海洋火山岛和它们的热点轨迹对于地质学家尤其有用，因为它们记录了过去的板块在固定地点之上的位置。
The oceanic volcanic islands and their hot-spot trails are thus especially useful for geologists because they record the past locations of the plate over a fixed source.
地图显示了这个地点的位置。
赫拉斯盆地是古老火星海洋位置的另一个候选地点，据测量，其跨度大约为3000公里，并且其底部位于盆地边缘下方接近9公里的位置。
The Hellas Basin, which measures some 3,000 kilometers across and has a floor that lies nearly 9 kilometers below the basin's rim, is another candidate for an ancient Martian sea.
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