Sedimentary characteristics and cobalt-rich crust resource potential of Weijia Guyot in the Western Pacific Ocean

Based on the subbottom profiles, DSDP drilling and related studies, the authors studied sedimentary environment, deposition history, sediment thickness and cobalt-rich crust resource potential of Weijia Guyot in the Western Pacific Ocean. The main conclusions are as follows:there are mainly three types of reflection characteristics on the top of the Weijia Guyot, which represent three sedimentary units; there are three depositional centers and four depositional rarefaction areas on the top of Weijia Guyot, and dcpositional rarefaction or basement outcrop areas have good crust metallogcnic conditions; the depositional anomaly area in the eastern center was related to the second volcanic activity during Eocene. This study has a very important guiding significance for the future exploration of cobalt-rich crust resources on the Weijia Guyot.