The Earthquake power from Earth Control set (Controller, haven't tested with dominator) is logged in the Combat chat window as "Ice Slick".
I noticed while doing some proc testing
14:12:08] You activated the Earthquake power.
[14:12:09] Ice Slick: You hit Werfer Jaeger with your Explosive Strike: Chance for Smashing Damage for 146.04 points of Smashing damage.
[14:12:12] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:12] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:12] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:13] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:14] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:16] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:16] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:18] Ice Slick: You knock Werfer Jaeger off their feet with your Earthquake!
[14:12:19] Ice Slick: You hit Cuirasseur with your Touch of Lady Grey: Chance for Negative Energy Damage for 126.99 points of Negative Energy damage.
[14:12:21] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:23] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:25] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:29] Ice Slick: You hit Cuirasseur with your Touch of Lady Grey: Chance for Negative Energy Damage for 126.99 points of Negative Energy damage.
[14:12:30] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:35] Ice Slick: You knock Cuirasseur off their feet with your Earthquake!
[14:12:47] Earthquake is recharged.