Brown Peak is a stratovolcano and the highest point of the Balleny Islands. It is situated on the northern part of Sturge Island.
Sturge Island is one of the three main islands in the uninhabited Balleny Islands group located in the Southern Ocean. It lies 25 km (16 mi) southeast of Buckle Island and 95 km (59 mi) north-east of Belousov Point on the Antarctic mainland. The island, in Oates Land, also forms part of the Ross Dependency, claimed by New Zealand.
Peter I Island is an uninhabited volcanic island in the Bellingshausen Sea, 450 kilometres (240 nmi) from continental Antarctica. It is claimed as a dependency of Norway and, along with Bouvet Island and Queen Maud Land, composes one of the three Norwegian dependent territories in the Antarctic and Subantarctic. The island measures approximately 11 by 19 kilometres, with an area of 156 km2 (60 sq mi); its highest point is the ultra-prominent, 1,640-metre-tall (5,380 ft) Lars Christensen Peak. Nearly all the island is covered by a glacier, and it is surrounded most of the year by pack ice, making it inaccessible during these times. There is little vertebrate animal life on the island, apart from some seabirds and seals.
The Ring of Fire is a tectonic belt of volcanoes and earthquakes.
Kamaʻehuakanaloa Seamount is an active submarine volcano about 22 mi (35 km) off the southeast coast of the island of Hawaii. The top of the seamount is about 3,200 ft (975 m) below sea level. This seamount is on the flank of Mauna Loa, the largest active subaerial shield volcano on Earth. Kamaʻehuakanaloa is the newest volcano in the Hawaiian–Emperor seamount chain, a string of volcanoes that stretches about 3,900 mi (6,200 km) northwest of Kamaʻehuakanaloa. Unlike most active volcanoes in the Pacific Ocean that make up the active plate margins on the Pacific Ring of Fire, Kamaʻehuakanaloa and the other volcanoes of the Hawaiian–Emperor seamount chain are hotspot volcanoes and formed well away from the nearest plate boundary. Volcanoes in the Hawaiian Islands arise from the Hawaii hotspot, and as the youngest volcano in the chain, Kamaʻehuakanaloa is the only Hawaiian volcano in the deep submarine preshield stage of development.
Vindication Island is a small uninhabited island of the Candlemas Islands in the South Sandwich Islands. It is one of about a dozen islands that make up the South Sandwich island arc, a chain of volcanoes in the Southern Ocean that was discovered in 1775 by James Cook. The volcanism is caused by the subduction of the South American Plate beneath the Sandwich Plate.
The New Zealand Subantarctic Islands comprise the five southernmost groups of the New Zealand outlying islands. They are collectively designated as a UNESCO World Heritage Site.
Bridgeman Island is one of the South Shetland Islands in Antarctica. It is an almost circular, volcanic island marked by steep sides, measuring 900 by 600 metres with a maximum elevation of 240 m (787 ft) high, lying 45 kilometres (28 mi) east of King George Island.
Buckle Island is one of the three main islands in the uninhabited Balleny Islands group located in the Southern Ocean. It lies 25 km (16 mi) north-west of Sturge Island and 8 km (5 mi) south-east of Young Island, some 110 km (68 mi) north-north-east of Belousov Point on the Antarctic mainland. The island forms some parts of the Ross Dependency, claimed by New Zealand.
Young Island is the northernmost and westernmost of the three main islands in the uninhabited Balleny Islands group located in the Southern Ocean. It lies 8 kilometres (5.0 mi) northwest of Buckle Island, some 115 kilometres (71 mi) north-northeast of Belousov Point on the Antarctic mainland.
Penguin Island is one of the smaller of the South Shetland Islands of Antarctica.
Sabrina Island is the largest of three small islets lying 1.5 km (0.93 mi) south of Buckle Island in the Balleny Islands of Antarctica and are part of New Zealand's Ross Dependency.
Two Hummock Island is an ice-covered island, 5 nautical miles long in a north–south direction, conspicuous for its two rocky summits 670 metres (2,200 ft) high, lying 5 nautical miles southeast of Liège Island in the Palmer Archipelago.
Astrolabe Island is an island 3 nautical miles long, lying in the Bransfield Strait 14 nautical miles northwest of Cape Ducorps, Trinity Peninsula in Antarctica.
Orca Seamount is a seamount near King George Island in Antarctica, in the Bransfield Strait. While it is inactive, last volcanic activity at Orca Seamount is judged to have occurred in the recent past as there are temperature anomalies in the seawater around the seamount. Thermophilic and hyperthermophilic microorganisms have been found at the seamount.
Borradaile Island is one of the Balleny Islands. It was the site of the first landing south of the Antarctic Circle, and features the "remarkable pinnacle" called Beale Pinnacle, near Cape Beale on its south-eastern coast, and Cape Scoresby on its north-western coast.
Sjögren Glacier is a glacier 15 nautical miles long in the south part of Trinity Peninsula, Antarctica. It flows southeast from Detroit Plateau to the south side of Mount Wild, where it enters Prince Gustav Channel.
In the afternoon of Wednesday 25 March 1998, a very large magnitude 8.1 earthquake struck a remote area of the Southern Ocean. Its epicentre was located roughly 450 km (280 mi) north of George V Land and roughly 700 km (435 mi) northwest of the Balleny Islands in Antarctica. Due to the remote location of the earthquake, there were no reports of anyone feeling any shaking or any damage being caused. The event was a complex intraplate earthquake within the Antarctic Plate. To date it is the largest recorded earthquake in Antarctica, and is the largest recorded earthquake to have been caused by post-glacial rebound. The earthquake occurred in an area which previously had very little seismic activity, and so such a large event was unprecedented in the seismic record.
Saunders Island is a crescent-shaped island lying between Candlemas Island and Montagu Island in the South Sandwich Islands, a British Overseas Territory in the southern Atlantic Ocean.
Montagu Island is the largest of the South Sandwich Islands, located in the Scotia Sea off the coast of Antarctica. Almost entirely ice-covered with only sparse rocky outcrops, Montagu consists of a large caldera with a large parasitic cone, Mount Oceanite. Several secondary volcanic cones have formed in the caldera, including Mount Belinda.
