Zobrazeno 1 - 10
of 117
pro vyhledávání: '"A. C. Lasaga"'
Publikováno v:
Chemical Geology. 249:357-376
Ab initio calculations of vibrational frequencies ( ν ), reduced partition function ratios ( β ) of various gaseous and aqueous sulfur-bearing compounds, and isotopic fractionation factors ( α ) between them were performed on the multiple isotope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::621f8c6fdaa8c89f765b58313ec2362c
https://doi.org/10.1016/j.chemgeo.2008.01.020
https://doi.org/10.1016/j.chemgeo.2008.01.020
Publikováno v:
Earth and Planetary Science Letters. 268:225-238
Applying square adsorption-well and Morse potential models for the adsorption of a sulfur specie on a solid surface, we have evaluated the fractionation of four sulfur isotopes (32S, 33S, 34S and 36S) during chemisorption reactions. Heterogeneous rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9adc02d26c283ba64d83bb407ddf7366
https://doi.org/10.1016/j.epsl.2008.01.016
https://doi.org/10.1016/j.epsl.2008.01.016
Autor:
Antonio C. Lasaga, Andreas Luttge
Publikováno v:
The Journal of Physical Chemistry B. 109:1635-1642
Using a simple, feldspar-like model and the crystal-based reaction mechanism for water-rock kinetics being developed before, we show directly how the dissolution of euhedral faces of crystals are governed by the nonlinear quantity represented by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c03c5e051bf71f754acb2e0a65955868
https://doi.org/10.1021/jp047631q
https://doi.org/10.1021/jp047631q
Autor:
Andreas Luttge, Antonio C. Lasaga
Publikováno v:
European Journal of Mineralogy. 16:713-729
Incorporating mineral structures and interpreting the wide array of water-rock kinetic field and experimental data, requires abandoning molecule-based adsorption phenomenological models and the development and analysis of a general kinetic theory tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::862ae79a9cb6c4c5649a7ee7f50cdd20
https://doi.org/10.1127/0935-1221/2004/0016-0713
https://doi.org/10.1127/0935-1221/2004/0016-0713
Autor:
Antonio C. Lasaga, Andreas Luttge
Publikováno v:
American Mineralogist. 89:527-540
We introduce a general kinetic model for crystal dissolution that explicitly tracks all the various atoms in the crystal structure as part of the reaction mechanism. This model will be used in this and subsequent articles to develop a theory for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95d703d1886bfaa72eee918bb592b4fd
https://doi.org/10.2138/am-2004-0407
https://doi.org/10.2138/am-2004-0407
Autor:
Antonio C. Lasaga, Andreas Luttge
Publikováno v:
European Journal of Mineralogy. 15:603-615
A comprehensive dissolution rate theory that integrates individual surface reactions into an overall rate is developed. The dissolution theory is based on the movement of dissolution stepwaves stemming from surface defects. The net bulk rate associat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6afbeea0b23be56567ef42c2d929079c
https://doi.org/10.1127/0935-1221/2003/0015-0603
https://doi.org/10.1127/0935-1221/2003/0015-0603
Publikováno v:
Geochimica et Cosmochimica Acta. 67:1099-1116
The dissolution rate and mechanism of three different cleavage faces of a dolomite crystal from Navarra (near Pamplona), Spain, were studied in detail by vertical scanning interferometry techniques. A total of 37 different regions (each about 124 ×
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d81f0f5ee86c6f5c2aaacc1585ab1910
https://doi.org/10.1016/s0016-7037(02)00914-6
https://doi.org/10.1016/s0016-7037(02)00914-6
Autor:
Antonio C. Lasaga, Hiroshi Ohmoto
Publikováno v:
Geochimica et Cosmochimica Acta. 66:361-381
The first and possibly only major rise of atmospheric oxygen, from p O 2 ≤ 0.1% PAL (the present atmospheric level) to p O 2 ≥ 10% PAL, appears to have occurred sometime before 2 Ga ago, although the exact time of and the cause(s) for the rise ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f988fd6d3a2cfe9799bf9ba5c35fe7ad
https://doi.org/10.1016/s0016-7037(01)00685-8
https://doi.org/10.1016/s0016-7037(01)00685-8
Publikováno v:
Geochimica et Cosmochimica Acta. 65:1161-1185
The movement of fluids in the crust and upper mantle not only lead to important mineral reactions but also play an essential role in the geochemical cycling of elements and in controlling global change. Numerous papers have focused on calculation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88efe10b7a8666e69fba9ea738e0fc50
https://doi.org/10.1016/s0016-7037(00)00545-7
https://doi.org/10.1016/s0016-7037(00)00545-7