Late Cenozoic sedimentation and metal deposition in the North Pacific

Saved in:
Online Access: Get full text
doi: 10.1016/0016-7037(85)90160-7
Authors:Kadko, David
Author Affiliations:Primary:
Oreg. State Univ., Coll. Oceanogr., Corvallis, WA, United States
Volume Title:Geochimica et Cosmochimica Acta
Source:Geochimica et Cosmochimica Acta, 49(3), p.651-661. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037
Publication Date:1985
Note:In English. 32 refs.; illus. incl. 7 tables, sketch map
Summary:The major features of sediment chemistry of cores from the North Pacific apparently vary in a fairly uniform and systematic manner, and these variations are consistent with Cainozoic plate movement. Elements with a significant authigenic component (e.g. Mn, Co, Cu, Ni) display high concentrations at depth in cores that correspond with the period when the sea-floor, while under the low-productivity, sub-tropical gyre of the N Pacific, accumulated sediment at an extremely slow rate (approx 1 mm/kyr). These concentrations were diluted when the sites experienced an increase in the aeolian mass accumulation rate first brought about by migration into the influence of the westerlies and then, dominantly, by the huge input of wind-blown detritus which corresponded with the onset of Northern Hemisphere glaciation. A comparison of 10Be profiles with the profiles of metal concentrations is used to reveal the occurrence of hiatuses in the sediment column over the past 8 m.y. [C.M.B.H.]
Subjects:Authigenic minerals; Cenozoic; Chemical composition; Clay mineralogy; Cores; Deposition; Geochemistry; MANOP; Metals; Mineral composition; Movement; Oceanography; Plate tectonics; Sedimentation; Sedimentation rates; Sediments; Upper Cenozoic; North Pacific; Pacific Ocean; Areal studies
Abstract Numbers:86M/0701
Record ID:1985049613
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first