François Baudin

Sorbonne Université | UPMC · Institut des Sciences de la Terre Paris (iSTeP)

Partitioning soil organic carbon (SOC) in fractions with different biogeochemical stability is useful to better understand and predict SOC dynamics and provide information related to soil health. Multiple SOC partition schemes exist, but few of them can be implemented on large sample sets and therefore be considered relevant options for soil monito...

In urban and industrialized areas, soil contamination and degradation caused by the deposition of industrial dusts may pose significant health and environmental risks. This problem relates to the vertical mobility and bioavailability of Potentially Toxic Elements (PTE). This study investigates the fate of PTE brought by industrial dusts in urban so...

The transfer of carbon from land to the near-coastal ocean is increasingly being recognized in global carbon budgets. However, a more direct transfer of terrestrial organic carbon to the deep sea is comparatively overlooked. Among systems that connect coastal to deep-sea environments, the submarine Congo Canyon is of particular interest since the c...

Soils contain large amounts of carbon stored as organic carbon and carbonates. These carbon pools can contribute to climate regulation and are of primary importance in ensuring proper soil functioning. However, their accurate quantification remains a complex task. Rock-Eval® thermal analysis has emerged as an alternative to classic dry combustion a...

Sulfide- and sulfate-rich hydrothermal vents are involved in Earth's major geochemical cycles. An outstanding scientific question consists of finding out whether certain minerals found in hydrothermal chimneys are influenced more or less directly by microorganisms living at high temperatures (thermophiles or hyperthermophiles) in these environments...

The implementation of agroecological practices often leads to additional soil organic carbon storage, and we have sought to assess the biogeochemical stability of this additional carbon. To achieve this, we implemented a multi-method approach using particle size and density fractionation, Rock-Eval® (RE) thermal analyses and long-term incubation (4...

Fine-scale visualization and quantification of the distribution of organic matter within shaly petroleum source rocks like oil shales, offers valuable insights into their suitability for energy applications, such as unconventional energy sources. Although methods exist for imaging organic matter content in organic-rich shales, such as X-ray microto...

Archaeological wood charcoals offer a unique window to study paleoclimates through their 13 C isotope composition (δ 13 C) provided that (i) past heating temperatures are assessed to correct δ 13 C modifications related to carbonisation, and (ii) they have not been modified by post-depositional processes occurring in soil after their formation. Our...

Following votes by the Barremian Working Group, the International Subcommission on Cretaceous Stratigraphy and the International Commission on Stratigraphy, the Executive Committee of the International Union of Geological Sciences unanimously approved in March 2023 the Global Stratotype Section and Point (GSSP) for the Barremian Stage (Lower Cretac...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

La méthode Rock-Eval®, inventée en France dans les années 1970, est devenue un outil largement utilisé dans le monde entier par l’industrie pétrolière pour caractériser les roches mères, les roches réservoirs et évaluer leur potentiel en hydrocarbures. Au fil du temps, son utilisation s’est étendue à d’autres domaines tels que, entre autres, la péd...

The transfer of carbon from land to the near-coastal ocean is increasingly being recognized in global carbon budgets. However, a more direct transfer of terrestrial carbon to the deep-sea is comparatively overlooked. Among systems that connect coastal to deep-sea environments, the Congo Submarine Canyon is of particular interest since the canyon he...

Pyrogenic carbon (PyC) is a continuum of aromatic and condensed organic molecules. It represents about 15 % of organic carbon in soils and sediments. However, there is a discrepancy in the literature regarding quantification of PyC: different methods that are currently considered as reference differ largely in their results. Indeed, most methods us...

The Albian-Santonian interval (~113–83 Ma) is a key interval for Cretaceous climatic and environmental changes. This interval is associated to a rise in sea level until the Late Cenomanian (~ 94 Ma) and to a progressive increase in oceanic temperatures, leading to consider the Late Cenomanian-Santonian interval (~ 94–83 Ma) as the warmest period of...

Soils contain large amounts of carbon stored as organic carbon and carbonates. These carbon pools can contribute to climate regulation, and are of primary importance in ensuring proper soil functioning. However, their accurate quantification remains a complex task. Rock-Eval® thermal analysis has emerged as an alternative to classic dry combustion...

Partitioning soil organic carbon (SOC) in fractions with different biogeochemical stability is useful to better understand and predict SOC dynamics, and provide information related to soil health. Multiple SOC partition schemes exist but few of them can be implemented on large sample sets and therefore be considered as relevant options for soil mon...

A diversity of agricultural practices and systems enable the accrual of soil organic C (SOC) stocks, with variable efficiencies. These C-storing practices increase SOC stocks, either by increasing the inputs of plant biomass or exogenous organic matter, or by decreasing the outputs of SOC reducing SOC mineralisation rates, or both. In the perspecti...

