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  • Springer Nature  (44,888)
  • PANGAEA
  • 1985-1989  (27,202)
  • 1980-1984  (22,337)
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  • 1
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    (Table 1) Distribution of benthic and planktonic foraminifers at DSDP Hole 28-270 (1986)
    PANGAEA
    In:  Supplement to: Leckie, R Mark; Webb, Peter-Noel (1986): Late Paleogene and early Neogene foraminifers of Deep Sea Drilling Project Site 270, Ross Sea, Antarctica. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1093-1142, https://doi.org/10.2973/dsdp.proc.90.124.1986
    Details
    Publication Date: 2023-07-09
    Description: Foraminifers from the upper Oligocene, lower Miocene, and Pleistocene at Site 270 in the southern Ross Sea, Antarctica, are discussed and illustrated. The total fauna comprises 74 genera and 163 species. A small number of taxa are recycled from Cretaceous and older Paleogene sediments. Four assemblage zones are proposed, the age of informal lithologic units discussed, and potentially important hiatuses identified. Microfaunas reflect a mixing of biogeographic affinities with one element exhibiting similarities to temperate late Paleogene assemblages in New Zealand, and another representing the early cold-water assemblages of the antarctic Neogene.
    Keywords: 28-270; Ammobaculites cf. coprolithiformis; Ammobaculites cf. expansus; Ammodiscus cf. glabratus; Ammodiscus cf. incertus; Ammoscalaria pseudospiralis; Anomalinoides cf. macroglabra; Anomalinoides globulosa; Anomalinoides pinguiglabra; Antarctic Ocean; Arenodosaria antipoda; Articulina sp.; Astacolus crepidularis; Astacolus sp.; Astrononion echolsi; Astrorhiza cf. granulosa; Bathysiphon aff. cyclindrica; Bathysiphon cf. alba; Bathysiphon discreta; Bathysiphon sp.; Cancris laevinflatus; Candeina antarctica; Cassidulina bradyi; Cassidulinoides braziliensis; Cassidulinoides cf. chapmani; Cassidulinoides cf. parkeriana; Ceratobulimina spp.; Chiloguembelina cubensis; Cibicides cf. thiara; Cibicides lobatulus; Cibicides medocris; Cibicides pseudoungerianus; Cibicides refulgens; Cibicides temperata; Cibicides vortex; Cyclammina cf. complanata; Cyclammina incisa; Cyclammina rotundata; Deep Sea Drilling Project; Dentalina cf. advena; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Ehrenbergina glabra; Elphidium cf. nitidum; Elphidium magellanicum; Elphidium sp.; Epistominella vitrea; Epoch; Eponides bradyi; Eponides cf. weddellensis; Eponides tumidulus; Fissurina agassizi; Fissurina annectens; Fissurina bisulcata; Fissurina danica; Fissurina fimbriata; Fissurina kerguelensis; Fissurina laevigata; Fissurina lucida; Fissurina marginata; Fissurina sp.; Flintina cf. droogeri; Fursenkoina schreibersiana; Gaudryina reusii; Gaudryina sp.; Globigerina cf. angiporoides; Globigerina cf. ouachitaensis; Globigerina megastoma; Globigerina sp.; Globigerinita cf. glutinata; Globigerinoides trilobus; Globobulimina sp.; Globocassidulina biora; Globocassidulina crassa; Globocassidulina subglobosa; Globorotalia cf. gemma; Globorotalia cf. siakensis; Globorotalia sp.; Globorotaloides cf. suteri; Glomar Challenger; Gyroidina cf. orbicularis; Gyroidina parva; Gyroidina zelandica; Haplophragmoides sp.; Hormosina globulifera; Hyperammina cylindrica; Islandiella norcrossi; Islandiella teretis; Jaculella cf. acuta; Karreriella obscura; Lagena cf. laevigata; Lagena elongata; Lagena gracilis; Lagena laevis; Lagena nebulosa; Lagena sequenziana; Lagena striata; Lagena sulcata; Leg28; Lenticulina callifera; Lenticulina cf. punctata; Lenticulina lenticula; Lenticulina sp.; Lithologic unit/sequence; Marginulina cf. cocoaensis; Marginulina tumida; Marginulinopsis cf. pedum; Marsipella sp.; Melonis affinis; Melonis barleeanus; Miliammina lata; Neogloboquadrina pachyderma; Nodosaria calomorpha; Nodosaria sp.; Nonionella bradii; Nonionella iridea; Nonionella magnalingua; Oolina apiculata; Oolina apiopleura; Oolina globosa; Oridorsalis tenera; Parafissurina cf. tasmanica; Parafissurina curta; Parafissurina groenlandica; Parafissurina lateralia; Parafissurina subcarinata; Protobotellina cyclindica; Psammosphaera fusca; Pullenia bulloides; Pullenia subcarinata; Pyrgo cf. vespertilio; Quinqueloculina seminulum; Quinqueloculina triangularis; Reophax cf. cushmanii; Reophax cf. nodulosa; Reophax scorpiurus; Reophax sp.; Rhabdammina cf. abyssorum; Rhabdammina linearis; Rhizammina algaeformis; Rhizammina sp.; Robertina tasmainia; Rosalina globularis; Sample code/label; Saracenaria kellumi; Saracenaria sp.; Siphonina spp.; Sphaeroidina bulloides; Textularia cf. plummerae; Textularia sp.; Trifarina aff. fuegina; Trifarina earlandi; Trifarina pauperata; Triloculina rotundata; Trochammina sp.; Trochoelphidiella pustulosa; Trochoelphidiella sp.; Trochoelphidiella uniforamina; Uvigerina cf. miozea; Uvigerina sp.; Vaginulina awamoana; Vaginulina cf. reophagia
