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Dissertations / Theses on the topic 'Carbonate weathering'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Howe, Stephen. "Carbonate weathering in the North of England." Thesis, University of St Andrews, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520237.

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2

Reynolds, Amanda Christine. "Geochemical Investigations of Mineral Weathering: Quantifying Weathering Intensity, Silicate versus Carbonate Contributions, and Soil-Plant Interactions." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194448.

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This study is the geochemical examination of mineral weathering and its path from hinterland, through sediment deposition and pedogenesis, to its dissolution and eventual uptake into plants or precipitation as carbonate minerals. The three papers examine the rate and character of carbonate and silicate mineral weathering over a wide range of climatic and tectonic regimes, time periods, and lithologies, and focus on very different questions. Examination of the 87Sr/86Sr ratios of architectural ponderosa pine in Chaco Canyon, New Mexico confirms a societally complex style of timber procurement

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3

Salley, Devon Mr. "Advancing Methods to Measure the Atmospheric CO2 Sink from Carbonate Rock Weathering." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1603.

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With rising atmospheric CO2 concentrations, a detailed understanding of processes that impact atmospheric CO2 fluxes is required. While a sink of atmospheric carbon from the continents to the ocean from carbonate mineral weathering is, to some degree, offset by carbonate mineral precipitation in the oceans, efforts are underway to make direct measurements of these fluxes. Measurement of the continental sink has two parts: 1) measurement of the dissolved inorganic carbon (DIC) flux leaving a river basin, and 2) partitioning the inorganic carbon flux between the amount removed from the atmospher

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4

Davenport, Jesse. "Isotopic tracing of silicate and carbonate weathering in the Himalayan erosional system." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0241.

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L'altération des lithologies himalayennes a potentiellement impacté le cycle global du carbone. Pour pouvoir contraindre et comprendre les processus qui se sont produits dans l'Himalaya et qui ont affecté ces cycles, nous devons être distinguer les signatures de l'altération du silicate et du carbonate dans la charge dissoute des fleuves de l'Himalaya. Des études antérieures ont tenté de le faire en utilisant diverses méthodes mais il n’existe toujours pas de consensus clair sur l’ampleur et le flux de l’altération du silicate dans l’Himalaya. Cette thèse propose l'utilisation du 40Ca comme tr

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5

Davenport, Jesse. "Isotopic tracing of silicate and carbonate weathering in the Himalayan erosional system." Electronic Thesis or Diss., Université de Lorraine, 2018. http://www.theses.fr/2018LORR0241.

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L'altération des lithologies himalayennes a potentiellement impacté le cycle global du carbone. Pour pouvoir contraindre et comprendre les processus qui se sont produits dans l'Himalaya et qui ont affecté ces cycles, nous devons être distinguer les signatures de l'altération du silicate et du carbonate dans la charge dissoute des fleuves de l'Himalaya. Des études antérieures ont tenté de le faire en utilisant diverses méthodes mais il n’existe toujours pas de consensus clair sur l’ampleur et le flux de l’altération du silicate dans l’Himalaya. Cette thèse propose l'utilisation du 40Ca comme tr

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6

Devine, Steven M. "Petrographic Controls on Weathering of the Haney Limestone." TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1594.

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Although karst processes in south central Kentucky have been studied extensively, the Haney Limestone Member of the Golconda Formation has not been studied in detail in contrast to limestones stratigraphically below it that are thicker. In addition, the relationship between petrographic features of the Haney Limestone and the formation of caves and karst features has not been studied extensively compared to lithographic, petrographic, or structural variables Petrographic data were collected using core and surface exposures across the study area of south central Kentucky from northern Logan and

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7

Osterhoudt, Laura Leigh. "Impacts of Carbonate Mineral Weathering on Hydrochemistry of the Upper Green River Basin, Kentucky." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1337.

