aggregatedatasets

Aggregate Datasets are aggregates of samples of a particular data type. Some examples:
* Plant macrofossil samples from a group of packrat middens collected from a particular valley, mountain range, or other similarly defined geographic area. Each midden is from a different Site or Collection Unit, but they are grouped into time series for that area and are published as a single dataset.
* Samples collected from 32 cutbanks along several km of Roberts Creek, northeast Iowa. Each sample is from a different site, but they form a time series from 0-12,510 14C yr BP, and pollen, plant macrofossils, and beetles were published and graphed as if from a single site.
* A set of pollen surface samples from a particular region or study that were published and analyzed as a single dataset and submitted to the database as a single dataset.
The examples above are datasets predefined in the database. New aggregate datasets could be assembled for particular studies, for example all the pollen samples for a given time slice for a given geographic region.