Merges stratigraphy formations from multiple stratigraphy unit levels into a single column,
where the highest level takes presidence over lower levels.
The intervals will be processed in-order; in other words, how the intervals are sorted.
We sort first by descending level (higher levels take presidence over lower levels), then by
entry depth (processing top-down) and finally by descending update date.
The last sorting criteria is used to ensure consistant behaviour for the edge-cases where formation intervals
overlaps within the same strat unit level.
Merges stratigraphy formations from multiple stratigraphy unit levels into a single column, where the highest level takes presidence over lower levels.
The intervals will be processed in-order; in other words, how the intervals are sorted. We sort first by descending level (higher levels take presidence over lower levels), then by entry depth (processing top-down) and finally by descending update date.
The last sorting criteria is used to ensure consistant behaviour for the edge-cases where formation intervals overlaps within the same strat unit level.