45,125 Works

Age model of sediment core GeoB4213-2

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4218-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4225-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4228-3

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4230-2

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4206-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB4233-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB5537-3

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB5541-4

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB5547-3

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB6006-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

Age model of sediment core GeoB6011-1

Holger Kuhlmann, Tim Freudenthal, Peer Helmke & Helge Meggers

(Fig. 6) Coral content of sediment core GeoB6730-1

Boris Dorschel, Dierk Hebbeln, Andres Rüggeberg & Wolf-Christian Dullo
Area-data were transformed in weight percentage with an average coral density of 2.66 g/cm≈.

Trace element ratios of Cibicidoides wuellerstorfi from sediment core RC13-114 (Appendix A), supplement to: Marchitto, Thomas M; Lynch-Stieglitz, Jean; Hemming, Sidney R (2005): Deep Pacific CaCO3 compensation and glacial-interglacial atmospheric CO2. Earth and Planetary Science Letters, 231(3-4), 317-336

Thomas M Marchitto, Jean Lynch-Stieglitz & Sidney R Hemming
Benthic foraminiferal delta13C suggests that there was a net shift of isotopically light metabolic CO2 from the upper ocean into the deep ocean during the last glacial period. According to the 'CaCO3 compensation' hypothesis, this should have caused a transient drop in deep ocean CO3[2-] that was eventually reversed by seafloor dissolution of CaCO3. The resulting increase in whole-ocean pH may have had a significant impact on atmospheric CO2, compounding any decrease that was due...

Estimation of sea surface temperatures and salinity of ODP Site 177-1089 (Appendix A), supplement to: Cortese, Giuseppe; Abelmann, Andrea; Gersonde, Rainer (2004): A glacial warm water anomaly in the subantarctic Atlantic Ocean, near the Agulhas Retroflection. Earth and Planetary Science Letters, 222(3-4), 767-778

Giuseppe Cortese, Andrea Abelmann & Rainer Gersonde
ODP Site 1089 is optimally located in order to monitor the occurrence of maxima in Agulhas heat and salt spillage from the Indian to the Atlantic Ocean. Radiolarian-based paleotemperature transfer functions allowed to reconstruct the climatic history for the last 450 kyr at this location. A warm sea surface temperature anomaly during Marine Isotope Stage (MIS) 10 was recognized and traced to other oceanic records along the surface branch of the global thermohaline (THC) circulation...

Oxygen isotope record of Globorotalia tumida and Globigerinoides sacculifer in sediments at ODP Site 130-806, supplement to: Billups, Katharina; Ravelo, Ana Christina; Zachos, James C; Norris, Richard D (1999): Link between oceanic heat transport, thermohaline circulation, and the Intertropical Convergence Zone in the early Pliocene Atlantic. Geology, 27(4), 319-322

Katharina Billups, Ana Christina Ravelo, James C Zachos & Richard D Norris
Planktonic foraminiferal oxygen isotope records from the western and eastern tropical Pacific and Atlantic Oceans suggest a southward shift in the Intertropical Convergence Zone toward its modern location between 4.4 and 4.3 Ma. A concomitant shift in the carbon isotope compositions of Atlantic benthic foraminifera provides strong evidence for an increased thermohaline overturn at this time. We suggest that the southward shift of the Intertropical Convergence Zone and associated change in trade-wind circulation altered equatorial...

Sr, Nd and Pb isotopic ratios of igneous rocks from DSDP holes (Table 1), supplement to: Hickey-Vargas, Rosemary (1991): Isotope characteristics of submarine lavas from the Philippine Sea: implications for the origin of arc and basin magmas of the Philippine tectonic plate. Earth and Planetary Science Letters, 107(2), 290-304

Rosemary Hickey-Vargas
Igneous rocks from the Philippine tectonic plate recovered on Deep Sea Drilling Project Legs 31, 58 and 59 have been analyzed for Sr, Nd and Pb isotope ratios. Samples include rocks from the West Philippine Basin, Daito Basin and Benham Rise (40-60 m.y.), the Palau-Kyushu Ridge (29-44 m.y.) and the Parece Vela and Shikoku basins (17-30 m.y.). Samples from the West Philippine, Parece Vela and Shikoku basins are MORB (mid-ocean ridge basalt)-like with 87Sr/86Sr =...

Pb concentrations, Pb isotopic composition, and amount of metalliferous components in pelagic sediments from the Pacific Ocean, supplement to: Peucker-Ehrenbrink, Bernhard; Hofmann, Albrecht W; Hart, Stanley R (1994): Hydrothermal lead transfer from mantle to continental crust: the role of metalliferous sediments. Earth and Planetary Science Letters, 125(1-4), 129-142

Bernhard Peucker-Ehrenbrink, Albrecht W Hofmann & Stanley R Hart
The amount of lead annually transferred from oceanic crust to metalliferous sediments was estimated in order to test the hypothesis that a non-magmatic flux of lead causes the Pb surplus in the continental crust. A Pb surplus has been inferred from global crust-mantle lead mass balances derived from lead concentration correlations with other trace elements and from lead isotope systematics in oceanic basalts. DSDP/ODP data on the amount of metalliferous sediments in the Pacific Ocean...

