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Lost City Hydrothermal Field

A field of pale carbonate chimneys up to 60 metres tall on the Atlantis Massif in the mid-Atlantic, found in December 2000. Unlike black smokers it vents warm, alkaline water from reactions between seawater and mantle rock, making methane and hydrogen without life: a prime place to study how life may have begun.

Dated events and their evidence

• 2000 CE mainstream
  4 December: Lost City is first identified with Alvin and the ROV Argo II on cruise AT03-60 of the research ship Atlantis source
• 2003 CE mainstream
  a second 32-day voyage maps the field in high resolution with Alvin and the autonomous vehicle ABE source
• 2004 CE mainstream
  Integrated Ocean Drilling Program Expedition 304 drills holes into the Atlantis Massif to recover cores source

Where

30.1167° N, 42.1167° W

The point is Wikipedia's position for the field on the Atlantis Massif, near where the Atlantis Transform Fault meets the Mid-Atlantic Ridge.

Sources

• https://en.wikipedia.org/wiki/Lost_City_Hydrothermal_Field
• https://doi.org/10.1038/35084000

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