All Articles tagged chemical weathering

• Science Paper
  November 04, 2024 EDT
  Calcite Dissolution-Reprecipitation Reactions Are a Key Control on the Sr/Ca, Mg/Ca and δ^88/86Sr Compositions of Himalayan River Waters
  Emily I. StevensonKevin W. BurtonIan J. ParkinsonRachael H. JamesBasak KisakürekEd TipperMichael Bickle

  The increase in Sr/Ca ratios of Himalayan rivers is modelled by balanced dissolution-precipitation reactions. The stable Sr-isotopic compositions and Sr/Ca ratios of waters constrain the carbonate reprecipitation rates.

  Abstract
• Science Paper
  June 20, 2024 EDT
  Controls on the Termination of Cretaceous Oceanic Anoxic Event 2 in the Tarfaya Basin, Morocco
  Chiara KrewerSimon W. PoultonRobert J. NewtonChristian MärzBenjamin J. W. MillsThomas Wagner

  The recovery from OAE2 in the Tarfaya Basin was driven by decreasing chemical weathering, less intensely reducing conditions and pulses of phosphorous drawdown.

  Abstract
• Science Paper
  August 15, 2023 EDT
  Isotope Ratio – Discharge Relationships of Solutes Derived From Weathering Reactions
  Jennifer L. DruhanPaolo Benettin

  A new reactive transport model framework merges chemical weathering, stable isotope fractionation and StorAge Selection functions to produce characteristic concentration - discharge (C-Q) and isotope ratio - discharge (δ-Q) relationships

  Abstract
• Science Paper
  May 01, 2022 EDT
  Weathering Intensity and Lithium Isotopes: A Reactive Transport Perspective
  Matthew J. WinnickJennifer L. DruhanKate Maher

  Lithium isotopes have emerged as a powerful tool to probe the response of global weathering to changes in climate. Due to the preferential incorporation of 6Li into clay minerals during...

  Abstract
• Science Paper
  May 01, 2021 EDT
  Presentation and Applications of Mixing Elements and Dissolved Isotopes in Rivers (MEANDIR), a Customizable MATLAB Model for Monte Carlo Inversion of Dissolved River Chemistry
  Preston Cosslett KemenyMark Albert Torres

  The dissolved chemistry of rivers has been extensively studied to elucidate physical and climatic controls of chemical weathering at local to global spatial scales, as well as the impacts of...

  Abstract
• Science Paper
  February 01, 2015 EDT
  On Discrimination Between Carbonate and Silicate Inputs to Himalayan Rivers
  Mike J. BickleEd TipperAlbert GalyHazel ChapmanNigel Harris

  We review new and published analyses of river waters, bedloads and their constituent minerals from the Dhauli Ganga and Alaknanda, headwaters of the Ganges in Garhwal, and the Marsyandi in...

  Abstract