    Type: Dataset
    Format: text/tab-separated-values, 18253 data points
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  • 2
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    Stable isotope data of the 120 k time slice (1982)
    PANGAEA
    Details
    Publication Date: 2023-07-09
    Keywords: A150/180; A180-73; CH70-K11; CH7X; Cibicidoides kullenbergi, δ13C; Cibicidoides kullenbergi, δ18O; Cibicidoides sp., δ13C; Cibicidoides sp., δ18O; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; CLIMAP; Climate: Long-Range Investigation, Mapping, and Prediction; Coccoliths, δ18O; D117; DEPTH, sediment/rock; East Atlantic; Elevation of event; ELT49; ELT49.018-PC; Eltanin; Event label; Favocassidulina favus, δ13C; Favocassidulina favus, δ18O; Foraminifera, benthic; Foraminifera, planktic indeterminata; GC; GIK12392-1; Globigerina bulloides, δ13C; Globigerina bulloides, δ18O; Globigerina quinqueloba, δ13C; Globigerina quinqueloba, δ18O; Globigerinoides ruber pink, δ13C; Globigerinoides ruber pink, δ18O; Globigerinoides sacculifer, δ13C; Globigerinoides sacculifer, δ18O; Globocassidulina subglobosa, δ13C; Globocassidulina subglobosa, δ18O; Globoquadrina conglomerata, δ18O; Globorotalia inflata, δ13C; Globorotalia inflata, δ18O; Globorotalia truncatulinoides, δ13C; Globorotalia truncatulinoides, δ18O; Gravity corer; Gyroidina sp., δ13C; Gyroidina sp., δ18O; Hoeglundina elegans, δ13C; Hoeglundina elegans, δ18O; Indian Ocean; Jean Charcot; K708-001; KAL; Kasten corer; Latitude of event; Longitude of event; M12392-1; M25; Marion Dufresne (1972); MD00; MD73025-2; Melonis pompilioides, δ13C; Melonis pompilioides, δ18O; Melonis sp., δ13C; Melonis sp., δ18O; Meteor (1964); Neogloboquadrina dutertrei, δ18O; Neogloboquadrina pachyderma sinistral, δ13C; Neogloboquadrina pachyderma sinistral, δ18O; Nonion sp., δ13C; Nonion sp., δ18O; Oridorsalis sp., δ13C; Oridorsalis sp., δ18O; Oridorsalis tener, δ13C; Oridorsalis tener, δ18O; OSIRIS I; PC; Piston corer; Pulleniatina obliquiloculata, δ18O; Pyrgo murrhina, δ13C; Pyrgo murrhina, δ18O; Pyrgo sp., δ13C; Pyrgo sp., δ18O; RC08; RC08-145; RC08-39; RC10; RC10-65; RC11; RC1112; RC11-120; RC11-210; RC11-230; RC11-86; RC12; RC12-294; RC12-339; RC13; RC13-205; RC13-228; RC13-229; RC15; RC15-61; RC17; RC17-69; RC17-98; Robert Conrad; TR126-23; TR126-29; Uvigerina sp., δ13C; Uvigerina sp., δ18O; V12; V12-122; V18; V18-68; V19; V19-29; V19-53; V21; V21-146; V22; V22-108; V22-174; V22-182; V22-196; V22-38; V23; V23-82; V25; V25-59; V27; V27-20; V27-86; V28; V28-127; V28-14; V28-238; V28-304; V28-345; V28-56; V29; V29-179; V29-29; V30; V30-97; V32; V32-126; V32-128; V34; V34-88; Vema; Y71-06; Y71-06-12; Y7211; Y7211-1; Yaquina; δ18O, adjusted/corrected
    Type: Dataset
    Format: text/tab-separated-values, 5924 data points
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  • 3
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    Meteorological synoptical observations during Meteor cruise M68A (1984)
    PANGAEA
    In:  Deutscher Wetterdienst/Seewetteramt, Offenbach/Hamburg
    Details
    Publication Date: 2023-07-10
    Keywords: Characteristic of barometric tendency; Cloud base height; CT; DATE/TIME; Dew/frost point; Direction of first swell waves; Height of first swell waves; Height of waves; High cloud; Horizontal visibility; Humidity, relative; Indicator for inclusion or ommission of precipitation data; Indicator for source and units of wind speed; LATITUDE; LONGITUDE; Low/middle cloud amount; Low cloud; M68A; M68A-track; Mean ships course; Mean ships speed; Meteor (1964); Middle cloud; Past weather1; Past weather2; Periode of first swell waves; Present weather; Pressure, atmospheric; Quality control indicator for (a); Quality control indicator for (clouds); Quality control indicator for (dd); Quality control indicator for (Ds); Quality control indicator for (ff); Quality