SUBJECT INDEX 



957 



Pelagic sediments — continued 



topographic and teutonic control, 718 ff 



trace-element composition of planktonic 

 organisms, 678 



uranium svibstitution, 684 

 Pendragon Scarp, 286 

 Penmarc'h Point, 283 

 Pennatulids, 459 



Peptides, purines, pyrimidines, polypep- 

 tides, polynucleotides evolution, 858 ff 

 Pernambuco, 318, 321 

 Persian Gulf, 291, 647 

 Perth basin, 298 

 Peru, 228, 585, 728 

 Peru-Chile earthquake sequences, 412 

 Peru-Chile Trench. 419, 422 

 Peru Current, 707 

 Petroleum, 608 ff 

 Phaeodaria, 875 

 Philippine Sea, 250 ff, 366. 414 

 Philippine Trench. 414 ff, 419 ff. 432 

 Phillipsite, 698 ff 

 Phillosilicates, 700 

 Phosphates, 612 ff, 681 ff, 857 ff 

 Phosphorite nodules, 445, 612 

 Phosphorite rock, 682 



Phosphorus in sediments, 601, 659, 677, 681 

 Photography : see Underwater photography 

 Photosynthesis, 584 ff, 614, 851 ff 

 Physical properties of marine sediments, 794 



compressional wave velocities and rela- 

 tions, 799 ff. 804 ff, 806 ff, 811 ff 



conclusions, 813 ff 



critical angle reflections, 810 



density, porosity, average grain density, 

 798 ff, 803 ff 



impedance values, 810 



methods of measurement, 798 ff 



Poisson's ratio, 807 ff 



relationships between observables, 795 ff 



shear-wave velocities, 799 ff, 807 ff 



sub-bottom reflections, 810 



summary of results, 803 ff 



thermal conductivity, 802 ff, 809 ff 



values measured other than the above, 

 809 ff 

 Phytoplankton, 597, 708 

 Pierre Shale, 810 

 Prnger, 475 



Pioneer Fault, 195 ff, 198 

 Piston corer, 889, 920 

 Plagioclase feldspar, 695 

 Planetary atmospheres, 847 

 Planets, life on other, 862 



"Planktonic" defined, 866 

 Planktonic Foraminifera, 871 ff 



coiling directions, 833, 839 



frequency-to-weight ratio, 833 



species distribution, 679 

 Planktonic micro-organisms, 866 

 Planktonic paleotemperature data, 713 

 Plants, classification, 868 

 Plato Seamount, 320 

 Pleistocene climatic changes and deep-sea 



sediments, 832 ff 

 Pleistocene record, The, 888 



analytical techniques, 903 



chronology, 900 ff, 916 ff 



climatic changes and deep-sea sediments, 

 832 ff 



continental stratigraphy, 890 ff, 916 ff 



deep-sea stratigraphy, 903 ff 



lakes, 892 



marine stratigraphy, 901 ff 



oxygen-isotopic analysis, 917 ff 



pluvial climates, 892 



sediment character, 903 ff 



stratigraphic column for Netherlands- 

 Eastern England Region, 893 



stratigraphic column for Northern Alps 

 Region, 893 



stratigraphic record, 910 ff 



summary of chapter, 919 ff 



temperatures, 896 ff 

 Pliocene flora, 891 



Pliocene-Pleistocene boundary, 889, 893, 902 

 Pohai, Gulf of, 647 

 Poitou, 635 

 Pollen analysis, 920 

 Porcupine Abyssal Plain, Bank, Seabight, 



281, 286, 304 

 Porous media, physical properties, 795 

 Porphyrins, 596 ff, 857 ff 

 Portugal, 292, 320 

 Posidoniae, 641 



Potassium-argon datmg, 269, 273, 406 

 Potassiimi isotope '^^K, 888 

 Po Valley, 902 



Prandtl-Karman theory of flow, 520 

 Pratt-Welker guyots, 373 

 Pre-amplifiers, 27 ff, 30, 53 

 Precision Depth Recorder, 235, 312 ff, 353, 



359 ff, 369, 405, 419 ff, 480, 769 

 Preserved record, The : see Paleontology of 



pelagic sediments 

 Pressure-gauge depth measurements, 416 

 Pre-Toglian strata, 893 

 Prince Edward Island, 276, 366 



