High Sulfur in Primitive Arc Magmas, Its Origin and Implications

• Published in: Minerals
• Main Authors: Michael Zelenski, Vadim S. Kamenetsky, Nikolai Nekrylov, Alkiviadis Kontonikas-Charos
• Format: Text
• Language: English
• Published: Multidisciplinary Digital Publishing Institute 2021
• Subjects: melt inclusion; primitive arc basalt; high sulfur; magmatic anhydrite; Tolbachik; Kamchatka
• Online Access: https://doi.org/10.3390/min12010037

Sulfur contents in 98.5% of melt inclusions (MI) from calc-alkaline subduction basalts do not exceed 4000 ppm, whereas experimentally established limits of sulfur solubility in basaltic melts with high fO2 (characteristic of subduction zones, e.g., QFM + 2) surpass 14,000 ppm. Here we show that prim...