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Evidence for Young Volcanism on Mercury from the Third MESSENGER Flyby.

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Title: Evidence for Young Volcanism on Mercury from the Third MESSENGER Flyby.
Authors: Prockter, Louise M., Ernst, Carolyn M., Denevi, Brett W., Chapman, Clark R., Head III, James W., Fassett, Caleb I., Merline, William J., Solomon, Sean C., Watters, Thomas R., Strom, Robert G., Cremonese, Gabriele, Marchi, Simone, Massironi, Matteo
Source: Science (pre-March 2025). 8/ 6/2010, Vol. 329 Issue 5992, p668-671. 4p.
Subjects: Volcanism, Atmospheric mercury, Messenger (Space probe), Explosive volcanic eruptions, Space vehicles
Abstract: During its first two flybys of Mercury, the MESSENGER spacecraft acquired images confirming that pervasive volcanism occurred early in the planet's history. MESSENGER's third Mercury flyby revealed a 290-kilometer-diameter peak-ring impact basin, among the youngest basins yet seen, having an inner floor filled with spectrally distinct smooth plains. These plains are sparsely cratered, postdate the formation of the basin, apparently formed from material that once flowed across the surface, and are therefore interpreted to be volcanic in origin. An irregular depression surrounded by a halo of bright deposits northeast of the basin marks a candidate explosive volcanic vent larger than any previously identified on Mercury. Volcanism on the planet thus spanned a considerable duration, perhaps extending well into the second half of solar system history. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Evidence for Young Volcanism on Mercury from the Third MESSENGER Flyby.
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  Data: <searchLink fieldCode="AR" term="%22Prockter%2C+Louise+M%2E%22">Prockter, Louise M.</searchLink><br /><searchLink fieldCode="AR" term="%22Ernst%2C+Carolyn+M%2E%22">Ernst, Carolyn M.</searchLink><br /><searchLink fieldCode="AR" term="%22Denevi%2C+Brett+W%2E%22">Denevi, Brett W.</searchLink><br /><searchLink fieldCode="AR" term="%22Chapman%2C+Clark+R%2E%22">Chapman, Clark R.</searchLink><br /><searchLink fieldCode="AR" term="%22Head+III%2C+James+W%2E%22">Head III, James W.</searchLink><br /><searchLink fieldCode="AR" term="%22Fassett%2C+Caleb+I%2E%22">Fassett, Caleb I.</searchLink><br /><searchLink fieldCode="AR" term="%22Merline%2C+William+J%2E%22">Merline, William J.</searchLink><br /><searchLink fieldCode="AR" term="%22Solomon%2C+Sean+C%2E%22">Solomon, Sean C.</searchLink><br /><searchLink fieldCode="AR" term="%22Watters%2C+Thomas+R%2E%22">Watters, Thomas R.</searchLink><br /><searchLink fieldCode="AR" term="%22Strom%2C+Robert+G%2E%22">Strom, Robert G.</searchLink><br /><searchLink fieldCode="AR" term="%22Cremonese%2C+Gabriele%22">Cremonese, Gabriele</searchLink><br /><searchLink fieldCode="AR" term="%22Marchi%2C+Simone%22">Marchi, Simone</searchLink><br /><searchLink fieldCode="AR" term="%22Massironi%2C+Matteo%22">Massironi, Matteo</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 8/ 6/2010, Vol. 329 Issue 5992, p668-671. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Volcanism%22">Volcanism</searchLink><br /><searchLink fieldCode="DE" term="%22Atmospheric+mercury%22">Atmospheric mercury</searchLink><br /><searchLink fieldCode="DE" term="%22Messenger+%28Space+probe%29%22">Messenger (Space probe)</searchLink><br /><searchLink fieldCode="DE" term="%22Explosive+volcanic+eruptions%22">Explosive volcanic eruptions</searchLink><br /><searchLink fieldCode="DE" term="%22Space+vehicles%22">Space vehicles</searchLink>
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  Data: During its first two flybys of Mercury, the MESSENGER spacecraft acquired images confirming that pervasive volcanism occurred early in the planet's history. MESSENGER's third Mercury flyby revealed a 290-kilometer-diameter peak-ring impact basin, among the youngest basins yet seen, having an inner floor filled with spectrally distinct smooth plains. These plains are sparsely cratered, postdate the formation of the basin, apparently formed from material that once flowed across the surface, and are therefore interpreted to be volcanic in origin. An irregular depression surrounded by a halo of bright deposits northeast of the basin marks a candidate explosive volcanic vent larger than any previously identified on Mercury. Volcanism on the planet thus spanned a considerable duration, perhaps extending well into the second half of solar system history. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: 8/ 6/2010
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