10Be and 9Be concentrations and ratios of hydroxylamine leachable and residual phases of DSDP Site 64-477 (Table 1), supplement to: Bourlès, Didier L; Brown, E T; Raisbeck, Grant M; Yiou, Françoise; Gieskes, Joris M (1992): Beryllium isotope geochemistry of hydrothermally altered sediments. Earth and Planetary Science Letters, 109(1-2), 47-56

Didier L Bourlès, E T Brown, Grant M Raisbeck, Françoise Yiou & Joris M Gieskes
Profiles of both10Be and9Be concentrations have been measured in sediments from the DSDP, Leg 64, Site 477 core. Established in the deep Guaymas Basin, in an area of high heat flow, this site offers the opportunity of studying hydrothermal alteration induced by two distinct hydrothermal systems, those caused (I) by the intrusion of hot sills into porous sediments and (I) by heat associated with a magma chamber.The results show that the distribution of both beryllium...

Figure 2: IP25 measurements and accumulation rates of sediment core PS2837-5, supplement to: Müller, Juliane; Massé, Guillaume; Stein, Ruediger; Belt, Simon T (2009): Variability of sea-ice conditions in the Fram Strait over the past 30,000 years. Nature Geoscience, 2, 772-227

Juliane Müller, Guillaume Massé, Ruediger Stein & Simon T Belt
Sea ice is a critical component of the climate system: variations in sea-ice cover affect the albedo of polar regions, and also the rate of deepwater formation. Changes in the sea-ice cover of the North Atlantic Ocean are thought to have been related to abrupt climate changes throughout the last glacial termination, but reconstructions of sea-ice conditions are rare. Here we use the sedimentary abundance of the IP25 and brassicasterol biomarkers, produced by sea-ice-associated diatoms...

Pollen analysis of ODP Hole 117-720A (Appendix B), supplement to: Yoshinori, Yasuda; Niitsuma, Nobuaki; Hayashida, Akira (1991): A pollen analysis of the Indus Deep Sea Fan from Site 720 cores. In: Prell, WL; Niitsuma, N; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 117, 283-290

Yasuda Yoshinori, Nobuaki Niitsuma & Akira Hayashida
Pollen analytical studies of the ODP Site 720 cores revealed the wide development of the coniferous forest, which mainly composed by Pinus, Picea, Abies and Cedrus deodara, along the Indus river since the early Pleistocene.

Distribution of Cretaceous and early Danian planktonic foraminifera in ODP Hole 119-738C (Table 1), supplement to: Huber, Brian T (1991): Maestrichtian planktonic foraminifer biostratigraphy and the Cretaceous/Tertiary boundary at Hole 738C, Kerguelen Plateau (Southern Indian Ocean). In: Barron, J; Larsen, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 119, 451-465

Brian T Huber
A biostratigraphically complete upper Maestrichtian-Danian sequence was recovered at ODP Leg 119 Site 738 on the southern Kerguelen Plateau (62°S). Planktonic foraminifers are abundant and well to moderately preserved in all upper Maestrichtian samples to within 6 cm of the Cretaceous/Tertiary boundary, where foraminifers are rare and poorly preserved due to increased sediment lithification. Lowermost Danian samples are also poorly preserved, but specimen abundance is sufficient for preliminary quantitative biostratigraphic analysis. Despite the poor foraminifer...

Clay mineral distribution in sediment core AND-2A, supplement to: Franke, Daniel; Ehrmann, Werner (2010): Neogene clay mineral assemblages in the AND-2A drill core (McMurdo Sound, Antarctica) and their implications for environmental change. Palaeogeography, Palaeoclimatology, Palaeoecology, 286, 55-65

Daniel Franke & Werner Ehrmann
Clay mineral assemblages in sediments from ANDRILL drill core AND-2A were used to reconstruct the Neogene palaeoenvironment. For the first time a clay mineral data set can be presented for southern McMurdo Sound, Ross Sea, Antarctica, that covers an expanded and fairly continuous Lower and Middle Miocene section. Although the occurrence of some authigenic smectites, zeolites and opal-CT documents diagenetic processes, the clay mineral assemblages allow a subdivision of the core into three intervals that...

Vertical distribution of macrofossil taxa in ODP Hole 122-764B, supplement to: Sarti, Massimo; Russo, Antonio; Bosellini, Francesca R (1992): Rhaetian Strata, Wombat Plateau: analysis of fossil communities as a key to paleoenvironmental change. In: von Rad, U; Haq, BU; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 122, 181-195

Massimo Sarti, Antonio Russo & Francesca R Bosellini
Rhaetian fossil reef was penetrated on the Wombat Plateau (northern Exmouth Plateau, northwest Australia). A study of fossil populations and associated sediment types showed a vertical transition from a sponge-dominated to a coral-dominated community, with associated hydrozoans-tabulozoans. The first colonization of the mobile ground was undertaken by sponges, whereas the coral community assemblage constituted the main core of a pinnacle reef complex, dominated by Retiophyllia in the lower part and by Astreomorpha associations upward. This...

Seawater carbonate chemistry and calcification during experiments with a coral Madracis auretenra, 2010, supplement to: Jury, Christopher P; Whitehead, Robert F; Szmant, A M (2010): Effects of variations in carbonate chemistry on the calcification rates of Madracis auretenra (= Madracis mirabilis sensu Wells, 1973): bicarbonate concentrations best predict calcification rates. Global Change Biology, 16(5), 1632-1644

Christopher P Jury, Robert F Whitehead & A M Szmant
Physiological data and models of coral calcification indicate that corals utilize a combination of seawater bicarbonate and (mainly) respiratory CO2 for calcification, not seawater carbonate. However, a number of investigators are attributing observed negative effects of experimental seawater acidification by CO2 or hydrochloric acid additions to a reduction in seawater carbonate ion concentration and thus aragonite saturation state. Thus, there is a discrepancy between the physiological and geochemical views of coral biomineralization. Furthermore, not all...

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