Concept of Precompiled Datasets

For each sample, whole rock or volcanic glass respectively, only one value is selected for a certain element. Multiple analyses of that element are compared by the following rules and only the value with highest priority is selected.

For isotope ratios:

For major elements, rare earth elements, and other trace elements:

  1. the value with highest method priority is selected.
  2. If several values have the highest priority, the publication years are compared. The latest value is selected.

Methods listed below with decreasing priority:

Major elements: Rare earth elements: Other trace elements: