All Articles tagged retrogression

• Science Paper
  December 02, 2024 EDT
  Deformation by Pressure Solution and Grain Boundary Sliding in a Retrograde Shear Zone in Southern New England, USA
  Robert P. WintschBryan A. WathenRyan J. McAleerJesse WaltersJessica A. Matthews

  Micaceous schist near Ansonia, Connecticut developed in a ductile fault by dissolution of original minerals and precipitation of new platy micas that produced a very fissile rock.

  Abstract
• Science Paper
  March 01, 2021 EDT
  Unmixing Multiple Metamorphic Muscovite Age Populations With Powder X-ray Diffraction and 40Ar/39Ar Analysis
  Ryan J. McaleerDavid L. BishMichael J. KunkPeter M. ValleyGregory J. WalshRobert P. Wintsch

  A combination of modal estimates from powder X-ray diffraction (XRD) experiments and argon isotopic data shows that muscovite 40Ar/39Ar total gas age correlates with muscovite composition near the retrograde Bald...

  Abstract