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On 28 September 2023 at 10:36:08 UTC, Gravatar Barbara Zach:
  • Renamed resource Archaeobotany - Bilge Pump Flotation System to Archaeobotany - Bucket flotation in the field in Archaeobotany videos


  • Updated description of resource Archaeobotany - Bucket flotation in the field in Archaeobotany videos from

    Flotation is a recovery technique used in archaeology to retrieve light organic remains from the soil matrix through water separation. Here I am floating a 10 liter bulk sample from a prehistoric site in northwest Nevada using an affordable and efficient flotation machine that recycles water. The first tank that I dump the sample into has a mesh cloth collecting the heavy fraction that sinks (lithic tools, bone, a few non-cultural rocks) while the lighter fraction (seeds, woody remains, roots) floats up to the surface of the water and is collected in the colander cloth mesh. I was very happy with the flotation device: we managed to float 79 bulk samples within three weeks out in the field. Unfortunately my camera battery died before I finished floating the entire sample. You can find more information about the bilge pump flotation machine from Shelton and Whites paper, "The Hand-Pump Flotation System: A New Method for Archaeobotanical Recovery".
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    Flotation is a recovery technique used in archaeology to retrieve light organic remains from the soil matrix through water separation. Here 10 liter bulk samples from a prehistoric site in northern Germany using an affordable and efficient flotation technique. The sample is dumped into a sieve collecting the light fraction (seeds, woody remains, roots) while the heavier fraction stays in the bucket.


  • Uploaded a new file to resource Archaeobotany - Bucket flotation in the field in Archaeobotany videos


  • Removed field datastore_contains_all_records_of_source_file from resource Archaeobotany - Bucket flotation in the field in Archaeobotany videos


  • Changed value of field url_type to in resource Archaeobotany - Bucket flotation in the field in Archaeobotany videos