Geochemistry of metasedimentary rocks of the Proterozoic Xingxingxia complex: implications for provenance and tectonic setting of the eastern segment of the Central Tianshan Tectonic Zone, northwestern China

Canadian Journal of Earth Sciences - Tập 42 Số 3 - Trang 287-306 - 2005
Qiugen Li1, Shuwen Liu, Bao‐Fu Han1, Jian Zhang1, Zhu‐Yin Chu2
1The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing 100871, People's Republic of China
2Geological and Geophysical Institute, Chinese Academy of Science, Beijing 100029, People’s Republic of China.

Tóm tắt

The eastern segment of the Central Tianshan Tectonic Zone in northwestern China includes the Proterozoic metasedimentary Xingxingxia complex. Because these rocks have been extensively deformed and metamorphosed to greenschist or amphibolite facies, a geochemical and Nd isotopic study was undertaken to constrain their provenance and tectonic setting, as well as to evaluate the effects of weathering and sedimentary processes on the source rock signature. Major- and trace-element data indicate that these samples are characterized by negative Eu anomalies, low chemical index of alteration values, and high index of compositional variability values. Chemical index of alteration values and the plot of molecular proportions Al2O3–(CaO* + Na2O)–K2O suggest low degrees of weathering of the source. They are compositionally immature and poorly sorted. Geochemical data and immobile elemental ratios, for example Al2O3/TiO2, Cr/Th, Eu/Eu* and (La/Yb)n, indicate that the clastic materials were derived predominantly from felsic sources. Sedimentary tectonic discrimination diagrams demonstrate that most of the samples of the Xingxingxia complex were deposited on an active continental margin or continental island-arc setting. Rare-earth element distributions, εNd(t) values (calculated at 1.20 Ga, varying from –3.00 to +6.1), TDM model ages (ranging from 1.30 to 2.30), and t – εNd(t) plot, indicate that sediments of the Proterozoic Xingxingxia complex were derived from varying degrees of mixing between Paleoproterozoic crust and juvenile materials with the former predominating. There is an increased flux of juvenile materials from Weiya in the east through Dikar to Kumishi. The secondary juvenile source may be 1.2 Ga arc-magma materials.

Từ khóa


Tài liệu tham khảo

Ague J.J., 1991, Geology, 19, 855, 10.1130/0091-7613(1991)019<0855:EFMMTA>2.3.CO;2

Allen M.B., 1992, Tectonophysics, 220, 89, 10.1016/0040-1951(93)90225-9

Asiedu D.K, 2000, Geochemical Journal, 34, 155, 10.2343/geochemj.34.155

Awwiller D.N., 1991, Texas Gulf Coast. Geology, 19, 311

Bhat M.I., 2001, Precambrian Research, 108, 1, 10.1016/S0301-9268(00)00139-X

Bhatia M.R., 1983, Journal of Geology, 91, 611, 10.1086/628815

Bhatia M.R., 1985, Sedimentary Geology, 45, 97, 10.1016/0037-0738(85)90025-9

Blein O., 2003, Precambrain Research, 120, 193, 10.1016/S0301-9268(02)00112-2

Boghossian N.D., 1996, Journal of Geology, 104, 259, 10.1086/629824

Camiré G.E., 1993, Precambrian Research, 62, 285, 10.1016/0301-9268(93)90026-X

Carroll A.R., 1995, Geological Society of America Bulletin, 107, 571, 10.1130/0016-7606(1995)107<0571:LPTAON>2.3.CO;2

Chen B., 2002, Geological Magazine, 139, 1, 10.1017/S0016756801006100

Chen Y.B., 1998, Acta Mineralogica Sinica, 18, 377

Chen C.M., 1999, Tectonophysics, 302, 23, 10.1016/S0040-1951(98)00273-X

Chen B., 2001, Science Chian, Series D, 31, 226

Condie K.C., 1992, Sedimentary Geology, 77, 51, 10.1016/0037-0738(92)90103-X

Condie K.C., 1995, USA. Geochimica et Cosmochimica Acta, 59, 279, 10.1016/0016-7037(94)00280-Y

