@article{fdi:010054340, title = {{L}ake highstands on the {A}ltiplano ({T}ropical {A}ndes) contemporaneous with {H}einrich 1 and the {Y}ounger {D}ryas : new insights from (14){C}, {U}-{T}h dating and delta(18){O} of carbonates}, author = {{B}lard, {P}.{H}. and {S}ylvestre, {F}lorence and {T}ripati, {A}.{K}. and {C}laude, {C}. and {C}ausse, {C}. and {C}oudrain, {A}nne and {C}ondom, {T}homas and {S}eidel, {J}.{L}. and {V}imeux, {F}ran{\c{c}}oise and {M}oreau, {C}. and {D}umoulin, {J}.{P}. and {L}av{\'e}, {J}.}, editor = {}, language = {{ENG}}, abstract = {{T}his study provides new geochronological and stable isotope constraints on {L}ate {P}leistocene fluctuations in lake level that occurred in the closed-watershed of the {C}entral {A}ltiplano between similar to 25 and similar to 12 ka. {U}-series isochrons and (14){C} ages from carbonates are used to confirm and refine the previous chronology published ({P}laczek et al., 2006b). {O}ur new data support three successive lake highstands during the {L}ate {P}leistocene: (i) the lake {S}ajsi cycle, from similar to 25 to 19 ka, that culminated at 3670 m at about 22 ka, almost synchronously with the global last glacial maximum, (ii) the {L}ake {T}auca cycle, that lasted from 18 to 14.5 ka and was characterized by the highest water level, reached at least 3770 m from 16.5 to 15 ka, (iii) the {L}ake {C}oipasa cycle, from 12.5 to 11.9 ka, that reached an elevation of similar to 3700 m, 42 m above the elevation of the {S}alar de {U}yuni (3658 m). {T}hese high amplitude lake level fluctuations are in phase with the cold-warm oscillations that occurred in the {N}orth {A}tlantic and {G}reenland during the {L}ate {P}leistocene ({H}einrich 1, {B}olling-{A}llerod, {Y}ounger {D}ryas). {S}uch temporal coincidence supports the hypothesis that wet events recorded in the {C}entral {A}ltiplano are controlled by the north-south displacement of the {I}nter {T}ropical {C}onvergence {Z}one resulting from changes in the meridional temperature gradient. {F}inally, the oxygen isotope ratios measured in these lacustrine carbonates allows for calculation of the delta(18){O} value of paleolake waters. {E}stimates of water delta(18){O} ({V}-{SMOW}) are -2.8 +/- 0.7 parts per thousand for {L}ake {T}auca and -1.6 +/- 0.9 parts per thousand, for {L}ake {C}oipasa. {T}hese data are used to constrain changes in lake hydrology and can be interpreted to indicate that the proportion of precipitation arising from local water recycling was less than 50%.}, keywords = {{T}ropics ; {A}ltiplano ; {L}ake ; {T}auca ; {C}oipasa ; {H}einrich 1 ; {Y}ounger {D}ryas ; {U}-{T}h ; {U}-series dating ; (14){C} ; delta(13){C} ; delta(18){O} ; {BOLIVIE} ; {ANDES}}, booktitle = {}, journal = {{Q}uaternary {S}cience {R}eviews}, volume = {30}, numero = {27-28}, pages = {3973--3989}, ISSN = {0277-3791}, year = {2011}, DOI = {10.1016/j.quascirev.2011.11.001}, URL = {https://www.documentation.ird.fr/hor/fdi:010054340}, }