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WINTER-SPRING PRECIPITATION AS THE PRINCIPAL CONTROL ON PREDOMINANCE OF C3 PLANTS IN CENTRAL ASIA OVER THE PAST 1.77 MYR: EVIDENCE FROM δ13C OF LOESS ORGANIC MATTER IN TAJIKISTAN

Yang S.; Ding Z. (2006)

Although changes in atmospheric CO2 levels are thought to be the major factor driving long-term C3/C4 vegetation evolution, recent studies tend to emphasize the effect of regional climate conditions on C3/C4 variations. ...

CLIMATIC AND ENVIRONMENTAL CONTROLS ON THE VARIATION OF C3 AND C4 PLANT ABUNDANCES IN CENTRAL FLORIDA FOR THE PAST 62,000 YEARS

Huang Y.; Shuman B.; Wang Y.; Webb III T.; Grimm E.C.; Jacobson G.L. (2006)

Lake Tulane provides one of the few continental sediment records beyond the late glacial period (~ 15,000 cal years B.P.) for eastern North America. Its continuous, organic-rich sediment has yielded pollen assemblages that ...

A LONG-BODIED LIZARD FROM THE LOWER CRETACEOUS OF JAPAN

Evans S.E.; Manabe M.; Noro M.; Isaji S.; Yamaguchi M. (2006)

Platynotan lizards underwent a dramatic Late Cretaceous radiation into marine habitats. Beginning with small-bodied forms, the lineage culminated with the mosasaurs, large predatory lizards with a world-wide distribution ...

COMPARATIVE MOLECULAR BIOMARKER ASSESSMENT OF PHYTOPLANKTON PALEOPRODUCTIVITY FOR THE LAST 160 KYR OFF CAP BLANC, NW AFRICA

Zhao M.; Mercer J.L.; Eglinton G.; Higginson M.J.; Huang C.-Y. (2006)

We report high resolution molecular abundance data for alkenones, dinosterol, long chain diols and n-alkanols from ODP Site 658 (20°45′N, 18°35′W; 2263 m water depth). These data are compared with previously reported data ...

LATE PALEOPROTEROZOIC EXTENSION AND A PALEOSTRESS FIELD RECONSTRUCTION OF THE NORTH CHINA CRATON

Hou G.; Wang C.; Li J.; Qian X. (2006)

Mafic dyke swarms and aulacogens are major anorogenic extensional events in the Late Paleoproterozoic North China Craton (NCC). The N-NNW mafic dyke swarms are widespread in the NCC, whose ages span between 1.83 and 1.77 ...

THE SYMMETRY AND CRYSTAL STRUCTURE OF GORCEIXITE, BAAL3[PO3(O,OH)]2(OH)6, A MEMBER OF THE ALUNITE SUPERGROUP

Dzikowski T.J.; Groat L.A.; Jambor J.L. (2006)

The crystal structure of the Ba-Al phosphate mineral gorceixite, a 7.0538(3), c 17.2746(6) Å, V 744.4(2) Å3, space group R3 ̄m, Z = 3, has been refined to an R1, index of 2.3% on the basis of 253 unique reflections measured ...

THE OXIDATION STATE OF EUROPIUM IN HYDROTHERMAL SCHEELITE: IN SITU MEASUREMENT BY XANES SPECTROSCOPY

Brugger J.; Jones H.; Etschmann B.; Chu Y.S.; Vogt S.; Harland C.; Ryan C. (2006)

X-ray microfluorescence and EuL3 micro-X-ray absorption near-edge structure (XANES) spectroscopy were conducted to determine the distribution and valence state of europium in two samples of scheelite (CaWO4) containing ...

LATE HOLOCENE CLIMATE CHANGE AND HUMAN IMPACT RECORDED IN A SOUTH SWEDISH OMBROTROPHIC PEAT BOG

van der Linden M.; van Geel B. (2006)

A peat core from a raised bog in southern Sweden was examined (plant macrofossils, pollen/non-pollen microfossils, colorimetric humification, carbon/nitrogen ratios, bulk densities, loss on ignition) to investigate the ...

THE EARLIEST ENCRINURID TRILOBITES FROM THE EAST BALTIC AND THEIR TAXONOMIC INTEREST

Pärnaste H. (2006)

The earliest known representative of the subfamily Encrinurinae, Encrinuroides regularis sp. nov., is described from the glauconitic sandstone of the Máekúla Member, Billingen Stage (Arenig), from localities in the ...

LATE ORDOVICIAN BRACHIOPODS FROM THE DULANKARA FORMATION OF THE CHU-ILI RANGE, KAZAKHSTAN: THEIR SYSTEMATICS, PALAEOECOLOGY AND PALAEOBIOGEOGRAPHY

Popov L.E.; Cocks L.R.M. (2006)

Brachiopods from the late Ordovician (late Caradoc) Dulankara Formation of the Chu-Ili Range, Kazakhstan, are reviewed. Those from the upper two members of the formation, the Degeres and Akkol members, are systematically ...

