2,246 Works

Mineral and foraminifer composition of sediments across the Paleocene/Eocene Thermal Maximum from ODP Leg 198 sites, supplement to: Colosimo, Amanda B; Bralower, Timothy J; Zachos, James C (2006): Evidence for lysocline shoaling at the Paleocene/Eocene Thermal Maximum on Shatsky Rise, northwest Pacific. In: Bralower, TJ; Premoli Silva, I; Malone, MJ (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 198, 1-36

Amanda B Colosimo, Timothy J Bralower & James C Zachos
The Paleocene/Eocene Thermal Maximum (PETM) was a transient interval of global warming ~55 m.y. ago associated with transformation of ecosystems and changes in carbon cycling. The event was caused by the input of massive amounts of CO2 or CH4 to the ocean-atmosphere system. Rapid shoaling of the lysocline and calcite compensation depth (CCD) is a predicted response of CO2 or CH4 input; however, the extent of this shoaling is poorly constrained. Investigation of Ocean Drilling...

Pollen analysis of soil samples from the A.D. 79 level. Boscoreale, Oplontis, and Pompeii

Eberhard Grüger
Fifty samples of Roman time soil preserved under the thick ash layer of the A.D.79 eruption of Mt Vesuvius were studied by pollen analysis: 33 samples from a former vineyard surrounding a Villa Rustica at Boscoreale (excavation site 40 x 50 m), 13 samples taken along the 60 m long swimming pool in the sculpture garden of the Villa of Poppaea at Oplontis, and four samples from the formal garden (12.4 x 17.5 m) of...

Geochemical and nannofossil analyses of Cenomanian/Turonian sediments of DSDP Hole 75-530A, supplement to: Forster, Astrid; Kuypers, Marcel MM; Turgeon, Steven C; Brumsack, Hans-Jürgen; Petrizzo, Maria Rose; Sinninghe Damsté, Jaap S (2008): The Cenomanian/Turonian oceanic anoxic event in the South Atlantic: New insights from a geochemical study of DSDP Site 530A. Palaeogeography, Palaeoclimatology, Palaeoecology, 267(3-4), 256-283

Astrid Forster, Marcel MM Kuypers, Steven C Turgeon, Hans-Jürgen Brumsack, Maria Rose Petrizzo & Jaap S Sinninghe Damsté
One of the key objectives of Deep Sea Drilling Project (DSDP) Leg 75 was to shed light on the underlying causes of Cretaceous oceanic anoxia in the South Atlantic by addressing two major hypotheses: productivity productivity-driven anoxia vs. enhanced ocean stratification leading to preservation of organic matter and black shale deposition. Here we present a detailed geochemical dataset from sediments deposited during the Cenomanian/Turonian (C/T) transition and the global oceanic anoxic event 2 (OAE 2)...

Thallium isotope composition in pyrites, supplement to: Nielsen, Sune G; Goff, Matt; Hesselbo, Stephen P; Jenkyns, Hugh C; LaRowe, Doug E; Lee, Cin-Ty Aeolus (2011): Thallium isotopes in early diagenetic pyrite - A paleoredox proxy? Geochimica et Cosmochimica Acta, 75(21), 6690-6704

Sune G Nielsen, Matt Goff, Stephen P Hesselbo, Hugh C Jenkyns, Doug E LaRowe & Cin-Ty Aeolus Lee
This paper presents the first study of Tl isotopes in early diagenetic pyrite. Measurements from two sections deposited during the Toarcian Ocean Anoxic Event (T-OAE, ~183 Ma) are compared with data from Late Neogene (<10 Ma) pyrite samples from ODP legs 165 and 167 that were deposited in relatively oxic marine environments. The Tl isotope compositions of Late Neogene pyrites are all significantly heavier than seawater, which most likely indicates that Tl in diagenetic pyrite...