Cox R., 1995, Geochimica et Cosmochimica Acta, 59, 2919, 10.1016/0016-7037(95)00185-9

Cullers R.L., 1994, USA. Geochimica et Cosmochimica Acta, 58, 4955, 10.1016/0016-7037(94)90224-0

Deng Z.Q., 1992, Xinjiang Geology, 10, 233

Depaolo D.J., 1981, Nature, 29, 193, 10.1038/291193a0

Dobretsov N.L., 1995, International Geology Review, 37, 335, 10.1080/00206819509465407

Farmer G.L., 2001, Journal of South American Earth Sciences, 14, 437, 10.1016/S0895-9811(01)00053-0

Fedo C.M., 1995, Geology, 23, 921, 10.1130/0091-7613(1995)023<0921:UTEOPM>2.3.CO;2

Fedo C.M., 1996, Geochimica et Cosmochimica Acta, 60, 1751, 10.1016/0016-7037(96)00058-0

Fedo C.M., 1997, Precambrian Research, 86, 210

Feng X.C., 1996, Xingjiang. Xingjiang Geology, 14, 329

Feng R., 1990, Geochimica et Cosmochimica Acta, 54, 1061, 10.1016/0016-7037(90)90439-R

Floyd P.A., 1987, Journal of Geological Society (of London), 144, 531, 10.1144/gsjgs.144.4.0531

Fralick P.W., 1997, Sedimentary Geology, 113, 111, 10.1016/S0037-0738(97)00049-3

Gao S., 1995, Earth and Planetary Science Letters, 133, 81, 10.1016/0012-821X(95)00077-P

Gao J., 1995, Tectonophysics, 250, 151, 10.1016/0040-1951(95)00026-6

Gao J., 1998, Tectonophysics, 287, 213, 10.1016/S0040-1951(97)00211-4

Garcia D., 1994, Journal of Geology, 102, 411, 10.1086/629683

Girty G.H., 1994, Journal of Sedimentary Research, 64, 68

Girty G.H., 1996, Journal of Sedimentary Research, 66, 107

Gleason J.D., 1994, Geology, 22, 347, 10.1130/0091-7613(1994)022<0347:NILOTT>2.3.CO;2

Grandstaff D.F., 1986, Precambrian Research, 32, 97, 10.1016/0301-9268(86)90003-3

Gromet L.P., 1984, Geochimica et Cosmochimica Acta, 48, 2469, 10.1016/0016-7037(84)90298-9

Gu L.X., 1990, Journal of Guilin College of Geology, 10, 49

Guo Z.J., 2001, Research Project, 1

Harnois L., 1988, Sedimentary Geology, 55, 319, 10.1016/0037-0738(88)90137-6

Hemming S.R., 1995, Journal of Geology, 103, 147, 10.1086/629733

Hendrix M.S., 2000, Journal of Sedimentary Research, 70, 520, 10.1306/2DC40924-0E47-11D7-8643000102C1865D

Hendrix M.S., 1992, Geological Society of America Bulletin, 104, 53, 10.1130/0016-7606(1992)104<0053:SRACIO>2.3.CO;2

Herron M.M., 1988, Journal of Sedimentary Petrology, 58, 820

Hu S.X., 1990, China, 32

Hu A.Q., 2000, Tectonophysics, 328, 15, 10.1016/S0040-1951(00)00176-1

Jahn B.M., 1995, Geochimica et Cosmochimica Acta, 59, 2239, 10.1016/0016-7037(95)00103-7

Jahn B.M., 2000, Transactions of the Royal Society of Edinburgh: Earth Sciences, 91, 181, 10.1017/S0263593300007367

Li X.H., 2003, Earth and Planetary Science Letters, 211, 207, 10.1016/S0012-821X(03)00229-2

Liu S.W., 2002, Precambrian Research, 117, 41, 10.1016/S0301-9268(02)00063-3

Liu S.W., 2004, Series D, 47, 1085, 10.1360/03yd0177

MacDaniel D.K., 1994, Geochimica et Cosmochimica Acta, 58, 931, 10.1016/0016-7037(94)90516-9

