Data Description

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Zhang, J; Scott, DB (1996): Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic. doi:10.1594/PANGAEA.758101,
Supplement to: Zhang, Jijun; Scott, David B (1996): Messinian deep-water turbidites and glacioeustatic sea-level changes in the North Atlantic: Linkage to the Mediterranean salinity crisis. Paleoceanography, 11(3), 277-297, doi:10.1029/96PA00572
Our benthic foraminiferal data clearly indicate eight layers of deep-water turbidites during the Messinian (MTL 1-8) and one in the early Pliocene (PTL 1) in Ocean Drilling Program Leg 105, Site 646B. These deep-water tuibidite deposits are characterized by highly concentrated agglutinated marsh benthic foraminifera (e.g., Trochammina cf. squamata, Ammotium sp. A, Miliammina fusca), rounded quartz, polished thick-walled benthic foraminifera, wood fragments, plant seeds, plant fruit, and highly concentrated mica and are interbedded with sediments containing deep-water benthic faunas. We suggest these turbidites deposited during sea-level low stands (approx. 80-100 m below sea level), and their ages are tentatively correlated to 6.59, 6.22, 6.01, 5.89, 5.75, 5.7, 5.65, 5.60, and 5.55 Ma, respectively, based on the Messinian oxygen isotope enrichments at Site 552A of Deep Sea Drilling Project Leg 81. The turbidites layers during the late Messinian, coeval with frequent climate changes suggested by six oxygen enrichment excursions of Site 552A, may have been in part linked to the late Messinian evaporite deposits in the Mediterranean Basin. The most profound climate changes at 5.75 and 5.55 Ma may have been related to the Lower and Upper Evaporites in the Mediterranean Basin.
Latitude: 58.209300 * Longitude: -48.369100
Minimum DEPTH, sediment/rock: 384.1 m * Maximum DEPTH, sediment/rock: 758.8 m
105-646B * * Latitude: 58.209300 * Longitude: -48.369100 * Date/Time Start: 1985-10-04T08:45:00 * Date/Time End: 1985-10-13T21:01:00 * Elevation: -3459.0 m * Recovery: 404.25 m * Penetration: 766.70 m * Location: Labrador Sea * * Campaign: Leg105 * * Basis: Joides Resolution * * Device: Drilling * * Comment: 80 cores; 766.2 m cored; 0 m drilled; 52.8 % recovery
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Sample code/label *LabelZhang, Jijun *ODP sample designation *
2DEPTH, sediment/rock *DepthmGeocode
3Foraminifera, benthic *Foram bent#Zhang, Jijun *counted/picked
4Foraminifera, benthic *Foram bent#/cm3Zhang, Jijun *
5Foraminifera, benthic calcareous *Foram bent calc%Zhang, Jijun *Counting *
6Foraminifera, benthic *Foram bent%Zhang, Jijun *Counting *of total fauna (benthic + planktonic)
7Fragmentation index, planktic foraminifera *Fragm plankt foram%Zhang, Jijun *Counting *
8Lenticulina spp. *Lenticulina spp.%Zhang, Jijun *Counting *
9Nonion spp. *Nonion spp.%Zhang, Jijun *Counting *
10Nonionella spp. *Nonionella spp.%Zhang, Jijun *Counting *
11Astrononion echolsi *A. echolsi%Zhang, Jijun *Counting *
12Astrononion umbilicatulum *A. umbilicatulum%Zhang, Jijun *Counting *
