The field bears no trace of glacial erosion on its volcanoes, and reports exist of volcanic activity in 1712, 1820 and 1926.

[4] Since the Paleocene, a transform fault, which bisects the island,[5] has been moving the southern part of Tierra del Fuego[6] eastward along the South America Plate, accompanied by tectonic uplift that persisted into the Holocene except when it was offset by glacial loading effects.

[7] Subduction in that area commenced 17 million years ago, and the Antarctic slab has not sunk deep into the mantle.

[8] Other volcanic activity occurred in the region farther east, on Hardy Peninsula and some surrounding capes and islands during the Miocene;[9] potassium-argon dating has yielded ages of 18 and 21 million years ago.

[14] Dikes outcropping about 5 kilometres (3.1 mi) north from the volcanic field may also be genetically related to it.

[1] Unlike many other volcanoes in the Austral Volcanic Zone, Fueguino is not considered to be a source of widespread tephra deposits.

[1] Such a limited range of composition is typical for Austral Volcanic Zone volcanoes, which only feature andesite and dacite.

In terms of composition, the Fueguino rocks belong to the calc-alkaline series and resemble tholeiites and andesites from primitive volcanic arcs.

[20] It was reported by French captain Josselin Guardin; the volcano was marked on maps as Volcan San Clemente,[21] after Gardin's ship.

[20] These volcanic activities were at first assumed to have occurred in the local Andes mountains, but a geological expedition by Giacomo Bove in 1882 found no evidence of a volcano there;[22] the field itself was accidentally discovered by geologists of SERNAGEOMIN in 1978.

[23] Further activity may have occurred on 3 February 1926, when a ship travelling through the northeastern arm of the Beagle Channel encountered a cloud of ash.

[25] The vegetation of the area belongs to the Magellanic Province,[12] formed by deciduous trees at low altitudes.

[3] Two stages of glaciation have been identified in southern Tierra del Fuego; four more have been found north of the Magellan Strait.