Publication Date:
2023-08-28
Description:
Two consecutive drilling legs (Legs 59 and 60) were assigned to drill an east-west transect of sites along latitude 18°N, from the Mariana Basin of the Pacific Ocean to the oldest inactive island arcs and back-arc spreading basins of the Philippine Sea. The western (older, inactive) half of this transect (Philippine Sea, Palau-Kyushu Ridge, Parece Vela Basin, and the West Mariana Ridge-Sites 447-451) was drilled during Leg 59. The objective of Leg 60 was to sample the tectonically active eastern portion of the transect in a closely spaced series of holes across the presently opening back-arc basin (Mariana Trough, Site Survey Target SP-4: Sites 453-456), the Mariana arc itself (Site Survey Target SP-3b: Site 457), the Mariana fore-arc region (Site Survey Target SP-3, Sites 458 and 459), and deep within the Mariana Trench (Site Survey Target SP-2: Sites 460 and 461). In addition, one site (Site Survey Target SP-1: Site 452) was drilled on the Pacific plate seaward of the trench to obtain a reference section of sediments and oceanic crust being delivered to the trench.
Keywords:
60-452; 60-452A; 60-453; 60-454; 60-454A; 60-456; 60-456A; 60-458; 60-459B; 60-460; 60-460A; 60-461; 60-461A; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; Glomar Challenger; Identification; Leg60; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific/BASIN; North Pacific/SEDIMENT POND; North Pacific/TRENCH; Position; Quantity of deposit; Sample code/label; Sediment type; Size; Substrate type; Visual description
Type:
Dataset
Format:
text/tab-separated-values, 555 data points
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