Widmark, Joen G V; Malmgren, Bjorn (1988): Benthic foraminiferal assemblages of Upper Cretaceous sediments from DSDP Hole 74-527 in the Angola Basin, South Atlantic Ocean (Table I, Appendix II) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.687437, Supplement to: Widmark, JGV; Malmgren, B (1988): Differential dissolution of Upper Cretaceous deep-sea benthonic foraminifers from the Angola Basin, South Atlantic Ocean. Marine Micropaleontology, 13(1), 47-78, https://doi.org/10.1016/0377-8398(88)90012-6
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Abstract:
Material from the Deep Sea Drilling Project (DSDP) Site 527 from the Angola Basin, South Atlantic Ocean, has been analyzed to determine whether Upper Cretaceous benthonic foraminiferal taxa are differentially sensitive to calcite dissolution, and, if so, to rank their order of susceptibility. Two regimes of dissolution, established on the basis of the degree of planktonic foraminiferal fragmentation, representing stronger and less prominent dissolution within the section studied, were used as a framework for reference. A total of 60 calcareous and eight agglutinated benthonic foraminiferal taxa were identified at the species or genus level; of these, twenty-three calcareous and five agglutinated taxa were selected for the dissolution study. Relative abundance of each of the various taxa was tested statistically, using t-test, between dissolution regimes to assess the significance of the change induced by increased dissolution.
Nuttallides truempyi and Neoeponides sp. intermediate form are interpreted as resistant to dissolution. Pullenia spp., Alabamina sp. a, Anomalina sp. a, Praebulimina sp. fusiform, and Nuttallinella sp. a are susceptible to dissolution. The majority of the taxa (16 in number) are unaffected by dissolution because they show no change between dissolution regimes. Among the agglutinated taxa Gaudryina pyramidata is resistant to dissolution, whereas the remaining four taxa are unaffected by dissolution. At the level of superfamilies, one calcareous superfamily (Discorbacea) is resistant, two (Orbitoidacea and Cassidulinacea) are unaffected, and two (Nodosariacea and Buliminacea) are susceptible to dissolution.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -28.041500 * Longitude: 1.763300
Date/Time Start: 1980-06-28T00:00:00 * Date/Time End: 1980-06-28T00:00:00
Minimum DEPTH, sediment/rock: 284.69 m * Maximum DEPTH, sediment/rock: 289.34 m
Event(s):
74-527 * Latitude: -28.041500 * Longitude: 1.763300 * Date/Time: 1980-06-28T00:00:00 * Elevation: -4428.0 m * Penetration: 384.5 m * Recovery: 243.4 m * Location: South Atlantic Ocean * Campaign: Leg74 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 43 cores; 380 m cored; 4.5 m drilled; 64.1 % recovery
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
2 | Sample code/label | Sample label | Widmark, Joen G V | DSDP/ODP/IODP sample designation | ||
3 | Sample code/label 2 | Sample label 2 | Widmark, Joen G V | S denote samples referable to the regime of stronger dissolution, M indicate samples from the regime of moderate dissolution | ||
4 | Sample mass | Samp m | g | Widmark, Joen G V | Counting >125 µm fraction | total dry sample weight |
5 | Dentalina spp. | Dentalina spp. | % | Widmark, Joen G V | Counting >125 µm fraction | |
6 | Globulina lacrima | G. lacrima | % | Widmark, Joen G V | Counting >125 µm fraction | |
7 | Buliminella beaumonti | B. beaumonti | % | Widmark, Joen G V | Counting >125 µm fraction | genus questionable |
8 | Praebulimina sp. | Praebulimina sp. | % | Widmark, Joen G V | Counting >125 µm fraction | inflated form |
