Menu
×
Main Library
9 a.m. - 8 p.m.
Phone: (843) 805-6930
West Ashley Library
9 a.m. – 7 p.m.
Phone: (843) 766-6635
Folly Beach Library
Closed for renovations
Phone: (843) 588-2001
John L. Dart Library
9 a.m. – 7 p.m.
Phone: (843) 722-7550
St. Paul's/Hollywood Library
9 a.m. - 8 p.m.
Phone: (843) 889-3300
Mt. Pleasant Library
9 a.m. – 8 p.m.
Phone: (843) 849-6161
Dorchester Road Library
9 a.m. - 8 p.m.
Phone: (843) 552-6466
Edgar Allan Poe/Sullivan's Island Library
9 a.m. - 6 p.m.
Phone: (843) 883-3914
John's Island Library
9 a.m. – 8 p.m.
Phone: (843) 559-1945
McClellanville Library
Closed for renovations
Phone: (843) 887-3699
Edisto Library
9 a.m. - 6 p.m.
Phone: (843) 869-2355
Wando Mount Pleasant Library
9 a.m. - 8 p.m.
Phone: (843) 805-6888
Otranto Road Library
9 a.m. - 8 p.m.
Phone: (843) 572-4094
Hurd/St. Andrews Library
9 a.m. - 8 p.m.
Phone: (843) 766-2546
Baxter-Patrick James Island
9 p.m. - 8 p.m.
Phone: (843) 795-6679
Bees Ferry West Ashley Library
9 a.m. - 8 p.m.
Phone: (843) 805-6892
Village Library
9 a.m. - 6 p.m.
Phone: (843) 884-9741
Keith Summey North Charleston Library
9 a.m. – 8 p.m.
Phone: (843) 744-2489
Mobile Library
9 a.m. - 5 p.m.
Phone: (843) 805-6909
Today's Hours
Main Library
9 a.m. - 8 p.m.
Phone: (843) 805-6930
West Ashley Library
9 a.m. – 7 p.m.
Phone: (843) 766-6635
Folly Beach Library
Closed for renovations
Phone: (843) 588-2001
John L. Dart Library
9 a.m. – 7 p.m.
Phone: (843) 722-7550
St. Paul's/Hollywood Library
9 a.m. - 8 p.m.
Phone: (843) 889-3300
Mt. Pleasant Library
9 a.m. – 8 p.m.
Phone: (843) 849-6161
Dorchester Road Library
9 a.m. - 8 p.m.
Phone: (843) 552-6466
Edgar Allan Poe/Sullivan's Island Library
9 a.m. - 6 p.m.
Phone: (843) 883-3914
John's Island Library
9 a.m. – 8 p.m.
Phone: (843) 559-1945
McClellanville Library
Closed for renovations
Phone: (843) 887-3699
Edisto Library
9 a.m. - 6 p.m.
Phone: (843) 869-2355
Wando Mount Pleasant Library
9 a.m. - 8 p.m.
Phone: (843) 805-6888
Otranto Road Library
9 a.m. - 8 p.m.
Phone: (843) 572-4094
Hurd/St. Andrews Library
9 a.m. - 8 p.m.
Phone: (843) 766-2546
Baxter-Patrick James Island
9 p.m. - 8 p.m.
Phone: (843) 795-6679
Bees Ferry West Ashley Library
9 a.m. - 8 p.m.
Phone: (843) 805-6892
Village Library
9 a.m. - 6 p.m.
Phone: (843) 884-9741
Keith Summey North Charleston Library
9 a.m. – 8 p.m.
Phone: (843) 744-2489
Mobile Library
9 a.m. - 5 p.m.
Phone: (843) 805-6909
Patron Login
menu
Item request has been placed!
×
Item request cannot be made.
×
Processing Request
Do arc silicic magmas form by fluid-fluxed melting of older arc crust or fractionation of basaltic magmas?
Item request has been placed!
×
Item request cannot be made.
×
Processing Request
- Author(s): Clemens, J. D.1 (AUTHOR) ; Stevens, G.1 (AUTHOR); Mayne, M. J.1 (AUTHOR)
- Source:
Contributions to Mineralogy & Petrology. Jun2021, Vol. 176 Issue 6, p1-28. 28p.- Subject Terms:
- Source:
- Additional Information
- Abstract: Under the right circumstances, fluid-fluxed crustal melting occurs, as demonstrated by some amphibolite-facies migmatites, but the relatively low temperatures involved make this mode of formation an unsatisfactory model for most silicic magma genesis in arcs. The concept of silicic arc magma formation through either partial melting of metabasalts or fractionation of hydrous basaltic parent magmas should also be treated with scepticism, as both these processes produce sodic and moderately to strongly peraluminous liquids that are chemically unlike most arc silicic rocks and glasses. Furthermore, if the silicic magmas are formed in the deep crust, the fractionation model predicts evolved liquids with extreme H2O contents. Thus, the answer to the question posed in the title is that neither of these two models, in isolation, seems likely for the formation of the majority of the more silicic magmas in arc environments. Given the totality of the evidence, we favour models in which high-T processes dominate. These could include fluid-absent partial melting of older non-basaltic arc crust, entrainment of source-derived crystal cargos, hybridisation with mantle-derived magmas and, in some cases, crystal fractionation of andesitic magmas at shallow crustal levels. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Contributions to Mineralogy & Petrology is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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.)
- Abstract:
Contact CCPL
Copyright 2022 Charleston County Public Library Powered By EBSCO Stacks 3.3.0 [350.3] | Staff Login
No Comments.