A newly developed machine-learning system has successfully identified around 1,750 previously undetected microquakes, delineating the boundary of the Yakutat microplate as it subducts beneath the North American plate in southern Alaska. This discovery, detailed in a study published in The Seismic Record by Meghan Miller and her team at the Australian National University, provides a clearer understanding of the tectonic interactions in this geologically complex region. The microplate is situated in a 'tectonic traffic jam,' influencing earthquake frequency and volcanic activity. The identified seismic band stretches approximately 155 miles, offering a more precise mapping of the Yakutat plate's edge compared to earlier studies. The research indicates that stress from the collision between the Yakutat microplate and the North American plate could extend to the Denali Fault, potentially affecting seismic activity in the area. The researchers plan to further investigate historical seismic data to enhance their understanding of the region's tectonic structure.