Bukry, David (1983): (Figure 1) Silicoflagellates at DSDP Hole 69-504 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816237, Supplement to: Bukry, D (1983): Upper Cenozoic silicoflagellates from offshore Ecuador, Deep Sea Drilling Project Site 504. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 321-342, https://doi.org/10.2973/dsdp.proc.69.113.1983
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Abstract:
Diverse and abundant late Miocene to Pleistocene silicoflagellates at DSDP Site 504 can be correlated by tropical biostratigraphic zones and relative paleotemperature values to eastern tropical Pacific reference site DSDP 503A farther to the west. Early Pliocene assemblages, which were poorly known until now, are present and can be correlated locally between DSDP Holes 504, 503A, and 495, using species events associated with the new Dictyocha pulchella Subzone and Dictyocha angulata Subzone. Silicoflagellate relative paleotemperature values show major warming at 4.7 to 5.0 Ma (Cores 45-48), 3.4 to 3.8 Ma (Cores 32-33), 1.5 to 1.7 Ma (Cores 12-16), and 0.5 to 0.8 Ma (Cores 3-6). Major coolings occurred at 5.0 to 5.1 Ma (Core 51), 3.9 to 4.4 Ma (Cores 38-44), and 1.0 to 1.3 Ma (Cores 8-10). The appearance of Dictyocha longa is proposed to replace the asperoid/fibuloid ratio reversal as the bottom of the Dictyocha fibula Zone, because the non-evolutionary ratio reverses several times in the upper Miocene of Hole 503A, and at least once in Hole 504. Three new Pliocene silicoflagellates are defined: Dictyocha concinna Bukry, n. sp., D. helix Bukry, n. sp., and D. tamarae Bukry, n. sp.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 1.226300 * Longitude: -83.732200
Date/Time Start: 1979-09-20T00:00:00 * Date/Time End: 1979-09-20T00:00:00
Minimum DEPTH, sediment/rock: 22.2 m * Maximum DEPTH, sediment/rock: 234.3 m
Event(s):
69-504 * Latitude: 1.226300 * Longitude: -83.732200 * Date/Time: 1979-09-20T00:00:00 * Elevation: -3460.0 m * Penetration: 237 m * Recovery: 10 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
Comment:
Sediment depth is given in mbsf. #0 = recorded after count; #1 or #<1 = probably a reworked occurrence.
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Sample code/label | Sample label | Bukry, David | DSDP/ODP/IODP sample designation | ||
2 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
3 | Epoch | Epoch | Bukry, David | |||
4 | Silicoflagellate zone | Silicoflagellate zone | Bukry, David | |||
5 | Silicoflagellate zone | Silicoflagellate zone | Bukry, David | Subzone | ||
6 | Dictyocha aculeata | D. aculeata | % | Bukry, David | Counting, silicoflagellates | |
7 | Dictyocha angulata | D. angulata | % | Bukry, David | Counting, silicoflagellates | |
8 | Dictyocha aspera | D. aspera | % | Bukry, David | Counting, silicoflagellates | |
9 | Dictyocha aspera aspera | D. aspera aspera | % | Bukry, David | Counting, silicoflagellates | |
10 | Dictyocha aspera clinata s. ampl. | D. aspera clinata s. ampl. | % | Bukry, David | Counting, silicoflagellates | |
11 | Dictyocha brevispina | D. brevispina | % | Bukry, David | Counting, silicoflagellates | |
12 | Dictyocha brevispina | D. brevispina | % | Bukry, David | Counting, silicoflagellates | Giant asymmetric |
13 | Dictyocha brevispina | D. brevispina | % | Bukry, David | Counting, silicoflagellates | No bar |
14 | Dictyocha calida ampliata | D. calida ampliata | % | Bukry, David | Counting, silicoflagellates | |
15 | Dictyocha calida calida | D. calida calida | % | Bukry, David | Counting, silicoflagellates | |
16 | Dictyocha concavata | D. concavata | % | Bukry, David | Counting, silicoflagellates | #1 = #<1 |
17 | Dictyocha concinna | D. concinna | % | Bukry, David | Counting, silicoflagellates | |
18 | Dictyocha delicata | D. delicata | % | Bukry, David | Counting, silicoflagellates | |
19 | Dictyocha delicata var. bisecta | D. delicata var. bisecta | % | Bukry, David | Counting, silicoflagellates | |
20 | Dictyocha fibula s. ampl. | D. fibula s. ampl. | % | Bukry, David | Counting, silicoflagellates | |
21 | Dictyocha helix | D. helix | % | Bukry, David | Counting, silicoflagellates | |
22 | Dictyocha longa | D. longa | % | Bukry, David | Counting, silicoflagellates | |
23 | Dictyocha longa var. paxilla | D. longa var. paxilla | % | Bukry, David | Counting, silicoflagellates | |
24 | Dictyocha neonautica var. cocosensis | D. neonautica var. cocosensis | % | Bukry, David | Counting, silicoflagellates | |
25 | Dictyocha ornata africana | D. ornata africana | % | Bukry, David | Counting, silicoflagellates | |
26 | Dictyocha perfecta | D. perfecta | % | Bukry, David | Counting, silicoflagellates | #1 = #<1 |
27 | Dictyocha perlaevis flexatella | D. perlaevis flexatella | % | Bukry, David | Counting, silicoflagellates | |
28 | Dictyocha perlaevis perlaevis | D. perlaevis perlaevis | % | Bukry, David | Counting, silicoflagellates | |
