- UID
- 52498
- 热情
- 48441
- 人气
- 59262
- 主题
- 203
- 帖子
- 47997
- 精华
- 24
- 积分
- 78357
- 分享
- 0
- 记录
- 0
- 相册
- 1
- 好友
- 9
- 日志
- 1
- 在线时间
- 35799 小时
- 注册时间
- 2005-10-11
- 阅读权限
- 30
- 最后登录
- 2025-7-30
    
升级   0% - UID
- 52498
- 热情
- 48441
- 人气
- 59262
- 主题
- 203
- 帖子
- 47997
- 精华
- 24
- 积分
- 78357
- 阅读权限
- 30
- 注册时间
- 2005-10-11
|
The Auckland Islands lie 360 kilometres (220 mi) south of Stewart Island, and 465 kilometres (290 mi) from the South Island port of Bluff, between the latitudes 50° 30' and 50° 55' S and longitudes 165° 50' and 166° 20' E. They include Auckland Island, Adams Island, Enderby Island, Disappointment Island, Ewing Island, Rose Island, Dundas Island and Green Island, with a combined area of 625 square kilometres (240 sq mi). The islands are close to each other, separated by narrow channels, and the coastline is rugged, with numerous deep inlets.
Auckland Island, the main island, has an approximate land area of 510 km2 (197 sq mi), and a length of 42 km (26 mi). It is notable for its steep cliffs and rugged terrain, which rises to over 600 m (1,969 ft). Prominent peaks include Cavern Peak (650 m or 2,133 ft), Mount Raynal (635 m or 2,083 ft), Mount D'Urville (630 m or 2,067 ft), Mount Easton (610 m or 2,001 ft), and the Tower of Babel (550 m or 1,804 ft). The southern end of the island broadens to a width of 26 km (16 mi). Here, the narrow channel of Carnley Harbour (the Adams Straits on some maps) separates the main island from the roughly triangular Adams Island (area approximately 100 km2 or 39 sq mi), which is even more mountainous, reaching a height of 705 m (2,313 ft) at Mount Dick. The channel is the remains of the crater of an extinct volcano, and Adams Island and the southern part of the main island form the crater rim. The main island features many sharply incised inlets, notably Port Ross at the northern end.
The group includes numerous other smaller islands, notably Disappointment Island (10 km or 6.2 mi northwest of the main island) and Enderby Island (1 km or 0.62 mi off the northern tip of the main island), each covering less than 5 km2 (2 sq mi).
Most of the islands originated volcanically, with the archipelago dominated by two 12 million year old Miocene volcanoes, subsequently eroded and dissected.[3] These rest on older volcanic rocks 15-25 million years old with some older granites and fossil-bearing sedimentary rocks from around 100 million years ago.[4]

 |
|