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Rainbow is located on a massif at 2,275–2,335 m (7,464–7,661 ft) depth, shared with two fossil (mostly inactive) vent sites Ghost City and Clamstone. [2] As a slow-spreading ridge at approximately 2.2 cm/yr, extensive faulting has uplifted gabbro and peridotite and exposed ultramafic rock to cold seawater. [6]
A relief map of the Azores Triple Fault region and southern bathymetric zone. The hydrothermal vents and seamounts of the Azores (Portuguese: fontes hidrotermais e montes submarinos dos Açores) are a series of Atlantic seamounts and hydrothermal vents that are part of the Mid-Atlantic Ridge system, giving rise to the archipelago and bathymetric region of the Azores.
Consequently, many of the Medieval maps and charts that showed the Ocean Sea (the Atlantic Ocean) identified an island (or islands) represented in different positions or forms. The island of Brasil and/or Antillia (from the Brendan context) and the island of Sete Cidades, were usual geographic references that persisted in the proto-geography of ...
1584 map of the Azores Islands Portugal fell into a dynastic crisis following the death of Cardinal-King Henry of Portugal in 1580. Of the various claimants to the crown, the most powerful was king Phillip II of Spain , who justified his rights to the Portuguese throne by the fact that his mother was a Portuguese royal princess, his maternal ...
The Azores hotspot is marked 1 on map. The Azores hotspot is a volcanic hotspot in the Northern Atlantic Ocean. The Azores is relatively young and is associated with a bathymetric swell, a gravity anomaly and ocean island basalt geochemistry. [1] The Azores hotspot lies just east of the Mid-Atlantic Ridge [2]
The Azores temperate mixed forests is a temperate broadleaf and mixed forests ecoregion of southwestern Europe. It encompasses the Azores archipelago in the Atlantic Ocean. These volcanic islands are an autonomous region of Portugal , and lie 1500 km west of the Portuguese mainland.
The Condor Seamount is a submarine mountain located at 17 kilometres (11 mi) west-southwest of Faial Island in the Azores.It is approximately 1,800 metres (5,900 ft) high, 39 kilometres (24 mi) long and 23 kilometres (14 mi) wide, stretching from a depth of 185 metres (607 ft) up to 2,003 metres (6,572 ft).
Obsidian has also been found in Gilat, a site in the western Negev in Israel. Eight obsidian artifacts dating to the Chalcolithic Age found at this site were traced to obsidian sources in Anatolia. Neutron activation analysis (NAA) on the obsidian found at this site helped to reveal trade routes and exchange networks previously unknown. [52]