Magma is a hot, viscous, volatile molten silicate (melt) in the upper mantle and the deep crust. The main components are silicates and volatiles (mainly water), which make up 60–69%, and the remainder is CO2, SO, CO, N2, H2, NH3, NH4, HCl, HF, B(OH)2, KCl, and NaCl. The temperature of magma is generally between 500 °C and 1,300 °C. Its viscosity depends on the SiO2 content, and the volatile content is related to the magma temperature.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this entry
Cite this entry
(2020). Magma. In: Chen, A., Ng, Y., Zhang, E., Tian, M. (eds) Dictionary of Geotourism. Springer, Singapore. https://doi.org/10.1007/978-981-13-2538-0_1485
Download citation
DOI: https://doi.org/10.1007/978-981-13-2538-0_1485
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-2537-3
Online ISBN: 978-981-13-2538-0
eBook Packages: Earth and Environmental ScienceReference Module Physical and Materials ScienceReference Module Earth and Environmental Sciences