Geochemistry of Tektites from Maoming of Guandong Province, China
We measured the major and trace element contents
and Rb-Sr isotopic compositions of 12 tektites from the Maoming
area, Guandong province (south China). All the samples studied are
splash-form tektites which show pitted or grooved surfaces with
schlieren structures on some surfaces. The trace element ratios Ba/Rb
(avg. 4.33), Th/Sm (avg. 2.31), Sm/Sc (avg. 0.44), Th/Sc (avg. 1.01) ,
La/Sc (avg. 2.86), Th/U (avg. 7.47), Zr/Hf (avg. 46.01) and the rare
earth elements (REE) contents of tektites of this study are similar to the
average upper continental crust. From the chemical composition, it is
suggested that tektites in this study are derived from similar parental
terrestrial sedimentary deposit which may be related to post-Archean
upper crustal rocks. The tektites from the Maoming area have high
positive εSr(0) values-ranging from 176.9~190.5 which indicate that
the parental material for these tektites have similar Sr isotopic
compositions to old terrestrial sedimentary rocks and they were not
dominantly derived from recent young sediments (such as soil or
loess). The Sr isotopic data obtained by the present study support the
conclusion proposed by Blum et al. (1992)[1] that the depositional age
of sedimentary target materials is close to 170Ma (Jurassic). Mixing
calculations based on the model proposed by Ho and Chen (1996)[2]
for various amounts and combinations of target rocks indicate that the
best fit for tektites from the Maoming area is a mixture of 40% shale,
30% greywacke, 30% quartzite.
1] J. D. Blum , D. A. Papanastassiou, C. Koeberl, and G. J. Wasserburg, "Nd
and Sr isotopic study of Australasian tektites:New constraints on the
provenance and age of target material", Geochim. Cosmochim. Acta, 56,
pp. 483-492, 1992.
[2] K. S. Ho, and J. C. Chen, "Geochemistry and origin of tektites from the
penglei area, Hainan province, southern China." J. of Southeast Asian
Earth Sciences Vol. 13, No. 1, pp. 61-72, 1996.
[3] A. Montanari, and C. Koeberl, "Impact Stratigraphy: The Italian Record."
Springer, Heideberg, 2000.
[4] L. Folco, B. P. Glass, M. D-Orazio, P. Rochette, "A common
volatilization trend in Transantarctic Mountain and Australasian
microtektites: Implications for their formation model and parent crater
location." Earth and Planetary Science Letters 293, pp.135-139, 2010.
[5] F. Moynier, P. Beck, F. Jourdan, Q. Z. Yin, U. Reimold, C. Koeberl,
"Isotopic fractionation of zinc in tektites." Earth and Planetary Science
Letters 277, pp. 482-489, 2009.
[6] B. P. Glass, "Tektites and microtektites: key facts and inferences."
Tectonophysics 171, pp. 393-404, 1990.
[7] C. Koeberl, "Tektite origin by hypervelocity asteroidal or cometary
impact:Target rocks, source craters, and mechanisms." Geol. Soc. Am.
Special Paper 293, pp. 133-151, 1994.
[8] A. Montanari, and C. Koeberl, "Impact Stratigraphy: The Italian Record."
Springer, Heideberg, 2000.
[9] P. Ma, K. Aggrey, C. Tonzola, C. Schnabel, P. De Nicola, G. F. Herzog, J.
T. Wasson, B. P. Glass, L. Brown, F. Tera, R. Middleton and J. Klein,
"Beryllium-10 in Australasian tektites: constraints on the locateon of the
source crater." Geochim. Cosmochim. Acta 68, pp. 3883-3896, 2004.
[10] F. Moynier, C. Koeberl, P. Beck, F. Jourdan, P. Telouk, "Isotopic
fractionation of Cu in tektites." Geochimica et Cosmochimica Acta 74,
pp. 799-807, 2010.
