Abstract
The trace and rare earth elements of ultramafic xenoliths from Peiliao area and combined with major elements proposed by Yang et al. (1987)[1] in order to understand the origin of these ultramafic xenoliths and the geochemical characteristics of the upper mantle. Spinel lherzolite mainly composed of olivine, orthopyroxene, clinopyroxene and spinel is the major rock type of ultramafic xenoliths found in Peiliao area, Penghu Islands, Taiwan. Based on major elements of ultramafic xenoliths analyzed in the present study (Yang et al., 1987)[1], we suggest that these xenoliths belong to the residual upper mantle after different degrees of partial melting. The ultramafic xenoliths have higher MgO content, but lower Al2O3, TiO2 and Na2O contents than primitive mantle proposed by Sun and McDonough (1989)[2], indicating that they represent residues formed by different degrees of partial melting from the upper mantle. Incompatible elements and LREEs tend to decrease with increasing MgO/ΣFeO ratios which may be related to the partial melting of the mantle source. These correlations mentioned above indicate that the ultramafic xenoliths from Peiliao area represent the residual materials after the primitive mantle had undergone partial melting. The spidergrams and the chondrite-normalized REE patterns reveal that ultramafic xenoliths from Peiliao area are depleted which indicate that the mantle beneath the study area had undergone relatively smaller degree of partial melting.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Yang, H.J., Chen, J.C., Yang, H.Y.: Geochemistry of ultramafic nodules in basaltic rocks from Peiliao, Penghu Island and Liutsu, Northern Taiwan. Proc. Geol. Soc. China 30, 40–56 (1987)
Sun, S.S., McDonough, W.F.: Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. Journal Geological Society of London Special Publication 42, 313–345 (1989)
Juang, W.S., Chen, J.C.: The nature and origin of Penghu basalts: a review. Bulletin of The Central Geological Survey (12), 147–200 (1999)
Ho, K.S., Chen, J.C., Smith, A.D., Juang, W.S.: Petrogenesis of two groups of pyroxeneite from Tungchihsu, Penghu Islands, Taiwan Strain: implicateons for mantle metasomatism beneath SE China. Chemical Geology 167, 355–372 (2000)
Yang, H.Y., Chen, C.H., Tsai, C.L.: Ultramafic xenoliths in the basaltic rocks on Penghu Islands. Acta Geol. Taiwanica 21, 68–80 (1982)
Wang, K.L., O’Reilly, S.Y., Honda, M., Matsumoto, T., Griffin, W.L., Pearson, N.J., Zhang, M.: Co-rich sulfides in mantle periodtites from Penghu Islands, Taiwan: Footprints of Proterozoic mantle plumes under the Cathaysia Block. Journal of Asian Earth Sciences 37, 229–245 (2010)
Chen, J., Jahn, B.M.: Crustal evolution of southeastern China: Nd and Sr isotopic evidence. Tectonophysics 284, 101 (1998)
Chung, S.L., Sun, S.S., Tu, K., Chen, C.H., Lee, C.Y.: Late Cenozoic basaltic volcanism around the Taiwan Strait, SE China: product of lithosphere-asthenosphere interaction during continental extension. Chem. Geol. 112, 1–20 (1994)
Smith, S.D.: The geodynamic significance of the DUPAL anomaly in Asia. In: Flower, M.F.J., Chung, S.L., Lo, C.H., Lee, T.T. (eds.) Mantle Dynamics and Plate Interactions in East Asia. Geodynamics Series, vol. 29, pp. 89–105. American Geophysical Union (1998)
Juang, W.S., Chen, J.C.: Geochronology and geochemistry of Penghu basalts, Taiwan Strait and their tectonic significance. J. Southeast Asian Earth Sci. 7(2-3), 185–193 (1992)
Chen, C.H., Hsieh, P.S., Wang, K.L., Yang, H.J., Lin, W., Liang, Y.H., Lee, C.Y., Yang, H.C.: Zircon LA-ICPMS U-Pb ages and Hf isotopes of Huayu (Penghu Islands) volcanics in the Taiwan Strait and tectonic implication. Journal of Asian Earth Sciences 37, 17–30 (2010)
Streckeisen, A.: To each plutonic rock its proper name. Earth Sci. Rev. 12, 1–33 (1976)
Carter, J.L.: Mineralogy and chemistry of the earth’s upper mantle based on the partial fusion-partial crystallization model. Geol. Soc. Am. Bull. 81, 2021–2034 (1970)
Ho, K.S., Chen, J.C.: Petrology and chemistry of ultramafic nodules in kimberlite from South Aferica. Bulletin of the National Museum of Natural Science 1, 111–128 (1989)
Mercier, J.C.C.: Single pyroxene thermobarometry. Tectonophysic 70, 1–37 (1980)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2012 Springer-Verlag GmbH Berlin Heidelberg
About this chapter
Cite this chapter
Lee, YT. et al. (2012). Trace Element Characteristics of Ultramafic Xenoliths in Basaltic Rocks from Penghu Islands, Taiwan. In: Sambath, S., Zhu, E. (eds) Frontiers in Computer Education. Advances in Intelligent and Soft Computing, vol 133. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27552-4_92
Download citation
DOI: https://doi.org/10.1007/978-3-642-27552-4_92
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-27551-7
Online ISBN: 978-3-642-27552-4
eBook Packages: EngineeringEngineering (R0)