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Volcanism on Mercury

Thomas, Rebecca J. and Rothery, David A. (2019). Volcanism on Mercury. Elements, 15(1) pp. 27–32.

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Mercury's volcanic nature has been revealed by NASA's MESSENGER mission. We now know that all, or most, of the surface has, at some point, been flooded by lavas, sometimes in extremely voluminous eruptions. The ages of Mercury's lava surfaces reveal that large-volume effusive volcanism ceased about 3.5 billion years ago due to planetary cooling. Mercury's crust then went into a state of global contraction, thereby impeding further magma ascent. However, some smaller-scale volcanism continued at zones of crustal weakness, particularly at impact craters. Much of this later volcanism has been violently explosive, with volatile gases potentially helping the magma rise and ripping it apart when released to the vacuum at the surface.

Item Type: Journal Item
Copyright Holders: 2019 Mineralogical Society of America
ISSN: 1811-5217
Keywords: lava plains; explosive volcanism; thermal evolution; Mercury
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Physical Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 59223
SWORD Depositor: Jisc Publications-Router
Depositing User: Jisc Publications-Router
Date Deposited: 21 Feb 2019 10:01
Last Modified: 29 Mar 2019 11:50
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