[11] Y. T. Lee, J. C. Chen, K. S. Ho and W. S. Juang, "Geochemical studies of
tektites from East Asia." Geochem. Jour. 38, pp. 1-17, 2004.
[12] B. P. Glass, H. Huber and C. Koeberl "Geochemistry of Cenozoic
microtektites and clinopyroxene-bearing sphereules." Geochim.
Cosmochim. Acta 68, pp. 3971-4006, 2004.
[13] B. P. Glass and J. E. Pizzuto, "Geographical variation in Australasian
microtektite concentrations: Implications concerning the location and
size of the source crater." J. Geophys. Res. 99, pp. 19075-19081, 1994.
[14] C. Koeberl, "Geochemistry and origin of Muong Nong-type tektites."
Geochim. Cosmochim. Acta 56, pp. 1033-1064, 1992.
[15] C. Koeberl, "Geochemistry and origin of Muong Nong-type tektites."
Geochim. Cosmochim. Acta 56, pp. 1033-1064, 1992.
[16] C. Koeberl, F. Kluger and W. Kiesl, "Geochemistry of Muong Nong-type
tektites V: unusual ferric/ferrous ratio." Meteoritics 19, pp. 253-254,
1984.
[17] P. H. Stauffer, "Anatomy of the Australasian tektite strewn field and the
probable site of its source crater." In Proceedings of the 3rd Regional
Conference on Geology and Mineral Resources of Southeast Asia,
Bangkok, Thailand. pp. 285-289, 1978.
[18] J. B. Hartung and A. R. Rivolo, "A possible source in Cambodia for
Australasian tektites." Meteoritics 14, pp. 153-159, 1979.
[19] R. A. Dunlap and A. D. E. Sibley, "A Mossbauer effect study of Fe-site
occupancy in Australasian tektites." J. Non-Cryst. Solids 337,pp.36-41,
2004.
[20] L. Folco, P. Rochette, N. Perchiazzi, M. D-Orazio, M. Laurenzi, M.
Tiepolo, "Microtektites from northern Victoria Land Transantarctic
Mountains." Geology 36, pp. 291-294, 2008.
[21] L. Folco, M. D-Orazio, M. Tiepolo, S. Tonarini, L. Ottolini, N. Perchiazzi,
P. Rochette, B. P. Glass, "Transantarctic Mountain microtektites:
geochemical affinity with Australasian microtektites." Geochim.
Cosmochim. Acta 73, pp. 3694-3722, 2009.
[22] B. P. Glass, C. Koeberl, "Australasian microtektites and associated
impact ejecta in the South China Sea and the Middle Pleistocene
supereruption of Toba." Meteorit. Planet. Sci. 41, pp. 305-326, 2006.
[23] S. M. Mclennan, and S. R. Taylor, "Th and U in sedimentary rocks:
crustal evolution and sedimentary recyling." Nature 285, pp. 621-624,
1985.
[24] S. M. Mclennan, and S. R. Taylor, "Th and U in sedimentary rocks:
crustal evolution and sedimentary recyling." Nature 285, pp. 621-624,
1985.
[25] G. Schmidt, L. Zhoi, J. T. Wasson, "Iridium anomaly associated with the
Australian tektite-producing impact:Masses of the impactor and of the
Australian tektites." Geochim. Cosmochim. Acta 57,pp. 4851-4859,
1993.
[26] T. Sato, "Regional geology and stratigraphy : Southeast Asia and Japan."
In The Jurassic of the Circum-Pacific(Edited by Westermann G. E. G.),
pp. 194-213. Cambridge University Press, 1992.
[27] K. C. Condie, "Chemical composition and evolution of the upper
continental crust: Contrasting results from surface samples and shales."
Chem. Geol. 104, pp. 1-37, 1993.
1] J. D. Blum , D. A. Papanastassiou, C. Koeberl, and G. J. Wasserburg, "Nd
and Sr isotopic study of Australasian tektites:New constraints on the
provenance and age of target material", Geochim. Cosmochim. Acta, 56,
pp. 483-492, 1992.