Gotland Deep (Baltic Sea) independent age model based on Palaeomagnetic Secular Variation (PSV) and lead (Pb) deposition profiles, supplement to: Lougheed, Bryan C; Snowball, Ian; Moros, Matthias; Kabel, Karoline; Muscheler, Raimund; Virtasalo, Joonas J; Wacker, Lukas (2012): Using an independent geochronology based on palaeomagnetic secular variation (PSV) and atmospheric Pb deposition to date Baltic Sea sediments and infer 14C reservoir age. Quaternary Science Reviews, 42, 43-58

Bryan C Lougheed, Ian Snowball, Matthias Moros, Karoline Kabel, Raimund Muscheler, Joonas J Virtasalo & Lukas Wacker
Dating of sediment cores from the Baltic Sea has proven to be difficult due to uncertainties surrounding the 14C reservoir age and a scarcity of macrofossils suitable for dating. Here we present the results of multiple dating methods carried out on cores in the Gotland Deep area of the Baltic Sea. Particular emphasis is placed on the Littorina stage (8 ka ago to the present) of the Baltic Sea and possible changes in the 14C...

Stress tests of ODP Site 131-808 sediments, supplement to: Feeser, Volker; Moran, Kate; Brückmann, Warner (1993): Stress-regime-controlled yield and strength behavior of sediment from the frontal part of the Nankai accretionary prism. In: Hill, IA; Taira, A; Firth, JV; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 131, 261-273

Volker Feeser, Kate Moran & Warner Brückmann
Sediments undergoing accretion in trench-forearc systems are subjected to conditions of large lateral thrusting. This stress regime controls the mechanism of faulting as well as the yield and strength properties of the sediment. Understanding them is therefore crucial for the construction of quantitative models of sediment dynamics in convergent margin settings.For this purpose triaxial and oedometer tests were performed on six whole-round core samples recovered from Site 808 from depths between 173 and 705 mbsf....

Geochemical composition of surface snow, ice and debris from glaciers in Norway, Nepal and New Zealand, supplement to: Casey, Kimberly A (in review): Supraglacial dust and debris: geochemical compositions from glaciers in Svalbard, southern Norway, Nepal and New Zealand. Earth System Science Data Discussions, 5(1), 107-145

Kimberly A Casey
Alpine glacier samples were collected in four contrasting regions to measure supraglacial dust and debris geochemical composition. A total of 70 surface glacier ice, snow and debris samples were collected in 2009 and 2010 in Svalbard, Norway, Nepal and New Zealand. Trace elemental abundances in snow and ice samples were measured via inductively coupled plasma mass spectrometry (ICP-MS). Supraglacial debris mineral, bulk oxide and trace element composition were determined via X-ray diffraction (XRD) and X-ray...

Stable carbon and oxygen isotopes and Mg/Ca ratios of foraminifers from ODP Site 202-1241 sediments, supplement to: Steph, Silke; Tiedemann, Ralf; Groeneveld, Jeroen; Sturm, Arne; Nürnberg, Dirk (2006): Pliocene changes in tropical east Pacific upper ocean stratification: Response to tropical gateways? In: Tiedemann, R; Mix, AC; Richter, C; Ruddiman, WF (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 202, 1-51

Silke Steph, Ralf Tiedemann, Jeroen Groeneveld, Arne Sturm & Dirk Nürnberg
A combination of stable isotope records and Mg/Ca temperature estimates of four different planktonic foraminiferal species from Ocean Drilling Program Site 1241 allows differentiation between temperature and salinity changes in the tropical east Pacific (TEP) upper water column during the Pliocene (~5.7-2.1 Ma). The deviation of d18O records and Mg/Ca temperature estimates from thermocline-dwelling planktonic foraminifers suggests that local changes in salinity exerted a much stronger control on Pliocene TEP upper ocean water mass signatures...

Element oxides in basaltic glass fragments from ODP Hole 203-1243B, supplement to: Moberly, Ralph; Ishii, Teruaki; Garcia, M O; Ross, K; Artita, Kimberly (2006): Enriched, transitional, and normal mid-ocean-ridge basalt glass, ODP Leg 203. In: Schultz, A; Orcutt, JA; Davies, TA (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 203, 1-36

Ralph Moberly, Teruaki Ishii, M O Garcia, K Ross & Kimberly Artita
Sand-sized basaltic glass fragments were recovered in the liner of Core 203-1243B-19R, the deepest recovery from Hole 1243B. Microprobe analysis of 582 glassy cuttings cluster into five compositionally distinct groups, most of which are unlike the lithologic units described on board ship. Drilling operations intended to sweep cuttings from the caving hole and differences between the cuttings and geochemically distinct lithologic units of the upper part of the basement indicate that the cuttings came mainly,...

