Publication Date:
2023-08-28
Description:
Leg 55 was conceived as part of the decade-long experiment to test the kinematic hot-spot hypothesis and several of its more imporant corollaries for the origin of the Hawaiian-Emperor chain. Also of particular importance was the question of whether the Hawaiian hot spot has remained fixed in the mantle. The specific primary objectives of Leg 55, were to determine (1) whether the known increase in the age of the volcanoes on the Hawaiian chain with distance from Kilauea continues northward along the Emperor Seamounts; (2) whether the lavas of the Emperor volcanoes are of the same chemical composition and were erupted in the same sequence as those of Hawaiian volcanoes; (3) the latitude of formation of Suiko Seamount as a test of hot-spot fixity; and (4) whether the Emperor Seamounts were once islands and, if so, to determine their post-volcanic and subsidence history.
Keywords:
55-430; 55-431; 55-431A; 55-432; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; File name; Glomar Challenger; Identification; Leg55; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific/SEDIMENT POND; North Pacific/TERRACE; Position; Quantity of deposit; Sample code/label; Sediment type; Size; Substrate type; Uniform resource locator/link to image; Visual description
Type:
Dataset
Format:
text/tab-separated-values, 196 data points
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