29 | Dictyocha perlaevis | D. perlaevis | % | Bukry, David | Counting, silicoflagellates | |
30 | Dictyocha perlaevis perlaevis s. ampl. | D. perlaevis perlaevis s. ampl. | % | Bukry, David | Counting, silicoflagellates | |
31 | Dictyocha pulchella | D. pulchella | % | Bukry, David | Counting, silicoflagellates | |
32 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha aegea |
33 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha aculeata |
34 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha delicata |
35 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha ornata ornata |
36 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha pulchella (angular); #1 = #<1 |
37 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha pumila |
38 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha stapedia aspinosa |
39 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha subaculeata |
40 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha subclinata |
41 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Dictyocha transenna (spined) |
42 | Dictyocha sp. | Dictyocha sp. | % | Bukry, David | Counting, silicoflagellates | sp. cf. Dictyocha angulata |
43 | Dictyocha spp. | Dictyocha spp. | % | Bukry, David | Counting, silicoflagellates | |
44 | Dictyocha spp. | Dictyocha spp. | % | Bukry, David | Counting, silicoflagellates | Indeterminate |
45 | Dictyocha stapedia aspinosa | D. stapedia aspinosa | % | Bukry, David | Counting, silicoflagellates | |
46 | Dictyocha stapedia stapedia | D. stapedia stapedia | % | Bukry, David | Counting, silicoflagellates | |
47 | Dictyocha subaculeata | D. subaculeata | % | Bukry, David | Counting, silicoflagellates | |
48 | Dictyocha tamarae | D. tamarae | % | Bukry, David | Counting, silicoflagellates | |
49 | Dictyocha transenna | D. transenna | % | Bukry, David | Counting, silicoflagellates | |
50 | Dictyocha varia | D. varia | % | Bukry, David | Counting, silicoflagellates | |
51 | Dictyocha vexativa | D. vexativa | % | Bukry, David | Counting, silicoflagellates | |
52 | Distephanus boliviensis | D. boliviensis | % | Bukry, David | Counting, silicoflagellates | # = divided ring |
53 | Distephanus crux bispinosus | D. crux bispinosus | % | Bukry, David | Counting, silicoflagellates | |
54 | Distephanus crux carolae | D. crux carolae | % | Bukry, David | Counting, silicoflagellates | |
55 | Distephanus crux crux s. ampl. | D. crux crux s. ampl. | % | Bukry, David | Counting, silicoflagellates | |
56 | Distephanus major | D. major | % | Bukry, David | Counting, silicoflagellates | |
57 | Distephanus mesophthalmus | D. mesophthalmus | % | Bukry, David | Counting, silicoflagellates | |
58 | Distephanus polyactis | D. polyactis | % | Bukry, David | Counting, silicoflagellates | |
59 | Distephanus quinquangellus | D. quinquangellus | % | Bukry, David | Counting, silicoflagellates | |
60 | Distephanus sp. | Distephanus sp. | % | Bukry, David | Counting, silicoflagellates | sp. A (Bukry, 1979) |
61 | Distephanus sp. | Distephanus sp. | % | Bukry, David | Counting, silicoflagellates | sp. aff. Distephanus mesophthalmus |
62 | Distephanus sp. | Distephanus sp. | % | Bukry, David | Counting, silicoflagellates | sp. cf. Distephanus frugalis |
63 | Distephanus speculum bispicatus | D. speculum bispicatus | % | Bukry, David | Counting, silicoflagellates | |
64 | Distephanus speculum elongatus | D. speculum elongatus | % | Bukry, David | Counting, silicoflagellates | |
65 | Distephanus speculum forma coronata | D. speculum forma coronata | % | Bukry, David | Counting, silicoflagellates | |
66 | Distephanus speculum minutus | D. speculum minutus | % | Bukry, David | Counting, silicoflagellates | |
67 | Distephanus speculum speculum | D. speculum speculum | % | Bukry, David | Counting, silicoflagellates | |
68 | Distephanus speculum tenuis | D. speculum tenuis | % | Bukry, David | Counting, silicoflagellates | |
69 | Distephanus spp. | Distephanus spp. | % | Bukry, David | Counting, silicoflagellates | Cruxoid |
70 | Mesocena circulus | M. circulus | % | Bukry, David | Counting, silicoflagellates | |
71 | Mesocena diodon nodosa | M. diodon nodosa | % | Bukry, David | Counting, silicoflagellates | |
72 | Mesocena quadrangula | M. quadrangula | % | Bukry, David | Counting, silicoflagellates | # = distorted; #1 = #<1 |
73 | Mesocena quadrangula | M. quadrangula | % | Bukry, David | Counting, silicoflagellates | Transennoid |
74 | Mesocena sp. | Mesocena sp. | % | Bukry, David | Counting, silicoflagellates | sp. cf. Mesocena circulus |
75 | Mesocena triodon | M. triodon | % | Bukry, David | Counting, silicoflagellates | |
76 | Octactis pulchra | O. pulchra | % | Bukry, David | Counting, silicoflagellates | |
77 | - | - | Bukry, David | Calculated | relative Paleotemperature | |
78 | Specimen count | Sp count | # | Bukry, David | Counting, silicoflagellates |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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