13Elphidium sp. *Elphidium sp.%Zhang, Jijun *Counting *genus questionable
14Pullenia bulloides *P. bulloides%Zhang, Jijun *Counting *
15Pullenia quinqueloba *P. quinqueloba%Zhang, Jijun *Counting *
16Melonis barleeanus *M. barleeanus%Zhang, Jijun *Counting *including Melonis affinis
17Melonis pompilioides *M. pompilioides%Zhang, Jijun *Counting *
18Florilus sp. *Florilus sp.%Zhang, Jijun *Counting *
19Sphaeroidina bulloides *S. bulloides%Zhang, Jijun *Counting *
20Oridorsalis umbonatus *O. umbonatus%Zhang, Jijun *Counting *
21Planulina rugosa *P. rugosa%Zhang, Jijun *Counting *
22Planulina wuellerstorfi *P. wuellerstorfi%Zhang, Jijun *Counting *
23Cibicides lobatulus *C. lobatulus%Zhang, Jijun *Counting *
24Cibicidoides bradyi *C. bradyi%Zhang, Jijun *Counting *
25Cibicidoides spp. *Cibicidoides spp.%Zhang, Jijun *Counting *
26Rosalina sp. *Rosalina sp.%Zhang, Jijun *Counting *genus questionable
27Gyroidina soldanii *G. soldanii%Zhang, Jijun *Counting *
28Gavelinopsis praegeri *G. praegeri%Zhang, Jijun *Counting *
29Laticarinina pauperata *L. pauperata%Zhang, Jijun *Counting *
30Valvulineria laevigata *V. laevigata%Zhang, Jijun *Counting *
31Nuttallides umbonifera *N. umbonifera%Zhang, Jijun *Counting *
32Hoeglundina elegans *H. elegans%Zhang, Jijun *Counting *
33Epistominella exigua *E. exigua%Zhang, Jijun *Counting *
34Eponides polius *E. polius%Zhang, Jijun *Counting *
35Eponides tumidulus *E. tumidulus%Zhang, Jijun *Counting *
36Eponides weddellensis *E. weddellensis%Zhang, Jijun *Counting *
37Eponides sp. *Eponides sp.%Zhang, Jijun *Counting *genus questionable, sp. A
38Discorbinella bertheloti *D. bertheloti%Zhang, Jijun *Counting *
39Globocassidulina subglobosa *G. subglobosa%Zhang, Jijun *Counting *
40Cassidulina laevigata *C. laevigata%Zhang, Jijun *Counting *
41Cassidulina reniforme *C. reniforme%Zhang, Jijun *Counting *
42Cassidulina sp. *Cassidulina sp.%Zhang, Jijun *Counting *
43Cassidulinoides tenuis *C. tenuis%Zhang, Jijun *Counting *
44Foraminifera, benthic indeterminata *Foram bent indet%Zhang, Jijun *Counting *unidentified rotaliids
45Uvigerina peregrina *U. peregrina%Zhang, Jijun *Counting *
46Uvigerina proboscidea *U. proboscidea%Zhang, Jijun *Counting *
47Uvigerina sp. *Uvigerina sp.%Zhang, Jijun *Counting *
48Rectuvigerina spp. *Rectuvigerina spp.%Zhang, Jijun *Counting *
49Trifarina angulosa *T. angulosa%Zhang, Jijun *Counting *
50Ehrenbergina trigona *E. trigona%Zhang, Jijun *Counting *
51Bulimina alazanensis *B. alazanensis%Zhang, Jijun *Counting *
52Bulimina tessellata *B. tessellata%Zhang, Jijun *Counting *
53Bulimina sp. *Bulimina sp.%Zhang, Jijun *Counting *
54Globobulimina auriculata *G. auriculata%Zhang, Jijun *Counting *
55Robertinoides charlottensis *R. charlottensis%Zhang, Jijun *Counting *
56Bolivina pygmaea *B. pygmaea%Zhang, Jijun *Counting *
57Bolivina pygmaea *B. pygmaea%Zhang, Jijun *Counting *cf. species
58Bolivina pseudoplicata *B. pseudoplicata%Zhang, Jijun *Counting *
59Bolivina pseudothalmanni *B. pseudothalmanni%Zhang, Jijun *Counting *
60Bolivina simplex *B. simplex%Zhang, Jijun *Counting *
