Table 5. Stratigraphic distribution of radiolarians at Hole 1077A.
Age
Zone
Core, section,
interval
Depth
(mbsf)
Abundance Preservation Cycladophora cornutoides Cycladophora davisiana Didymocyrtis tetrathalamus tetrathalamus Eucyrtidium acuminatum Eucyrtidium anomalum Eucyrtidium teuscheri Lamprocyclas hannai Lamprocyrtis nigriniae Phormostichoartus corbula Pterocanium praetextum eucolpum Pterocanium trilobum Saturnalis circularis Spongaster tetras tetras Theocorythium trachelium trachelium Acanthodesmia viniculata Eucyrtidium calvertense Pterocanium praetextum praetextum Amphirhopalum ypsilon Collosphaera tuberosa Axoprunum angelinum Anthocyrtidium angulare Lamprocyrtis heteroporos Lamprocyrtis neoheteroporos


175-1077A-

























Quaternary B. invaginata-C. tuberosa 1H-CC 4.93 A G P P P P P P P + + + P P P P








Quaternary B. invaginata-C. tuberosa 2H-CC 10.78 A G P P P + P P P P
P P P P P P + +





Quaternary B. invaginata-C. tuberosa 3H-CC 24.09 A G P P P P + + P P
P P P
P

P





Quaternary B. invaginata-C. tuberosa 4H-CC 33.85 A G P P P P P P P P + P P P P
P +
P P



Quaternary B. invaginata-C. tuberosa 5H-CC 43.39 A G + P P

P P P + P P P
P
P






Quaternary B. invaginata-C. tuberosa 6H-CC 52.93 C G P P + P +
P
+ P P P P P P
+ P




Quaternary B. invaginata-C. tuberosa 7H-CC 62.55 A G P P P P P + P P P P P P P
P +






Pleistocene A. angelinum-A. ypsilon 8H-CC 72.22 A G P P P P + P P P
P P + P
+ P


P


Pleistocene A. angelinum-A. ypsilon 9H-CC 80.89 A G P P P

P P P P P P P P

P


P


Pleistocene A. angelinum-A. ypsilon 10H-CC 91.06 C G P P P

P P P

P +

+ P


P


Pleistocene A. angelinum-A. ypsilon 11H-CC 100.46 A G P P P

P P P
P P + P
+ +


P


Pleistocene A. angelinum-A. ypsilon 12H-CC 110.14 A G P P P P
P P P
P P P P
P P
P




Pleistocene A. angelinum-A. ypsilon 13H-CC 119.47 A G P P P P
+ P
+
P P +

P


+


Pleistocene A. angelinum-A. ypsilon 14H-CC 127.47 A G P P P P
P P

P P P




P
P


Pleistocene A. angelinum-A. ypsilon 15H-CC 138.67 A G P P P P
P P

+ P + P
P P
P
P


Pleistocene A. angelinum-A. ypsilon 16H-CC 148.28 A G P P P P P P P

P P P P
+ P


+ P

Pleistocene A. angelinum-A. ypsilon 17H-CC 157.55 A G + P P P + P P
P P P P


P +

P
+
Pleistocene A. angelinum-A. ypsilon 18H-CC 166.73 A G P P P P P P P
P P P P

+ P
P
P


Pleistocene A. angulare 19H-CC 176.39 A G P P P P
P P
P P P + +
P P


P

P
Pleistocene A. angulare 20H-CC 185.93 C G P P P P P P P
P
P P +
P +


P
+ P
Pleistocene A. angulare 21H-CC 195.49 C G P P P P + P P
P +



+



+

P
Pleistocene A. angulare 22H-CC 205.01 A G P P P P
P P
P P + P

P P


+
+ P

Notes: Occurrence is indicated by P = present and + = one specimen per slide. Abundance: A = abundant and C = common. Preservation: G = good. B. invaginata = Buccinosphaera invaginata; C. tuberosa = Collosphaera tuberosa; A. angelinum = Axoprunum angelinum; A. ypsilon = Amphirhopalum ypsilon; A. angulare = Anthocyrtidium angulare.