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Dowsett, Harry J; Poore, Richard Z (1990): Occurrence of planktic foraminifera in Pliocene to Holocene sediments of DSDP Hole 81-552A in the North Atlantic (Appendix 2) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.690450, Supplement to: Dowsett, HJ; Poore, RZ (1990): A new planktic foraminifer transfer function for estimating Pliocene - Holocene Sea Surface temperatures. Marine Micropaleontology, 16(1-2), 1-23, https://doi.org/10.1016/0377-8398(90)90026-I

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Abstract:
A new planktic foraminifer transfer function (GSF18) related 5 North Atlantic assemblages to winter and summer sea surface temperature. GSF18, based on recombined and simplified core top census data, preserves most environmental information and reproduces modern North Atlantic conditions with approximately the same accuracy as previous transfer functions, but can be more readily applied to faunal samples ranging in age from Pliocene to Holocene. Transfer function GSF18 has been applied to faunal data from Deep Sea Drilling Project Hole 552A to produce a 2.5 m.y. sea-surface temperature (SST) time series. Estimates show several periods between 2.3 and 4.6 Ma during which mean SST's were both several degrees warmer and several degrees cooler than modern conditions. Between 2.9 and 4.0 Ma SST was generally warmer than modern except for a 250 k.y. interval centered at 3.3 Ma. Maximum SST, with respect to modern conditions, occurred after the cool interval near 3.1 Ma when SST was approximately 3.6° C warmer than present conditions. Comparison of SST estimates with stable isotope data suggest that after peak warming at 3.1 Ma, there was an overall surface water cooling with concomitant build up of global ice volume, culminating in Northern Hemisphere glaciation. This event is also indicated by the presence of ice rafted detritus in 552A sediments at about 2.45 Ma.
Project(s):
Coverage:
Latitude: 56.042700 * Longitude: -23.231300
Date/Time Start: 1981-07-31T00:00:00 * Date/Time End: 1981-07-31T00:00:00
Minimum DEPTH, sediment/rock: 40.61 m * Maximum DEPTH, sediment/rock: 95.10 m
Event(s):
81-552A * Latitude: 56.042700 * Longitude: -23.231300 * Date/Time: 1981-07-31T00:00:00 * Elevation: -2301.0 m * Penetration: 183.5 m * Recovery: 182.3 m * Location: North Atlantic/PLATEAU * Campaign: Leg81 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 183.5 m cored; 0 m drilled; 99.4 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DEPTH, sediment/rockDepth sedmGeocode
Sample code/labelSample labelDowsett, Harry JDSDP/ODP/IODP sample designation
Globigerina bulloidesG. bulloides#Dowsett, Harry JCounting >149 µm fractionincluding G. praebulloides
Globigerina falconensisG. falconensis#Dowsett, Harry JCounting >149 µm fraction
Globigerina pseudobesaG. pseudobesa#Dowsett, Harry JCounting >149 µm fraction
Globigerina incisaG. incisa#Dowsett, Harry JCounting >149 µm fraction
Globigerina digitataG. digitata#Dowsett, Harry JCounting >149 µm fraction
Globigerina praedigitataG. praedigitata#Dowsett, Harry JCounting >149 µm fraction
Globigerina eamesiG. eamesi#Dowsett, Harry JCounting >149 µm fraction
10 Globigerina woodiG. woodi#Dowsett, Harry JCounting >149 µm fractionincluding G. apertura
11 Globigerina sp.Globigerina sp.#Dowsett, Harry JCounting >149 µm fractionvar. 1, taxon resembles G. falconensis but has reticulate surface texture similar to G. woodi group
12 Globigerinella aequilateralisG. aequilateralis#Dowsett, Harry JCounting >149 µm fraction
13 Globigerinita glutinataG. glutinata#Dowsett, Harry JCounting >149 µm fraction
14 Globigerinoides obliquusG. obliquus#Dowsett, Harry JCounting >149 µm fraction
15 Globigerinoides ruberG. ruber#Dowsett, Harry JCounting >149 µm fraction
16 Globigerinoides spp.Globigerinoides spp.#Dowsett, Harry JCounting >149 µm fractionrepresentatives of Globigerinoides (usually small) that could not be confidently assigned to G. ruber, G. obliquus (s.l.) or G. conglobatus
17 Globorotalia conomiozeaG. conomiozea#Dowsett, Harry JCounting >149 µm fraction
18 Globorotalia crassaformisG. crassaformis#Dowsett, Harry JCounting >149 µm fraction
19 Globorotalia crassaformisG. crassaformis#Dowsett, Harry JCounting >149 µm fractionwith full keeled ultimate whorl
20 Globorotalia hirsutaG. hirsuta#Dowsett, Harry JCounting >149 µm fraction
21 Globorotalia inflataG. inflata#Dowsett, Harry JCounting >149 µm fractionincluding G. puncticulata
22 Globorotalia margaritaeG. margaritae#Dowsett, Harry JCounting >149 µm fraction
23 Globorotalia menardiiG. menardii#Dowsett, Harry JCounting >149 µm fraction
24 Globorotalia scitulaG. scitula#Dowsett, Harry JCounting >149 µm fraction
25 Neogloboquadrina acostaensisN. acostaensis#Dowsett, Harry JCounting >149 µm fraction
26 Neogloboquadrina atlantica sinistralN. atlantica s#Dowsett, Harry JCounting >149 µm fraction
27 Neogloboquadrina atlantica dextralN. atlantica d#Dowsett, Harry JCounting >149 µm fraction
28 Neogloboquadrina pachyderma sinistralN. pachyderma s#Dowsett, Harry JCounting >149 µm fractionrelative small, compact with 4-5 chambers in the ultimate whorl, kummerform ultimate chamber, and a slightly to distinct oval equatorial outline are included here
29 Neogloboquadrina pachyderma dextralN. pachyderma d#Dowsett, Harry JCounting >149 µm fraction
30 Neogloboquadrina pachyderma dextralN. pachyderma d#Dowsett, Harry JCounting >149 µm fractionthis category is used for specimens of right-coiling Neogloboquadrina with more than four chambers in the ultimate whorl that are transitional between N. pachyderma and N. acostaensis or N. atlantica
31 Orbulina universaO. universa#Dowsett, Harry JCounting >149 µm fraction
32 Turborotalia quinquelobaT. quinqueloba#Dowsett, Harry JCounting >149 µm fraction
33 Foraminifera, planktic, otherForam plankt oth#Dowsett, Harry JCounting >149 µm fractionthis category includes rare unidentified specimens and taxa
34 Foraminifera, planktic reworkedForam plankt rew#Dowsett, Harry JCounting >149 µm fraction
35 Foraminifera, plankticForam plankt#Dowsett, Harry JCounting >149 µm fractiontotal
36 Foraminifera, planktic, fragmentsForam plankt fragm#Dowsett, Harry JCounting >149 µm fraction
37 Ice rafted debrisIRD#Dowsett, Harry JCounting >149 µm fraction
38 Foraminifera, benthicForam benth#Dowsett, Harry JCounting >149 µm fraction
Size:
4587 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Depth sed [m]

Sample label
(DSDP/ODP/IODP sample designation)

G. bulloides [#]
(including G. praebulloides, C...)

G. falconensis [#]
(Counting >149 µm fraction)

G. pseudobesa [#]
(Counting >149 µm fraction)

G. incisa [#]
(Counting >149 µm fraction)

G. digitata [#]
(Counting >149 µm fraction)

G. praedigitata [#]
(Counting >149 µm fraction)

G. eamesi [#]
(Counting >149 µm fraction)
10 
G. woodi [#]
(including G. apertura, Counti...)
11 
Globigerina sp. [#]
(var. 1, taxon resembles G. fa...)
12 
G. aequilateralis [#]
(Counting >149 µm fraction)
13 
G. glutinata [#]
(Counting >149 µm fraction)
14 
G. obliquus [#]
(Counting >149 µm fraction)
15 
G. ruber [#]
(Counting >149 µm fraction)
16 
Globigerinoides spp. [#]
(representatives of Globigerin...)
17 
G. conomiozea [#]
(Counting >149 µm fraction)
18 
G. crassaformis [#]
(Counting >149 µm fraction)
19 
G. crassaformis [#]
(with full keeled ultimate who...)
20 
G. hirsuta [#]
(Counting >149 µm fraction)
21 
G. inflata [#]
(including G. puncticulata, Co...)
22 
G. margaritae [#]
(Counting >149 µm fraction)
23 
G. menardii [#]
(Counting >149 µm fraction)
24 
G. scitula [#]
(Counting >149 µm fraction)
25 
N. acostaensis [#]
(Counting >149 µm fraction)
26 
N. atlantica s [#]
(Counting >149 µm fraction)
27 
N. atlantica d [#]
(Counting >149 µm fraction)
28 
N. pachyderma s [#]
(relative small, compact with ...)
29 
N. pachyderma d [#]
(Counting >149 µm fraction)
30 
N. pachyderma d [#]
(this category is used for spe...)
31 
O. universa [#]
(Counting >149 µm fraction)
32 
T. quinqueloba [#]
(Counting >149 µm fraction)
33 
Foram plankt oth [#]
(this category includes rare u...)
34 
Foram plankt rew [#]
(Counting >149 µm fraction)
35 
Foram plankt [#]
(total, Counting >149 µm fraction)
36 
Foram plankt fragm [#]
(Counting >149 µm fraction)
37 
IRD [#]
(Counting >149 µm fraction)
38 
Foram benth [#]
(Counting >149 µm fraction)
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