control indicator for (h); Quality control indicator for (HwHw); Quality control indicator for (iR,RRR,tR); Quality control indicator for (ppp); Quality control indicator for (PPPP); Quality control indicator for (PwPw); Quality control indicator for (swell); Quality control indicator for (tbtbtb); Quality control indicator for (TdTdTd); Quality control indicator for (TTT); Quality control indicator for (TwTwTw); Quality control indicator for (Vs); Quality control indicator for (VV); Quality control indicator for (weather); Temperature, air; Temperature, air, wet bulb; Temperature, water; Total cloud amount; Underway cruise track measurements; Wave period; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 699 data points
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  • 4
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    Meteorological synoptical observations during Meteor cruise M72 (1985)
    PANGAEA
    In:  Deutscher Wetterdienst/Seewetteramt, Offenbach/Hamburg
    Details
    Publication Date: 2023-07-10
    Keywords: Characteristic of barometric tendency; Cloud base height; CT; DATE/TIME; Dew/frost point; Direction of first swell waves; Height of first swell waves; Height of waves; High cloud; Horizontal visibility; Humidity, relative; Indicator for inclusion or ommission of precipitation data; Indicator for source and units of wind speed; Indicator for type of station operation and inclusion of weather data; LATITUDE; LONGITUDE; Low/middle cloud amount; Low cloud; M72; M72-track; Mean ships course; Mean ships speed; Meteor (1964); Middle cloud; NOAMP V; Past weather1; Past weather2; Periode of first swell waves; Present weather; Pressure, atmospheric; Quality control indicator for (a); Quality control indicator for (clouds); Quality control indicator for (dd); Quality control indicator for (Ds); Quality control indicator for (ff); Quality control indicator for (h); Quality control indicator for (HwHw); Quality control indicator for (iR,RRR,tR); Quality control indicator for (ppp); Quality control indicator for (PPPP); Quality control indicator for (PwPw); Quality control indicator for (swell); Quality control indicator for (tbtbtb); Quality control indicator for (TdTdTd); Quality control indicator for (TTT); Quality control indicator for (TwTwTw); Quality control indicator for (Vs); Quality control indicator for (VV); Quality control indicator for (weather); Temperature, air; Temperature, air, wet bulb; Temperature, water; Total cloud amount; Underway cruise track measurements; Wave period; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 14051 data points
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  • 5
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    Stable oxygen and carbon isotope ratios of foraminifera from Oligocene to Miocene sediments of DSDP Hole 39-354 from Ceara Rise, West Altlantic (Table 1) (1983)
    PANGAEA
    In:  Supplement to: Biolzi, Milena (1983): Stable isotopic study of Oligocene-Miocene sediments from DSDP Site 354, Equatorial Atlantic. Marine Micropaleontology, 8(2), 121-139, https://doi.org/10.1016/0377-8398(83)90008-7
    Details
    Publication Date: 2023-07-10
    Description: The oxygen- and carbon-isotope compositions of planktic and benthic foraminifera and calcareous nannofossils from Middle Oligocene-Early Miocene Equatorial Atlantic sediments (DSDP Site 354) indicate two important paleoceanographic changes, in the Late Oligocene (foraminiferal Zone P.21) and in the Early Miocene (foraminiferal Zone N.5). The first change, reflected by a delta18O increase of 1.45‰ in Globigerina venezuelana, affected only intermediate pelagic and not surface, deep or bottom waters. The second change affected surface and intermediate waters, whereas deep and bottom waters showed only minor fluctuations. In the case of the former the isotope effect of the moderate ice accumulation on the Antarctic continent is amplified in the Equatorial Atlantic by changes in the circulation pattern. The latter paleoceanographic change, reflected by a significant increase in 18O in both planktic and benthic forms (about 1.0‰ and 0.5‰, respectively), may have been caused by ice volume increase and temperature decrease. Both oxygen- and carbon-isotope compositions indicate a marked depth-habitat stratification for planktic foraminifera and calcareous nannofossils. Three different dwelling groups are recognized: shallow Globigerinoides, Globoquadrina dehiscens, Globorotalia mayeri and nannofossils; intermediate Globigerina venezuelana; and deep Catapsydrax dissimilis. The comparison of foraminifera and calcareous nannofossils suggests that the isotopic compositions of nannofossils are generally controlled by the same parameters which control the isotopic composition of shallow-dwelling foraminifera, but the former are more enriched in 18O.
