@article{PAR00007901,
  title = {{L}arge-scale silicate liquid immiscibility during differentiation of tholeiitic basalt to granite and the origin of the {D}aly gap},
  author = {{C}harlier, {B}. and {N}amur, {O}. and {T}oplis, {M}. {J}. and {S}chiano, {P}ierre and {C}luzel, {N}. and {H}iggins, {M}. {D}. and {V}ander {A}uwera, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he dearth of intermediate magmatic compositions at the {E}arth's surface, referred to as the {D}aly gap, remains a major issue in igneous petrology. {T}he initially favored explanation invoking silicate liquid immiscibility during evolution of basalt to rhyolite has lost support because of the absence of any firm geological evidence for separation of {F}e-and {S}i-rich liquids in igneous rocks. {T}his work presents a record of large-scale magmatic differentiation due to immiscibility in the tholeiitic {S}ept {I}les intrusion ({C}anada), one of the largest layered plutonic bodies on {E}arth. {G}abbroic cumulate rocks from the {C}ritical {Z}one of this intrusion show a bimodal distribution in density and {P}2{O}5 content, despite identical major element chemistry of the principal magmatic phases. {I}mmiscibility is supported by the presence of contrasting {F}e-rich and {S}i-rich melt inclusions trapped in cumulus apatite. {P}hase diagrams and well-documented occurrences of small-scale immiscibility confirm that liquid-liquid unmixing and the separation of {F}e-rich and {S}i-rich liquids may contribute significantly to the {D}aly gap along the tholeiitic liquid line of descent.},
  keywords = {},
  booktitle = {},
  journal = {{G}eology},
  volume = {39},
  numero = {10},
  pages = {907--910},
  ISSN = {0016-8505},
  year = {2011},
  DOI = {10.1130/g32091.1},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00007901},
}