Before the Gates
It's reasonably common knowledge that Earth Magic has been in use since time immemorial, appearing in the earliest records of Hysilens ruins; in those ages it was used by the fox-folk to shape worlds in a way that suited them, as well as a potent force multiplication magic for combat - as earthen golems and earthworks were a vital multiplier to combat in history.
It's believed that both earthen golems and magical earthworks were used in the early history of the sector, as well, but the knowledge of these techniques vanished over time.
Early History
The early modern period was set out by a
regression in knowledge generally; as societies took to space, once-vital parts of earth magic - such as the earthworks - faded from active use. Others, like the magic of golem crafting, all but vanished around the time of the AURA War, for unknown reasons.
The
Shard Ritual had mixed results for earth magic; earth mages become ever more plentiful, but their evolving art meant that yet more of their knowledge was lost to time, including their planetary senses for handling the search for minerals and metals, replaced by technological mediums and otherwise rendered obsolete.
Modern History
Nowadays, there's something of an... earthen renaissance underway, with active attempts to recover the long-forgotten knowledge of the magic, for posterity and archival if nothing else. Progress on this front has been glacially slow, as leads on ancient earth magic are... hard to find, to put it mildly.
Aldrin History
Contrasted to the rest of the cluster, Aldrin's earthen magic never faded from planetside relevance, golem magic, magical earthworks and metal manipulation remain a potent set of abilities used by Aldrin
Terramancers to this day, especially with it being a very popular form of magic.