In 2014, Pillot et al. [Identification and quantification of carbonate species using Rock-Eval pyrolysis, Oil Gas Sci. Technol.-Rev. IFP 69, 341-349. https://doi.org/10.2516/ogst/2012036] proposed to use the Rock-Eval ® method as a reliable tool to identify and quantify carbonates in solid samples from the CO 2 flux emitted by their progressive the...

The implementation of agroecological practices often leads to an additional soil organic carbon storage in these soils, of which we aimed to assess the biogeochemical stability. To achieve this, we implemented a multi-method approach using particles size and density fractionation, Rock-Eval® thermal analyses and long-term incubation (484 days), tha...

Rock-Eval® (RE) is a thermal analysis technique increasingly used to characterise soil organic matter. To interpret the results, particularly when investigating differences between samples, it is necessary to know the expected ranges of analytical error associated with the RE measurements. Moreover, the RE analyzer is now at its seventh version (RE...

Accurate soil organic carbon models are key to understand the mechanisms governing carbon sequestration in soil and to help develop targeted management strategies to carbon budget. The accuracy and reliability of soil organic carbon (SOC) models remains strongly limited by incorrect initialization of the conceptual kinetic pools and lack of stringe...

open access with the doi : 10.5802/crgeos.233 Abstract. The Mesozoic witnessed some episodes of marked accumulation and burial of organic matter (OM) in the Tethys Ocean and satellite basins, such as the Vocontian Basin (SE-France). These famous episodes, termed Oceanic Anoxic Events (OAEs), resulted from various factors, acting in complex synergie...

In this study, we combined Rock-Eval® analysis, analytical pyrolysis, and wet-chemical extractions, assisted by Fourier transform infrared spectroscopy (FTIR), and measurements of soil heterotrophic respiration. Our objective was to assess the biological and thermal stability of mixed-nature soil organic matter (SOM) derived from grass litter and k...

The carbonization process induces significant physical, elemental, and structural transformations of wood. In this study, the modification of δ18O in wood during the carbonization process was investigated in conjunction with elemental analysis, infrared spectroscopy (FTIR), and Rock-Eval thermal analysis, to explore the connection between the chemi...

Polycyclic aromatic hydrocarbons (PAHs) were studied in the soils of three proglacial areas in France (Noir and Chardon Glaciers) and Italy (Miage Glacier). PAH contents, PAH stocks and PAH contents normalized to the total organic carbon contents (PAHs/TOC ratio) were investigated along proglacial soil chronosequences to infer their evolutions with...

The Indonesian Young Toba Tuff (YTT), classically dated around 74 ka BP, is considered as a short-lived explosive cataclysmic super-eruption. The huge amounts of ash and SO2 emitted are likely to have triggered a volcanic winter which accelerated the transition to the last glaciation, and may have induced a human genetic bottleneck. However, the gl...

Une diversité de pratiques agroécologiques a conduit à un stockage additionnel de carbone organique du sol (COS). Cependant, on manque de connaissances sur la stabilité biogéochimique de ce carbone nouvellement stocké. Or, l'effet puits de COS sera plus efficace, même à court et moyen terme, si le stockage additionnel est réalisé sous forme de COS...

A geological overview on the East Mediterranean realm, featuring the tectono-stratigraphic evolution and associated depositional environments as well as the known petroleum systems, is provided in this contribution. The Levant Basin, the (northern) Western Desert, and the Nile Delta are the main focus of this review because they include significant...

The quality and quantity of soil organic matter (SOM) are key elements that impact soil health and climate regulation by soils. The Rock-Eval® thermal analysis technique is becoming more commonly used, as it represents a powerful method for SOM characterization by providing insights into bulk SOM chemistry and thermal stability. In this study, we a...

This work examines the possibility of a rapid formation of glauconite in a relatively shallow platform environment (below fair-weather wave baseline). The materials studied here are uppermost Jurassic alternations of carbonate beds and marly interbeds, namely, the Assises de Croï Formation of the Boulonnais area (northernmost France). The carbonate...

Mountain grasslands contain large stocks of soil organic carbon (SOC), of which a good part is in labile particulate form. This labile SOC may be protected by cold climate that limits microbial activity. Strong climate change in mountain regions threatens to destabilize these SOC stocks. However, so far the climate response of SOC stocks in mountai...

Soil carbon dynamics is strongly controlled by depth globally, with increasingly slow dynamics found at depth. The mechanistic basis remains however controversial, limiting our ability to predict carbon cycle-climate feedbacks. Here we combine radiocarbon and thermal analyses with long-term incubations in absence/presence of continuously ¹³C/¹⁴C-la...

