Big Chemical Encyclopedia

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

Articles Figures Tables About

Climate Quaternary

Delcourt, P. A., Petty, W. H. Delcourt, H. R. (1996). Late-Holocene formation of Lake Michigan beach ridges correlated with a 70-yr oscillation in global climate. Quaternary Research, 45, 321-6. [Pg.323]

Numerous theories exist as to how the Chilean deposits formed and survived. It has been postulated that the unique nitrate-rich caUche deposits of northern Chile owe their existence to an environment favorable to accumulation and preservation of the deposits, rather than to any unusual source of the saline materials (2). The essential conditions are an extremely arid climate similar to that of the Atacama desert in the 1990s, slow accumulation during the late Tertiary and Quaternary periods, and a paucity of nitrate-utilizing plants and soil microorganisms. [Pg.192]

Though an important part of the Quaternary climate puzzle, this view of the ice-age cycles is by itself quite incomplete. If Milankovitch forcings alone govern climate change then ... [Pg.464]

Ambrose, S.H. DeNiro, M.J. (1989). Climate and habitat reconstruction using stable carbon and nitrogen isotope ratios of collagen in prehistoric herbivore teeth from Kenya. Quaternary Research 31,407-422. [Pg.157]

In Chapter 3, hydrothermal and volcanic gas fluxes from submarine back-arc basins and island arc are estimated. These fluxes are compared with midoceanic ridge hydrothermal fluxes. Particularly, hydrothermal flux of CO2 is considered and the influences of this flux on global long-term carbon cycle and climate change in Tertiary-Quaternary ages are discussed in Chapter 4. [Pg.474]

Edwards RL, Cheng H, Murrell MT, Goldstein SJ (1997) Protactinium-231 dating of carbonates by thermal ionization mass spectrometiy imphcations for Quaternary climate change. Science 276 782-785... [Pg.20]

Speleothems and other secondary carbonate deposits such as tufa, travertines, lake carbonates and vein calcites have the potential to provide valuable information about past climate, hydrogeochemistry, landscape development and hominid evolution during the early Quaternary and Tertiary periods. Electron-spin resonance (Griin 1989, Rink 1997) and disequilibrium methods (Ludwig et al. 1992) have proved to be useful in... [Pg.424]

Eisenhauer A, Gogen K, Pemicka E, Mangini A (1992) Climatic influences on the growth rates of Mn cmsts during the Late Quaternary. Earth Planet Sci Lett 109 25-36 Elderfield H, Rickaby REM (2000) Oceanic Cd/P ratio and nutrient utilization in the glacial Southern Ocean. Natme 405 305-310... [Pg.525]

Berger, A. L. 1978. Long-term variations of daily insolation and quaternary climate changes. J. Atmospheric Sci. 35, 2362-67. [Pg.181]

Hedges, R.E.M., Stevens, R.E. and Richards, M.P. (2004). Bone as a stable isotope archive for local climatic information. Quaternary Science Reviews 23 959-965. [Pg.376]

Grootes, P. M and Stuiver, M. (1986). Ross Ice Shelf oxygen isotopes and west Antarctic climate history. Quaternary Research 26 49-67. [Pg.366]

Between 80 Ma and 50 Ma, the Namib rocks were eroded to a smooth peneplain (the Namib Unconformity). Namib Group Tertiary and Quaternary sedimentary debris was deposited in east-west to southwest trending paleochannels incised into Karibib marbles and schists on that Cretaceous age unconformity. From mid Tertiary to present, the central Namib region has maintained profoundly arid climatic conditions for the last 50 or more million years. Uplift initiated the post African erosion surface that filled valleys and channels with poorly sorted angular... [Pg.426]

Thompson P, Schwarcz HP, Ford DE (1974) Continental Pleistocene climatic variationa from speleothem age and isotopic data. Science 184 893-895 Thompson LG, Mosley-Thompson E, Henderson KA (2000) Ice-core palaeoclimate records in tropical South America since the last glacial maximum, J Quaternary Sci 15 377-394 Thompson LG, et al, (2006) Abrupt tropical climate change past and present, Proc Nat Acad Sci 103 10536-10543... [Pg.274]

Davis, M.B. Shaw, R.G. (2001) Range shifts and adaptive responses to quaternary climate changes. Science, 292, 673-9. [Pg.313]

The Lake Eyre Basin in Australia contains the world s largest ephemeral lake. During the Quaternary the climate fluctuated between relatively arid and... [Pg.3]

Kennett et al. Methane Hydrates in Quaternary Climate Change The Clathrate Gun... [Pg.3]

Kennett, J.P., Cannariato, G., Hendy, I.L., Behl, R.J., Methane Hydrates in Quaternary Climate Change The Clathrate Gun Hypothesis, The American Geophysical Union, Washington, DC (2003). [Pg.35]

The Indus alluvial plain of Punjab and Sindh provinces in Pakistan is of Quaternary age and is similar to the Ganges alluvial system of India and Bangladesh. The sediments of the plain have their provenance in the western Himalayas and are brought down by the River Indus and its tributaries. The alluvial deposits are widespread and thick (Smedley, 2005) and mostly form unconfined aquifers. However, in contrast to the Bengal basin, the aquifers are relatively oxic (Mahmood et al., 1998 Tasneem, 1999). The area also differs in having a more arid climate and greater proportion of Pleistocene deposits with greater apparent connectivity between the river systems and the aquifers (Smedley, 2005). [Pg.327]

Tibet we also obtained carbonates from older geomorphic surfaces, in order to develop some perspective on the isotopic effects of climate variability during the Quaternary. [Pg.67]

Cross SL, Seltzer GO, Fritz SC, Dunbar RB (2001) Late Quaternary climate change and hydrology of tropical South America inferred from an isotopic and chemical model of Lake Titicaca, Bolivia and Peru. Quat Res 56 1-9... [Pg.84]

Patterson, D. B., Farley, K. A. (1998) Extraterrestrial 3He in seafloor sediments Evidence for correlated lOOkyr periodicity in the accretion rate of interplanetary dusts, orbital parameters, and Quaternary climate. Geochim. Cosmochim. Acta, 62, 3669-82. [Pg.271]


See other pages where Climate Quaternary is mentioned: [Pg.407]    [Pg.460]    [Pg.460]    [Pg.460]    [Pg.460]    [Pg.460]    [Pg.462]    [Pg.463]    [Pg.433]    [Pg.19]    [Pg.399]    [Pg.453]    [Pg.453]    [Pg.459]    [Pg.459]    [Pg.32]    [Pg.5]    [Pg.211]    [Pg.255]    [Pg.1413]    [Pg.27]    [Pg.591]    [Pg.67]    [Pg.437]   
See also in sourсe #XX -- [ Pg.216 , Pg.220 , Pg.241 ]




SEARCH



Quaternary climate change

© 2024 chempedia.info