[2] K. S. Ho, and J. C. Chen, "Geochemistry and origin of tektites from the
penglei area, Hainan province, southern China." J. of Southeast Asian
Earth Sciences Vol. 13, No. 1, pp. 61-72, 1996.
[3] A. Montanari, and C. Koeberl, "Impact Stratigraphy: The Italian Record."
Springer, Heideberg, 2000.
[4] L. Folco, B. P. Glass, M. D-Orazio, P. Rochette, "A common
volatilization trend in Transantarctic Mountain and Australasian
microtektites: Implications for their formation model and parent crater
location." Earth and Planetary Science Letters 293, pp.135-139, 2010.
[5] F. Moynier, P. Beck, F. Jourdan, Q. Z. Yin, U. Reimold, C. Koeberl,
"Isotopic fractionation of zinc in tektites." Earth and Planetary Science
Letters 277, pp. 482-489, 2009.
[6] B. P. Glass, "Tektites and microtektites: key facts and inferences."
Tectonophysics 171, pp. 393-404, 1990.
[7] C. Koeberl, "Tektite origin by hypervelocity asteroidal or cometary
impact:Target rocks, source craters, and mechanisms." Geol. Soc. Am.
Special Paper 293, pp. 133-151, 1994.
[8] A. Montanari, and C. Koeberl, "Impact Stratigraphy: The Italian Record."
Springer, Heideberg, 2000.
[9] P. Ma, K. Aggrey, C. Tonzola, C. Schnabel, P. De Nicola, G. F. Herzog, J.
T. Wasson, B. P. Glass, L. Brown, F. Tera, R. Middleton and J. Klein,
"Beryllium-10 in Australasian tektites: constraints on the locateon of the
source crater." Geochim. Cosmochim. Acta 68, pp. 3883-3896, 2004.
[10] F. Moynier, C. Koeberl, P. Beck, F. Jourdan, P. Telouk, "Isotopic
fractionation of Cu in tektites." Geochimica et Cosmochimica Acta 74,
pp. 799-807, 2010.
[11] Y. T. Lee, J. C. Chen, K. S. Ho and W. S. Juang, "Geochemical studies of
tektites from East Asia." Geochem. Jour. 38, pp. 1-17, 2004.
[12] B. P. Glass, H. Huber and C. Koeberl "Geochemistry of Cenozoic
microtektites and clinopyroxene-bearing sphereules." Geochim.
Cosmochim. Acta 68, pp. 3971-4006, 2004.
[13] B. P. Glass and J. E. Pizzuto, "Geographical variation in Australasian
microtektite concentrations: Implications concerning the location and
size of the source crater." J. Geophys. Res. 99, pp. 19075-19081, 1994.
[14] C. Koeberl, "Geochemistry and origin of Muong Nong-type tektites."
Geochim. Cosmochim. Acta 56, pp. 1033-1064, 1992.
[15] C. Koeberl, "Geochemistry and origin of Muong Nong-type tektites."
Geochim. Cosmochim. Acta 56, pp. 1033-1064, 1992.
[16] C. Koeberl, F. Kluger and W. Kiesl, "Geochemistry of Muong Nong-type
tektites V: unusual ferric/ferrous ratio." Meteoritics 19, pp. 253-254,
1984.
[17] P. H. Stauffer, "Anatomy of the Australasian tektite strewn field and the
probable site of its source crater." In Proceedings of the 3rd Regional
Conference on Geology and Mineral Resources of Southeast Asia,
Bangkok, Thailand. pp. 285-289, 1978.
[18] J. B. Hartung and A. R. Rivolo, "A possible source in Cambodia for
Australasian tektites." Meteoritics 14, pp. 153-159, 1979.
[19] R. A. Dunlap and A. D. E. Sibley, "A Mossbauer effect study of Fe-site
occupancy in Australasian tektites." J. Non-Cryst. Solids 337,pp.36-41,
2004.
