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The relatively narrow trough trends east-northeast to west-southwest and has a maximum depth of 7,686 metres (25,217 ft). Within the trough is a slowly spreading north–south ridge which may be the result of an offset or gap of approximately 420 kilometres (260 mi) along the main fault trace.
In July 1880 George S. Blake under the command of Commander John R. Bartlett, [a] U.S.N., was working with sounding gear designed by Lieutenant Commander Charles Dwight Sigsbee in cooperation with Alexander Agassiz, who collected biological samples and examined the Gulf Stream running eastward from Cape Romain when, in taking frequent soundings eastward, "depths on this line were unexpectedly ...
The lowest (from surface) artificially made point with open sky may be the Bingham Canyon Open Pit Copper Mine, Utah, United States, at a depth of 1,200 m (3,900 ft) below surface level. The lowest point underwater is the 10,685 m (35,056 ft)-deep (as measured from the subsea wellhead ) oil and gas well drilled on the Tiber Oil Field in the ...
Topography of Zealandia, outlined in pink.The linear ridges running north-northeast (Colville to the west and Kermadec to the east, separated by the Havre Trough and Lau Basin) and southwest (the Resolution Ridge System) away from New Zealand are not considered part of Zealandia, nor are Australia (left), Vanuatu, or Fiji (top centre).
This list of deepest mines includes operational and non-operational mines that are at least 2,212 m (7,257 ft), which is the depth of Veryovkina Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
This list of deepest caves includes the deepest known natural caves according to maximum surveyed depth as of 2024. The depth value is measured from the highest to the lowest accessible cave point. The depth value is measured from the highest to the lowest accessible cave point.
The Kermadec Trench is one of Earth's deepest oceanic trenches, reaching a depth of 10,047 metres (32,963 ft). [3] Formed by the subduction of the Pacific Plate under the Indo-Australian Plate, it runs parallel with and to the east of the Kermadec Ridge and island arc. The Tonga Trench marks the continuation of subduction to the north.
The north side of the trench slopes 3°–4° and the south side 1°–4°. [4] The deepest part of the Aleutian trench has been measured at 7,822 metres (25,663 ft) at 51.21°N, 174.83°E., [5] located about 145 kilometres (90 mi) SSW of Buldir Island.