Maniar P.D., 1989, Geological Society of America Bulletin, 101, 635, 10.1130/0016-7606(1989)101<0635:TDOG>2.3.CO;2

Maynard J.B., 1982, Special Publication, 10, 551, 10.1144/GSL.SP.1982.010.01.36

McLennan S.M., 1989, Reviews in Mineralogy, 21, 169

McLennan S.M, 1991, Journal of Geology, 99, 1, 10.1086/629470

McLennan S.M., 1990, Geochimica et Cosmochimica Acta, 54, 2015, 10.1016/0016-7037(90)90269-Q

McLennan S.M., 1993, Special Paper, 284, 21

McLennan S.M., 1995, Geochimica et Cosmochimica Acta, 59, 1153, 10.1016/0016-7037(95)00032-U

Mongelli G., 1993, Chemical Geology, 103, 17, 10.1016/0009-2541(93)90288-T

Morey G.B., 1997, Journal of Sedimentary Research, 67, 105

Murphy J.B., 2002, Earth-Science Reviews, 59, 77, 10.1016/S0012-8252(02)00070-3

Nelson B.K., 1988, Journal of Sedimentary Petrology, 58, 348

Nesbitt H.W., 1979, Nature, 279, 206, 10.1038/279206a0

Nesbitt H.W., 1982, Nature, 299, 715, 10.1038/299715a0

Nesbitt H.W., 1984, Geochimica et Cosmochimica Acta, 48, 1523, 10.1016/0016-7037(84)90408-3

Nesbitt H.W., 1989, Journal of Geology, 97, 129, 10.1086/629290

Nesbitt H.W., 1996, Sedimentology, 43, 341, 10.1046/j.1365-3091.1996.d01-12.x

Nesbitt H.W., 1980, Geochimica et Cosmochimica Acta, 44, 1659, 10.1016/0016-7037(80)90218-5

Plank T., 1988, Earth and Planetary Science Letters, 90, 349, 10.1016/0012-821X(88)90135-5

Qiao G.S., 1988, Series A, 31, 1263

Roser B.P., 1986, Journal of Geology, 94, 635, 10.1086/629071

Roser B.P., 1988, Chemical Geology, 67, 119, 10.1016/0009-2541(88)90010-1

Rui Z.Y., 2002, Acta Geologica Sinica, 76, 83

Sengör A.M.C., 1993, Nature, 364, 299, 10.1038/364299a0

Shu L.S., 2000, Chinese Journal of Geochemistry, 19, 193, 10.1007/BF03166877

Slack J.F., 1994, Geochimica et Cosmochimica Acta, 58, 3633, 10.1016/0016-7037(94)90155-4

Tapponnier P., 1979, Journal of Geophysical Research, 84, 3425, 10.1029/JB084iB07p03425

Tarney J., 1977, Journal of the Geological Society (of London), 134, 153, 10.1144/gsjgs.134.2.0153

Van de Kamp P.C., 1985, Transactions of the Royal Society of Edinburgh: Earth Sciences, 76, 411, 10.1017/S0263593300010646

Windley B.F., 1990, Geology, 18, 128, 10.1130/0091-7613(1990)018<0128:PAACRO>2.3.CO;2

Xiao S.H., 2004, Precambrian Research, 130, 1, 10.1016/j.precamres.2003.10.013

Xiu Q.Y., 2002, Xinjiang Geology, 20, 335

Yang H.M., 1998, Precambrian Research, 92, 37, 10.1016/S0301-9268(98)00067-9

Yin A., 1998, Tectonics, 17, 1, 10.1029/97TC03140

Zhang L.C., 2003, Ore Geology Reviews, 23, 71, 10.1016/S0169-1368(03)00016-7

Zhao J.X., 1992, Geochimica et Cosmochimica Acta, 56, 921, 10.1016/0016-7037(92)90037-J

Thông tin
Thông tin xuất bản

Canadian Journal of Earth Sciences

Tập 42 Số 3

287-306

Thông tin tác giả