Vol. 321, Issue 5, 2021

Science Paper
Paleoaltimetry of the Western Andes in Northern Chile (∼18.5–19.5°S)
Sebastian Jimenez-RodriguezMatthew DettingerJay QuadeKendra E. Murray
Establishing the timing of surface uplift in the Central Andes is essential for evaluating the geodynamic mechanisms responsible for mountain building and their role in the development of dry conditions...
Science Paper
Origin and Magmatic Evolution of Late Neoproterozoic Post-Accretion high-K Calc-Alkaline Adakitic Volcanics in the Northern Arabian–Nubian Shield
Bassam A. AbuamarahMokhles K. AzerHeba S. Mubarak
In the northernmost segment of the Arabian–Nubian Shield, a post-collisional high-K calc-alkaline volcanic sequence is exposed along Wadi Abu Ma’amel, Eastern Desert of the Nubian Shield. It comprises a series...
Science Paper
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...