Mangrove ecosystems are known to act as filters for contaminants between land and sea. In New Caledonia, urbanization has increased along the coastline during the last decades. However, the impact of urbanization on contaminant cycling in mangrove forests has remained unexplored. In this study, we investigated trace metals (TM) dynamics in an urban...

The quality and quantity of soil organic matter (SOM) are key elements of soil health and climate regulation by soils. The Rock-Eval® thermal analysis technique is increasingly used as it represents a powerful method for SOM characterization by providing insights on bulk SOM chemistry and thermal stability. In this study, we applied this technique...

Glauconite is an authigenic mineral reputed to form during long-lasting contact between a nucleus (a pre-existing phyllosilicate) and seawater. This protracted contact makes it possible to subtract the ions necessary for the construction of the neoformed phyllosilicate, here, glauconite (a mineral very close to an illite, rich in K and Fe). As a re...

The role of earthworms on biogeochemical carbon cycling is a major knowledge gap resulting from the difficulty of isolating and exploring the effects provided by the diversity of organisms. In this study, we investigated the effect of six earthworm species belonging to three ecological categories on soil organic carbon (SOC) mineralization. To this...

The Congo River is connected to its submarine canyon and supplies large quantities of terrestrial organic carbon via powerful turbiditic currents down to the Congo deep-sea fan. We investigated sediment cores from the terminal lobe complex of the Congo deep-sea fan (∼ 750 km offshore, ∼ 5000 m water depth), in order to assess the value of fatty aci...

Soil carbon dynamics is strongly controlled by depth globally, with increasingly slow dynamics found at depth. The mechanistic basis remains however controversial, limiting our ability to predict carbon cycle-climate feedbacks. Combining radiocarbon and thermal analyses of soil carbon with long-term incubations in absence/presence of continuously 1...

Widespread marine anoxia triggered by the runoff and recycling of nutrients was a key phenomenon associated with the Frasnian–Famennian (FF) mass extinction. However, the relative importance of global‐scale processes versus local influences on site‐specific environmental change remains poorly understood. Here, nitrogen‐isotope (δ¹⁵N) trends are com...

The late Carboniferous–early Permian represents a key period in the Phanerozoic history, given the major global geodynamic and climate modifications. The aim of this work is to better understand the context and characteristics of the sedimentation recorded in the continental environments of eastern equatorial Pangea at this time, through the exampl...

The present study aims to reconstruct the environmental changes leading to the Messinian Salinity Crisis during the transition from the Tortonian-Messinian marine conditions to the Messinian evaporitic environments. The core 3AGN2S04, recently drilled in the Caltanissetta Basin (Sicily), was analyzed to reveal the petrographic, mineralogical and ge...

The synrift Mayo Oulo‐Léré Basin in Northern Cameroon is located in the transition zone between the West and Central African Rift Systems. Structural and stratigraphic elements of the basin resemble those of the Yola Basin in NE Nigeria, an extension of the Upper Benue Trough. The Lower Cretaceous lacustrine shales with source rock potential which...

En milieu marin, tous les sédiments contenant de la matière organique ne deviennent pas des roches mères d’hydrocarbures mais toutes les roches mères sont (très) riches en matière organique d’origine marine, phytoplanctonique. Il importe donc de comprendre quels sont les facteurs favorisant l’accumulation et la préservation de la matière organique...

Few studies have simultaneously addressed the issue of the short- and long-term hydrological control of organic carbon (OC) export from soils and the role of the leaching process in the long-term dynamics of the soil OC pool. We combined short- and long-term approaches by investigating dissolved organic carbon (DOC) at the outlet of a small drainag...

Thermococcales, a major order of archaea inhabiting the iron‐ and sulfur‐rich anaerobic parts of hydrothermal deep‐sea vents, have been shown to rapidly produce abundant quantities of pyrite FeS2 in iron–sulfur‐rich fluids at 85°C, suggesting that they may contribute to the formation of ‘low temperature’ FeS2 in their ecosystem. We show that this p...

Changes in soil organic carbon (SOC) stocks are a major source of uncertainty for the evolution of atmospheric CO2 concentration during the 21st century. They are usually simulated by models dividing SOC into conceptual pools with contrasted turnover times. The lack of reliable methods to initialize these models, by correctly distributing soil carb...

The Marnes Bleues Formation from the Vocontian Basin (Southeastern France) shows many organic rich levels, some concomitant to oceanic anoxic events OAE1a and OAE1b. These organic-rich levels are scattered through a thick homogeneous succession of marls, poor in organic matter (OM). Through a multi-parameter approach, the organic-rich levels from t...

A 1000 m-thick sequence of Upper Cretaceous sediments outcropping in the Isabena Valley (Tremp-Graus Basin, Spain) has been studied to explore the evolution of environmental conditions that prevailed in this basin. A biostratigraphic study based on calcareous nannofossils was carried out to better constraint the age of the deposits, supplemented by...