|Bio-lithology of northeast Pacific surface sediments|
Nayudu, Y.R.; Enbysk, B.J. (1964). Bio-lithology of northeast Pacific surface sediments. Mar. Geol. 2(4): 310-342
In: Marine Geology. Elsevier: Amsterdam. ISSN 0025-3227, more
|Authors|| || Top |
- Nayudu, Y.R.
- Enbysk, B.J.
Seven bio-lithologic areas based on the relative abundances of diatoms, radiolarians, planktonic Foraminifera and lithic elements are defined for northeast Pacific surface sediments from the study of more than 200 gravity cores. These areas are: (1) northern terrigenous sediments with < 20% diatoms; (2) diatom-rich sediments with > 20% diatoms; (3) glacial marine remnant with diatoms; (4) Katmai volcanic ash; (5) Radiolaria-rich or biologically barren sediments; (6) Globigerina-rich sediments; (7) terrigenous sediments of outer shelf, slope and Great Trough, southern region. Color and benthonic foraminiferal characteristics are included in descriptions of the areas. Interrelated factors of terrigenous sediment supply, abundance of benthonic organisms, preservation of biogenous elements and plankton supply are evaluated. Topography and the major ocean currents of the region seem most responsible for the sedimentation patterns observed.