Environmental Geochemistry Issues Semi-Monthly

Mount Melbourne (Antarctica) , Paola DEL CARLO ,  CC BY-SA 3.0 ; EGU Imageo Geochemical clustering reveals cryptic eruptions and tephra correlations from Antarctic fumarolic ice-cave archives   (DEL CARLO et al. , 2026) https://www.nature.com/articles/s43247-026-04105-7 (DEL CARLO et al ., 2026)

(FERRER et al. , 2026) Underwater Oxygen Loss Threatens Earth's Stability, Researchers Warn (Brittany HOOK, UCSD Scripps ; July 16, 2026) https://scripps.ucsd.edu/news/underwater-oxygen-loss-threatens-earths-stability-researchers-warn Featured Research Article: Abundant interactions and feedbacks between aquatic deoxygenation and the other planetary boundaries suggest "unsafe" levels of oxygen loss with far reaching impacts (FERRER et al. , 2026) https://aslopubs.onlinelibrary.wiley.com/doi/10.1002/lno.70434

Map of Chongqing, China , 枫…秋絮 ; CC BY-SA 3.0 , Link Heavy Metals in mining and agricultural ecotone:  vertical distribution, ecological risks and health implications (ZHANG et al. , 2026) https://www.nature.com/articles/s41598-026-58692-8 Note :  Article in press! Also... Trace metal pollution and ecological effects on five crops around a typical Manganese mining area in Chongqing, China (ZHANG et al., 2026) https://www.nature.com/articles/s41598-026-37535-6

TRIPATHI et al ., 2025 .                     Geochemistry and Genesis of Fe-Mn deposits, West Sewell Ridge, Andaman Sea (VARGHESE et al. , 2026) https://www.academia.edu/resource/work/167543382 Also... Geochemistry of volcanic rocks of the Andaman Sea:  Insights into the nature of back-arc crust (TRIPATHI et al. , 2025) https://www.sciencedirect.com/science/article/pii/S0024493724003840?casa_token=hnIYTLhn_ccAAAAA:lpH3T_Uiwwn2ndH9Ko7HRdR77khaXededPtI81WtDegohQ3fzrUtlBZpYBcdPcXwOzkKY16yLQ Megafauna Community Structure of Andaman Seamounts including the Back-Arc Basin -- A Quantitative Exploration of the Indian Ocean (SAUTYA et al ., 2011) https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0016162&type=printable

Update :   Feds Grant Final Approval for Arizona Mine Situated in Critical Habitat for Jaquars and Mexican Spotted Owls [Wyatt MYSKOW, Inside Climate News ( ICN ) ; July 8, 2026] https://insideclimatenews.org/news/08072026/forest-service-approves-arizona-south32-hermosa-mine/ Nation's First Critical Minerals Mine Nears Approval in Biodiversity Hotspot [Wyatt MYSKOW, Inside Climate News ( ICN ) ; March 15, 2026] https://insideclimatenews.org/news/15032026/arizona-south32-hermosa-critical-minerals-mine/ Public Notice : State 401 Water Quality Certification Waiver | South32 Hermosa Critical Minerals Project [ Arizona Department of Environmental Quality (ADEQ) ; February 27, 2026] https://azdeq.gov/public-notice-preliminary-decision-waive-state-water-quality-certification-federal-action-south32 Public Comment closes on MARCH 20, 2026 ! Also... Patagonia mine faces scrutiny after heavy metal discharge (Henry BREAN, Tucson.com ; January 12, 2026) https://tucson.com/n...

