Explanipedia

Unlocking Gigatonne-scale Carbon Dioxide Removal with strategic tipping point frameworks Open

Matthew O Clarkson, Mariane Chiapini, Marcella Daubermann, Veronica Furey, Suzi Huff Theodoro , et al. · 2025

Achieving global climate mitigation requires a rapid acceleration of Carbon Dioxide Removal (CDR) to gigatonne (Gt) scales by 2040. Linear growth in climate solutions is insufficient to reach these targets, but system-change practices and …

An assessment of the agronomic benefits of silicate rock powders in Brazil in the context of a novel classification Open

Philipp Swoboda, Éder de Souza Martins, G. F. Vilela, Luís Ferreira, C. Silveira , et al. · 2025

The sustainable intensification of tropical agriculture requires innovative approaches to restore soil health, reduce dependency on imported fertilizers, and increase crop productivity. Brazil has emerged as a global leader in the use of s…

A review of measurement for quantification of carbon dioxide removal by enhanced weathering in soil Open

Matthew O Clarkson, Christina Larkin, Philipp Swoboda, Tom Reershemius, Tim Jesper Suhrhoff , et al. · 2024

All pathways which limit global temperature rise to <2°C above pre-industrial temperatures now require carbon dioxide removal (CDR) in addition to rapid greenhouse gas emissions reductions. Novel and durable CDR strategies need to rapid…

Alignment of industry, regulation and academia for quantification of carbon dioxide removal by enhanced weathering Open

Christina Larkin, Matthew O Clarkson, Philip Swoboda, Tom Reershemius, Tim Jesper Suhrhoff , et al. · 2024

Terrestrial enhanced weathering (EW) is a promising emerging carbon dioxide removal technique which involves the acceleration of natural weathering processes via the deployment of crushed rock feedstocks, typically Ca- and Mg-rich silicate…

A Review of Measurement for Quantification of Carbon Dioxide Removal by Enhanced Weathering in Soil Open

Matthew O Clarkson, Christina Larkin, Philipp Swoboda, Tom Reershemius, Jesper Suhrhoff , et al. · 2023

All pathways which limit global temperature rise to <2oC above pre-industrial temperatures now require carbon dioxide removal (CDR) in addition to rapid greenhouse gas emissions reductions. Novel and durable CDR strategies need to rapidly …

Uranium isotope evidence for extensive seafloor anoxia after the end-Triassic mass extinction Open

Anna Somlyay, László Palcsu, Gabriella Ilona Kiss, Matthew O Clarkson, Emma Blanka Kovács , et al. · 2023

Regional conditions cause contrasting behaviour in U-isotope fractionation in black shales: Constraints for global ocean palaeo-redox reconstructions Open

Sophie Gangl, C. H. Stirling, Hugh C. Jenkyns, William Preston, Matthew O Clarkson , et al. · 2023

Source versus weathering processes as controls on the Mackenzie river uranium isotope signature Open

Quentin Charbonnier, Matthew O Clarkson, Robert Hilton, Derek Vance · 2023

Cd isotopes in carbonates deposited during ‘OAE 2’: Assessment of a novel palaeo-productivity tracer Open

Sophie Gangl, Claudine Stirling, Matthew Druce, Matthew O Clarkson, Hugh C. Jenkyns · 2023

Cadmium (Cd) displays nutrient-type patterns in the modern ocean and has potential as a tracer of the efficiency of the ‘biological pump’ and its ability to transport CO2 from the atmosphere to the deep ocean during intervals o…

Extensive anoxia after the end-Triassic mass extinction: uranium isotope evidence from the Triassic-Jurassic boundary section at Csővár Open

Anna Somlyay, László Palcsu, Gabriella Ilona Kiss, Matthew O Clarkson, Emma Blanka Kovács , et al. · 2023

The end-Triassic mass extinction (ETE) ranks as one of the ’Big Five’ biotic crises in Earth history. The processes that led to the ecosystem collapse are thought to have been triggered by the volcanism of the Central Atlantic …

Environmental controls on very high δ238U values in reducing sediments: Implications for Neoproterozoic seawater records Open

Matthew O Clarkson, Tim Sweere, Chun Fung Chiu, Rick Hennekam, Fred Bowyer , et al. · 2023

Source versus weathering processes as controls on the Mackenzie river uranium isotope signature Open

Quentin Charbonnier, Robert Hilton, Derek Vance, Matthew O Clarkson · 2023

Redox-sensitive metals and δ<sup>238</sup>U in red and grey shales: Exploring a new archive for palaeo-redox studies Open

Sophie Gangl, Claudine Stirling, Christopher M. Moy, Hugh C. Jenkyns, James S. Crampton , et al. · 2023

Co-variation systematics of uranium and molybdenum isotopes reveal pathways for descent into euxinia in Mediterranean sapropels Open

Chun Fung Chiu, Tim Sweere, Matthew O Clarkson, Gregory F. de Souza, Rick Hennekam , et al. · 2022

Using Precambrian carbonates for seawater isotope reconstructions: constraints from LA-ICP-MS U-Pb geochronology of a post-Sturtian cap dolomite, Brazil Open

