications for Martian Palaeolacustrine Environments

Geobiology, Volume 24, Issue 5, September/October 2026.
ABSTRACT The Carri Laufquen Lakes System is a highly alkaline, basalt‐hosted lacustrine environment in northern Patagonia, Argentina. Diverse morphologies of Late Pleistocene sub‐fossil stromatolites occur along the lakeshores. Using detailed optical and electron microscopy, spectroscopy and organic geochemical analyses, this study shows that ...
Victor Amir Cardoso Dorneles, Maëva Millan, Fernando J. Gómez, Primož Šket, Jens Najorka, Cindy Broderick, Wren Montgomery, Barbara Cavalazzi, Keyron Hickman‐Lewis   +8 more
wiley   +1 more source

Hydrochemical Evolution and Isotopic Identification of Groundwater Contamination in a Typical Abandoned Pyrite Mining Area: A Case Study of the Jinpen Mining Area in Yunxi County. [PDF]

Water Environ Res
Du B, Su H, Shi Y, Zhou P.
europepmc   +1 more source