9 | Praebulimina sp. | Praebulimina sp. | % | Widmark, Joen G V | Counting >125 µm fraction | fusiform |
10 | Reussella szajnochae | R. szajnochae | % | Widmark, Joen G V | Counting >125 µm fraction | |
11 | Nuttallides truempyi | N. truempyi | % | Widmark, Joen G V | Counting >125 µm fraction | |
12 | Nuttallides sp. | Nuttallides sp. | % | Widmark, Joen G V | Counting >125 µm fraction | var. a |
13 | Nuttallinella sp. | Nuttallinella sp. | % | Widmark, Joen G V | Counting >125 µm fraction | var. a |
14 | Neoeponides hillebrandti | N. hillebrandti | % | Widmark, Joen G V | Counting >125 µm fraction | |
15 | Neoeponides sp. | Neoeponides sp. | % | Widmark, Joen G V | Counting >125 µm fraction | intermediate form |
16 | Neoeponides lunata | N. lunata | % | Widmark, Joen G V | Counting >125 µm fraction | |
17 | Alabamina sp. | Alabamina sp. | % | Widmark, Joen G V | Counting >125 µm fraction | var. a |
18 | Anomalina praeacuta | A. praeacuta | % | Widmark, Joen G V | Counting >125 µm fraction | |
19 | Anomalina sp. | Anomalina sp. | % | Widmark, Joen G V | Counting >125 µm fraction | var. a |
20 | Cibicidoides spp. | Cibicidoides spp. | % | Widmark, Joen G V | Counting >125 µm fraction | questionable |
21 | Gavelinella beccariiformis | G. beccariiformis | % | Widmark, Joen G V | Counting >125 µm fraction | |
22 | Gavelinella hyphalus | G. hyphalus | % | Widmark, Joen G V | Counting >125 µm fraction | |
23 | Gyroidinoides quadratus | G. quadratus | % | Widmark, Joen G V | Counting >125 µm fraction | |
24 | Gyroidinoides spp. | Gyroidinoides spp. | % | Widmark, Joen G V | Counting >125 µm fraction | |
25 | Oridorsalis umbonatus | O. umbonatus | % | Widmark, Joen G V | Counting >125 µm fraction | questionable |
26 | Osangularia spp. | Osangularia spp. | % | Widmark, Joen G V | Counting >125 µm fraction | questionable |
27 | Pullenia spp. | Pullenia spp. | % | Widmark, Joen G V | Counting >125 µm fraction | |
28 | Nodosariaceae | Nodosariaceae | % | Widmark, Joen G V | Counting >125 µm fraction | Total of Nodosariacea |
29 | Buliminacea | Buliminacea | % | Widmark, Joen G V | Counting >125 µm fraction | Total of Buliminacea |
30 | Discorbacea | Discorbacea | % | Widmark, Joen G V | Counting >125 µm fraction | Total of Discorbacea |
31 | Orbitoidacea | Orbitoidacea | % | Widmark, Joen G V | Counting >125 µm fraction | Total of Orbitoidacea |
32 | Cassidulinacea | Cassidulinacea | % | Widmark, Joen G V | Counting >125 µm fraction | Total of Cassidulinacea |
33 | Dorothia trochoides | D. trochoides | % | Widmark, Joen G V | Counting >125 µm fraction | |
34 | Gaudryina pyramidata | G. pyramidata | % | Widmark, Joen G V | Counting >125 µm fraction | |
35 | Spiroplectammina dentata | S. dentata | % | Widmark, Joen G V | Counting >125 µm fraction | |
36 | Spiroplectammina spp. | Spiroplectammina spp. | % | Widmark, Joen G V | Counting >125 µm fraction | |
37 | Tritaxia spp. | Tritaxia spp. | % | Widmark, Joen G V | Counting >125 µm fraction | |
38 | Foraminifera, benthic agglutinated | Foram benth agg | % | Widmark, Joen G V | Counting >125 µm fraction | |
39 | Foraminifera, benthic | Foram benth | % | Widmark, Joen G V | Counting >125 µm fraction | Total identified specimens |
40 | Foraminifera, benthic indeterminata | Foram benth indet | % | Widmark, Joen G V | Counting >125 µm fraction | Total unidentified specimens |
41 | Foraminifera, benthic, fragments | Foram benth fragm | % | Widmark, Joen G V | Counting >125 µm fraction |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
960 data points