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Now showing items 181-200 of 24508

SECULAR VARIATION IN LATE CRETACEOUS CARBON ISOTOPES: A NEW δ13C CARBONATE REFERENCE CURVE FOR THE CENOMANIAN-CAMPANIAN (99.6-70.6 MA)

Jarvis I.; Gale A.S.; Jenkyns H.C.; Pearce M.A. (2006)

Carbon stable-isotope variation through the Cenomanian-Santonian stages is characterized using data for 1769 bulk pelagic carbonate samples collected from seven Chalk successions in England. The sections show consistent ...
SILICON AND ALUMINIUM IN GROUNDWATER OF THE KłODZKO REGION (THE SUDETES, SW POLAND) - PARTIAL GEOCHEMICAL EQUILIBRIUM WITH SECONDARY SOLID PHASES

Dobrzyński D. (2006)

The chemistry of shallow, cold groundwater in the eastern part of the Kłodzko Region (the Sudetes, SW Poland) was investigated. Groundwaters occur in the short turn-over time zone of the hydrogeological systems. The aquifers ...
CONSTRAINED DIX INVERSION

Koren Z.; Ravve I. (2006)

We propose a stable inversion method to create geologically constrained instantaneous velocities from a set of sparse, irregularly picked stacking- or rms-velocity functions in vertical time. The method is primarily designed ...
MOLECULAR AND CARBON ISOTOPIC VARIABILITY OF HYDROCARBON GASES FROM MUD VOLCANOES IN THE GULF OF CADIZ, NE ATLANTIC

Stadnitskaia A.; van Weering T.C.E.; Ivanov M.K.; Blinova V.; Kreulen R. (2006)

Investigations of molecular and carbon isotopic variability of hydrocarbon gases from methane through butanes (pentanes) have been performed on six mud volcanoes from two fluid venting provinces located in the Gulf of ...
MAGNETOSTRATIGRAPHY OF THE YAHA SECTION, TARIM BASIN (CHINA): 11 MA ACCELERATION IN EROSION AND UPLIFT OF THE TIAN SHAN MOUNTAINS

Charreau J.; Chen Y.; Gilder S.; Dominguez S.; Jolivet M.; Avouac J.-P.; Sen S.; Li Y.; Wang W. (2006)

We report a magnetostratigraphic and rock magnetic study of the Yaha section, located on the southern flank of the central Tian Shan mountains, Asia. Our results show a two-fold increase in sedimentation rate as well as ...
GENESIS OF THE PERMIAN BAIMAZHAI MAGMATIC NI-CU-(PGE) SULFIDE DEPOSIT, YUNNAN, SW CHINA

Wang C.Y.; Zhou M.-F. (2006)

The ~260 Ma-old Baimazhai Ni-Cu-(PGE) sulfide deposit in the Jinping region, Yunnan, SW China, is hosted in a small mafic-ultramafic intrusion, which intruded Ordovician sandstone and slate. The intrusion is concentric ...
PETROGENESIS AND TECTONIC SETTING OF THE PERALKALINE PINE CANYON CALDERA, TRANS-PECOS TEXAS, USA

White J.C.; Benker S.C.; Ren M.; Urbanczyk K.M.; Corrick D.W. (2006)

The Pine Canyon caldera is a small (6-7 km diameter) ash-flow caldera that erupted peralkaline quartz trachyte, rhyolite, and high-silica rhyolite lavas and ash-flow tuffs about 33-32 Ma. The Pine Canyon caldera is located ...
REGRESSION PROBLEMS FOR MAGNITUDES

Castellaro S.; Mulargia F.; Kagan Y.Y. (2006)

Least-squares linear regression is so popular that it is sometimes applied without checking whether its basic requirements are satisfied. In particular, in studying earthquake phenomena, the conditions (a) that the uncertainty ...
MULTIPLE EDIFICE-COLLAPSE EVENTS IN THE EASTERN MEXICAN VOLCANIC BELT: THE ROLE OF SLOPING SUBSTRATE AND IMPLICATIONS FOR HAZARD ASSESSMENT

Carrasco-Núñez G.; Díaz-Castellón R.; Siebert L.; Hubbard B.; Sheridan M.F.; Rodríguez S.R. (2006)

The Citlaltépetl-Cofre de Perote volcanic chain forms an important physiographic barrier that separates the Central Altiplano (2500 masl) from the Gulf Coastal Plain (GCP) (1300 masl). The abrupt eastward drop in relief ...
THE SOUTH AFRICAN STEREOSPONDYL LYDEKKERINA HUXLEYI (TETRAPODA, TEMNOSPONDYLI) FROM THE LOWER TRIASSIC OF AUSTRALIA

Warren A.A.; Damiani R.; Yates A.M. (2006)

