I have the exact same problem. I have shards spawning all over the place, and it has nothing to do with research. In fact, at one point, I had a Lost Library get replaced with a shard. It was weird because the Lost Library image was on the map, and some game elements thought it was still a lost library (like the exclamation mark that told me I could build on the Lost Library), but whenever I hovered over the tile, it said "Water shard".
I could never build the Lost Library, but I did finally build on the Water Shard. At that point, the image changed to a proper Water Shard. I haven't researched any of the Lost Resource techs, and I was seeing this happen within the first twenty turns anyway, so I think research has nothing to do with it.
As far as some of the research comments above, I don't think everyone researching something makes any difference. I've read that it's only the HIGHEST tech among all players that applies to monsters/etc spawning. Now whether it's working the way it's supposed to is another question.
As to the Lost Resources techs, does that open up the resources to everyone? That doesn't make any sense at all. What's the point in researching "secret" or "hidden" resources if it opens them up for everyone?