Publication Date:
2023-08-28
Description:
The rate of accumulation of a ferromanganese coating on a fragment of pillow basalt was estimated using a variety of techniques. Unsupported 230 Th activity decrease in the oxide layer, K/A dating of the basalt, fission tracks dating of the glassy layer around the basalt, thickness of the palagonitization rind, and integrated 230 Th activity give ages from approximately 3 x 10-6 years to 5 x 10-3 years. Data suggest that the ferromanganese material formed rapidly (33 mm/10-6 years) and by hydrothermal or volcanic processes.
Keywords:
Alpha spectrometry; DEEPSONDE; Deposit type; DEPTH, sediment/rock; Description; DISTANCE; Distance, maximum; Distance, minimum; DPSN02-D3; Dredge; DRG; Elevation of event; Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Sample ID; Substrate type; Thomas Washington; Thorium-230; Thorium-230, per area; Thorium-230, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; Uranium-234; Uranium-234, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
Type:
Dataset
Format:
text/tab-separated-values, 228 data points
