@article{fdi:010081418,
  title = {{M}ulti-scale spatial distribution of {K}, {T}h and {U} in an {A}rchaean potassic granite : a case study from the {H}eerenveen batholith, {B}arberton {G}ranite-{G}reenstone {T}errain, {S}outh {A}frica},
  author = {{M}oyen, {J}. {F}. and {C}uney, {M}. and {B}aratoux, {D}avid and {S}ardini, {P}. and {C}arrouee, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e describe the multi-scale distribution of {K}, {T}h and {U} in the ca. 3.1 {G}a {H}eerenveen batholith of the {B}arberton {G}ranite{G}reenstone {T}errain. {D}ata were obtained with a combination of tools, including a portable gamma-ray spectrometer from the scale of the whole batholith to the scale of outcrops, and autoradiography for the thin section scale. {U} is concentrated preferentially in minor phases in the border shear zones of the batholith and, within these shear zones, in late pegmatites as well as fractures. {T}he processes responsible for the concentration of {U} in the {H}eerenveen batholith is discussed in terms of magmatism, hydrothermalism (redistribution of {U} in fissures associated with magmatohydrothermal fluids), and supergene alteration. {T}he statistical properties of {K}, {T}h and {U} concentrations are different. {K} shows spatial correlation over large distance, largely mirroring mappable rock types, with increased variability at larger scales. {I}n contrast, {U} is dominated by small-scale variations ("nugget effect") and its variability is, averaged and smoothed by large-scale integration. {S}patial and statistical features thus offer useful and complementary insights on petrogenetic and metallogenic processes in granitoids in addition to standard approaches (petrography, geochemistry).},
  keywords = {{AFRIQUE} {DU} {SUD} ; {BARBERTON} {MONT}},
  booktitle = {},
  journal = {{S}outh {A}frican {J}ournal of {G}eology},
  volume = {124},
  numero = {1},
  pages = {53--86},
  ISSN = {1012-0750},
  year = {2021},
  DOI = {10.25131/sajg.124.0005},
  URL = {https://www.documentation.ird.fr/hor/fdi:010081418},
}