Bridging basalts and rhyolites in the Yellowstone–Snake River Plain volcanic province: The elusive intermediate step
作者: Dawid SzymanowskiBen S. EllisOlivier BachmannMarcel GuillongWilliam M. Phillips
作者单位: 1Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zürich, Clausiusstrasse 25, 8092 Zürich, Switzerland
2Idaho Geological Survey, University of Idaho, 875 Perimeter Drive MS 3014, Moscow, ID 83844-3014, USA
刊名: Earth and Planetary Science Letters, 2015, Vol.415 , pp.80-89
来源数据库: Elsevier Journal
DOI: 10.1016/j.epsl.2015.01.041
关键词: HeiseYellowstone hotspotmelt inclusionsintermediatesAFC
原始语种摘要: Abstract(#br)Many magmatic provinces produce strongly bimodal volcanism with abundant mafic and silicic magmas yet a scarcity of intermediate (55–65 wt.% SiO 2 ) compositions. In such bimodal settings, much debate revolves around whether the basaltic magmas act as heat sources to melt pre-existing crust, or whether they are the parents to the silicic magmas (a fractionation-dominated evolution). Until now, this lack of coeval intermediate compositions has commonly been used to support models involving large degrees of crustal melting. Detailed analysis of mineral cargoes of ignimbrites from the 6.6–4 Ma Heise volcanic field in the famously bimodal Yellowstone–Snake River Plain (YSRP) volcanic province has revealed the existence of intermediate liquids associated with main stage rhyolitic...
全文获取路径: Elsevier  (合作)
影响因子:4.349 (2012)

  • volcanic 火山的
  • elusive 逃避的
  • intermediate 中频
  • bimodal 双峰的
  • rhyolitic 流纹岩的
  • magmatic 岩浆的
  • existence 存在
  • crust 外壳
  • fractionation 分级
  • plagioclase 斜长石