[20] L. Folco, P. Rochette, N. Perchiazzi, M. D-Orazio, M. Laurenzi, M.
Tiepolo, "Microtektites from northern Victoria Land Transantarctic
Mountains." Geology 36, pp. 291-294, 2008.
[21] L. Folco, M. D-Orazio, M. Tiepolo, S. Tonarini, L. Ottolini, N. Perchiazzi,
P. Rochette, B. P. Glass, "Transantarctic Mountain microtektites:
geochemical affinity with Australasian microtektites." Geochim.
Cosmochim. Acta 73, pp. 3694-3722, 2009.
[22] B. P. Glass, C. Koeberl, "Australasian microtektites and associated
impact ejecta in the South China Sea and the Middle Pleistocene
supereruption of Toba." Meteorit. Planet. Sci. 41, pp. 305-326, 2006.
[23] S. M. Mclennan, and S. R. Taylor, "Th and U in sedimentary rocks:
crustal evolution and sedimentary recyling." Nature 285, pp. 621-624,
1985.
[24] S. M. Mclennan, and S. R. Taylor, "Th and U in sedimentary rocks:
crustal evolution and sedimentary recyling." Nature 285, pp. 621-624,
1985.
[25] G. Schmidt, L. Zhoi, J. T. Wasson, "Iridium anomaly associated with the
Australian tektite-producing impact:Masses of the impactor and of the
Australian tektites." Geochim. Cosmochim. Acta 57,pp. 4851-4859,
1993.
[26] T. Sato, "Regional geology and stratigraphy : Southeast Asia and Japan."
In The Jurassic of the Circum-Pacific(Edited by Westermann G. E. G.),
pp. 194-213. Cambridge University Press, 1992.
[27] K. C. Condie, "Chemical composition and evolution of the upper
continental crust: Contrasting results from surface samples and shales."
Chem. Geol. 104, pp. 1-37, 1993.
@article{"International Journal of Earth, Energy and Environmental Sciences:59089", author = "Yung-Tan Lee and Ren-Yi Huang and Jyh-Yi Shih and Meng-Lung Lin and Yen-Tsui Hu and Hsiao-Ling Yu and Chih-Cheng Chen", title = "Geochemistry of Tektites from Maoming of Guandong Province, China", abstract = "We measured the major and trace element contents
and Rb-Sr isotopic compositions of 12 tektites from the Maoming
area, Guandong province (south China). All the samples studied are
splash-form tektites which show pitted or grooved surfaces with
schlieren structures on some surfaces. The trace element ratios Ba/Rb
(avg. 4.33), Th/Sm (avg. 2.31), Sm/Sc (avg. 0.44), Th/Sc (avg. 1.01) ,
La/Sc (avg. 2.86), Th/U (avg. 7.47), Zr/Hf (avg. 46.01) and the rare
earth elements (REE) contents of tektites of this study are similar to the
average upper continental crust. From the chemical composition, it is
suggested that tektites in this study are derived from similar parental
terrestrial sedimentary deposit which may be related to post-Archean
upper crustal rocks. The tektites from the Maoming area have high
positive εSr(0) values-ranging from 176.9~190.5 which indicate that
the parental material for these tektites have similar Sr isotopic
compositions to old terrestrial sedimentary rocks and they were not
dominantly derived from recent young sediments (such as soil or
loess). The Sr isotopic data obtained by the present study support the
conclusion proposed by Blum et al. (1992)[1] that the depositional age
of sedimentary target materials is close to 170Ma (Jurassic). Mixing
calculations based on the model proposed by Ho and Chen (1996)[2]
for various amounts and combinations of target rocks indicate that the
best fit for tektites from the Maoming area is a mixture of 40% shale,
30% greywacke, 30% quartzite.", keywords = "Geochemistry, Guandong province, South China,
Tektites", volume = "5", number = "10", pages = "605-6", }