The first tetrapod fossil from the Rewan Formation of the Galilee Basin, central Queensland, Australia, is identified as Lydekkerina huxleyi, a stereospondyl found elsewhere only in the Lystrosaurus Assemblage Zone of South ...
THE 1968 ANDESITIC LATERAL BLAST ERUPTION AT ARENAL VOLCANO, COSTA RICA

Alvarado G.E.; Soto G.J.; Schmincke H.-U.; Sumita M.; Bolge L.L. (2006)

The magmatic andesitic eruption of Arenal volcano on July 29-31, 1968, after centuries of dormancy, produced three new fissural craters (A, B and C) on its western flank and a multilayered pyroclastic deposit emplaced by ...
SALT FORMATION ASSOCIATED WITH SUB-SURFACE BOILING AND SUPERCRITICAL WATER

Hovland M.; Rueslåtten H.G.; Johnsen H.K.; Kvamme B.; Kuznetsova T. (2006)

Laboratory experiments have demonstrated that supercritical water has extremely low solubility for normal sea salts. This fact opens up the possibility for the precipitation of salt from seawater that circulates in faults ...
CUMULATES AND GABBROS IN SOUTHERN ALBANIAN OPHIOLITES: THEIR BEARING ON REGIONAL TECTONIC SETTING

Koller F.; Hoeck V.; Meisel T.; Ionescu C.; Onuzi K.; Ghega D. (2006)

The western belt of the southern Albanian ophiolites consists of six major ophiolite massifs (Voskopoja, Rehove, Morava, Devolli, Vallamara, Shpati) and two smaller ones (Luniku and Stravaj). Each massif has a distinct ...
FACIES SYSTEM OF THE EASTERN BARENTS SEA SINCE THE LAST GLACIATION TO PRESENT

Murdmaa I.; Ivanova E.; Khusid T.; Bourtman M.; Alekhina G.; Alekseeva T.; Belousov M.; Serova V.; Duplessy J.-C.; Levitan M. (2006)

Twenty-two sediment cores raised from the central and eastern parts of the Barents Sea have been studied to reconstruct the evolution of the facies system since the Late Weichselian glaciation. Multiproxy records reveal ...
AMMONOID STRATIGRAPHY AND SEDIMENTARY EVOLUTION ACROSS THE PERMIAN - TRIASSIC BOUNDARY IN EAST GREENLAND

Bjerager M.; Seidler L.; Surlyk F.; Stemmerik L. (2006)

East Greenland is a classical area for the study of the Permianearliest Triassic H.trivialeTriassic boundary. The new ammonoid data indicate that deposition was continuous across the Permianmudstone contact in basinal areas ...
THE EASTERN FLANK OF THE CASPIAN BASIN: SEDIMENTARY COMPLEXES AND SEDIMENTATION CONDITIONS IN THE EARLY-MIDDLE CARBONIFEROUS

Konyukhov A.I.; Baimagambetov B.K.; Kan A.N. (2006)

Carboniferous and Lower Permian Carbonate and terrigenous rocks with the total thickness of >4000 m serve as the productive units in the Paleozoic subsalt complex at the eastern flank of the basin surrounding the northern ...
MANGANESE ORE POTENTIAL RELATED TO HYDROSULFURIC POLLUTION OF BOTTOM WATERS (WITH THE BLACK SEA AS AN EXAMPLE)

Nedumov R.I. (2006)

Conditions and scales of the accumulation of dissolved manganese in waters of marine basins with hydrosulfuric contamination are considered. It is shown that the Kalamit ferromanganese nodule field, most probably, originated ...
THE PERMIAN OF THE VERKHOYANSK-OKHOTSK REGION, NE RUSSIA

Klets A.G.; Budnikov I.V.; Kutygin R.V.; Byakov A.S.; Grinenko V.S. (2006)

This report summarizes data on the Permian deposits of the Verkhoyansk-Okhotsk region (tectonics, paleogeography, fauna, flora and stratigraphy). The Verkhoyansk-Okhotsk region covers the area of the Verkhoyansk fold-and-thrust ...
LOWER MIOCENE SEDIMENTS OF THE MAIKOP GROUP IN THE CENTRAL EASTERN PARATETHYS

Stolyarov A.S.; Ivleva E.I. (2006)

The composite section of upper Maikop sediments compiled for the central part of the Eastern Paratethys is presented. The section (more than 1000 m) comprises the Karadzhalgan, Sakaraulian, and Kotsakhurian regional stages. ...
PERMIAN AMMONOID ASSOCIATIONS OF THE VERKHOYANSK REGION, NORTHEAST RUSSIA

Kutygin R.V. (2006)

On the basis of a study of the majority of Permian ammonoids known in Verkhoyansk Region, and an analysis of their age distribution, seven associations and four subassociations are established. These ammonoid associations ...

Now showing items 181-200 of 24508

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