@article{fdi:010053052,
  title = {{T}he genetic relationship between mafic dike swarms and plutonic reservoirs in the mesozoic of central chile (30{A} degrees-33{A} degrees 45'{S}) : insights from {AMS} and geochemistry},
  author = {{C}reixell, {C}. and {P}arada, {M}. {A}. and {M}orata, {D}. and {R}operch, {P}ierrich and {A}rriagada, {C}.},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ive mafic dike swarms between 30{A} degrees and 33{A} degrees 45'{S} were studied for their geochemical signature and kinematics of magma flow directions by means of {AMS} data. {I}n the {C}oastal {R}ange of central {C}hile (33{A} degrees-33{A} degrees 45'{S}), {M}iddle {J}urassic dike swarms ({C}onc{A}(3)n and {C}artagena dike swarms, {CMDS} and {C}r{MDS}, respectively) and an {E}arly {C}retaceous dike swarm ({E}l {T}abo {D}ike {S}warm, {ETDS}) display the presence of dikes of geochemically enriched (high-{T}i) and depleted (low-{T}i) basaltic composition. {T}hese dikes show geochemical patterns that are different from the composition of mafic enclaves of the {M}iddle {J}urassic {P}apudo-{Q}uintero {C}omplex, and this suggests that the dikes were injected from reservoirs not related to the plutonic complex. {T}he mantle source appears to be a depleted mantle for {J}urassic dikes and a heterogeneous-enriched lithospheric mantle for {C}retaceous dikes. {I}n the {ETDS}, vertical and gently plunging magma flow vectors were estimated for enriched and depleted dikes, respectively, which suggest, together with variations in dike thickness, that reservoirs were located at different depths for each dike family. {I}n the {E}lqui {D}ike {S}warm ({EDS}) and {L}imari {M}afic {D}ike {S}warm ({LMDS}), geochemical patterns are similar to those of the mafic enclaves of the {M}iddle {J}urassic plutons. {I}n the {LMDS}, east to west magma flow vectors are coherent with injection from neighbouring pluton located to the east. {I}n the {EDS}, some dikes show geochemical and magma flow patterns supporting the same hypothesis. {A}ccordingly, dikes do not necessarily come from deep reservoir; they may propagate in the upper crust from coeval shallow pluton chamber.},
  keywords = {{M}agma flow ; {S}r-{N}d isotopes ; {M}agnetic fabric ; {D}ike swarm ; {R}eservoir},
  booktitle = {},
  journal = {{I}nternational {J}ournal of {E}arth {S}ciences},
  volume = {98},
  numero = {1},
  pages = {177--201},
  ISSN = {1437-3254},
  year = {2009},
  DOI = {10.1007/s00531-007-0240-9},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053052},
}