  Trifluoroacetic Acid (TFA), Jynto ; Link CFC replacements behind hundreds of thousands of tonnes of global 'forever chemical' pollution (News Release, Lancaster University ; 4 February 2026) https://www.lancaster.ac.uk/news/cfc-replacements-behind-hundreds-of-thousands-of-tonnes-of-global-forever-chemical-pollution Featured Research Article: Growth in Production and Environmental Deposition of Trifluoroacetic Acid due to Long-Lived CFC Replacements and Aesthetics (HART et al. , 2026) https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025GL119216

Joint geochemical and microbial controls on soil particulate and mineral-associated organic carbon decomposability across the contiguous US (YI et al. , 2026) https://www.sciencedirect.com/science/article/pii/S2590332225003422

LIU  et al. , 2025 Scientists reveal how microplastics release invisible chemical clouds into waterways (Press Release, EurekAlert ; 11 December 2025) https://www.eurekalert.org/news-releases/1109616 Featured Research Article: Molecular-level insights into derivation dynamics of microplastic-derived dissolved organic matter (LIU et al. , 2025) https://www.maxapress.com/article/doi/10.48130/newcontam-0025-0016

Atlantis Massif ,  NOAA ;  CC BY-SA 2.0 ,  Link A long section of serpentinized depleted mantle peridotite (LISSENBERG et al. , 2024) https://www.science.org/doi/10.1126/science.adp1058 Serpentinized and Carbonated Peridotite ,  Deborah KELLEY (University of Washington, USA) ;  CC BY-SA 2.5 ,  Link Also... The Control of End‐Member Iron‐to‐Sulfide Ratios on Hydrothermal Plume Geochemistry at the Rainbow, Broken Spur, and Lost City Vent Fields in the Mid‐Atlantic Ridge  (SEVGEN et al. , 2025) https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2025GC012370

Kenya Rift Valley Volcanoes and Lakes , Uwe DEDERING/Amatth2 ;  CC BY-SA 3.0 , Link Geochemical fingerprinting of plume in Suswa silicic volcanics, Kenya rift  (HONG et al. , 2025) https://www.nature.com/articles/s41598-025-22868-5 Also... The East African Rift System (ROONEY et al. , 2025) https://flore.unifi.it/bitstream/2158/1427895/1/xfinal_Rooney_2025_ear_review.pdf Geochemistry and sources of fluoride and nitrate contamination of groundwater in six districts of the Dodoma region in Tanzania (BANYIKWA, 2023) https://www.sciencedirect.com/science/article/pii/S2468227623002399 Groundwater resources in the East African Rift Valley: Understanding the geogenic contamination and water quality challenges in Tanzania (LIGATE et al. , 2021) https://www.sciencedirect.com/science/article/pii/S2468227621001356

Heavy Metal Accumulation and Plant-Mediated Nanoparticles Synthesis in Euphorbia tirucalli:  A Sustainable Remediation Strategy (YANAMANDRA et al. , 2025) https://pubs.acs.org/doi/10.1021/acsomega.5c06070

Vista panorámica de Jaén, desde el cerro en el Sector Santa Teresita ,  Ronar ESPINOZA ;  CC BY-SA 3.0 ,  Link Geospatial distribution of heavy metals in rice soils of northwestern Peru (TARILLO et al ., 2025) https://www.nature.com/articles/s41598-025-16638-6

Estimated Agricultural Pesticide Use (Dicamba, 2019), USGS ; Link TRUMP EPA Announced Plan to Reapprove Dangerous Drift-Prone Pesticide Dicamba (News Release, Center for Biological Diversity ; July 23, 2025) https://biologicaldiversity.org/w/news/press-releases/trump-epa-announces-plan-to-reapprove-dangerous-drift-prone-pesticide-dicamba-2025-07-23/ EPA announced Proposed Decision to Approve Registration of New Uses of Dicamba, Outlines New Measures to Protect Human Health, Environment (Press Release, US EPA ; July 23, 2025) https://www.epa.gov/pesticides/epa-announces-proposed-decision-approve-registration-new-uses-dicamba-outlines-new Also... Dicamba drift:  New use of an old herbicide disrupts pollinators (News Release, University of Michigan ; March 4, 2025) https://news.umich.edu/dicamba-drift-new-use-of-an-old-herbicide-disrupts-pollinators/ Featured Research Article: Off-target drift of the herbicide Dicamba disrupts plant-pollinator interactions via novel pat...