    Keywords: 39-354; Catapsydrax dissimilis, δ13C; Catapsydrax dissimilis, δ18O; Cibicidoides pseudoungerianus, δ13C; Cibicidoides pseudoungerianus, δ18O; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Foraminifera, benthic δ13C; Foraminifera, benthic δ18O; Globigerina venezuelana, δ13C; Globigerina venezuelana, δ18O; Globigerinoides ruber, δ13C; Globigerinoides ruber, δ18O; Globigerinoides trilobus, δ13C; Globigerinoides trilobus, δ18O; Globocassidulina subglobosa, δ13C; Globocassidulina subglobosa, δ18O; Globoquadrina dehiscens, δ13C; Globoquadrina dehiscens, δ18O; Globoquadrina globularis, δ13C; Globoquadrina globularis, δ18O; Globorotalia kugleri, δ13C; Globorotalia kugleri, δ18O; Globorotalia mayeri, δ13C; Globorotalia mayeri, δ18O; Globorotalia opima opima, δ13C; Globorotalia opima opima, δ18O; Glomar Challenger; Leg39; North Atlantic/CONT RISE; ORDINAL NUMBER; Oridorsalis umbonatus, δ13C; Oridorsalis umbonatus, δ18O; Planktic foraminifera zone; Sample code/label; Stilostomella spp., δ13C; Stilostomella spp., δ18O; δ13C, carbonate; δ18O, carbonate
    Type: Dataset
    Format: text/tab-separated-values, 415 data points
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  • 6
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    Meteorological synoptical observations during Meteor cruise M60 (1982)
    PANGAEA
    In:  Deutscher Wetterdienst/Seewetteramt, Offenbach/Hamburg
    Details
    Publication Date: 2023-07-10
    Keywords: Characteristic of barometric tendency; Cloud base height; CT; DATE/TIME; Dew/frost point; Direction of first swell waves; Height of first swell waves; Height of waves; High cloud; Horizontal visibility; Humidity, relative; Indicator for inclusion or ommission of precipitation data; Indicator for source and units of wind speed; LATITUDE; LONGITUDE; Low/middle cloud amount; Low cloud; M60; M60-track; Mean ships course; Mean ships speed; Meteor (1964); Middle cloud; Past weather1; Past weather2; Periode of first swell waves; Present weather; Pressure, atmospheric; Quality control indicator for (a); Quality control indicator for (clouds); Quality control indicator for (dd); Quality control indicator for (Ds); Quality control indicator for (ff); Quality control indicator for (h); Quality control indicator for (HwHw); Quality control indicator for (iR,RRR,tR); Quality control indicator for (ppp); Quality control indicator for (PPPP); Quality control indicator for (PwPw); Quality control indicator for (swell); Quality control indicator for (tbtbtb); Quality control indicator for (TdTdTd); Quality control indicator for (TTT); Quality control indicator for (TwTwTw); Quality control indicator for (Vs); Quality control indicator for (VV); Quality control indicator for (weather); SUBTROPEX 82; Temperature, air; Temperature, air, wet bulb; Temperature, water; Total cloud amount; Underway cruise track measurements; Wave period; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 20406 data points
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  • 7
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    Meteorological synoptical observations during Meteor cruise M68 (1984)
    PANGAEA
    In:  Deutscher Wetterdienst/Seewetteramt, Offenbach/Hamburg
    Details
    Publication Date: 2023-07-10
    Keywords: Characteristic of barometric tendency; Cloud base height; CT; DATE/TIME; Dew/frost point; Direction of first swell waves; Height of first swell waves; Height of waves; High cloud; Horizontal visibility; Humidity, relative; Indicator for inclusion or ommission of precipitation data; Indicator for source and units of wind speed; LATITUDE; LONGITUDE; Low/middle cloud amount; Low cloud; M68; M68-track; Mean ships course; Mean ships speed; Meteor (1964); Middle cloud; NOAMP II; Past weather1; Past weather2; Periode of first swell waves; Present weather; Pressure, atmospheric; Quality control indicator for (a); Quality control indicator for (clouds); Quality