Rare earth elements in bottom sediments from the deeps of the Red Sea rift zone, supplement to: Butuzova, Galina Yu; Lyapunov, Sergey M (1995): Rare earth elements in hydrothermal-sedimentary deposits from the Red Sea. Translated from: Litologiya i Poleznyye Iskopaemyye, 1995, 1, 16-30, Lithology and Mineral Resources, N 1, 13-26

Galina Yu Butuzova & Sergey M Lyapunov
Analysis of rare earth element (REE) distribution and behavior in ore-bearing hydrothermal-sedimentary deposits from the Red Sea is carried out. Geochemical patterns and mechanisms of REE accumulation in metalliferous sediments of the open ocean and in deposits adjoined to areas of hydrothermal discharge are shown. Main factors, which determine composition of REE and the level of their accumulation in hydrothermal occurrences of the Red Sea, are considered.

Radiolarian biostratigraphy in sediments of ODP Site 202-1237, supplement to: Weber, Mysti; Pisias, Nicklas G (2006): Data report: Radiolarian biostratigraphy, ODP Leg 202, Site 1237. In: Tiedemann, R; Mix, AC; Richter, C; Ruddiman, WF (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 202, 1-29

Mysti Weber & Nicklas G Pisias
Site 1237 is located on Nazca Ridge ~140 km off the coast of Peru and thus within the offshore region of the Peru-Chile Current. A total of 83 samples were used to provide an initial radiolarian biostratigraphic framework for Site 1237; radiolarians are present to Sample 202-1237B-19H-2, 58-60 cm (186.45 meters composite depth [mcd]) and are of good to fair abundance and preservation. Site 1237 is influenced by both subtropical and northward-transported southern latitude waters,...

Radiocarbon ages and diatom abundance in cores GA306-BC4 and GA306-GC4 obtained during Galathea 3 cruise, West Greenland, supplement to: Sha, Longbin; Jiang, Hui; Knudsen, Karen Luise (2012): Diatom evidence of climatic change in Holsteinsborg Dyb, west of Greenland, during the last 1200 years. The Holocene, 22(3), 347-358

Longbin Sha, Hui Jiang & Karen Luise Knudsen
Diatom assemblages from Holsteinsborg Dyb on the West Greenland shelf were analysed with high temporal resolution for the last 1200 years. A high degree of consistency between changes in frequency of selected diatom species and instrumental data from the same area during the last 70 years confirms the reliability of diatoms (particularly sea-ice species and warm-water species) for the study of palaeoceanographic changes in this area. A general cooling trend with some fluctuations is marked...

Wet and dry resistivities along three orthogonal directions of ODP Holes 185-801C and 185-1149B, supplement to: Hirono, Tetsuro; Abrams, Lewis J (2002): Data report: Electrical resistivity and X-ray computed tomography measurements of sedimentary and igneous units from Hole 801C and Site 1149. In: Ludden, JN; Plank, T; Escutia, C (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 185, 1-18

Tetsuro Hirono & Lewis J Abrams
The results of shore-based three-axis resistivity and X-ray computed tomography (CT) measurements on cube-shaped samples recovered during Leg 185 are presented along with moisture and density, P-wave velocity, resistivity, and X-ray CT measurements on whole-round samples of representative lithologies from Site 1149. These measurements augment the standard suite of physical properties obtained during Leg 185 from the cube samples and samples obtained adjacent to the cut cubes. Both shipboard and shore-based measurements of physical properties...

