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1. Implications of Chemical Signatures in Apatite from Ultrapotassic to Potassic Rocks of the Navajo Volcanic Field

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Numerous studies on rocks of the Navajo volcanic field (NVF) have been conducted in the last fifty years, but there are still questions about the origin and evolution of NVF magmas. Electron microprobe and laser ablation ICP-MS analyses on apatite crystals from NVF rocks reveal distinct chemical differences and trends that further support the notion that these rocks were created from several different magma sources. Bulk-rock geochemical trends reveal...

2. New Insight into Volatile Sources and Magmatic Processes of Ultrapotassic Rocks in the Navajo Volcanic Field from Chlorine Isotopes and Chlorine-Fluorine Trends

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The dominant bulk-rock geochemical signatures and trends of rocks in the Navajo volcanic field (NVF) are well established, but the volatile histories of these rocks are poorly defined and understood. New insight into the types and trends of volatiles rocks of the NVF reveal that magmatic gases are F rich and variable but generally Cl-depleted. NVF volatiles were derived from a source with distinctly positive
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