The Endeavour Segment of the Juan de Fuca Ridge is well known for its abundance of hydrothermal vents and chimneys. One‐meter scale multibeam mapping data collected by an autonomous undersea vehicle revealed 572 chimneys along the central 14 km of the segment, although only 47 are named and known to be active. Hydrothermal deposits are restricted to the axial graben and the near‐rims of the graben above a seismically mapped axial magma lens. The sparse eruptive activity on the segment during the last 4,300 years has not buried inactive chimneys, as occurs at more magmatically robust mid‐ocean ridges.

中文翻译：

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奋进段的热液烟囱分布，胡安·德富卡岭

胡安德富卡海岭的奋进段以其丰富的热液喷口和烟囱而闻名。由自动海底飞行器收集的一米级多光束测绘数据显示，沿该段中央14 km处有572个烟囱，尽管只有47个被命名并已知处于活动状态。热液沉积物仅限于轴向地en以及在地震测绘的轴向岩浆透镜上方的地en的近缘。在过去的4,300年中，该段的稀疏喷发活动并未掩盖不活动的烟囱，就像在岩浆更坚固的中海脊中发生的那样。