Hades Project

The Hades Project was an attempt at settling the divisive question of plate tectonics on Ammon. The lack of active volcanoes and a relatively flat surface indicate that no tectonic activity is present today, though deep ocean trenches (e.g., The Deepest Trench: B) and surface features such as Echo Cliffs (specifically the Ammonite Deposition found along the base), suggested a period of fairly active tectonics deep in the geologic past.

Project Overview
The project consisted of installing 48 magnetometers around the deep trenches and ridges of the oceans of Ammon, in order to detect any magnetic anomalies in the Ammonian crust (which would indicate tectonic activity). These magnetometers (dubbed Persephones) were placed by the dive team led by Alice Foggins. However, only 12 were successfully installed before the dive team noticed the reaction of the local Hilschwisp population to the dive team's activites. While not immediately life-threatening, this activity was surprising enough that the project was hastily discontinued (see Postmortem: Hades Project and Incident Report: Hades Project).

Conclusion
The data collected from the persephones that were successfully installed indicate that tectonic activity once was present on Ammon, though the relative paucity of the data resulting from the early abandoment of the project means that basic information, such as the length of the tectonic era, the time since tectonic activity ceased, or the driving mechanisms of these activity (especially given the lack of abundant water to develop shear zones), remains unknown.