Matches in SemOpenAlex for { <https://semopenalex.org/work/W2155115076> ?p ?o ?g. }
- W2155115076 endingPage "1018" @default.
- W2155115076 startingPage "999" @default.
- W2155115076 abstract "Geochemical data for igneous rocks provide definitive evidence for the occurrence of open-system processes in magma bodies, including Replenishment by intrusion of primitive magma, Assimilation of anatectic wallrock melt and cumulate formation by Fractional Crystallization. A general class of models (Energy Conserved-RAFC or EC-RAFC) can be constructed, which allow simulation of geochemical paths for trace elements and isotopic ratios for magma undergoing simultaneous replenishment, assimilation and fractional crystallization during the approach to thermal equilibration. The general problem of EC-RAFC is formulated as a set of 3 + t + i + s coupled nonlinear ordinary differential equations, where the number of trace elements, radiogenic and stable isotope ratios simultaneously modeled are t, i and s, respectively. Partial melting of wallrock, modeled as fractional melting, is incorporated, as are sensible and latent heat effects. Temperature-dependent partition coefficients are used to describe trace element distributions. Solution of the set of differential equations, with magma temperature ( Tm ) as the independent variable, provides values for the average temperature of wallrock ( Ta ), fraction of melt within the magma body ( Mm ), mass of cumulates ( Mc ) formed, mass of wallrock involved in the thermal interaction ( Ma°), mass of anatectic melt assimilated ( Ma*), the concentration of t trace elements (Cm ) and i + s isotopic ratios (εm) in magma (melt plus cumulates) and in anatectic melt delivered to the evolving magma body. Input parameters include a user-defined equilibration temperature ( Teq ), the initial temperatures and compositions of magma, recharge magma, and wallrock, distribution coefficients and their temperature dependences, heats of fusion and crystallization, and isobaric specific heat capacities of the various constituents. For a priori defined magma recharge mass and Teq, the mass of wallrock heated to Teq is computed and the geochemical trajectory of melt is determined as magma temperature approaches Teq from its starting value, Tm°. The effects of imperfect extraction of anatectic wallrock melt may be accounted for by introduction of an extraction efficiency factor. Mathematical details of a simpler model, EC-AFC (no replenishment) are provided. Energy-constrained models have the advantage of linking thermal and chemical properties of magma chambers. Compared with ‘classical’ models that conserve mass and species only, they represent more complete assessments of the complex physicochemical dynamics governing the geochemical evolution of open-system magma bodies. Results of EC-AFC simulations demonstrate that geochemical trends can differ significantly from predictions based on ‘classical’ AFC even when recharge plays no role. Incorporation of energy conservation and partial melting into geochemical models allows important coupled effects to play their natural role." @default.
- W2155115076 created "2016-06-24" @default.
- W2155115076 creator A5082113063 @default.
- W2155115076 date "2001-05-01" @default.
- W2155115076 modified "2023-10-06" @default.
- W2155115076 title "Energy-Constrained Open-System Magmatic Processes I: General Model and Energy-Constrained Assimilation and Fractional Crystallization (EC-AFC) Formulation" @default.
- W2155115076 cites W118119334 @default.
- W2155115076 cites W1491111957 @default.
- W2155115076 cites W1569655878 @default.
- W2155115076 cites W1587077228 @default.
- W2155115076 cites W160456690 @default.
- W2155115076 cites W163607608 @default.
- W2155115076 cites W1889365448 @default.
- W2155115076 cites W1965433875 @default.
- W2155115076 cites W1965820181 @default.
- W2155115076 cites W1966016940 @default.
- W2155115076 cites W1968480064 @default.
- W2155115076 cites W1972645997 @default.
- W2155115076 cites W1973140431 @default.
- W2155115076 cites W1975476504 @default.
- W2155115076 cites W1977660954 @default.
- W2155115076 cites W1982005903 @default.
- W2155115076 cites W1982048660 @default.
- W2155115076 cites W1985934262 @default.
- W2155115076 cites W1988143821 @default.
- W2155115076 cites W1988901849 @default.
- W2155115076 cites W1989758724 @default.
- W2155115076 cites W1992188091 @default.
- W2155115076 cites W1992336848 @default.
- W2155115076 cites W1996110447 @default.
- W2155115076 cites W1997550903 @default.
- W2155115076 cites W2001875090 @default.
- W2155115076 cites W2002769246 @default.
- W2155115076 cites W2003747250 @default.
- W2155115076 cites W2004409367 @default.
- W2155115076 cites W2008484817 @default.
- W2155115076 cites W2008591480 @default.
- W2155115076 cites W2012366370 @default.
- W2155115076 cites W2015056229 @default.
- W2155115076 cites W2018262830 @default.
- W2155115076 cites W2022572264 @default.
- W2155115076 cites W2022874697 @default.
- W2155115076 cites W2022974215 @default.
- W2155115076 cites W2023540560 @default.
- W2155115076 cites W2024575502 @default.
- W2155115076 cites W2025722490 @default.
- W2155115076 cites W2026899000 @default.
- W2155115076 cites W2036413971 @default.
- W2155115076 cites W2037893193 @default.
- W2155115076 cites W2039548208 @default.
- W2155115076 cites W2040110163 @default.
- W2155115076 cites W2041980112 @default.
- W2155115076 cites W2042692134 @default.
- W2155115076 cites W2045471139 @default.
- W2155115076 cites W2046294829 @default.
- W2155115076 cites W2046622177 @default.
- W2155115076 cites W2047517625 @default.
- W2155115076 cites W2058983130 @default.
- W2155115076 cites W2067457001 @default.
- W2155115076 cites W2068584896 @default.
- W2155115076 cites W2069240891 @default.
- W2155115076 cites W2069875903 @default.
- W2155115076 cites W2072345472 @default.
- W2155115076 cites W2074429367 @default.
- W2155115076 cites W2074510344 @default.
- W2155115076 cites W2074832219 @default.
- W2155115076 cites W2076024715 @default.
- W2155115076 cites W2079096856 @default.
- W2155115076 cites W2079201446 @default.
- W2155115076 cites W2081831921 @default.
- W2155115076 cites W2083688044 @default.
- W2155115076 cites W2085548177 @default.
- W2155115076 cites W2087172989 @default.
- W2155115076 cites W2087511024 @default.
- W2155115076 cites W2087686567 @default.
- W2155115076 cites W2089337704 @default.
- W2155115076 cites W2096317422 @default.
- W2155115076 cites W2096428223 @default.
- W2155115076 cites W2099974007 @default.
- W2155115076 cites W2107521989 @default.
- W2155115076 cites W2116880139 @default.
- W2155115076 cites W2119691316 @default.
- W2155115076 cites W2120027408 @default.
- W2155115076 cites W2122687053 @default.
- W2155115076 cites W2123102314 @default.
- W2155115076 cites W2129544616 @default.
- W2155115076 cites W2133854134 @default.
- W2155115076 cites W2150081011 @default.
- W2155115076 cites W2152869600 @default.
- W2155115076 cites W2163683475 @default.
- W2155115076 cites W2167753502 @default.
- W2155115076 cites W2288317063 @default.
- W2155115076 cites W2313061604 @default.
- W2155115076 cites W2315818844 @default.
- W2155115076 cites W2316472930 @default.
- W2155115076 cites W2318888853 @default.
- W2155115076 cites W2321460055 @default.
- W2155115076 cites W2321954463 @default.