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Zhang, Jijun; Scott, David B (1996): Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic. PANGAEA,, Supplement to: Zhang, J; Scott, DB (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,

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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
Date/Time Start: 1985-10-04T08:45:00 * Date/Time End: 1985-10-13T21:01:00
Minimum DEPTH, sediment/rock: 384.10 m * Maximum DEPTH, sediment/rock: 758.80 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 * Penetration: 766.7 m * Recovery: 404.25 m * Location: Labrador Sea * Campaign: Leg105 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 80 cores; 766.2 m cored; 0 m drilled; 52.8 % recovery
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Sample code/labelSample labelZhang, JijunODP sample designation
2DEPTH, sediment/rockDepthmGeocode
3Foraminifera, benthicForam bent#Zhang, Jijuncounted/picked
4Foraminifera, benthicForam bent#/cm3Zhang, Jijun
5Foraminifera, benthic calcareousForam bent calc%Zhang, JijunCounting
6Foraminifera, benthicForam bent%Zhang, JijunCountingof total fauna (benthic + planktonic)
7Fragmentation index, planktic foraminiferaFragm plankt foram%Zhang, JijunCounting
8Lenticulina spp.Lenticulina spp.%Zhang, JijunCounting
9Nonion spp.Nonion spp.%Zhang, JijunCounting
10Nonionella spp.Nonionella spp.%Zhang, JijunCounting
11Astrononion echolsiA. echolsi%Zhang, JijunCounting
12Astrononion umbilicatulumA. umbilicatulum%Zhang, JijunCounting
13Elphidium sp.Elphidium sp.%Zhang, JijunCountinggenus questionable
14Pullenia bulloidesP. bulloides%Zhang, JijunCounting
15Pullenia quinquelobaP. quinqueloba%Zhang, JijunCounting
16Melonis barleeanusM. barleeanus%Zhang, JijunCountingincluding Melonis affinis
17Melonis pompilioidesM. pompilioides%Zhang, JijunCounting
18Florilus sp.Florilus sp.%Zhang, JijunCounting
19Sphaeroidina bulloidesS. bulloides%Zhang, JijunCounting
20Oridorsalis umbonatusO. umbonatus%Zhang, JijunCounting
21Planulina rugosaP. rugosa%Zhang, JijunCounting
22Planulina wuellerstorfiP. wuellerstorfi%Zhang, JijunCounting
23Cibicides lobatulusC. lobatulus%Zhang, JijunCounting
24Cibicidoides bradyiC. bradyi%Zhang, JijunCounting
25Cibicidoides spp.Cibicidoides spp.%Zhang, JijunCounting
26Rosalina sp.Rosalina sp.%Zhang, JijunCountinggenus questionable
27Gyroidina soldaniiG. soldanii%Zhang, JijunCounting
28Gavelinopsis praegeriG. praegeri%Zhang, JijunCounting
29Laticarinina pauperataL. pauperata%Zhang, JijunCounting
30Valvulineria laevigataV. laevigata%Zhang, JijunCounting
31Nuttallides umboniferaN. umbonifera%Zhang, JijunCounting
32Hoeglundina elegansH. elegans%Zhang, JijunCounting
33Epistominella exiguaE. exigua%Zhang, JijunCounting
34Eponides poliusE. polius%Zhang, JijunCounting
35Eponides tumidulusE. tumidulus%Zhang, JijunCounting
36Eponides weddellensisE. weddellensis%Zhang, JijunCounting
37Eponides sp.Eponides sp.%Zhang, JijunCountinggenus questionable, sp. A
38Discorbinella berthelotiD. bertheloti%Zhang, JijunCounting
39Globocassidulina subglobosaG. subglobosa%Zhang, JijunCounting
40Cassidulina laevigataC. laevigata%Zhang, JijunCounting
41Cassidulina reniformeC. reniforme%Zhang, JijunCounting
42Cassidulina sp.Cassidulina sp.%Zhang, JijunCounting
43Cassidulinoides tenuisC. tenuis%Zhang, JijunCounting
44Foraminifera, benthic indeterminataForam bent indet%Zhang, JijunCountingunidentified rotaliids
45Uvigerina peregrinaU. peregrina%Zhang, JijunCounting
46Uvigerina proboscideaU. proboscidea%Zhang, JijunCounting
