@article{fdi:010066027,
  title = {{I}nsights for the melt migration, the volcanic activity and the ultrafast lithosphere delamination related to the {Y}ellowstone plume ({W}estern {USA})},
  author = {{R}igo, {A}. and {A}dam, {C}. and {G}r{\'e}goire, {M}. and {G}erbault, {M}uriel and {M}eyer, {R}. and {R}abinowicz, {M}. and {F}ontaine, {F}. and {B}onvalot, {S}ylvain},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {Y}ellowstone-{E}ast {S}nake {R}iver {P}lain hotspot track has been intensely studied since several decades and is widely considered to result from the interaction of a mantle plume with the {N}orth {A}merican plate. {A}n integrated conclusive geodynamic interpretation of this extensive data set is however presently still lacking, and our knowledge of the dynamical processes beneath {Y}ellowstone is patchy. {I}t has been argued that the {Y}ellowstone plume has delaminated the lower part of the thick {W}yoming cratonic lithosphere. {W}e derive an original dynamic model to quantify delamination processes related to mantle plume-lithosphere interactions. {W}e show that fast (similar to 300 ka) lithospheric delamination is consistent with the observed timing of formation of successive volcanic centres along the {Y}ellowstone hotspot track and requires (i) a tensile stress regime within the whole lithosphere exceeding its failure threshold, (ii) a purely plastic rheology in the lithosphere when stresses reach this yield limit, (iii) a dense lower part of the 200 km thick {W}yoming lithosphere and (iv) a decoupling melt horizon inside the median part of the lithosphere. {W}e demonstrate that all these conditions are verified and that similar to 150 km large and similar to 100 km thick lithospheric blocks delaminate within 300 ka when the {Y}ellowstone plume ponded below the 200 km thick {W}yoming cratonic lithosphere. {F}urthermore, we take advantage of the available extensive regional geophysical and geological observation data sets to design a numerical 3-{D} upper-mantle convective model. {W}e propose a map of the ascending convective sheets contouring the {Y}ellowstone plume. {T}he model further evidences the development of a counter-flow within the lower part of the lithosphere centred just above the {Y}ellowstone mantle plume axis. {T}his counter-flow controls the local lithospheric stress field, and as a result the trajectories of feeder dykes linking the partial melting source within the core of the mantle plume with the crust by crosscutting the lithospheric mantle. {T}his counter-flow further explains the 50 km {NE} shift observed between the mantle plume axis and the present-day {Y}ellowstone {C}aldera as well as the peculiar shaped crustal magma chambers.},
  keywords = {{I}nstability analysis ; {M}antle processes ; {C}ratons ; {D}ynamics: convection currents, and mantle plumes ; {H}otspots ; {N}orth {A}merica ; {ETATS} {UNIS}},
  booktitle = {},
  journal = {{G}eophysical {J}ournal {I}nternational},
  volume = {203},
  numero = {2},
  pages = {1274--1301},
  ISSN = {0956-540{X}},
  year = {2015},
  DOI = {10.1093/gji/ggv360},
  URL = {https://www.documentation.ird.fr/hor/fdi:010066027},
}