Collaborative: Investigation of a new class of hydrothermal systems: The Lost City Hydrothermal Field: A Peridotite-hosted, Off-axis System at 30 degree N on the Mid-Atlantic Ridge

合作：调查一类新型热液系统：失落之城热液场：位于大西洋中脊北纬 30 度的橄榄岩离轴系统

• 批准号: 0136816
• 负责人: Jeffrey Karson
• 金额: $ 31.39万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-03-01 至 2006-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0136816&HistoricalAwards=false
• 关键词: Collaborative; Investigation; new; class; hydrothermal

This is an investigation of the recently discovered Lost City Vent Field, atop the dome-like Atlantis Massif at 30 degrees north on the Mid-Atlantic Ridge. This field is different from all other known seafloor hydrothermal fields in that it is located on 1.5 Ma crust, is dominated by steep-sided carbonate chimneys, and is underlain by significiant exposures of serpentinized peridotite. A detailed mapping and sampling program will be conducted to address the following: the tectonic and geologic controls that focus venting, the chemical and isotopic compositions of the vent structures and fluids, the indicence and phylogentic diversity of microorganisms, and whether macrofauna exist.

这是对最近发现的迷城通风场的调查，位于大西洋中脊以北30度的圆顶状亚特兰蒂斯地块之上。 该油气田不同于所有已知的海底热液油气田，因为它位于1.5Ma的地壳上，以陡峭的碳酸盐烟囱为主，下伏有显著的蛇纹化橄榄岩出露。 将进行详细的绘图和取样方案，以解决以下问题：侧重于喷口的构造和地质控制、喷口结构和流体的化学和同位素组成、微生物的指示性和共生多样性以及是否存在大型动物。