@article{fdi:010069980, title = {{O}nset and ending of the late {P}alaeozoic ice age triggered by tectonically paced rock weathering}, author = {{G}odderis, {Y}. and {D}onnadieu, {Y}. and {C}arretier, {S}{\'e}bastien and {A}retz, {M}. and {D}era, {G}. and {M}acouin, {M}. and {R}egard, {V}.}, editor = {}, language = {{ENG}}, abstract = {{T}he onset of the late {P}alaeozoic ice age about 340 million years ago has been attributed to a decrease in atmospheric {CO}2 concentrations associated with expansion of land plants, as plants both enhance silicate rock weathering-which consumes {CO}2-and increase the storage of organic carbon on land. {H}owever, plant expansion and carbon uptake substantially predate glaciation. {H}ere we use climate and carbon cycle simulations to investigate the potential effects of the uplift of the equatorial {H}ercynian mountains and the assembly of {P}angaea on the late {P}alaeozoic carbon cycle. {I}n our simulations, mountain uplift during the {L}ate {C}arboniferous caused an increase in physical weathering that removed the thick soil cover that had inhibited silicate weathering. {T}he resulting increase in chemical weathering was sufficient to cause atmospheric {CO}2 concentrations to fall below the levels required to initiate glaciation. {D}uring the {P}ermian, the lowering of the mountains led to a re-establishment of thick soils, whilst the assembly of {P}angaea promoted arid conditions in continental interiors that were unfavourable for silicate weathering. {T}hese changes allowed {CO}2 concentrations to rise to levels sufficient to terminate the glacial event. {B}ased on our simulations, we suggest that tectonically influenced carbon cycle changes during the late {P}alaeozoic were sufficient to initiate and terminate the late {P}alaeozoic ice age.}, keywords = {{GONDWANA}}, booktitle = {}, journal = {{N}ature {G}eoscience}, volume = {10}, numero = {5}, pages = {382--386}, ISSN = {1752-0894}, year = {2017}, DOI = {10.1038/ngeo2931}, URL = {https://www.documentation.ird.fr/hor/fdi:010069980}, }