@article{fdi:010077021, title = {{U}nraveling weathering episodes in {T}ertiary regoliths by kaolinite dating ({W}estern {G}hats, {I}ndia)}, author = {{M}athian, {M}. and {A}ufort, {J}. and {B}raun, {J}ean-{J}acques and {R}iotte, {J}ean and {S}elo, {M}. and {B}alan, {E}. and {F}ritsch, {E}mmanuel and {B}hattacharya, {S}. and {A}llard, {T}.}, editor = {}, language = {{ENG}}, abstract = {{S}econdary minerals in soils can record climatic changes affecting continental surfaces over geological times. {T}heir dating should refine our present knowledge about their potential periods of formation as well as their relations with the ongoing change of climate and erosion/weathering regimes. {I}n the present study, twenty kaolinite samples from two lateritic profiles of the {K}arnataka plateau, an intensively studied area in the southern {I}ndia, have been dated using electron paramagnetic resonance ({EPR}) spectroscopy. {K}aolinite ages vary between 0.229(+/- 0.24) {M}a to 40.73(+/- 15.37) {M}a. {F}our different groups of age can be identified with ages clustered around 1.0, 3.5, 9.0 and 39.0 {M}a. {T}hese groups of age indicate local preferential weathering periods that coincide with distinct {I}ndian climatic events described in independent studies, such as monsoon strengthening. {T}hus, regional or subcontinental factors likely prevailed over global forcing in the imprint of climatic events in the regolith profiles. {T}hese results confirm that despite their simple mineralogy, laterites can contain several relictual and coexisting generations of secondary minerals and that {EPR} dating of kaolinite contributes to unraveling the complex history of continental surfaces over geological periods.}, keywords = {{W}eathering ; {L}aterite ; {EPR} dating ; {K}aolinite ; {I}ndian monsoon ; {INDE} ; {GHATS} {OCCIDENTAUX}}, booktitle = {}, journal = {{G}ondwana {R}esearch}, volume = {69}, numero = {}, pages = {89--105}, ISSN = {1342-937{X}}, year = {2019}, DOI = {10.1016/j.gr.2018.12.003}, URL = {https://www.documentation.ird.fr/hor/fdi:010077021}, }