Big Chemical Encyclopedia

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

Articles Figures Tables About

Carbonates, pedogenic

MODERN PEDOGENIC CARBONATES Pedogenic carbonate formation... [Pg.58]

Ludwig KR, Paces JB (2002) Uranitrm-series dating of pedogenic silica and carbonate. Crater Flat, Nevada. Geochim Cosmochim Acta 66 487-506... [Pg.457]

Quade J, Ceding TE, Bowman JR (1989) Systematic variations in the carbon and oxygen isotopic composition of pedogenic carbonate along elevation transects in the southern Great Basin. United States Geol Soc Am Bull 101 464-475... [Pg.458]

Ku T-L, Bull WE, Frieman ST, Knauss KG (1979) °Th/ " U dating of pedogenic carbonates in gravelly desert soils of Vidal Valley, Southeastern California. Geol Soc Am Bull 90 1063-1073 Ku TH, Krauss KG, Mathieu GG (1977) Uranium in open ocean concentration and isotopic composition. Deep Sea Res 24 1005-1017... [Pg.572]

Frink, D. S. (1995), Application of the oxidizable carbon ratio (OCR) dating procedure and its implications for pedogenic research, in Pedological Perspectives in Archaeological Research, Soil Science Society Special Publication, Vol. 44, Soil Science Society of America, Madison, WI. [Pg.576]

The total calculated C02 sink of 0.30 Pg C/a is very close to that of Gombert (2002 0.302 Pg C/a), who used a different approach. Although our method seems valid, in terranes with large amounts of pedogenic carbonate (48% continental... [Pg.478]

Important, poorly-constrained variables in this carbon balance include temporal and spatial variations in precipitation and RO DIC, carbonate dust, and pedogenic carbonate and soil C02. In addition, ocean and lake response to river carbon input is not well known. Although marine and freshwater aquatic organisms can be fertilized by increases in N, P, Si, Fe, Zn and C02 (Cassar et al. 2004 Zondervan 2007), it is not clear how much of the... [Pg.479]

Gold in pedogenic carbonate revealed Meivyn J. Lintern Chris G. Ryan Robert M. Hough ... [Pg.71]

Quasi A, Hoefs J, Paul J (2006) Pedogenic carbonates as a proxy for palaeo-C02 in the Paleozoic atmosphere. Palaeogeogr Palaeochmatol Palaeoecol 242 110-125 Quay PD, TUbrook B, Wong CS (1992) Oceanic uptake of fossil fuel CO2 carbon-13 evidence. Science 256 74-79... [Pg.264]

Almost all rocks contain at least some iron. The more important minerals, in which Fe is a major constituent, are given with their Fe contents in Table 16.1. In all of these minerals except magnetite, iron is exclusively or predominantly in the bivalent state. During weathering, the iron is released from these minerals and secondary , pedogenic iron minerals are formed. The most important ones are Fe-contain-ing clay silicates and Fe oxides but under reducing conditions, Fe carbonates, sulphides and phosphates may also be formed. [Pg.433]

Quade J, Garzione C, Eiler J (2007) Paleoelevation reconstruction using pedogenic carbonates. Rev Mineral Geochem 66 53-87... [Pg.19]

Here we use calcite as the parent material but in its place just as easily could have used Ca-Mg silicate minerals. Pedogenic carbonate formation (to the left) is driven by both soil water and C02 loss. Seasonality of carbonate formation is not known for certain, but in most settings it is likely concentrated in the summer half year when soils are thawed or warmer, plants are active and evapotranspiring, and evaporation is greatest. [Pg.58]

The oxygen isotopic composition of Holocene pedogenic carbonate... [Pg.59]

One must be able to constrain soil temperature (7j to account for the fractionation between calcite and water. In this regard, several factors favor the use of pedogenic carbonates. One is that the fractionation factor between calcite... [Pg.60]

See other pages where Carbonates, pedogenic is mentioned: [Pg.171]    [Pg.443]    [Pg.543]    [Pg.543]    [Pg.543]    [Pg.639]    [Pg.312]    [Pg.474]    [Pg.475]    [Pg.476]    [Pg.478]    [Pg.285]    [Pg.4]    [Pg.71]    [Pg.71]    [Pg.172]    [Pg.438]    [Pg.53]    [Pg.54]    [Pg.54]    [Pg.55]    [Pg.56]    [Pg.56]    [Pg.56]    [Pg.57]    [Pg.58]    [Pg.59]    [Pg.59]    [Pg.59]    [Pg.61]    [Pg.61]   
See also in sourсe #XX -- [ Pg.23 , Pg.25 , Pg.26 , Pg.28 , Pg.30 , Pg.31 , Pg.32 , Pg.83 ]



SEARCH



Carbonate cements pedogenic

Gold in pedogenic carbonate revealed

Pedogenic

© 2024 chempedia.info