61Bolivina pseudopunctata *B. pseudopunctata%Zhang, Jijun *Counting *
62Bolivina lowmani *B. lowmani%Zhang, Jijun *Counting *
63Bolivina inflata *B. inflata%Zhang, Jijun *Counting *
64Bolivina cf. alata *B. cf. alata%Zhang, Jijun *Counting *cf. species
65Bolivina spp. *Bolivina spp.%Zhang, Jijun *Counting *
66Nodosaria sp. *Nodosaria sp.%Zhang, Jijun *Counting *
67Fursenkoina fusiformis *F. fusiformis%Zhang, Jijun *Counting *
68Pleurostomella spp. *Pleurostomella spp.%Zhang, Jijun *Counting *
69Stilostomella spp. *Stilostomella spp.%Zhang, Jijun *Counting *
70Dentalina communis *D. communis%Zhang, Jijun *Counting *
71Guttulina sp. *Guttulina sp.%Zhang, Jijun *Counting *
72Oolina spp. *Oolina spp.%Zhang, Jijun *Counting *
73Lagena spp. *Lagena spp.%Zhang, Jijun *Counting *
74Fissurina spp. *Fissurina spp.%Zhang, Jijun *Counting *
75Quinqueloculina seminula *Q. seminula%Zhang, Jijun *Counting *
76Quinqueloculina sp. *Quinqueloculina sp.%Zhang, Jijun *Counting *
77Pyrgo spp. *Pyrgo spp.%Zhang, Jijun *Counting *
78Sigmoilina tenuis *S. tenuis%Zhang, Jijun *Counting *
79Tosaia hanzawai *T. hanzawai%Zhang, Jijun *Counting *
80Cornuspirella diffusa *C. diffusa%Zhang, Jijun *Counting *
81Foraminifera, benthic indeterminata *Foram bent indet%Zhang, Jijun *Counting *unidentified serial forms
82Karreriella bradyi *K. bradyi%Zhang, Jijun *Counting *
83Martinottiella communis *M. communis%Zhang, Jijun *Counting *
84Siphotextularia sp. *Siphotextularia sp.%Zhang, Jijun *Counting *
85Trochammina squamata *T. squamata%Zhang, Jijun *Counting *cf. species
86Trochammina sp. *Trochammina sp.%Zhang, Jijun *Counting *sp. W
87Cyclammina cancellata *C. cancellata%Zhang, Jijun *Counting *
88Ammotium sp. *Ammotium sp.%Zhang, Jijun *Counting *sp. A
89Recurvoides sp. *Recurvoides sp.%Zhang, Jijun *Counting *
90Haplophragmoides sp. *Haplophragmoides sp.%Zhang, Jijun *Counting *
91Miliammina fusca *M. fusca%Zhang, Jijun *Counting *
92Ammobaculites sp. *Ammobaculites sp.%Zhang, Jijun *Counting *
93Sigmoilopsis schlumbergeri *S. schlumbergeri%Zhang, Jijun *Counting *
94Sigmoilopsis sp. *Sigmoilopsis sp.%Zhang, Jijun *Counting *
95Spiroplectammina sp. *Spiroplectammina sp.%Zhang, Jijun *Counting *
96Lagenammina sp. *Lagenammina sp.%Zhang, Jijun *Counting *
97Psammosphaera spp. *Psammosphaera spp.%Zhang, Jijun *Counting *
98Saccammina sp. *Saccammina sp.%Zhang, Jijun *Counting *
99Rhizammina spp. *Rhizammina spp.%Zhang, Jijun *Counting *
100Dendrophrya sp. *Dendrophrya sp.%Zhang, Jijun *Counting *
101Bigenerina sp. *Bigenerina sp.%Zhang, Jijun *Counting *genus questionable
102Glomospira sp. *Glomospira sp.%Zhang, Jijun *Counting *
103Reophax sp. *Reophax sp.%Zhang, Jijun *Counting *
104Textularia sp. *Textularia sp.%Zhang, Jijun *Counting *
105Ammodiscus sp. *Ammodiscus sp.%Zhang, Jijun *Counting *
106Vulvulina spinosa *V. spinosa%Zhang, Jijun *Counting *
107Foraminifera, benthic agglutinated indeterminata *Foram bent agg ind%Zhang, Jijun *Counting *
9434 data points

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