Planktonic foraminifera of IODP Site 306-U1314, supplement to: Alonso-Garcia, Montserrat; Sierro, Francisco Javier; Flores, José-Abel (2011): Arctic front shifts in the subpolar North Atlantic during the Mid-Pleistocene (800–400 ka) and their implications for ocean circulation. Palaeogeography, Palaeoclimatology, Palaeoecology, 311(3-4), 268-280

Montserrat Alonso-Garcia, Francisco Javier Sierro & José-Abel Flores
Surface water conditions at the Integrated Ocean Drilling Program (IODP) Site U1314 (Southern Gardar Drift, 56° 21.8' N, 27° 53.3' W, 2820 m depth) were inferred using planktic foraminifer assemblages between Marine Isotope Stage (MIS) 19 and 11 (ca. 800-400 ka). Factor analysis of the planktic foraminifer assemblages suggests that the assemblage was controlled by three factors. The first factor (which explained 49% of the variance) is dominated by transitional and subpolar species and points...

Diatom biostratigraphy in sediments of ODP Sites 204-1251 and 204-1252, supplement to: Watanabe, Mahito (2006): Data report: Diatom biostratigraphy of Sites 1251 and 1252. In: Tréhu, AM; Bohrmann, G; Torres, ME; Colwell, FS (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 204, 1-10

Mahito Watanabe
Sites 1251 (44°34.213'N, 125°4.440'W; 1211 m water depth) and 1252 (44°35.167'N, 125°5.569'W; 1039 m water depth) were drilled on the eastern flank of the southern summit of Hydrate Ridge off Oregon in the northeast Pacific Ocean, where well-stratified sediments were deposited at a rapid rate. Unconformities and debris flow layers of middle Pleistocene age were found at both sites. Their ages are of great importance in constructing the geohistory of Hydrate Ridge. Detailed diatom biostratigraphy...

Composition and accumulation rates of eolian sediments in ODP Site 128-798, supplement to: Dersch, Michaela; Stein, Ruediger (1992): Pliocene-Pleistocene fluctuations in composition and accumulation rates of eolo-marine sediments at Site 798 (Oki Ridge, Sea of Japan) and climatic change: preliminary results. In: Pisciotto, KA; Ingle, JCJr.; von Breymann, MT; Barron, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(1), 409-422

Michaela Dersch & Ruediger Stein
Preliminary bulk and clay mineralogy data as determined by XRD as well as accumulation rates of quartz and feldspar at Oki Ridge Site 798 give important information about the paleoclimate in Asia and transport mechanisms of the siliciclastic sediment fraction. The (?uppermost Miocene/) lowermost Pliocene sediments at ODP Site 798 are characterized by high amounts of feldspars, smectites, and additionally abundant sand-sized terrigenous components. This is taken as an indication for turbiditycurrent-influenced deposition and a...

Ripple migration directions and grain fabric measurements on ODP Hole 210-1276A sediments, supplement to: Hiscott, Richard N (2007): Paleoflow directions of Albian basin-floor turbidity currents in the Newfoundland Basin. In Tucholke, B.E., Sibuet, J.-C., and Klaus, A. (Eds.), Proc. ODP, Sci. Results, 210 : College Station, TX (Ocean Drilling Program), 210, 1-27

Richard N Hiscott
Albian turbidites and intercalated shales were cored from ~1145 to 1700 meters below seafloor at Site 1276 in the Newfoundland Basin. Strata at this level dip ~2.5° seaward (toward an azimuth of ~130°) based on seismic profiles. In contrast, beds dip an average of ~10° in the cores. This higher apparent dip is the sum of the ~2.5° seaward dip and a measured hole deviation of 7.43°, which must be essentially in the same seaward...

Geochemistry and structural formulas of heavy minerals from sands and sandstones of ODP Leg 126 samples, supplement to: Fujioka, Kantaro; Saito, Saneatsu (1992): Composition of heavy minerals from sands and sandstones of the Izu-Bonin Arc, Leg 126. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 155-169

Kantaro Fujioka & Saneatsu Saito
Lower Oligocene to Pleistocene volcaniclastic sands and sandstones recovered around the Izu-Bonin Arc during Ocean Drilling Program Leg 126 were derived entirely from Izu-Bonin Arc volcanism. Individual grains consist of volcanic glass, pumice, scoria, basaltic or andesitic fragments, plagioclase, pyroxene, and minor olivine and hornblende. In Pliocene-Pleistocene samples plagioclase and heavy minerals in the volcaniclastic sands and sandstones are present in the following abundances: plagioclase > orthopyroxene > clinopyroxene > pigeonite > olivine. In contrast,...