CAMP Magmatism in the context of Pangaea ,  Williamborg ;  CC BY-SA 3.0 ,  Link Pulses of ocean acidification at the Triassic-Jurassic boundary (TRUDGILL et al ., 2025) https://www.nature.com/articles/s41467-025-61344-6 Mechanisms of global climate change during the five major mass extinctions (KAIHO, 2025) https://www.nature.com/articles/s41598-025-01203-y.pdf Also... How the world of the end-Triassic extinction was similar to today - and how it differed (Howard LEE, Ars Technica ; February 8, 2023) https://arstechnica.com/science/2023/02/what-messages-does-the-end-triassic-extinction-hold-for-today/ Contrasting terrestrial and marine ecospace dynamics after the end-Triassic mass extinction event (CRIBB et al. , 2023) https://royalsocietypublishing.org/doi/10.1098/rspb.2023.2232 Molecular and isotopic evidence reveals the end-Triassic carbon isotope excursion is not from massive exogenous light carbon (FOX et al. , 2020) https://www.pnas.org/doi/10.1073/pnas.19176611...

(SEVERE  et al. , 2025) The Transport of Microplastics from Soil in Response to Surface Runoff and Splash Erosion (SEVERE et al. , 2025) https://pubs.acs.org/doi/10.1021/acs.est.5c04795

( NIGRA  et al. , 2025 ) Exposure to Low Levels of Arsenic in Public Drinking Water Linked to Lower Birthweight, Preterm Birth (Stephanie BERGER, Columbia University - Irving Medical Center ; June 17, 2025) https://www.publichealth.columbia.edu/news/exposure-low-levels-arsenic-public-drinking-water-linked-lower-birthweight-preterm-birth Featured Research Article: Public Water Arsenic and Birth Outcomes in the Environmental Influences on Child Health Outcomes Cohort (NIGRA et al. , 2025) https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2835321#250399059 Also... ( MARTINEZ-MORATA  et al. , 2022 ) Nationwide geospatial analysis of county racial and ethnic composition and public drinking water arsenic and uranium (MARTINEZ-MORATA et al. , 2022) https://www.nature.com/articles/s41467-022-35185-6 Websites : Arsenic, Inorganic (IRIS Toxicological Review; Final Report, 2025;  US EPA) https://iris.epa.gov/document/&deid=363892 Arsenic and Drinking Wa...

Map of Al-Khankah, Egypt,  Weather-forecast.com ;  Link Calibration-free picosecond LIPS for quantifying heavy metals in soils near Egyptian industrial sites (EL-SAEED et al., 2025) https://www.nature.com/articles/s41598-025-04395-5

Aerial View of the Lancang River, Jinggu Linxiang Section ,  瑞丽江的河水 ;  CC BY-SA 4.0 International ,  Link Sediment mercury and methylmercury dynamics during reservoir operation (LIU et al ., 2025) https://www.nature.com/articles/s41598-025-03255-6

Hydrogen ,  SE3-29X ;  CC BY-SA 4.0 International ,  Link Scientists define ingredients for finding natural clean hydrogen (News Release, University of Oxford ; 13 May 2025) https://www.earth.ox.ac.uk/article/scientists-define-ingredients-finding-natural-clean-hydrogen Featured Research Article Natural hydrogen resource accumulation in the continental crust (BALLENTINE et al. , 2025) https://www.nature.com/articles/s43017-025-00670-1

BLACK and YOUNG, 2025 Household-Level Variability of Nontarget Analytical Results for Drinking Water Provides a Tool for Uncovering Constituents Introduced by Distribution System Components (BLACK and YOUNG, 2025) https://pubs.acs.org/doi/10.1021/acs.est.4c14749