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Kentucky’s Upper Green River Basin has received significant attention due to the area’s high biodiversity and spectacular karst development. While carbonate bedrock is present throughout the watershed, it is more extensive and homogenous along the river between Greensburg and Munfordville than upstream from Greensburg where the geology is more heterogeneous. This research quantitatively evaluated how lithological differences between the two catchment areas impact hydrochemistry and inorganic carbon cycling. This first required correcting catchment boundaries on previous US Geological Survey Hy

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8

Zeng, Sibo [Verfasser]. "The evolution of carbonate weathering carbon sinks under climatic and anthropogenic perturbations / Sibo Zeng." Berlin : Freie Universität Berlin, 2021. http://d-nb.info/1238595804/34.

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9

Larrahondo-Cruz, Joan Manuel. "Carbonate diagenesis and chemical weathering in the Southeastern United States: some implications on geotechnical behavior." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42912.

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The Savannah River Site (SRS) deposits in the Southeastern US between 30-45 m of depth are calcium carbonate-rich, marine-skeletal, Eocene-aged sediments with varying clastic content and extensive diagenetic alteration, including meter-sized caves that coexist with brittle and hard limestone. An experimental investigation including geotechnical (P- and S-wave velocities, tensile strength, porosity) and geochemical (EDS, XRD, SEM, N2-adsorption, stable isotopes, K-Ar age dating, ICP-assisted solubility, groundwater) studies highlighted the contrast between hard and brittle limestones, their rel

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10

Thorley, Rachel Marianne Sarah. "The role of forest trees and their mycorrhizal fungi in carbonate weathering and phosphorus biogeochemical cycling." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/15945/.

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Over millions of years, atmospheric CO2 concentrations, and Earth’s climate, are regulated by continental silicate weathering and associated marine carbonate deposition. On this geological timescale, carbonate weathering has no net effect on CO2 drawdown. However, over the coming decades-to-centuries, accelerated weathering of carbonate rocks may provide a sink for anthropogenic CO2 emissions and increase alkalinity flux to the oceans to counteract ocean acidification. Recent experimental evidence strongly supports trees and their associated mycorrhizal fungi as key drivers of silicate mineral

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11

Singer, Autumn B. "Measuring Inorganic Carbon Fluxes from Carbonate Mineral Weathering from Large River Basins: The Ohio River Basin." TopSCHOLAR®, 2017. https://digitalcommons.wku.edu/theses/2044.

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Rising atmospheric CO2 concentrations have motivated efforts to better quantify reservoirs and fluxes of Earth’s carbon. Of these fluxes from the atmosphere, one that has received relatively little attention is the atmospheric carbon sink associated with carbonate mineral dissolution. Osterhoudt (2014) and Salley (2016) explored new normalization techniques to improve and standardize a process for measuring this flux over large river basins. The present research extends this work to the 490,600 km2 Ohio River drainage basin and 11 subbasins. The study estimated the DIC flux leaving these basin

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12

Booth, Bryan Charles. "An Investigation of the Effects of Chemical and Physical Weathering on Submerged Karst Surfaces." Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5904.

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Reports an investigation of the effects of chemical and physical weathering on submerged karst surfaces that pairs laboratory studies with computer modeling studies. The first study attempts to quantify the production of carbonate fines; soluble sediments produced by the incomplete dissolution of karst minerals during chemical weathering. Results show carbonate fine production in relation to dissolutional action; Chalk: 42.8%; Coquina: 2.6%; Dolomite: 3.1%; Gray Limestone: 4.8%; Ocala Limestone: 3.1%; Shell Limestone: 6.1%; Travertine: 8.6%. Due to the use of hydrochloric acid as opposed to ca

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13

Armfield, Jesse. "Combining Observations Of Soils And Streams To Investigate Trends Caused By Reduced Acid Depositon In The Sleepers River Watershed." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/956.

