Magmatic history of Dabbahu, a composite volcano in the Afar Rift, Ethiopia

2012 ◽  
Vol 125 (1-2) ◽  
pp. 128-147 ◽  
Author(s):  
L. Field ◽  
J. Blundy ◽  
A. Calvert ◽  
G. Yirgu
Keyword(s):  
Composite Volcano ◽  
History Of ◽  
Magmatic History

Chapter 13 Eruptive, volcano-tectonic and magmatic history of the Stromboli volcano (north-eastern Aeolian archipelago)

2013 ◽  
Vol 37 (1) ◽  
pp. 397-471 ◽  
Author(s):  
L. Francalanci ◽  
F. Lucchi ◽  
J. Keller ◽  
G. De Astis ◽  
C. A. Tranne
Keyword(s):  
Stromboli Volcano ◽  
North Eastern ◽  
History Of ◽  
Magmatic History ◽  
Aeolian Archipelago

Magmatic history of the Alps—A short summary

1972 ◽  
Vol 13 (1-4) ◽  
pp. 119-121 ◽  
Author(s):  
E Niggli
Keyword(s):  
Short Summary ◽  
History Of ◽  
The Alps ◽  
Magmatic History

scholarly journals Magmatic history of the Oldest Toba Tuff inferred from zircon U–Pb geochronology

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hisatoshi Ito
Keyword(s):  
Caldera Collapse ◽  
Zircon Dating ◽  
Icp Ms ◽  
Zircon Crystallization ◽  
History Of ◽  
Eruption Age ◽  
Magmatic History

Abstract The magmatic history of the Oldest Toba Tuff (OTT), the second largest in volume after the Youngest Toba Tuff (YTT), northern Sumatra, Indonesia, was investigated using U–Pb zircon dating by LA-ICP-MS. Zircon dates obtained from surface and interior sections yielded ages of 0.84 ± 0.03 Ma and 0.97 ± 0.03 Ma, respectively. The youngest OTT zircon ages were in accordance with the 40Ar/39Ar eruption age of ~ 0.8 Ma, whereas the oldest zircon dates were ~ 1.20 Ma. Therefore, the distribution of zircon U–Pb ages is interpreted to reflect protracted zircon crystallization, suggesting that the estimated 800–2,300 km3 of OTT magma accumulated and evolved for at least 400,000 years prior to eruption. This result is comparable to the volume and timescales of YTT magmatism. The similarities of both magmatic duration and geochemistry between OTT and YTT may indicate that they are similar in size and that the caldera collapse that generated OTT might be much larger previously interpreted.

Differentiation and magmatic history of Vesta: Constraints from HED meteorites and Dawn spacecraft data

Geochemistry ◽  
2019 ◽  
Vol 79 (4) ◽  
pp. 125526 ◽  
Author(s):  
Harry Y. McSween ◽  
Carol A. Raymond ◽  
Edward M. Stolper ◽  
David W. Mittlefehldt ◽  
Michael B. Baker ◽  
...  
Keyword(s):  
History Of ◽  
Spacecraft Data ◽  
Magmatic History

scholarly journals Silicic volcanism in the Scottish Lower Carboniferous; lavas, intrusions and ignimbrites of the Garleton Hills Volcanic Formation, SE Scotland

2020 ◽  
Vol 56 (1) ◽  
pp. 63-79
Author(s):  
Brian G. J. Upton ◽  
Linda A. Kirstein ◽  
Nicholas Odling ◽  
John R. Underhill ◽  
Robert M. Ellam ◽  
...  
Keyword(s):  
Extensional Tectonics ◽  
Isotopic Data ◽  
Central Type ◽  
Lower Carboniferous ◽  
The North ◽  
Basaltic Magmatism ◽  
North Side ◽  
Volcanic Formation ◽  
History Of ◽  
Magmatic History

Extensional tectonics and incipient rifting on the north side of the Iapetus suture were associated with eruption of (mainly) mildly alkaline olivine basalts. Initially in the Tournaisian (Southern Uplands Terrane), magmatic activity migrated northwards producing the Garleton Hills Volcanic Formation (GHVF) across an anomalous sector of the Southern Uplands. The latter was followed by resumption of volcanism in the Midland Valley Terrane, yielding the Arthur's Seat Volcanic Formation. Later larger-scale activity generated the Clyde Plateau Volcanic Formation (CPVF) and the Kintyre lavas on the Grampian Highlands Terrane. Comparable volcanic successions occur in Limerick, Ireland. This short-lived (c. 30 myr) phase was unique in the magmatic history of the Phanerozoic of the British Isles in which mildly alkaline basaltic magmatism locally led to trachytic differentiates. The Bangly Member of the GHVF represents the largest area occupied by such silicic rocks. The most widespread lavas and intrusions are silica-saturated/oversaturated trachytes for which new whole-rock and isotopic data are presented. Previously unrecognized ignimbrites are described. Sparse data from the fiamme suggest that the magma responsible for the repetitive ignimbrite eruptions was a highly fluid rhyolite. The Bangly Member probably represents the remains of a central-type volcano, the details of which are enigmatic.

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