Rolando E. Clavijo Arcos, Matthew O Clarkson, Derek Vance, Stefano M. Bernasconi, Marcel Guillong , et al. · 2022

<p>Global seawater isotope reconstructions from Precambrian marine carbonates must overcome particular difficulties on two fronts: i) accurate age constraints for global stratigraphic correlations and interpretations, and ii) the rel…

The meaning of carbonate Zn isotope records: Constraints from a detailed geochemical and isotope study of bulk deep-sea carbonates Open

Kim Müsing, Matthew O Clarkson, Derek Vance · 2022

Cd isotopes in carbonates deposited during ‘OAE 2’: Assessment of a novel palaeo-productivity tracer Open

Sophie Gangl, Claudine Stirling, Matthew O Clarkson, Hugh C. Jenkyns · 2022

Cadmium (Cd) displays nutrient-type patterns in the oceans and offers potential as a tracer of the efficiency of the ocean's 'biological pump' and its ability to transport CO 2 from the atmosphere to the deep ocean during intervals of majo…

Carbonate associated uranium isotopes as a novel local redox indicator in oxidatively disturbed reducing sediments Open

Matthew O Clarkson, Rick Hennekam, Tim Sweere, Morten B. Andersen, Gert‐Jan Reichart , et al. · 2021

The Sedimentary Geochemistry and Paleoenvironments Project Open

Úna C. Farrell, Rifaat Samawi, Savitha Anjanappa, Roman Klykov, Oyeleye O. Adeboye , et al. · 2021

Geobiology explores how Earth's system has changed over the course of geologic history and how living organisms on this planet are impacted by or are indeed causing these changes. For decades, geologists, paleontologists, and geochemists h…

Temporally and spatially dynamic redox conditions on an upwelling margin: The impact on coupled sedimentary Mo and U isotope systematics, and implications for the Mo-U paleoredox proxy Open

Zhiwei He, Matthew O Clarkson, Morten B. Andersen, Corey Archer, Tim Sweere , et al. · 2021

Toward a quantitative framework for assessing the global severity of Oceanic Anoxic Events Open

Matthew O Clarkson, Timothy M. Lenton, Claudine Stirling, Alexander J. Dickson, Derek Vance · 2021

<p>Oceanic anoxia is a common response to past climate perturbations and often invoked as a direct cause of mass extinctions and faunal turnover events. During the Phanerozoic, there are numerous events that show qualitatively simila…

Upper limits on the extent of seafloor anoxia during the PETM from uranium isotopes Open

Matthew O Clarkson, Timothy M. Lenton, Morten B. Andersen, Marie-Laure Bagard, Alexander J. Dickson , et al. · 2021

Magnesium and Uranium isotope composition of the Sturtian Jacoca Formation cap dolomite, Brazil Open

Rolando E. Clavijo Arcos, Matthew O Clarkson, Derek Vance, Alcídes N. Sial, Marius Müller , et al. · 2021

The Early Cryogenian period is marked by the Sturtian glaciation episode (ca.720-660 Ma) that triggered a global perturbation to ocean chemistry and to the surface cycles of many elements.However, reconstructing variations in seawater chem…

Uranium isotopes in marine carbonates as a global ocean paleoredox proxy: A critical review Open

Feifei Zhang, Timothy M. Lenton, Álvaro del Rey, Stephen J. Romaniello, Xinming Chen , et al. · 2020

Examining pelagic carbonate-rich sediments as an archive for authigenic uranium and molybdenum isotopes using reductive cleaning and leaching experiments Open

Matthew O Clarkson, Kim Müsing, Morten B. Andersen, Derek Vance · 2019

Oceanographic and climatic evolution of the southeastern subtropical Atlantic over the last 3.5 Ma Open

Benjamin Petrick, Erin L. McClymont, Kate Littler, Antoni Rosell‐Melé, Matthew O Clarkson , et al. · 2018

Uranium isotope evidence for two episodes of deoxygenation during Oceanic Anoxic Event 2 Open

Matthew O Clarkson, Claudine H. Stirling, Hugh C. Jenkyns, Alexander J. Dickson, Don Porcelli , et al. · 2018

Significance Past “Oceanic Anoxic Events” (OAEs) represent important carbon cycle perturbations that offer the opportunity to study Earth’s response to extreme climate warming. A fundamental limitation for understanding OAEs is quantifying…

Low-oxygen waters limited habitable space for early animals Open

Rosalie Tostevin, Rachel Wood, Graham Shields, Simon W. Poulton, Romain Guilbaud , et al. · 2016

Dynamic anoxic ferruginous conditions during the end-Permian mass extinction and recovery Open

Matthew O Clarkson, Rachel Wood, Simon W. Poulton, Sylvain Richoz, Robert J. Newton , et al. · 2016

Effective use of cerium anomalies as a redox proxy in carbonate-dominated marine settings Open

Rosalie Tostevin, Graham Shields, Gary Tarbuck, Tianchen He, Matthew O Clarkson , et al. · 2016

Rare earth elements and yttrium (REY) have a distinct distribution pattern in seawater, and this pattern may be faithfully preserved in carbonate sediments and rocks. Anomalous concentrations of redox-sensitive cerium (Ce) compared with ne…

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