Abstract
The relationships between plate tectonics, volcanoes, and the magma compositions their erupt are very important for understanding the whole-earth geodynamics. To understand how these first order phenomena are related requires the integration of global datasets from different sources and tools that would allow to visualize and access the data in an efficient manner, which is a challenging task. Here we report a new version of the application tool called DashVolcano which has linked the global record of all Holocene volcanoes from the Global Volcanism Program with the major element composition of erupted rocks from GEOROC and PetDB databases (~ 140,000 rock samples in total) according to tectonic settings. The tool allows to visualize the rock compositions at a global scale with a map view, and to plot their compositions using classical classification diagrams (TAS, AFM) for individual volcanoes or for a region of interest. Moreover, radar plots permit the visualization of the relative abundance of rock types per volcano or per region of interest and how they compare to various tectonic settings. The DashVolcano application allows to explore a range of questions related to the abundance of erupted magma types in different tectonic settings, the differences in rock composition within or between a chosen region(s), volcano(es), and tectonic settings. DashVolcano should be a useful tool for research and teaching, and it is a good example of the challenges and opportunities of linking large databases at a global scale. DashVolcano is publicly available at https://dashvolcano-qpmiyp54bq-as.a.run.app/