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  • 1
    Series available for loan
    Series available for loan
    Motion of the Hawaiian Hotspot: [Elektronische Ressource] : a paleomagnetic test : covering Leg 197 of the cruises of the drilling vessel JOIDES Resolution, Yokohama, Japan, to Yokohama, Japan, Sites 1203 - 1206, 1 July - 27 August 2001 (2006)
    College Station, Tex.
    Associated volumes
    Details Availability
    Call number: 13/ZSP-607(197)
    In: Proceedings of the ocean drilling program [Elektronische Ressource]
    Type of Medium: Series available for loan
    Pages: 1 CD-ROM , 1 Booklet (xv, 39, 16 S.)
    Series Statement: Proceedings of the ocean drilling program [Elektronische Ressource] : Scientific results 197.2001
    URL: http://www-odp.tamu.edu/publications/197_SR/197TOC.HTM
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
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    Petrogenesis of lava from Christmas Island, Northeast Indian Ocean: implications for the nature of recycled components in non-plume intraplate settings (2022)
    MDPI
    Details
    Publication Date: 2022-10-26
    Description: © The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Falloon, T., Hoernle, K., Schaefer, B., Bindeman, I., Hart, S., Garbe-Schonberg, D., & Duncan, R. Petrogenesis of lava from Christmas Island, Northeast Indian Ocean: implications for the nature of recycled components in non-plume intraplate settings. Geosciences, 12(3), (2022): 118, https://doi.org/10.3390/geosciences12030118.
    Description: Lava samples from the Christmas Island Seamount Province (CHRISP) record an extreme range in enriched mantle (EM) type Sr-Nd-Pb-Hf isotope signatures. Here we report osmium isotope data obtained on four samples from the youngest, Pliocene petit-spot phase (Upper Volcanic Series, UVS; ~4.4 Ma), and four samples from the earlier, Eocene (Lower Volcanic Series, LVS; ~40 Ma) shield building phase of Christmas Island. Osmium concentrations are low (5–82 ppt) with initial Os isotopic values (187Os/188Osi) ranging from (0.1230–0.1679). Along with additional new geochemical data (major and trace elements, Sr-Nd-Pb isotopes, olivine δ18O values), we demonstrate the following: (1) The UVS is consistent with melting of shallow Indian mid-ocean ridge basalt (MORB) mantle enriched with both lower continental crust (LCC) and subcontinental lithospheric mantle (SCLM) components; and (2) The LVS is consistent with recycling of SCLM components related to Gondwana break-up. The SCLM component has FOZO or HIMU like characteristics. One of the LVS samples has less radiogenic Os (γOs –3.4) and provides evidence for the presence of ancient SCLM in the source. The geochemistry of the Christmas Island lava series supports the idea that continental breakup causes shallow recycling of lithospheric and lower crustal components into the ambient MORB mantle.
    Description: This research received no external funding.
