Really cool submission that has more depth than it seemed to at first. The graphics and music are top notch. I could actually see myself coming back and playing this after the voting period if there was some sort of goal other than a new high score. Fantastic submission to the jam.
Also, I noticed in one of your replies you mentioned that being able to put two artifacts in the same row at the same time is a bug, but I think that it actually has pretty cool implications as a feature. Near the end of the game, when you have only a couple of rows open, you can put junk items that don't match color or type at the far end of the row and quickly drain your savings to cycle your available artifacts until you find one that matches. It essentially gives an optional time limit as those archeologists will eventually get to the artifacts and run out of energy for little in the way of points if you're not fast enough.