Distribution and behavior of lead in the K-alkaline rocks from the Roccamonfina Volcano (southern Italy)
作者： G. Calderoni , B. Giannetti , U. Masi
DOI: 10.1016/0009-2541(81)90116-9
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摘要: Abstract The Pb content in whole rocks, matrix and mineral separates (sanidine, leucite, biotite phlogopite) from 53 igneous rocks of the K-alkaline suites Roccamonfina Volcano, has been measured by means polarographic technique. An increase is observed with magmatic differentiation, indicating that behaves as a magmatophile element these magma suites. Moreover, enriched factor ∼1.7 primitive high-K series compared K-series, this respect, similar to K other LIL elements. Sanidine ( x = 44.7 ± 16.9 ppm ) ∼10 times relative both leucite 3.6 1.9 5.3 3.1 ), good agreement different coordination numbers structures minerals. Average D san , leuc biot are 0.48, 0.05, 0.14, respectively. Primitive basalt have much higher (alkali olivine basalts trachybasalts, 16.3 ; basalts, 9.7 than “average” alkali 4.3 close crust 12 ). display high 28.4 those several granitic rocks. Plots vs. incompatible elements (ratio ratio) suggest HKS KS parental magmas could be derived mixing between normal mantle material LIL-enriched material.
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sci-hub.se 参考文章(19)
R. K. O’Nions, R. Powell, The Thermodynamics of Trace Element Distribution Springer Netherlands. pp. 349- 363 ,(1977) , 10.1007/978-94-010-1252-2_17
C. J. Hawkesworth, R. Vollmer, Crustal contamination versus enriched mantle: 143 Nd/ 144 Nd and 87 Sr/ 86 Sr evidence from the Italian volcanics Contributions to Mineralogy and Petrology. ,vol. 69, pp. 151- 165 ,(1979) , 10.1007/BF00371858
G. Calderoni, Determination of lead in igneous rocks by differential pulse anodic stripping voltammetry at an HMDE. Talanta. ,vol. 28, pp. 65- 67 ,(1981) , 10.1016/0039-9140(81)80141-5
F.J Flanagan, U.S. Geological Survey standards—II. First compilation of data for the new U.S.G.S. rocks Geochimica et Cosmochimica Acta. ,vol. 33, pp. 81- 120 ,(1969) , 10.1016/0016-7037(69)90094-5
William P. Leeman, Partitioning of Pb between volcanic glass and coexisting sanidine and plagioclase feldspars Geochimica et Cosmochimica Acta. ,vol. 43, pp. 171- 175 ,(1979) , 10.1016/0016-7037(79)90056-5
Andrew D. Saunders, John Tarney, Stephen D. Weaver, Transverse geochemical variations across the Antarctic Peninsula: Implications for the genesis of calc-alkaline magmas web science. ,vol. 46, pp. 344- 360 ,(1980) , 10.1016/0012-821X(80)90050-3
Charles H. Langmuir, Robert D. Vocke, Gilbert N. Hanson, Stanley R. Hart, A general mixing equation with applications to Icelandic basalts Earth and Planetary Science Letters. ,vol. 37, pp. 380- 392 ,(1978) , 10.1016/0012-821X(78)90053-5
B. D. Tiwari, Magmatic differentiation of the volcanics at Pavagarh, Gujarat, India Bulletin Volcanologique. ,vol. 35, pp. 1129- 1177 ,(1971) , 10.1007/BF02596869
S. Kesson, R. C. Price, The major and trace element chemistry of kaersutite and its bearing on the petrogenesis of alkaline rocks Contributions to Mineralogy and Petrology. ,vol. 35, pp. 119- 124 ,(1972) , 10.1007/BF00370923
R. Vollmer, C.J. Hawkesworth, Lead isotopic composition of the potassic rocks from Roccamonfina (South Italy) Earth and Planetary Science Letters. ,vol. 47, pp. 91- 101 ,(1980) , 10.1016/0012-821X(80)90107-7