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Acid deposition forms when emission-derived sulfur dioxide and nitrogen oxides interact with precipitation and was particularly severe in the northeastern US. Effects of acid deposition include declining soil quality due to low pH and base cation leaching, which subsequently altered the composition of soil solution, ground water (GW) and eventually stream water. Because of the high buffering capacity of carbonates, watersheds underlain by carbonate rich rocks have received limited attention in acid deposition studies, however, carbonate weathering by strong anthropogenic acids can increase atm

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14

Romero, Mujalli Gibran [Verfasser], and Jens [Akademischer Betreuer] Hartmann. "The role of temperature in processes controlling weathering rates of carbonate lithologies and volcanic systems / Gibran Romero Mujalli ; Betreuer: Jens Hartmann." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2019. http://d-nb.info/1187921734/34.

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15

Meyer, Kevin J. "Typhoon Impacts on the Chemical Weathering Regime and Atmospheric Carbon Consumption of a High Standing Island Watershed, Taiwan." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1467859125.

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16

Hidalgo, Sánchez Liz Stefanny. "Rôle d'un karst andin tropical (Alto Mayo, Pérou) sur la dynamique de production de matériel dissous vers l'Amazone : analyse du fonctionnement hydrogéologique et des flux associés." Electronic Thesis or Diss., Sorbonne université, 2020. http://www.theses.fr/2020SORUS326.

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Dans le domaine andin du bassin amazonien, les zones karstiques jouent un rôle prépondérant sur la géochimie du fleuve Amazone et sur la consommation de CO2 liée aux processus d’altération, malgré la faible surface qu’elles couvrent (<1% du bassin de l’Amazone). Le Pérou concentre près de 90% de ces zones karstiques andines, qui s’étagent des sommets de la cordillère (à plus de 5000 m d’altitude) jusqu’au piedmont amazonien (400 m), dans une grande variété d’écosystèmes tropicaux. Bien que ces zones représentent une source majeure de matières dissoutes exportées par l’Amazone, elles n’ont j

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17

Simon, André. "Erarbeitung einer Methodik zur Reduzierung der Sauerwasserbildung durch gezielte Abraumverkippung unter Beachtung geogener Potentiale." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-197454.

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Mit dem Grundwasserwiederanstieg in Braunkohleabraumkippen werden die aus der Pyritverwitterung resultierenden Stoffausträge an Sulfat-, Eisen-, Schwermetall- und H+-Ionen gelöst. Im Rahmen dieser Dissertation wurde eine Methodik entwickelt, mit deren Hilfe Problembereiche ausgehalten und somit Maßnahmen im aktiven mitteldeutschen Tagebaubetrieb ergriffen werden können, um die zukünftige Beeinflussung der umgebenden Grund- und Oberflächenwasserkörper zu minimieren. An Vorfeldsedimenten konnten in Feld-eluaten, Stoßbeprobungen und Verwitterungsversuchen geochemische Eigenschaften ermittelt werd

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18

Subasinghe, Nalaka Deepal. "Formation of secondary phosphates by weathering of apatite rich carbonatite : an example from Sri Lanka." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270305.

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19

Maffre, Pierre. "Interactions entre tectonique, érosion, altération des roches silicatées et climat à l'échelle des temps géologiques : rôle des chaînes de montagnes." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30287.

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Cette thèse explore l'influence des orogenèses sur le climat de la Terre à travers l'étude quantitative des interactions entre dynamique climatique, érosion des continents, taux d'altération chimique des roches silicatées et cycle géologique du carbone. Le premier chapitre détaille les mécanismes par lesquels les reliefs affectent la circulation atmosphérique et océanique, l'emphase est mise sur la circulation thermohaline. Le second chapitre compare les effets des changements de dynamique climatique et d'érosion liés à la présence de montagnes sur l'altérabilité des continents. Le troisième c

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20

Graz, Yann. "Production et devenir du carbone organique fossile libéré par les altérations mécaniques et chimiques des formations marneuses : exemple des "terres noires" des bassins versants expérimentaux de Draix (Alpes de Haute Provence, France)." Phd thesis, Université d'Orléans, 2009. http://tel.archives-ouvertes.fr/tel-00426401.

