Little is known about the eruptive history of Heart Peaks because it has not been studied in detail by scientists. The exact age of Heart Peaks is not known, but its first volcanic phase occurred during the Neogene period (between 23 and 2.5 million years ago). The variety of volcanic deposits at Heart Peaks indicates that it has a history of producing not only fluid and passive basaltic lava flows, but also more silica-rich trachyte and rhyolitic lavas and explosive eruptions. Phreatic breccias are found at the volcano, providing evidence that phreatic eruptions have occurred at least once throughout its eruptive history. Features created by subglacial eruptions are also present. The latest volcanic phase at Heart Peaks is largely Pleistocene (between 2.5 million and 10,000 years ago) in age and late-stage Holocene (10,000 years ago to present) activity is uncertain. This is partly because it is unknown whether Holocene volcanic rocks exist at the volcano. Nevertheless, the last eruption at Heart Peaks is unknown.