2,247 Works

Chemical and mineral compositions of recent and ancient sediments and sedimentary rocks from the Mariana Trench, supplement to: Skornyakova, Nadezhda S; Gorbunova, Zinaida N; Kruglikova, Svetlana B; Kuz'mina, Tatyana G; Rudakova, Alevtina N; Ushakova, Maola G (1978): Sediments and sedimentary rocks from the Mariana Trench. Litologiya i Poleznyye Iskopaemyye (Lithology and Mineral Resources), 13(5), 18-32

Nadezhda S Skornyakova, Zinaida N Gorbunova, Svetlana B Kruglikova, Tatyana G Kuz'mina, Alevtina N Rudakova & Maola G Ushakova
On the bed and on the ocean slope of the southern latitudinal part of the Mariana Trench ancient sediments, as well as sedimentary and igneous rocks are exposed. In the lower part of the sampled part of the studied section Late Oligocene to Early Miocene chalk-like limestones and marls occur. Upward marly tuffites and tuffs (apparently alternating with carbonate rocks) occur. These rocks are overlain by Early Miocene tuffaceous clays and siliceous-clayey muds. In the...

Composition of organic matter from black shales drilled in the Cape Verde Basin in DSDP Hole 41-367, supplement to: Bartashevich, O V; Bogolyubova, L I (1979): Geochemistry of organic matter from black shales of the Cape Verde Basin (East Atlantic) and their oil-source potential. Litologiya i Poleznyye Iskopaemyye (Lithology and Mineral Resources), 14(2), 37-54

O V Bartashevich & L I Bogolyubova
Results of geochemical studies of organic matter in black shales from the Cape Verde Basin are reported. Based on these results, in combination with data of petrographic analysis, conclusions are made about sapropelic nature of their organic matter and low degree of its coalification. It corresponds to the proto-catagenetic substage of sedimentary rocks. Black shales of the Cape Verde Basin are classified as potential oil source strata.

Lead/Calcium profiles in the common time window 1770-2010 of the three Arctica islandica shells, supplement to: Krause-Nehring, Jacqueline; Brey, Thomas; Thorrold, Simon R (2012): Centennial records of lead contamination in northern Atlantic bivalves (Arctica islandica). Marine Pollution Bulletin, 64(2), 233-240

Jacqueline Krause-Nehring, Thomas Brey & Simon R Thorrold
In the study, we establish centennial records of anthropogenic lead pollution at different locations in the North Atlantic (Iceland, USA, and Europe) by means of lead deposited in shells of the long-lived bivalve Arctica islandica. Due to local oceanographic and geological conditions we conclude that the lead concentrations in the Icelandic shell reflect natural influxes of lead into Icelandic waters. In comparison, the lead profile of the US shell is clearly driven by anthropogenic lead...

Geochemistry of Walvis Ridge basalts, supplement to: Salters, Vincent J M; Sachi-Kocher, Afi (2010): An ancient metasomatic source for the Walvis Ridge basalts. Chemical Geology, 273(3-4), 151-167

Vincent J M Salters & Afi Sachi-Kocher
The proposed origins for the Enriched Mantle I component are many and various and some require an arbitrary addition of an exotic component, be it pure sediment or an enriched melt from the subcontinental lithosphere. With Pitcairn, Walvis Ridge is the 'type-locality' for the Enriched Mantle I (EMI) component. We analyzed basalts from DSDP Site 525A, Site 527 and Site 528 on the Walvis Ridge with the aim to constrain the history of its source....

Late Miocene Xianfeng palaeoflora and palaeoclimate of Yunnan Province, southwestern China, supplement to: Xing, Yao-Wu; Utescher, Torsten; Jacques, Frédéric M B; Su, Tao; Liu, Yu-Sheng Christopher; Huang, Yong-Jiang; Zhou, Zhekun (2012): Palaeoclimatic estimation reveals a weak winter monsoon in southwestern China during the late Miocene: Evidence from plant macrofossils. Palaeogeography, Palaeoclimatology, Palaeoecology, 358-360, 19-26

Yao-Wu Xing, Torsten Utescher, Frédéric M B Jacques, Tao Su, Yu-Sheng Christopher Liu, Yong-Jiang Huang & Zhekun Zhou
The late Miocene Xianfeng flora of Yunnan Province, southwestern China, was chosen to reconstruct the paleoclimate and the intensity of the Asian monsoon. Three available quantitative climate reconstruction methods from fossil plants, i.e. Leaf Margin Analysis (LMA), the Climate Leaf Analysis Multivariate Program (CLAMP), and the Coexistence Approach (CA) were used in this study. MATs (mean annual temperatures) resulting from these three approaches (i.e., LMA: 17.2 ± 2.38 °C; CLAMP: 15.43 ± 1.25 °C; CA:...