control indicator for (dd); Quality control indicator for (Ds); Quality control indicator for (ff); Quality control indicator for (h); Quality control indicator for (HwHw); Quality control indicator for (iR,RRR,tR); Quality control indicator for (ppp); Quality control indicator for (PPPP); Quality control indicator for (PwPw); Quality control indicator for (swell); Quality control indicator for (tbtbtb); Quality control indicator for (TdTdTd); Quality control indicator for (TTT); Quality control indicator for (TwTwTw); Quality control indicator for (Vs); Quality control indicator for (VV); Quality control indicator for (weather); Temperature, air; Temperature, air, wet bulb; Temperature, water; Total cloud amount; Underway cruise track measurements; Wave period; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 10807 data points
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  • 8
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    Meteorological synoptical observations during Meteor cruise M70 (1985)
    PANGAEA
    In:  Deutscher Wetterdienst/Seewetteramt, Offenbach/Hamburg
    Details
    Publication Date: 2023-07-10
    Keywords: Characteristic of barometric tendency; Cloud base height; CT; DATE/TIME; Dew/frost point; Direction of first swell waves; Height of first swell waves; Height of waves; High cloud; Horizontal visibility; Humidity, relative; Indicator for inclusion or ommission of precipitation data; Indicator for source and units of wind speed; Indicator for type of station operation and inclusion of weather data; LATITUDE; LONGITUDE; Low/middle cloud amount; Low cloud; M70; M70-track; Mean ships course; Mean ships speed; Meteor (1964); Middle cloud; NOAMP IV; Past weather1; Past weather2; Periode of first swell waves; Present weather; Pressure, atmospheric; Quality control indicator for (a); Quality control indicator for (clouds); Quality control indicator for (dd); Quality control indicator for (Ds); Quality control indicator for (ff); Quality control indicator for (h); Quality control indicator for (HwHw); Quality control indicator for (iR,RRR,tR); Quality control indicator for (ppp); Quality control indicator for (PPPP); Quality control indicator for (PwPw); Quality control indicator for (swell); Quality control indicator for (tbtbtb); Quality control indicator for (TdTdTd); Quality control indicator for (TTT); Quality control indicator for (TwTwTw); Quality control indicator for (Vs); Quality control indicator for (VV); Quality control indicator for (weather); Temperature, air; Temperature, air, wet bulb; Temperature, water; Total cloud amount; Underway cruise track measurements; Wave period; Wind direction; Wind speed
    Type: Dataset
    Format: text/tab-separated-values, 21162 data points
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  • 9
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    (Table 1) Composite surface scraping samples and Coscinodiscus nodulifer abundance from DSDP Hole 64-480 (1982)
    PANGAEA
    In:  Supplement to: Murray, David W; Schrader, Hans-Jürgen (1982): The size distribution of the centric diatom Coscinodiscus nodulifer, Site 480, Guaymas Basin Slope, Gulf of California. In: Curray, JR; Moore, DG; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 64, 1239-1244, https://doi.org/10.2973/dsdp.proc.64.163.1982
    Details
    Publication Date: 2023-07-10
    Description: Analysis of individual laminae in Recent sediments from the slopes of the Guaymas Basin indicates an increased abundance of the larger sizes (〉60 µm) of Coscinodiscus nodulifer when upwelling conditions persist over the depositional site and an increase of the smaller sizes (〈60 µm) when nonupwelling conditions exist. The size distributions of C. nodulifer in 10-cm composite samples from Hole 480 show a greater abundance of the large sizes (〉60 µm) associated with well-laminated sections and more of the smaller sizes (〈60 µm) in samples from the homogeneous sections. We have tentatively correlated the pronounced homogeneous zones with late Pleistocene glacial periods. These results indicate a persistence of nonupwelling conditions over Hole 480 during glacial periods (homogeneous zones) and a predominance of upwelling conditions during interglacial periods (laminated zones). Other evidence from diatom and silicoflagellate floral analysis seems to support these preliminary conclusions.
