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Tephra

Clark SK, Reagan MK, Plank T (1998) Trace element and U-series systematics for 1963-1965 tephras from Irazii volcano, Costa Rica implications for magma generation processes and transit times. Geochim Cosmochim Acta 62 2689-2699... [Pg.304]

Ure A, Berrow M (1982) The elemental constituents of soils. In Bowen HJM (ed) Environmental chemistry. Royal Society of Chemistry, London, pp 94-203 Vacca A, Adamo P, Pigna M, Violante P (2002) Genesis of tephra-derived soils from the Roccamonfina volcano, Central-Southern Italy. Soil Sci Soc Am J 67 198-207... [Pg.68]

Figure 5.10 Plot of AGhyd (labelled Delta G) against Si 0 ratio for Icelandic volcanic tephra. The arrow shows the direction of decreasing chemical stability. (From Pollard et al., 2003 Figure 1. Copyright John Wiley and Sons Limited. Reproduced with permission.)... Figure 5.10 Plot of AGhyd (labelled Delta G) against Si 0 ratio for Icelandic volcanic tephra. The arrow shows the direction of decreasing chemical stability. (From Pollard et al., 2003 Figure 1. Copyright John Wiley and Sons Limited. Reproduced with permission.)...
Peate, I.U., Baker, J.A., Kent, A.J.R., Al-Kadasi, M., Al-Subbary, A., Ayalew, D. and Menzies, M. (2003). Correlation of Indian Ocean tephra to individual Oligocene silicic eruptions from Afro-Arabian flood volcanism. Earth and Planetary Science Fetters 211 311-327. [Pg.190]

Pollard, A.M., Blockley, S.P.E. and Ward, K.R. (2003). Chemical alteration of tephra in the depositional environment theoretical stability modeling. Journal of Quaternary Science 18 385-394. [Pg.191]

Eastwood, W. J., Pearce, N. J. G., Westgate, J. A., and Perkins, W. T. (1998). Recognition of Santorini (Minoan) tephra in lake sediments from Golhisar Golii, southwest Turkey by laser ablation ICP-MS. Journal of Archaeological Science 25 677-687. [Pg.360]

Jakobsson, S. P. 1972. On the Consolidation and Palagonitization of the Tephra of the Surtsey Volcanic Island, Iceland, Surtsey Program Reports VI, 1-8. [Pg.120]

Whitehead, N. E., Seward, D. Veselsky, J. 1993. Mobility of trace elements and leaching rates of rhyolitic glass shards from some New Zealand tephra deposits. Applied Geochemistry, 8, 235-244. [Pg.410]

Lown, D. J. 1986. Controls on the rate of weathering and clay mineral genesis in airfall tephras a review and New Zealand case study. In Coleman, S. M. Dethier, D. P. (eds) Rates of Chemical Weathering of Rocks and Minerals. Academic Press, New York, 265-330. [Pg.638]

Lithic Tool Forgery and the ESR Age. Thermal stability of radiation-induced defects were studied in a stone tool excavated from Paleolithic Kami-Takamori site and supplied by archaeologists in our laboratory. The age agreed well with those of tephra in the same sediment studied by several dating methods. The age is related with the heating event which does not necessarily mean heating by ancient man as written clearly and cautiously in the paper.79... [Pg.13]

Goh, K. M., and Pullar, W. A. (1977). Radiocarbon dating techniques for tephras in central North Island, New Zealand. Geoderma 18,265-278. [Pg.211]

Dahlgren RA, Ugolini FC. 1989. Aluminum fractionation of soil solutions from unperturbed and tephra-treated spodosols, Cascade range, Washington, USA. Soil Sci Soc Am J 53 559-566. [Pg.304]

The lowest exposed products of the cone have an age of about 550 ka. However, tephra recovered from the nearby areas have shown a somewhat older age of about 580 ka, which most probably represents the beginning of the volcanic activity at Roccamonfina. The youngest lava from the main cone has an age of about 370 ka. The BLT and WTT sequences result from various eruptions that occurred from about 380 to 230 ka. The activity inside the caldera and along the cone flanks developed between about 300 and 100 ka (Chiesa et al. 1995 Giannetti and De Casa 2000 and references therein). [Pg.119]

