Planetary chronology is disturbed by Human Nature.
Planetary Nature is regular to the Earth: accruing of matter on the surface, seasonal variation, and orbital patterns. All but orbit has been upended by human activity, affecting both the geosphere (by means of anthropogenic sediment  and extraction ) and the atmosphere (by means of the dramatically changing climate ).
Even the cryosphere, tempestuous and varied as a record keeper, is permanently altered as the glaciers melt.  Earthly matter is no longer a reliable chronology of the Planet, the present illegible to the future.