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ARCHAEAL AND BACTERIAL LIPIDS IN AUTHIGENIC CARBONATE CRUSTS FROM EASTERN MEDITERRANEAN MUD VOLCANOES

Bouloubassi I.; Aloisi G.; Pierre C.; Pancost R.D.; Hopmans E.; Damsté J.S.S. (2006)

We investigated the distributions and δ13C values of lipid biomarkers in authigenic methane-related carbonate crusts formed on eastern Mediterranean mud volcanoes. A highly diverse suite of microbial membrane lipids was ...

CARBON ISOTOPE RECORD FOR THE ONSET OF THE LOMAGUNDI CARBON ISOTOPE EXCURSION IN THE GREAT LAKES AREA, NORTH AMERICA

Bekker A.; Karhu J.A.; Kaufman A.J. (2006)

Carbonate units of the Chocolay Group in the Lake Superior area, USA and the Gordon Lake Formation of the correlative upper Huronian Supergroup, Ontario, Canada were deposited after the last Paleoproterozoic glacial event ...

PALEOENVIRONMENTAL RECORD IN LAKE BAIKAL SEDIMENTS: ENVIRONMENTAL CHANGES IN THE LAST 160 KY

Grygar T.; Bezdička P.; Hradil D.; Lang K.; Novotna K.; Kadlec J.; Pruner P.; Swann G.; Oberhänsli H. (2006)

Measurement of magnetic susceptibility (MS) and diffuse reflectance spectra (DRS) were used to construct environmental proxies in a 6.5 m section of the sediment core VER98-1-13 from the Academician Ridge, Lake Baikal. The ...

INTERGLACIAL AND HOLOCENE TEMPERATURE RECONSTRUCTIONS BASED ON MIDGE REMAINS IN SEDIMENTS OF TWO LAKES FROM BAFFIN ISLAND, NUNAVUT, ARCTIC CANADA

Francis D.R.; Wolfe A.P.; Walker I.R.; Miller G.H. (2006)

Midge remains (Insecta: Diptera: Chironomidae and Chaoboridae) from two upland lake basins on the Cumberland Peninsula of Baffin Island were analyzed and the results used in a transfer function to reconstruct paleotemperatures. ...

FROM STRUCTURE TOPOLOGY TO CHEMICAL COMPOSITION. I. STRUCTURAL HIERARCHY AND STEREOCHEMISTRY IN TITANIUM DISILICATE MINERALS

Sokolova E. (2006)

The structural hierarchy and stereochemistry have been considered for 24 titanium disilicate minerals that contain the TS (Titanium Silicate) block, a central trioctahedral (O) sheet, and two adjacent (H) sheets of [5]- ...

ARCHEAN GREENSTONE-TONALITE DUALITY: THERMOCHEMICAL MANTLE CONVECTION MODELS OR PLATE TECTONICS IN THE EARLY EARTH GLOBAL DYNAMICS?

Kerrich R.; Polat A. (2006)

Mantle convection and plate tectonics are one system, because oceanic plates are cold upper thermal boundary layers of the convection cells. As a corollary, Phanerozoic-style of plate tectonics or more likely a different ...

MEASURING MULTIFRACTALITY IN SEISMIC SEQUENCES

Telesca L.; Lapenna V. (2006)

We investigated the multifractal structure of the interevent times between successive earthquakes that occurred in Umbria-Marche, which is one of the most seismically active areas of central Italy. We used the Multifractal ...

SEISMIC RECORDING ON DRIFTING ICEBERGS: CATCHING SEISMIC WAVES, TSUNAMIS AND STORMS FROM SUMATRA AND ELSEWHERE

Okal E.A.; MacAyeal D.R. (2006)

Under the Incorporated Research Institutions for Seismology (IRIS) Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) project SOUTHBERG, we have operated for the past three years a number of seismic ...

TEXTURE DEVELOPMENT AND ELASTIC STRESSES IN MAGNESIOWUSTITE AT HIGH PRESSURE

Tommaseo C.E.; Merkel S.; Speziale S.; Wenk H.R.; Devine J. (2006)

Cubic magnesiowustite has been deformed in a diamond anvil cell at room temperature. We present results for (Mg0.4Fe0.6)O, (Mg0.25Fe0.75)O, and (Mg0.1 Fe0.9)O up to 37, 16, and 18 GPa, respectively. The diffraction images, ...

SULFUR ELECTRONIC ENVIRONMENTS IN αNIS AND β-NIS: EXAMINATION OF THE RELATIONSHIP BETWEEN COORDINATION NUMBER AND CORE ELECTRON BINDING ENERGIES

Goh S.W.; Buckley A.N.; Lamb R.N.; Skinner W.M.; Pring A.; Wang H.; Fan L.J.; Jang L.Y.; Lai L.J.; Yang Y.W. (2006)

X-ray photoelectron spectra have been obtained under the same experimental conditions for synthetic α-NiS and natural β-NiS in order to establish any difference in S electronic environment, and to test the proposition that ...

