Neumayer Channel (Coordinates: ) is a channel 16 miles (26 km) long in a NE-SW direction and about 1.5 miles (2.4 km) wide, separating Anvers Island from Wiencke Island and Doumer Island, in the Palmer Archipelago. The southwest entrance to this channel was seen by Eduard Dallmann, leader of the German 1873-74 expedition, who named it Roosen Channel. The Belgian Antarctic Expedition, 1897–99, under Gerlache, sailed through the channel and named it for Georg von Neumayer. The second name has been approved because of more general usage.
Neumayer Channel is known for its majestic cliffs, an attraction for tourists who come to the region. It is said to be like a maze with no visible exits because of its inverted S-shape. Its entrance and exits both have sharp bends.
The Neumayer Channel Tectonic Block is bounded by the Neumayer Fault and the Fournier Fault, which are parallel SW-NE trending strike-slip faults. The block consists of an Early Tertiary granite-granodiorite pluton intruded by a system of Early of Late Tertiary vertical dykes. These intrusive rocks are overlain by basaltic-trachyandesitic lavas and tuffs.
- Birkenmajer, Krzysztof (1999). The Tectonic Structure of Gerlache Strait, West Antarctica, in Polish Polar Studies XXVI Polar Symposium (PDF). Lublin: Polish Polar Studies. pp. 45–50. Retrieved 3 January 2020.
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