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La contribution, dans le cycle supergène, du carbone organique fossile (COF), issu de l'érosion des roches sédimentaires, est aujourd'hui une inconnue majeure du cycle du carbone. Le présent travail, initié dans le cadre du GIS Draix "étude de l'érosion en montagne », s'est intéressé au devenir de la matière organique contenue dans les "terres noires" (marnes jurassiques) des bassins versants de Draix (Alpes de haute Provence, France). Ceci a nécessité : - la mise en évidence de la contribution de COF au sein des compartiments supergènes (sols, particules fluviatiles, altérites) à travers une

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21

Ponnou-Delaffon, Vivien. "Fonctionnement de la Zone Critique en milieu agricole : cas du Bassin versant d'Auradé : variations hydrochimiques spatio-temporelles et bilans d'érosion." Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0056.

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Comprendre le fonctionnement hydrochimique de la Zone Critique reste un enjeu fort de ces décennies, notamment en ce qui concerne les interactions entre les cycles de l’eau, du carbone et de l’azote. Le bassin versant agricole du Montoussé à Auradé (Gers) soumis à des fortes pressions anthropiques et climatiques sur ces cycles, est l’un des dispositifs pérennes d’observation à long terme de l’infrastructure de recherche OZCAR, en charge de surveiller la zone critiques en milieu agricole. Ce bassin versant carbonaté est soumis à une climat semi-aride marqué par une forte évapotranspiration et d

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22

"Glacial Processes on Earth and Mars: New Perspectives from Remote Sensing and Laboratory Analyses." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.29974.

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abstract: Chemical and physical interactions of flowing ice and rock have inexorably shaped planetary surfaces. Weathering in glacial environments is a significant link in biogeochemical cycles – carbon and strontium – on Earth, and may have once played an important role in altering Mars’ surface. Despite growing recognition of the importance of low-temperature chemical weathering, these processes are still not well understood. Debris-coated glaciers are also present on Mars, emphasizing the need to study ice-related processes in the evolution of planetary surfaces. During Earth’s history, sub

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23

Simon, André. "Erarbeitung einer Methodik zur Reduzierung der Sauerwasserbildung durch gezielte Abraumverkippung unter Beachtung geogener Potentiale." Doctoral thesis, 2015. https://tubaf.qucosa.de/id/qucosa%3A23021.

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Mit dem Grundwasserwiederanstieg in Braunkohleabraumkippen werden die aus der Pyritverwitterung resultierenden Stoffausträge an Sulfat-, Eisen-, Schwermetall- und H+-Ionen gelöst. Im Rahmen dieser Dissertation wurde eine Methodik entwickelt, mit deren Hilfe Problembereiche ausgehalten und somit Maßnahmen im aktiven mitteldeutschen Tagebaubetrieb ergriffen werden können, um die zukünftige Beeinflussung der umgebenden Grund- und Oberflächenwasserkörper zu minimieren. An Vorfeldsedimenten konnten in Feld-eluaten, Stoßbeprobungen und Verwitterungsversuchen geochemische Eigenschaften ermittelt werd

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24

Banerjee, Anupam. "A geochemical and Nd-Sr-Ca isotopic study of silicate weathering, crustal recycling and petrogenesis of carbonatites." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5447.

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Weathering of silicate rocks releases cations and anions which are transported to the oceans by rivers where calcium carbonate precipitates from the seawater. This process results in the net consumption of atmospheric CO2 and has regulated the Earth’s surface temperature over geological timescales. These marine carbonates along with other sediments are eventually subducted resulting in mantle heterogeneity, which is subsequently sampled by mantle-derived magmas. This thesis investigates the geochemical and isotopic effects of weathering of silicate rocks on the surface of the Earth and t

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