SULFUR AND STRONTIUM ISOTOPIC COMPOSITIONS OF CARBONATE AND EVAPORITE ROCKS FROM THE LATE NEOPROTEROZOIC-EARLY CAMBRIAN BILARA GROUP (NAGAUR-GANGANAGAR BASIN, INDIA): CONSTRAINTS ON INTRABASINAL CORRELATION AND GLOBAL SULFUR CYCLE

Mazumdar A.; Strauss H. (2006)

Sulfur and strontium isotope ratios are presented for carbonate and evaporite rocks from the late Neoproterozoic and early Cambrian Bilara and Hanseran Evaporite Groups, NW India. The sulfur isotopic compositions of trace ...

PALEOENVIRONMENTAL AND PALEOBIOGEOGRAPHIC IMPLICATIONS OF A NEW EDIACARAN BODY FOSSIL FROM THE NEOPROTEROZOIC CAROLINA TERRANE, STANLY COUNTY, NORTH CAROLINA

Weaver P.G.; Tacker R.C.; McMenamin M.A.S. (2006)

New partial swartpuntiid from Neoproterozoic age rocks of Stanly County, North Carolina, herein assigned to cf. ?Swartpuntia sp., along with previously described Pteridinium carolinaensis, Aspidella, other metazoan trace ...

MIOCENE RIFTING OF FUERTEVENTURA (CANARY ISLANDS)

Fernandez C.; Casillas R.; Navarro E.G.; Gutiérrez M.; Camacho M.A.; Ahijado A. (2006)

The older geological units of the volcanic island of Fuerteventura (Canary Islands), i.e., the so-called basal complex and the lower part of the subaerial volcanic rocks, show abundant structures indicative of a long-lived ...

LATERAL VARIATIONS OF THE MID-MANTLE CONDUCTANCE BENEATH EUROPE

Semenov V.Yu.; Jozwiak W. (2006)

Europe is a region with the largest density of geomagnetic observatories and several authors have used these data to estimate local geomagnetic response functions for various period ranges, typically of the width of 1.5 ...

NEUTRON DIFFRACTION TEXTURE ANALYSIS

Wenk H.R. (2006)

An intrinsic property of polycrystalline materials is the orientation distribution of crystallites. In some cases this distribution is random, yet often there is preferred orientation of crystallites relative to macroscopic ...

THE TAMBIEN GROUP, ETHIOPIA: AN EARLY CRYOGENIAN (CA. 800-735 MA) NEOPROTEROZOIC SEQUENCE IN THE ARABIAN-NUBIAN SHIELD

Alene M.; Jenkin G.R.T.; Leng M.J.; Darbyshire D.P.F. (2006)

The Tambien Group in Tigrai, Ethiopia, comprises a number of inliers each containing 2-3 km thickness of interbedded carbonate and clastic sediments, capped in one inlier by a glaciogenic diamictite. A range of geochemical ...

MID- TO LATE-HOLOCENE HYDROLOGICAL AND CLIMATIC VARIABILITY IN DISKO BUGT, CENTRAL WEST GREENLAND

Moros M.; Jensen K.G.; Kuijpers A. (2006)

Diatom and lithological analyses were carried out on two sediment cores from Disko Bugt and the adjacent Kangersuneq Fjord, West Greenland, in order to investigate mid- to late-Holocene (6.9-0.7 kyr BP) hydrographic and ...

WILDFIRE HISTORY AND FIRE ECOLOGY OF THE SWISS NATIONAL PARK (CENTRAL ALPS): NEW EVIDENCE FROM CHARCOAL, POLLEN AND PLANT MACROFOSSILS

Stähli M.; Allgöwer B.; Finsinger W.; Tinner W. (2006)

Microscopic (> 10 μm) and macroscopic (> 200 μm) charcoal particles were analysed in sediments from two mires in subalpine coniferous forests at c. 1800 m a.s.l. in southeastern Switzerland. Pollen and plant macrofossils ...

TANTALUM-BEARING TITANITE: SYNTHESIS AND CRYSTAL STRUCTURE DATA

Liferovich R.P.; Mitchell R.H. (2006)

Synthetic titanite, CaTiOSiO4, and the series of (Ca1-xNax)(Ti1-xTax) OSiO4 and Ca(Ti1-2xTaxAlx) OSiO4 solid solutions have been prepared by ceramic methods, and their crystal structure determined by the Rietveld analysis. ...

ESTABLISHING A CHRONOLOGY FOR LACUSTRINE SEDIMENTS USING A MULTIPLE DATING APPROACH-A CASE STUDY FROM THE FRICKENHAUSER SEE, CENTRAL GERMANY

Enters D.; Zolitschka B.; Kirchner G. (2006)

In order to establish a reliable chronology for lacustrine sediments of the Frickenhauser See (central Germany) different dating methods have been applied. A total of 17 AMS 14C dates, all within the last 2000 years, were ...

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