    Keywords: Osmium isotopes ; Petit-spot volcanism ; Olivine oxygen isotopes ; Intraplate volcanism ; Christmas Island ; Indian Ocean ; CHRISP ; Crust recycling ; Lithosphere recycling ; DUPAL
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 3
    Electronic Resource
    Electronic Resource
    Drying Properties of Linseed Oil Treated with Cobalt, Lead and Manganese Elaeostearates (1915)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 7 (1915), S. 202-205 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50075a007
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  • 4
    Electronic Resource
    Electronic Resource
    The geology and age of Peter I 0y, Antarctica (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 9 (1991), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The island Peter I 0y is located in the BeUinghausen Sea 400 km off the coast of West Antarctica. It is situated at the transition between oceanic and contintental crust close to a former transform fault, the Tharp fracture zone. The island is completely volcanic, consisting of predominantly alkali basalt and hawaiite and some more evolved rocks. Sampling done by the Aurora expedition in 1987 has made dating and detailed petrological studies possible. The island appears to be much younger (〈0.5 Ma) than previously believed. However, the volcanic activity responsible for this oceanic island may have lasted for 10-20 Ma. Volcanic activity at the island thus took place at the same time as post-subduction rift-related volcanism took place along the Antarctic Peninsula and in Marie Byrd Land. However, the petrologic data indicate that this may be coincidental and that the Peter I 0y activity is independent and related to transtensional rifting along the Tharp fracture zone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1991.tb00404.x
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  • 5
    Electronic Resource
    Electronic Resource
    Emergence and petrology of the Mendocino Ridge (1993)
    Springer
    Marine geophysical researches 15 (1993), S. 283-296 
    Details
    ISSN: 1573-0581
    Keywords: Mendocino Fracture Zone ; Gorda Ridge ; Juan de Fuca Plate ; Pacific Plate ; basalt ; K-Ar date ; basalt composition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The Mendocino Fracture Zone, a 3,000-km-long transform fault, extends from the San Andreas Fault at Cape Mendocino, California due west into the central Pacific basin. The shallow crest of this fracture zone, known as the Mendocino Ridge, rises to within 1,100 m of the sea surface at 270 km west of the California Coast. Rounded basalt pebbles and cobbles, indicative of a beach environment, are the dominant lithology at two locations on the crest of Mendocino Ridge and a40Ar/39 Ar incremental heating age of 11.0 ± 1.0 million years was determined for one of the these cobbles. This basalt must have been erupted on the Gorda Ridge because the crust immediately to the south of the fracture zone is older than 27 Ma. This age also implies that the crest of Mendocino Ridge was at sea level and would have blocked Pacific Ocean eastern boundary currents and affected the climate of the North American continent at some time since the late Miocene. Basalts from the Mendocino Fracture Zone (MFZ) are FeTi basalts similar to those commonly found at intersections of mid-ocean ridges and fracture zones. These basalts are chemically distinct from the nearby Gorda Ridge but they could have been derived from the same mantle source as the Gorda Ridge basalts. The location of the 11 Ma basalt suggests that Mendocino Ridge was transferred from the Gorda Plate to the Pacific Plate and the southern end of Gorda Ridge was truncated by a northward jump in the transform fault of MFZ.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01982386
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  • 6
    Electronic Resource
    Electronic Resource
    Young basalts of the central Washington Cascades, flux melting of the mantle, and trace element signatures of primary arc magmas (2000)
    Springer
    Contributions to mineralogy and petrology 138 (2000), S. 249-264 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Basaltic lavas from the Three Sisters and Dalles Lakes were erupted from two isolated vents in the central Washington Cascades at 370–400 ka and 2.2 Ma, respectively, and have distinct trace element compositions that exemplify an important and poorly understood feature of arc basalts. The Three Sisters lavas are calc-alkaline basalts (CAB) with trace element compositions typical of most arc magmas: high ratios of large-ion-lithophile to high-field-strength elements (LILE/HFSE), and strong negative Nb and Ta anomalies. In contrast, the Dalles Lakes lavas have relatively low LILE/HFSE and no Nb or Ta anomalies, similar to ocean-island basalts (OIB). Nearly all Washington Cascade basalts with high to moderate incompatible element concentrations show this CAB or OIB-like compositional distinction, and there is pronounced divergence between the two magma types with a large compositional gap between them. We show that this trace element distinction can be easily explained by a simple model of flux-melting of the mantle wedge by a fluid-rich subduction component (SC), in which the degree of melting (F) of the peridotite source is correlated with the amount