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INFRARED DIAGNOSTICS OF THE RESPONSE OF GEOMATERIALS TO PULSE AND SHOCK LOADS

Levin B.W.; Sheinin V.I.; Blokhin D.I.; Favorov A.V. (2004)

The study of the mechanical consequences of shorterm pulse- and shock-type impacts on geological media related to human activity (explosions) and tectonic processes (earthquakes) is one of the priority fields in modern ...

INFRARED RADIATION OF THE SAYAN-BAIKAL REGION AND BAIKAL RIFT ZONE BASED ON SATELLITE MONITORING DATA

Vilor N.V.; Min'ko N.P. (2001)

INFRARED SPECTROSCOPY AND THERMAL ANALYSIS OF THE URANYL MINERALS

Čejka J. (1999)

INFRARED STUDY OF CO2 INCORPORATION INTO PYROPHYLLITE [AL2SI4O10(OH)2] DURING DEHYDROXYLATION

Wang L.; Zhang M.; Redfern S.A.T. (2003)

We report infrared spectroscopic observations of the incorporation of CO2 into pyrophyllite that has been heated between 200ºC and 1250ºC for periods of 15 min, 1 h and 5 days. The presence of CO2 is characterized by the ...

INFRARED STUDY OF REDUCED AND REDUCED-REOXIDIZED FERRUGINOUS SMECTITE

Fialips C.-I.; Huo D.; Yan L.; Wu J.; Stucki J.W. (2002)

Oxidation-reduction processes within natural systems greatly influence the properties of sediments, soils and clays. The objective of this experimental study was to gather new evidence for the effects of changes in redox ...

INFRAZONAL AMMONITE SCALE FOR THE UPPER BATHONIAN-LOWER CALLOVIAN OF CENTRAL RUSSIA

Gulyaev D.B. (2001)

The regional infrazonal scale for the Upper Bathonian - Lower Callovian is elaborated on the basis of successive ammonite assemblages in some Middle Jurassic sections of Central Russia. Four zones and 13 biohorizons, most ...

INHERENT GRAVITATIONAL INSTABILITY OF THICKENED CONTINENTAL CRUST WITH REGIONALLY DEVELOPED LOW- TO MEDIUM-PRESSURE GRANULITE FACIES METAMORPHISM

Gerya T.V.; Maresch W.V.; Willner A.P.; Van Reenen D.D.; Smit C.Andre (2001)

Petrological arguments show that regionally developed low- to medium-pressure, high-temperature granulite facies metamorphism may critically enhance the lowering of crustal density with depth. This leads to gravitational ...

INHERITANCE OF EARLY ARCHAEAN PB-ISOTOPE VARIABILITY FROM LONG-LIVED HADEAN PROTOCRUST

Kamber B.S.; Collerson K.D.; Moorbath S.; Whitehouse M.J. (2003)

Comparison of initial Pb-isotope signatures of several early Archaean (3.65–3.82 Ga) lithologies (orthogneisses and metasediments) and minerals (feldspar and galena) documents the existence of substantial isotopic heterogeneity ...

INHERITED PB COMPONENTS IN MAGMATIC TITANITE AND THEIR CONSEQUENCE FOR THE INTERPRETATION OF U-PB AGES

Lian-Sheng Z.; Scharer U. (1996)

The occurrence of inherited radiogenic Pb components in 35 Ma old magmatic titanite is reported here for the first time. The about 810 Ma age of the inherited components is identical to that contained in zircon from the ...

INHIBITION OF CALCITE CRYSTAL GROWTH BY MG2+ AT 100°C AND 100 BARS: INFLUENCE OF GROWTH REGIME

Deleuze M.; Brantley S.L. (1997)

Following Shiraki and Brantley (1995), who found different growth mechanisms for calcite crystal growth at 100°C and 100 bars total pressure, we investigated the inhibition of calcite crystal growth by Mg2+ under the same ...

