@article{fdi:010086658, title = {{L}eaves in iron oxide : remarkable preservation of a neogene flora from {N}ew {C}aledonia}, author = {{L}ocatelli, {E}. {R}. and {B}riggs, {D}. {E}. {G}. and {L}eslie, {A}. and {M}unzinger, {J}{\'e}r{\^o}me and {G}randcolas, {P}. and {L}owry, {P}. {P}. and {C}antrill, {D}. {J}. and {M}aurizot, {P}. and {C}luzel, {D}. and {F}olcher, {N}. and {G}arrouste, {R}. and {N}el, {A}.}, editor = {}, language = {{ENG}}, abstract = {{A} {N}eogene hematite-goethite concretionary 'ironstone' horizon in laterized fluvial sediments in the {M}assif du {S}ud of {N}ew {C}aledonia yields abundant fossil dicotyledonous angiosperm leaves. {T}he leaves are preserved in iron oxide, mainly goethite, which replicates the morphology and anatomy of the leaf tissues and comprises 73% of the matrix. {O}rganic remains are minimal and associated with aluminosilicate clay. {L}eaf tissues are preserved three-dimensionally in multiple ways including casts/molds, permineralization/petrifaction, and replacement. {A}lthough the mesophyll is less well preserved, reflecting its greater susceptibility to decay, cellular details of vascular and epidermal tissues are commonly evident. {A}nalyses of leaves from an analogous modern setting reveal the early encrustation and impregnation of tissues by amorphous iron-oxides and clays in association with a microbial biofilm. {W}e propose a taphonomic model in which the fossil leaves, like their modern counterparts, were permeated by iron oxides due to the high availability of iron derived from weathering of ultramafic basement. {I}n contrast to the iron-rich aluminosilicate coatings that form in relatively iron-poor settings, the unusually high concentration of dissolved iron oxides permitted rapid anatomical preservation.}, keywords = {{NOUVELLE} {CALEDONIE}}, booktitle = {}, journal = {{P}alaios}, volume = {37}, numero = {10}, pages = {622--632}, ISSN = {0883-1351}, year = {2022}, DOI = {10.2110/palo.2022.019}, URL = {https://www.documentation.ird.fr/hor/fdi:010086658}, }