of SC added to it. Distinctive CAB and OIB-like trace element compositions are best explained by a flux-melting model in which dF/dSC decreases with increasing F, consistent with isenthalpic (heat-balanced) melting. In the context of this model, CAB trace element signatures simply reflect large degrees of melting of strongly SC-fluxed peridotite along relatively low dF/dSC melting trends, consistent with derivation from relatively cold mantle. Under other conditions (i.e., small degrees of melting or large degrees of melting of weakly SC-fluxed peridotite [high dF/dSC]), either OIB- or MORB (mid-ocean ridge basalt)-like compositions are produced. Trace element and isotopic compositions of Washington Cascade basalts are easily modeled by a correlation between SC and F across a range of mantle temperatures. This implies that the dominant cause of arc magmatism in this region is flux melting of the mantle wedge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004100050561
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  • 7
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    Minerals and geochemistry abundance and occurance, as well as K-Ar determinations for DSDP Site 92-597 basalts
    PANGAEA
    In:  Supplement to: Peterson, Curt; Duncan, Robert A; Scheidegger, Kenneth F (1986): Sequence and longevity of basalt alteration at Deep Sea Drilling Project Site 597. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 505-515, https://doi.org/10.2973/dsdp.proc.92.132.1986
    Details
    Publication Date: 2023-05-12
    Description: Preliminary studies of hydrothermally altered massive basalts formed at the fast-spreading Mendoza Rise and recovered from DSDP Holes 597B and 597C indicate the presence of three secondary mineral assemblages which formed in the following order: (1) trioctahedral chlorite and talc, (2) goethite and smectite, and (3) calcite and celadonite. The sequential precipitation of these mineral assemblages denotes high water:rock ratios and time-varying conditions of temperature (early 〉200°C to late 〈30°C) and state of oxidation (early nonoxidative to late oxidative). A decrease in the relative proportion of oxidative mineral assemblages with depth to 70 m in Site 597 basement indicates a zone of oxidative alteration that became shallower with time as the deeper, more constricted fracture systems were filled by secondary mineralization. In this report we present the first results of the K-Ar dating of celadonite formation age; celadonite formation reflects end-stage hydrothermal alteration in Site 597 basement. Three celadonite dates obtained from Site 597 samples include 13.1 ± 0.3 m.y. from 17 m basement depth (Hole 597B), 19.9 ± 0.4 m.y. from 18 m basement depth (Hole 597C), and 19.3 ± 1.6 m.y. from 60 m basement depth (Hole 597C). The age of host rock crystallization (28.6 m.y.) and the K-Ar dates of celadonite formation establish that hydrothermal alteration in the upper 70 m of Site 597 basement continued for at least 10 m.y. and possibly as long as 16 m.y. after basalt crystallization at the ridge crest. Assuming a half-spreading rate of 55 km/m.y., we calculate that hydrothermal circulation was active in shallow basement at a distance of at least 550 km off ridge crest and possibly as far as 1000 km off ridge crest.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 8
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    (Table 1) 40Ar/39Ar plateau and isochron ages from on-land Caribbean plateau sites
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: AGE; Age, dated; Age, dated standard deviation; Age, error; Area/locality; Argon-39; Argon-40/Argon-36; Argon-40/Argon-36, standard deviation; F-distribution; Isotope ratio mass spectrometry; LATITUDE; LONGITUDE; Number; Sample code/label; Sample comment
    Type: Dataset
    Format: text/tab-separated-values, 169 data points
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  • 9
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    (Table 1) 40Ar/39Ar plateau and isochron ages from DSDP Leg 15 holes
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 15-146; 15-150; AGE; Age, dated; Age, dated standard deviation; Age, error; Argon-39; Argon-40/Argon-36; Argon-40/Argon-36, standard deviation; Caribbean Sea/BASIN; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; F-distribution; Glomar Challenger; Isotope ratio mass spectrometry; Leg15; Number; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 27 data points
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  • 10
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    (Table DR2) Nd-Pb-Sr isotope ratios and isotope-dilution concentrations, DSDP Hole 62-464
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 62-464; Calculated; Deep Sea Drilling Project; DEPTH, sediment/rock; Double-spike method; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Lead; Lead-206/Lead-204 ratio; Lead-207/Lead-204 ratio; Lead-208/Lead-204 ratio; Leg62; Neodymium; Neodymium-143/Neodymium-144 ratio; North Pacific/CONT RISE; Rubidium; Samarium; Sample code/label; Sample type; Strontium; Strontium-87/Strontium-86 ratio; Thermal-ionization multicollector mass spectrometer VG Sector; Thorium; Uranium; ε-Neodymium (0); ε-Neodymium (T)
    Type: Dataset
    Format: text/tab-separated-values, 21 data points
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