47Uvigerina sp.Uvigerina sp.%Zhang, JijunCounting
48Rectuvigerina spp.Rectuvigerina spp.%Zhang, JijunCounting
49Trifarina angulosaT. angulosa%Zhang, JijunCounting
50Ehrenbergina trigonaE. trigona%Zhang, JijunCounting
51Bulimina alazanensisB. alazanensis%Zhang, JijunCounting
52Bulimina tessellataB. tessellata%Zhang, JijunCounting
53Bulimina sp.Bulimina sp.%Zhang, JijunCounting
54Globobulimina auriculataG. auriculata%Zhang, JijunCounting
55Robertinoides charlottensisR. charlottensis%Zhang, JijunCounting
56Bolivina pygmaeaB. pygmaea%Zhang, JijunCounting
57Bolivina pygmaeaB. pygmaea%Zhang, JijunCountingcf. species
58Bolivina pseudoplicataB. pseudoplicata%Zhang, JijunCounting
59Bolivina pseudothalmanniB. pseudothalmanni%Zhang, JijunCounting
60Bolivina simplexB. simplex%Zhang, JijunCounting
61Bolivina pseudopunctataB. pseudopunctata%Zhang, JijunCounting
62Bolivina lowmaniB. lowmani%Zhang, JijunCounting
63Bolivina inflataB. inflata%Zhang, JijunCounting
64Bolivina cf. alataB. cf. alata%Zhang, JijunCountingcf. species
65Bolivina spp.Bolivina spp.%Zhang, JijunCounting
66Nodosaria sp.Nodosaria sp.%Zhang, JijunCounting
67Fursenkoina fusiformisF. fusiformis%Zhang, JijunCounting
68Pleurostomella spp.Pleurostomella spp.%Zhang, JijunCounting
69Stilostomella spp.Stilostomella spp.%Zhang, JijunCounting
70Dentalina communisD. communis%Zhang, JijunCounting
71Guttulina sp.Guttulina sp.%Zhang, JijunCounting
72Oolina spp.Oolina spp.%Zhang, JijunCounting
73Lagena spp.Lagena spp.%Zhang, JijunCounting
74Fissurina spp.Fissurina spp.%Zhang, JijunCounting
75Quinqueloculina seminulaQ. seminula%Zhang, JijunCounting
76Quinqueloculina sp.Quinqueloculina sp.%Zhang, JijunCounting
77Pyrgo spp.Pyrgo spp.%Zhang, JijunCounting
78Sigmoilina tenuisS. tenuis%Zhang, JijunCounting
79Tosaia hanzawaiT. hanzawai%Zhang, JijunCounting
80Cornuspirella diffusaC. diffusa%Zhang, JijunCounting
81Foraminifera, benthic indeterminataForam bent indet%Zhang, JijunCountingunidentified serial forms
82Karreriella bradyiK. bradyi%Zhang, JijunCounting
83Martinottiella communisM. communis%Zhang, JijunCounting
84Siphotextularia sp.Siphotextularia sp.%Zhang, JijunCounting
85Trochammina squamataT. squamata%Zhang, JijunCountingcf. species
86Trochammina sp.Trochammina sp.%Zhang, JijunCountingsp. W
87Cyclammina cancellataC. cancellata%Zhang, JijunCounting
88Ammotium sp.Ammotium sp.%Zhang, JijunCountingsp. A
89Recurvoides sp.Recurvoides sp.%Zhang, JijunCounting
90Haplophragmoides sp.Haplophragmoides sp.%Zhang, JijunCounting
91Miliammina fuscaM. fusca%Zhang, JijunCounting
92Ammobaculites sp.Ammobaculites sp.%Zhang, JijunCounting
93Sigmoilopsis schlumbergeriS. schlumbergeri%Zhang, JijunCounting
94Sigmoilopsis sp.Sigmoilopsis sp.%Zhang, JijunCounting
95Spiroplectammina sp.Spiroplectammina sp.%Zhang, JijunCounting
96Lagenammina sp.Lagenammina sp.%Zhang, JijunCounting
97Psammosphaera spp.Psammosphaera spp.%Zhang, JijunCounting
98Saccammina sp.Saccammina sp.%Zhang, JijunCounting
99Rhizammina spp.Rhizammina spp.%Zhang, JijunCounting
100Dendrophrya sp.Dendrophrya sp.%Zhang, JijunCounting
101Bigenerina sp.Bigenerina sp.%Zhang, JijunCountinggenus questionable
102Glomospira sp.Glomospira sp.%Zhang, JijunCounting
103Reophax sp.Reophax sp.%Zhang, JijunCounting
104Textularia sp.Textularia sp.%Zhang, JijunCounting
105Ammodiscus sp.Ammodiscus sp.%Zhang, JijunCounting
106Vulvulina spinosaV. spinosa%Zhang, JijunCounting
107Foraminifera, benthic agglutinated indeterminataForam bent agg ind%Zhang, JijunCounting
9434 data points

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