Rethinking the redox ladder: Production of dark oxygen in bedrock groundwater

Michelle Kuusiluoma; Antonio Delgado-Huertas; Malin Bomberg; Maija Nuppunen-Puputti; Mari Nyyssönen; Rebekka Salmi; Riikka Kietäväinen

Rethinking the redox ladder: Production of dark oxygen in bedrock groundwater

Michelle Kuusiluoma
, Antonio Delgado-Huertas
, Malin Bomberg
, Maija Nuppunen-Puputti
, Mari Nyyssönen
, Rebekka Salmi
, Riikka Kietäväinen^*

^*Corresponding author for this work

University of Helsinki, Department of Geosciences and Geography
University of Granada
University of Helsinki
Geological Survey of Finland (GTK)

Research output: Contribution to conference › Conference Abstract › Scientific › peer-review

Original language	English
Publication status	Published - 14 Jan 2026
MoE publication type	Not Eligible
Event	37th Nordic Geological Winter Meeting, NGWM2026: World in Transition - Logomo, Turku, Finland Duration: 13 Jan 2026 → 15 Jan 2026 https://ngwm2026.fi

Conference

Conference	37th Nordic Geological Winter Meeting, NGWM2026
Country/Territory	Finland
City	Turku
Period	13/01/26 → 15/01/26
Internet address	https://ngwm2026.fi

Keywords

dark oxygen
groundwater
deep subsurface
deep biosphere
SAFER2028

Cite this

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title = "Rethinking the redox ladder: Production of dark oxygen in bedrock groundwater",

keywords = "dark oxygen, groundwater, deep subsurface, deep biosphere, SAFER2028",

author = "Michelle Kuusiluoma and Antonio Delgado-Huertas and Malin Bomberg and Maija Nuppunen-Puputti and Mari Nyyss{\"o}nen and Rebekka Salmi and Riikka Kiet{\"a}v{\"a}inen",

year = "2026",

month = jan,

day = "14",

language = "English",

note = "37th Nordic Geological Winter Meeting, NGWM2026 : World in Transition ; Conference date: 13-01-2026 Through 15-01-2026",

url = "https://ngwm2026.fi",

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TY - CONF

T1 - Rethinking the redox ladder: Production of dark oxygen in bedrock groundwater

AU - Kuusiluoma, Michelle

AU - Delgado-Huertas, Antonio

AU - Bomberg, Malin

AU - Nuppunen-Puputti, Maija

AU - Nyyssönen, Mari

AU - Salmi, Rebekka

AU - Kietäväinen, Riikka

PY - 2026/1/14

Y1 - 2026/1/14

KW - dark oxygen

KW - groundwater

KW - deep subsurface

KW - deep biosphere

KW - SAFER2028

M3 - Conference Abstract

T2 - 37th Nordic Geological Winter Meeting, NGWM2026

Y2 - 13 January 2026 through 15 January 2026

ER -