Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Sediments/sedimentation glacial

Records of past environmental change are preserved in a broad range of Earth materials. Past environments are inferred from "proxy" records, meaning measurements of physical and chemical parameters of marine and terrestrial sediment, polar ice, and other materials that were in some way influenced by their environment during accumulation. Examples of proxy records are the distribution of glacial deposits, the isotopic composition of terrestrial and marine sediments and ice, the abundance and species composition of plant and animal fossils, and the width of tree rings. [Pg.459]

Francois R, Bacon MP, Altabet MA (1993) Glacial/interglacial changes in sediment rain rate in the SW Indian sector of subantarctic waters as recorded by °Th, Pa, U and 5 N. Paleoceanography 8(5) 611-629... [Pg.525]

Robbins JA (1988) A model for particle-selective transport of tracers in sediments with conveyor-belt deposit feeders. Journal of Geophysical Research 91 8542-8558 Robinson LF, Belshaw NS, Henderson GM (in press) U and Th isotopes in seawater and modem carbonates from the Bahamas. Geochim Cosmochim Acta Rosenthal Y, Boyle EA, Labeyrie L, Oppo D (1995a) Glacial enrichments of authigenic Cd and U in subantarctic sediments A climatic control on the elements oceanic budget Paleoceanography 10(3) 395-413... [Pg.528]

Yu E-F, Francois R, Bacon M (1996) Similar rates of modem and last-glacial ocean thermohaline circulation inferred from radiochemical data. Nature 379 689-694 Zheng Y, Anderson RF, van Geen A, Fleisher MQ (2002) Preservation of particulate non-lithogenic uranium in marine sediments. Geochim Cosmochim Acta 66(17) 3085-3092. [Pg.529]

King LH (1967) Isolation and Characterization of Organic Matter from Glacial-Marine Sediments on the Scotian Shelf. Report BIO 67-4, pp 1-18... [Pg.452]

Mesozoic volcanic rocks and coeval intrusive complexes within the Quesnel geotectonic terrain of central British Columbia host several major porphyry copper-gold mines. Exploration for new deposits in this region has been met with limited success, because prospective bedrock is mantled by Late Pleistocene glacial sediment (e.g.,till) and Late Olig-ocene to Pleistocene plateau basalt. [Pg.21]

Much of the bedrock is covered with up to 3 m of a sandy till deposited during a southeast to northwest ice-flow event. Soil formed on the glacial sediment is typically a well-drained brunisol. [Pg.21]

Base metal exploration using indicator minerals in glacial sediments,... [Pg.29]

Northwest Alberta is mantled by an extensive cover of unconsolidated glacial and nonglacial sediments of varying thicknesses. During the Late Wisconsin, the Keewatin-sourced Laurentide Ice Sheet flowed west and southwest across northern Alberta towards the Rocky Mountains (Paulen etal. 2007). [Pg.29]

Fig. 2. Sphalerite grains recovered from glacial sediments, normalized to 30 kg sample weights, plotted on a Shuttle Radar... [Pg.31]

Plouffe, A., Paulen, R.C. Smith, I.R. 2006. Indicator mineral content and geochemistry of glacial sediments from northwest Alberta (NTS 84L, M) new opportunities for mineral exploration. Geological Survey of Canada, Open File 5121 and Alberta Geological Survey, Special Report 77. [Pg.32]

Although no kimberlite is known of in this second area, kimberlite boulders and elevated kimberlite indicator mineral counts in glacial sediments have been... [Pg.34]

See other pages where Sediments/sedimentation glacial is mentioned: [Pg.162]    [Pg.325]    [Pg.201]    [Pg.381]    [Pg.397]    [Pg.128]    [Pg.221]    [Pg.222]    [Pg.231]    [Pg.460]    [Pg.460]    [Pg.469]    [Pg.482]    [Pg.107]    [Pg.397]    [Pg.399]    [Pg.402]    [Pg.404]    [Pg.431]    [Pg.446]    [Pg.458]    [Pg.495]    [Pg.512]    [Pg.517]    [Pg.523]    [Pg.529]    [Pg.529]    [Pg.10]    [Pg.5]    [Pg.17]    [Pg.25]    [Pg.25]    [Pg.28]    [Pg.29]    [Pg.29]    [Pg.33]    [Pg.35]   
See also in sourсe #XX -- [ Pg.459 ]



SEARCH



Glacial

Glacial ice and related sediments

Glacial marine sediments

Glacial sediments

Glacials

© 2024 chempedia.info