Joel P Johnson, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, Nicole M Gasparini, Tulane University, New Orleans, LA, United States, Claire C Masteller, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Matteo Saletti, University of British Columbia, Vancouver, BC, Canada, Marwan Hassan, Department of Geography, University of British Columbia, Vancouver, Canada and Sam Anderson, Tulane University of Louisiana, New Orleans, LA, United States