Volcanoes: From Magmas to Tephra and Epivolcaniclastics
Abstract
Volcaniclastic rocks are fundamental component of volcanoes, usually being more significant volumetrically than lava. Magmatic clasts may occur either during primary volcanic eruption or post-eruptively. The production of pyroclastic rocks particularly depends on the nature of magmas (basaltic, andesitic, rhyolitic,…) because their properties have an important bearing on the mode of eruption. The redeposited volcanic sediment (epivolcaniclastic deposits) occur after volcanic eruption by surface processes involving weathering, erosion and mass-wastage of coherent volcanic rocks. As a result, chronological and spatial relations of volcanic successions allow to characterize the tectonic settings (continental versus oceanic areas; convergent, divergent or passive tectonic environments).
Fields of Study & Subjects
Geological and Geochemical Analysis
Geotourism and Geoheritage Conservation
Geological Formations and Processes Exploration
Publication details
- Journal / source
- Volcaniclastic Rocks, from Magmas to Sediments
- Publisher
- CRC Press
- Pages
- 1–32
- Publication date
- 23 January 2026
- Language
- EN
- Document type
- Book chapter