    Keywords: 64-480; Coscinodiscus nodulifer; Deep Sea Drilling Project; Description; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg64; North Pacific/Gulf of California/BASIN; Sample code/label; Smear slide analysis
    Type: Dataset
    Format: text/tab-separated-values, 96 data points
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  • 10
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    (Table 2) Geochemistry at DSDP Holes 62-464 and 62-465A (1981)
    PANGAEA
    In:  Supplement to: Seifert, Karl E; Vallier, Tracy L; Windom, Kenneth E; Morgan, S R (1981): Geochemistry and petrology of igneous rocks, Deep Sea Drilling Project Leg 62. In: Thiede, J; Vallier, TL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 62, 945-953, https://doi.org/10.2973/dsdp.proc.62.149.1981
    Details
    Publication Date: 2023-07-10
    Description: Igneous rocks were recovered from three sites on Hess Rise during Deep Sea Drilling Project Leg 62: altered basalt at Site 464, at the northern end of Hess Rise; and altered trachyte from Site 465, and rounded basalt pebbles in upper Albian to middle Miocene sediments from Site 466, both at the southern end of Hess Rise. Major-, minor-, and trace-element data for basalt from Hole 464 are consistent with these rocks being transitional tholeiites that have undergone low-temperature alteration by reaction with sea water. Trachyte from Hole 465A exhibits as many as three generations of plagioclase along with potash feldspar that are flow aligned in groundmasses alterted to smectites and random mixed-layer clays. Textural evidence indicates that these rocks were eruped subaerially. Chemical data show a range of values when plotted on two- and three-component variation diagrams. The observed variations may result in part from differentiation, but they also reflect the high degree of alteration. Several oxides and elements show strong correlation with H2O+: K2O, SiO2, Rb and Lu decrease and MgO increases with increasing H2O+. These trends, except for that of Lu, are consistent with experimentally determined changes in chemistry that accompany alteration. The trend for Lu has not been previously reported; it may result from a more-intense alteration of the HREE-rich mafic minerals than of the LREE-rich feldspars. Despite their alteration, the trachytes compare favorably with alkalic differentiates from oceanic islands. We interpret Hess Rise as a volcanic platform formed by eruption of off-ridge volcanic rocks onto MORB oceanic crust during the Aptian and Albian stages, after the basement had migrated away from the spreading center. By analogy with present oceanic islands, we propose that early tholeiitic basalts were followed by alkalic basalts and their differentiation products (trachytes), producing a volcanic archipelago of islands and seamounts. Subsequent tectonism and subsidence led to the present state of Hess Rise.
    Keywords: 62-464; 62-465A; Aluminium oxide; Barium; Calcium oxide; Carbon dioxide; Cerium; Cobalt; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Europium; Event label; Glomar Challenger; Hafnium; Instrumental neutron activation analysis (INAA); Iron oxide, Fe2O3; Iron oxide, FeO; Lanthanum; Leg62; Lutetium; Magnesium oxide; Manganese oxide; North Pacific/CONT RISE; Phosphorus pentoxide; Potassium oxide; Rubidium; Samarium; Sample code/label; Sample ID; Scandium; Silicon dioxide; Sodium oxide; Strontium; Tantalum; Terbium; Thorium; Titanium dioxide; Total; Water in rock; X-ray fluorescence (XRF); Ytterbium; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 702 data points
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