Wallace et al. (1995) and Wallace (2001) have explored this issue in detail, and ScaiUet et al. (1998, 2003) and ScaiUet and Pichavant (2003) have advanced petrological modeUng approaches to circumvent the problem by estimating the volatile contents contained in the vapor phase prior to emption. Another problem with petrological estimates of volatile yields is that they scale linearly with the emption magnitude, which is often only poorly constrained from the rock record. This is especially tme in cases where tephra dispersal is very widespread, perhaps largely at sea, and where substantial burial, erosion or redeposition limit efforts to identify original thicknesses of sediment in the field. [Pg.1406]

The more soluble volatile components of volcanic plumes (e.g., halogens) can be removed from eruption clouds rapidly by adsorption on to tephra, or deposition in hydrometeors. The estimates of atmospheric burdens of volcanic volatiles in eruption clouds, therefore, depend on the time after eruption that the measurements were made, and can, in general, be lower than the total volatile release. Surprisingly, little work has been undertaken to quantify the total volatile budgets of eruptions (see De Hoog et al., 2001, for an exception). [Pg.1410]

There is considerable interest in volcanic emissions of sulfur compounds because of the role of atmospheric sulfur chemistry in atmospheric radiation and climate, the hydrological cycle, acid precipitation, and air quality (see Chapter 8.14). Early theories on the climatic effects of eruptions considered that ash particles were responsible for raising the planetary albedo, but it is now clear that even fine tephra sediment rapidly from the atmosphere, and that the main protagonist in volcanic forcing of climate is the... [Pg.1410]

Cronin S. J., Hedley M. J., NeaU V. E., and Smith G. (1998) Agronomic impact of tephra fallout from 1995 and 1996 Ruapehu volcano eruptions, New Zealand. Environ. Geol. 34, 21-30. [Pg.1424]

Oskarsson N. (1980) The interaction between volcanic gases and tephra, fluorine adhering to tephra of the 1970 Hekla eruption. J. Volcanol. Geotherm. Res. 8, 251-266. [Pg.1428]

Thorarinsson S. (1979) On the damage caused by volcanic eruptions with special reference to tephra and gases. In Volcanic Activity and Human Ecology (eds. P. D. Sheets and D. K. Grayson). Academic Press, New York, pp. 125-159. [Pg.1429]

Eanphere M. A., Champion D. E., Clynne M. A., and Muffler E. J. P. (1999) Revised age of the Rockland tephra, northern California implications for climate and stratigraphic reconstructions in the western United States. Geology 27, 135-138. [Pg.1454]

Tropical soil, Kohala, Hawaii on basalt/tephra Kelly et al. (1998)... [Pg.2435]

Brown F. H., Sarna-Wojcicki A. M., Meyer C. E., and Haileab B. (1992) Correlation of Phocene and Pleistocene tephra layers between the Turkana Basin of East Africa and the Gulf of Aden. Quat. Int. 13/14, 55—67. [Pg.3187]

Kamer, D. B., and Renne, P. R., 1998, 40Ar/39Ar geochronology of Roman Volcanic Province tephra in the Tiber River valley Age calibration of Middle Pleistocene sea-level changes. Geological Society of America Bulletin, 110, p. 740-747. [Pg.271]


See other pages where Tephra is mentioned: [Pg.545]    [Pg.145]    [Pg.180]    [Pg.180]    [Pg.181]    [Pg.118]    [Pg.209]    [Pg.430]    [Pg.520]    [Pg.30]    [Pg.402]    [Pg.377]    [Pg.378]    [Pg.380]    [Pg.184]    [Pg.402]    [Pg.985]    [Pg.1406]    [Pg.1409]    [Pg.1421]    [Pg.1811]    [Pg.2668]    [Pg.268]    [Pg.96]    [Pg.91]   
See also in sourсe #XX -- [ Pg.118 , Pg.209 ]

See also in sourсe #XX -- [ Pg.50 ]




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