MILLENNIAL-SCALE CLIMATIC CYCLES IN THE EARLY PLIOCENE POLLEN RECORD OF PTOLEMAIS, NORTHERN GREECE

Kloosterboer-Van Hoeve M.L.; Visscher H.; Brinkhuis H.; Steenbrink J. (2006)

Early Pliocene lacustrine sediments from the Ptolemais Basin, northern Greece, exhibit a climatically induced cyclicity, which can be correlated with the orbital cycle of precession. Superimposed on precession-controlled ...

TEMPERATURE RESPONSES TO QUASI-100-YR SOLAR VARIABILITY DURING THE PAST 6000 YEARS BASED ON δ18O OF PEAT CELLULOSE IN HONGYUAN, EASTERN QINGHAI-TIBET PLATEAU, CHINA

Xu H.; Hong Y.; Lin Q.; Zhu Y.; Hong B.; Jiang H. (2006)

During the past 6000 years, the temperature variation trend inferred from δ18O of peat cellulose in a peat core from Hongyuan (eastern Qinghai-Tibet plateau, southwestern China) is similar to the atmospheric 14C concentration ...

SEDIMENTOLOGY OF A MUDDY ALLUVIAL DEPOSIT: TRIASSIC DENWA FORMATION, INDIA

Ghosh P.; Sarkar S.; Maulik P. (2006)

Triassic Upper Denwa Formation (~ 380 m) in the Satpura Gondwana basin, central India is a mudstone-dominated fluvial succession that comprises isolated ribbon-shaped (2-5-m-thick) channel-fill bodies encased within ...

MODELLING ICEBERG TRAJECTORIES, SEDIMENTATION RATES AND MELTWATER INPUT TO THE OCEAN FROM THE EURASIAN ICE SHEET AT THE LAST GLACIAL MAXIMUM

Death R.; Siegert M.J.; Bigg G.R.; Wadley M.R. (2006)

We model iceberg flow paths from the Eurasian Ice Sheet, and the associated meltwater production and sedimentation rates within the Norwegian-Greenland Sea during the last glaciation. Results from a numerical ice sheet ...

ABRUPT CHEMICAL WEATHERING INCREASE ACROSS THE PERMIAN-TRIASSIC BOUNDARY

Sheldon N.D. (2006)

Previous studies have suggested a variety of causes for the end-Permian extinction event including a bolide impact, flood basalt volcanism, methane clathrate dissociation, or some combination of catastrophic processes. One ...

RECONSTRUCTING THE LATE MIOCENE CLIMATE AND OCEANIC HEAT FLUX USING THE AGCM ECHAM4 COUPLED TO A MIXED-LAYER OCEAN MODEL WITH ADJUSTED FLUX CORRECTION

Steppuhn A.; Micheels A.; Geiger G.; Mosbrugger V. (2006)

In terms of climate, the Late Miocene represents a transitional phase between the Eocene greenhouse climate and the Quaternary icehouse situation; it is characterised by an extensive Antarctic ice sheet and incipient ...

SIGNIFICANCE OF MICROBIALITES, CALCIMICROBES, AND CALCAREOUS ALGAE IN REEFAL FRAMEWORK FORMATION FROM THE SILURIAN OF GOTLAND, SWEDEN

Nose M.; Schmid D.U.; Leinfelder R.R. (2006)

The structure of stromatoporoid-tabulate coral reefs from the Mid- to Upper Silurian of Gotland includes complex microbialite and algal framework fabric. Non-skeletal microbialites show variable fabrics, structures, and ...

SEDIMENTOLOGY OF RIFT CLIMAX DEEP WATER SYSTEMS; LOWER RUDEIS FORMATION, HAMMAM FARAUN FAULT BLOCK, SUEZ RIFT, EGYPT

Leppard C.W.; Gawthorpe R.L. (2006)

In most marine rift basins, subsidence outpaces sedimentation during rift climax times. Typically this results in sediment-starved hangingwall depocentres dominated by deep-marine mudstones, with subordinate local development ...

EDIACARAN FOSSIL PRESERVATION: TAPHONOMY AND DIAGENESIS OF A DISCOID BIOTA FROM THE AMADEUS BASIN, CENTRAL AUSTRALIA

Mapstone N.B.; McIlroy D. (2006)

Aspects of the preservation of the enigmatic soft-bodied Ediacara biota in relatively coarse-grained siliciclastic sediments remain unresolved. The taphonomic model proposed by Gehling in 1999 is here validated through ...

THE CADOMIAN UNCONFORMITY IN THE SAXO-THURINGIAN ZONE, GERMANY: PALAEOGEOGRAPHIC AFFINITIES OF EDIACARAN (TERMINAL NEOPROTEROZOIC) AND CAMBRIAN STRATA

Buschmann B.; Elicki O.; Jonas P. (2006)

The most complete Ediacaran (terminal Neoproterozoic) to Early Cambrian record in the Saxo-Thuringian Zone is provided by the Cadomian-deformed Ediacaran Rothstein Formation and the unconformably overlying Early Cambrian ...

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