INHOMOGENEOUS FERMI-PASTA-ULAM CHAIN FOR DESCRIBING EARTHQUAKE SOURCE DYNAMICS

Gusev G.A. (2001)

INITIAL 182HF/180HF IN METEORITIC ZIRCONS

Ireland T.R.; Bukovanska M. (2003)

Zircons from the Simmern H5 chondrite and Pomozdino eucrite have been analyzed for their Hf-W isotope systematics. Zircons have high intrinsic Hf contents and coupled with low W, make them ideal Hf-W chronometers. However, ...

INITIAL 26AL/27AL IN CARBONACEOUS-CHONDRITE CHONDRULES: TOO LITTLE 26AL TO MELT ASTEROIDS

Kunihiro T.; Rubin A.E.; McKeegan K.D.; Wasson J.T. (2004)

We report 26 Mg excesses correlated with Al/Mg ratios in five chondrules from the primitive CO3.0 chondrite Yamato 81020 that yield a mean initial 26 Al/27 Al ratio of only (3.8 ± 0.7) * 10-6 , about half that of ordinary ...

INITIAL AND LONG-TERM DISSOLUTION RATES OF ALUMINOSILICATE GLASSES ENRICHED WITH TI, ZR AND ND

Leturcq G.; Berger G.; Advocat T.; Vernaz E. (1999)

The alteration mechanism and rate of three aluminosilicate glasses were investigated experimentally in aqueous media between 90 and 200°C. In order to assess their containment properties with regard to minor actinides for ...

INITIAL MAGMATISM RELATED TO THE PALEOZOIC TECTONO-MAGMATIC REACTIVATION IN THE NORTHEASTERN BALTIC SHIELD: THE AGE AND GEOCHEMISTRY OF THE KURGA MASSIF, KOLA PENINSULA

Arzamastsev A.A.; Bayanova T.B.; Arzamastseva L.V.; Balashov Yu.A.; Gogol O.V. (1999)

Data are presented on the Kurga polyphase intrusion, which is located within the Kola alkaline province in the northeastern Baltic Shield. The rock assemblages composing the intrusion are demonstrated to be unique to the ...

INITIAL OXIDATION OF SULFIDE SITES ON A GALENA SURFACE: EXPERIMENTAL CONFIRMATION OF AN AB-INITIO CALCULATION

Eggleston C.M. (1997)

Mechanisms of sulfide mineral oxidation have been a subject of long-standing interest because of their importance in many industrial, geochemical and environmental processes. Atomic-resolution scanning tunneling microscopy ...

INITIATION OF SUBDUCTION ZONES AS A CONSEQUENCE OF LATERAL COMPOSITIONAL BOUYANCY CONTRAST WITHIN THE LITHOSPHERE: A PETROLOGICAL PERSPECTIVE

Niu Y.; O'Hara M.J.; Pearce J.A. (2003)

Tonga and Mariana forearc peridotites, inferred to represent their respective subarc lithospheres, are compositionally highly depleted (low Fe/Mg) and thus physically buoyant relative to abyssal peridotites representing ...

INJECTIVE STRUCTURES AND GOLD-SILVER MINERALIZATION OF THE POKROVSK ORE FIELD (AMUR REGION, RUSSIA)

Khomich V.G.; Boriskina N.G. (2003)

It is shown that the formation of the Pokrovsk ore field structure is related to injective processes that occurred repeatedly in the Umlekan-Ogodzha volcano-plutonic belt during the Late Mesozoic. This is confirmed by the ...

INNER CORE ANISOTROPY, ANOMALIES IN THE TIME-AVERAGED PALEOMAGNETIC FIELD, AND POLARITY TRANSITION PATHS

Clement B.M.; Stixrude L. (1995)

The diffusion of the dynamo-generated magnetic field into the electrically conducting inner core of the Earth may provide an explanation for several problematic aspects of long-term geomagnetic field behavior. We present ...

INNER-CORE ANISOTROPY AND ROTATION

Tromp J. (2001)

This paper reviews recent research focused on the Earth's inner core. Large inner-core traveltime anomalies and the anomalous splitting of core-sensitive free oscillations strongly suggest that the inner core is anisotropic. ...

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