Transport of bisaccate coniferous fossil pollen grains to coastal sediments: An example from the earliest Pliocene Orb ria (Languedoc, southern France)

The detailed palaeogeographic and stratigraphic knowledge of the earliest Pliocene Orb ria permits a good understanding of pollen sedimentation, especially of bisaccate coniferous pollen, with reference both to the plant distribution and to pollen dispersal factors. In such a coastal sedimentary situation that is entirely dependent in river action, bisaccate coniferous pollen — generally connsidered to be favoured by aerial transport — are predominantly carried by fluvial activity and transferred to the marine currents.