LBA-ECO TG-07 Seasonal Trace Gas Profiles in Brazilian Amazon Forests: 2004-2005

J.B. DO CARMO, M.M. KELLER, J.D. DIAS, P.B. DE CAMARGO & P.M. CRILL
This data set provides concentrations of carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) from air samples collected at several heights on towers at three locations in upland old growth forests in the Brazilian Amazon during the wet and dry seasons of 2004 and 2005. Towers are located in the Caxiuana National Forest, in the state of Amazonas; the Manaus, Para, site in the Cuieiras Reserve; and the Sinop site, located north of that...

Benthic foraminifera in Northwest Indian Ocean surface sediments

J Otto R Hermelin & Graham Shimmield
The relationship between the distribution of benthic foraminifera and sediment type and depositional environment in the Arabian Sea is discussed. The benthic foraminiferal fauna were sampled in nineteen Recent surface sediment samples, and geochemical variables of the sediment of the same samples were measured. The water depths for the box core samples varies from 440 to 4040 m. A total of 103 species and six species-complexes were identified.The geochemical properties were found to correspond well...

Heavy mineral content and grain sizes of sediment samples from foreshore to dune around Skagen, north Denmark, supplement to: Cordes, Eilhard (1966): Aufbau und Bildungsbedingungen der Schwermineralseifen bei Skagen (Dänemark). Meyniana, 16, 1-35

Eilhard Cordes
Aufbau und Ausdehnung der Schwermineral-Anreicherungen (Ilmenit, Granat, Amphibol) am Strand südlich Skagens wurden in langen Schürfgräben untersucht. Die Seifenlagen ziehen durchgehend vom Kliff-Fuß bis zur mittleren Meereshöhe hin und liegen meist diskordant auf der alten Strandschichtung. Ihre strandparallele Ausdehnung beträgt bis zu 100 m. Aufgebaut werden sie aus dünnen Schwermineral-Lamellen, die in kleinerem Umfang überall in den Strandablagerungen zu finden sind und hier das Gefüge nachzeichnen (Rippeln, Strandwallschichtung, Schichtstörungen).Die Seifenbildung geht in einem Gebiet mit...

Composition of dikes and lavas from the Pito Deep Rift, supplement to: Pollock, Meagen A; Klein, Emily M; Karson, Jeffrey A; Coleman, Drew S (2008): Compositions of dikes and lavas from the Pito Deep Rift: Implications for crustal accretion at superfast spreading centers. Journal of Geophysical Research: Solid Earth, 114, B03207

Meagen A Pollock, Emily M Klein, Jeffrey A Karson & Drew S Coleman
The northwest trending walls of the Pito Deep Rift (PDR), a tectonic window in the southeast Pacific, expose in situ oceanic crust generated ?3 Ma at the superfast spreading southern East Pacific Rise (SEPR). Whole rock analyses were performed on over 200 samples of dikes and lavas recovered from two ~8 km**2 study areas. Most of the PDR samples are incompatible-element-depleted normal mid-ocean ridge basalts (NMORB; (La/Sm)N < 1.0) that show typical tholeiitic fractionation trends....

NACP Forest Age Maps at 1-km Resolution for Canada (2004) and the U.S.A. (2006)

Y. PAN, J.M. CHEN, R. BIRDSEY, K. MCCULLOUGH, L. HE & F. DENG
This data set provides forest age map products at 1-km resolution for Canada and the United States (U.S.A.). These continental forest age maps were compiled from forest inventory data, historical fire data, optical satellite data, and the images from NASAâ s Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS) project. These input data products have various sources and creation dates as described in the source paper by Pan et al. (2011). Canadian maps were produced with...

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...

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...

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...

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...

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...

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...

BOREAS TE-01 SSA Soil Lab Data

DARWIN ANDERSON
This data set was collected by TE-01 to provide a set of soil properties for BOREAS investigators in the SSA. The soil samples were collected at sets of soil pits. Each set of soil pits was in the vicinity of one of the five flux towers in the BOREAS SSA. The collected soil samples were sent to a lab, where the major soil properties were determined. These properties include, but are not limited to, soil...

Global Data Set of Derived Soil Properties, 0.5-Degree Grid (ISRIC-WISE)

N.H. BATJES
The World Inventory of Soil Emission Potentials (WISE) database currently contains data for over 4300 soil profiles collected mostly between 1950 and 1995. This database has been used to generate a series of uniform data sets of derived soil properties for each of the 106 soil units considered in the Soil Map of the World (FAO-UNESCO, 1974). These data sets were then linked to a 1/2 degree longitude by 1/2 degree latitude version of the...

Global 30-Year Mean Monthly Climatology, 1901-1960 (New et al.)

M. NEW, M. HULME & P.D. JONES
This is a data set of 30-year mean monthly surface climate data over global land areas, excluding Antarctica, for the period 1901-1960. The data set is gridded at 0.5 degree latitude/longitude resolution and includes seven variables: precipitation, mean temperature, diurnal temperature range, wet-day frequency, vapour pressure, cloud cover, and ground-frost frequency. In constructing the monthly grids the authors used an anomaly approach which attempts to maximize station data in space and time (New et al.,...

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