Sentences with phrase «between tsunami deposits»
The oldest tsunami sand layer was deposited approximately 1700 years ago, and the average interval between tsunami deposits is 300 - 340 years.
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The network spans the Juan de Fuca plate, which sits between the Pacific and the North American plates and hosts earthquakes and tsunamis, giant clams and whale pods, along with hydrothermal vents and frozen methane deposits.
Yet the cave record lacks tsunamis in a 1900 - year interval between about 5400 years ago — when a thick tsunami deposit was laid down — and about 3300 years ago.