BOREAS TF-11 SSA Fen Leaf Gas Exchange Data

T.J. ARKEBAUER & S.B. VERMA
The BOREAS TF-11 team gathered a variety of data to complement their tower flux measurements collected at the SSA Fen site. This data set contains single-leaf gas exchange data from the SSA Fen site during 1994 and 1995. These leaf gas exchange properties were measured for the dominant vascular plants using portable gas exchange systems.

BOREAS/SRC AMS Suite A Surface Meteorological and Radiation Data: 1994

H. OSBORNE, K. YOUNG, V. WITTROCK & S.R. SHEWCHUK
The Saskatchewan Research Council (SRC) collected surface meteorological and radiation data from December, 1993 until Decemb er 1996. The data set is comprised of the Suite A (meteorological and energy balance measurements) and Suite B (diffuse sol ar and longwave measurements) components. Suite A measurements were taken at each of ten sites and suite B measurements were made at five of the suite A sites. These data cover an area of roughly 1000 km by...

NPP Boreal Forest: Canal Flats, Canada, 1984, R1

P.G. COMEAU & J.P. KIMMINS
This data set contains two files (.txt). One file contains stand characteristics, soil characteristics, biomass distribution, and production allocation data measured during the 1984 growing season in four lodgepole pine stands (Pinus contorta var. latifolia) located near Canal Flats, British Columbia, Canada (50.2 N -115.5 W Elevation 1,300-1,380 m). The second file contains climate data from a nearby weather station at Kananaskis Boundary, Alberta (50.98 N -115.12 W Elevation 1,463 m). Two lodgepole pine stands...

NPP Tropical Forest: Gunung Mulu, Malaysia, 1977-1978

J. PROCTOR
The NPP Database contains documented field measurements of NPP for global terrestrial sites compiled from published literature and other extant data sources. The NPP Database contains biomass dynamics, climate, and site-characteristics data georeferenced to each intensive site. A major goal of the data compilation is to use consistent and standard well-documented methods to estimate NPP from the field data. Other important components of the database include a summary, investigator contact information, and a list of...

NPP Tropical Forest: Magdalena Valley, Colombia, 1970-1971

H. FOLSTER
The NPP Database contains documented field measurements of NPP for global terrestrial sites compiled from published literature and other extant data sources. The NPP Database contains biomass dynamics, climate, and site-characteristics data georeferenced to each intensive site. A major goal of the data compilation is to use consistent and standard well-documented methods to estimate NPP from the field data. Other important components of the database include a summary, investigator contact information, and a list of...

BOREAS Level-3b AVHRR-LAC Imagery: Scaled At-Sensor Radiance in LGSOWG Format

J. CIHLAR
The BOREAS Staff Science Satellite Data Acquisition Program focused on providing the research teams with the remotely sensed satellite data products they needed to compare and spatially extend point results. Data acquired from the AVHRR instrument on the NOAA-9, -11, -12, and -14 satellites were processed and archived for the BOREAS region by the MRSC and BORIS. The data were acquired by CCRS and were provided for use by BOREAS researchers. A few winter acquisitions...

BOREAS AFM-04 Twin Otter Aircraft Flux Data

J.I. MACPHERSON & R.L. DESJARDINS
The BOREAS AFM-04 team used the NRC Twin Otter aircraft in 1994 and 1996 to make measurements in the boundary layer of the fluxes of sensible and latent heat, momentum, ozone, methane, and carbon dioxide, plus supporting meteorological parameters such as temperature, humidity, and wind speed and direction. Aircraft position, heading, and altitude were also recorded, as were several radiometric observations for use in interpretation of the data (greenness index, surface temperature, incoming and reflected...

Registration Year

  • 2012
    2,246

Resource Types

  • Collection
    2,246