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| 1 | Geochemistry and Sm-Nd systematics of the 1.67 Ga Buanji Group of southwestern Tanzania: Paleo-weathering, provenance and paleo-tectonic setting implications显示文摘We present major and trace and Nd-isotopic data of the^1.67 Ga Buanji Group of southwestern Tanzania in order to constrain the nature of their protolith and the intensity of chemical weathering in the source terranes and make inferences on the nature of climatic conditions during the late Paleoproterozoic in the region. Major and trace element contents of the shales from three stratigraphic formations are comparable to those of the post-Archaean Australian Shale(PAAS) and the average Proterozoic Shale(PS). They are characterized by enrichments in LREE relative to HREE((La/Yb)_(CN)=9.07-13.2;(Gd/Yb)cN = 1.51-1.85) and negative Eu anomalies(Eu/Eu~* = 0.61-0.81); features which are comparable to those of PAAS and PS, indicating upper continental sources. Provenance proxy ratios,together with abundances of Cr, Ni, Co and V that increase up-stratigraphy suggest a decreasing input of felsic detritus up-stratigraphy. Chemical Indices of Alteration(CIA) for the lower, middle and upper Buanji formations are 81. 76 and 79, respectively. These indices largely indicate intermediate(ca. 60-80)to extreme(>80) weathering intensities of the precursor rocks. These observations may suggest the prevalence of warm, humid climates during the late Paleoproterozoic in the region.The lower Buanji Formation yielded a depleted mantle Nd model age(T_(DM)) of 、2100 Ma which indicates an Eburnean parentage. T_(DM) ages of 2486-2155 Ma and 2535-2379 Ma obtained from middle and upper Buanji formations, respectively, suggest a progressive increase of sedimentary input from the Tanzania Craton up-stratigraphy. The Eburnean T_(DM) ages of the lower Buanji rocks are attributed to their derivation through denudation of a decaying topographic high composed predominantly of rocks that were generated during the Palaeoproterozoic Ubendian orogenesis, possibly in the realm of Columbian Supercontinent assembly. Overlapping T_(DM) ages between the middle and upper Buanji formations suggest multiple sources involving mixing of detritus from Archaean cratonic rocks and the Palaeoproterozoic Ubendian belt. However, the Archaean signal is relatively more pronounced in the upper Buanji Formation, suggesting sediments derivation from the craton, to the north of the basin. The middle Buanji Formation suggests more diverse protolith,given the relatively larger spread in the T_(DM) ages. The Nb/Ta, Zr/Sm and Ce/Pb ratios coupled with the negative Nb and Ta anomalies, relative to primitive mantle, suggest that the tectonic setting of the source rocks for the Buanji sediments was a subduction zone akin to that generating modern sland Arc Basalts. Thus, we suggest that the Buanji's palaeogeography is consistent with an extensional continental backarc basin during the late Paleoproterozoic. | Charles H.Kasanzu Makenya A.H.Maboko Shukrani Manya | 2017 | Geoscience Frontiers2017，8，5： | 2 |
| 2 | Muscular dystrophy and neuronal migration disorder caused by mutations in a glycosyltransferase,POMGnT1显示文摘 | Yoshida A Kobayashi K Manya H Taniguchi K Kano H Mizuno M | 2001 | Dev Cell2001，1，5： | 1 |
| 3 | Fluidized-bed co-gasification of residual biomass/poor coal blends for fuel gas production显示文摘 | PAN Y G VELO E ROCA X MANYA J J PUIGJANER L | 2000 | Fuel2000，79，11： | 1 |
| 4 | Increased bisecting and core-fucosylated N-glycans on mutant human amyloid precursor proteins显示文摘 | AKASAKA-MANYA K MANYA H SAKURAI Y | 2008 | Glycoconj J2008，25，8： | 1 |
| 5 | An efficient solver for weighted MAX-SAT显示文摘 | ALSINEL T MANYA F PLANES J | 2008 | Journal of Combinatorial Optimization2008，43，1： | 1 |
| 6 | Antiaging research using klotho mice显示文摘 | Manya H Akasaka-M K Endo T | 2010 | Yakugaku Zasshi2010，130，1： | 1 |
| 7 | Isoniazid-induced elevation of cerebrospinal fluid (CSF) GABA levels and effects on chorea in huntington's disease显示文摘 | MANYA B V KATZ L HARE T A | 1981 | Annals of Neurology1981，10，1： | 1 |
| 8 | Pyrolysis for biochar purposes:a review to establish current knowledge gaps and research needs显示文摘 | Manya Joan J | 2012 | Environmental Science&Technology2012，46，15： | 1 |
| 9 | Biochemical characterization of vari- ous catalytic complexes of the brain plateletactivating factor acetylhy- drolase显示文摘 | Manya H Aoki J Kato H | 1999 | J Biol Chem1999，274，45： | 1 |
| 10 | Investigation of the mechanism by which cyclophosphamide alters cytochrome P450 in male rats显示文摘 | Mcclure | 1992 | Biochemical Pharmacology1992，43，12： | 1 |
| 11 | Klotho protein deficiency and aging显示文摘 | MANYA H AKASAKA-MANYA K ENDO T | 2010 | Geriatr Gerontol Int2010，10，1： | 1 |
| 12 | The epidemiology of hospitalization with diarrhea in rural Kenya:the utility of existing health facility data in developing countries显示文摘 | Tornheim JA Manya AS Oyando N | 2010 | Int J Infect Dis2010，14，： | 1 |
| 13 | Fluidized bed co-gasification of residual biomass/poor coalblends for fuel gas production 显示文摘 | PAN Y G VELO E ROCA X MANYA J J PUIGJANER L | 2000 | Fuel2000，79，11： | 1 |
| 14 | Different roles of the two components of human protein O- mannosyltransferase, POMT1 and POMT2 显示文摘 | Akasaka-Manya K Manya H Hayashi M | 2011 | Biochem Biophys Res Commun2011，411，4： | 1 |
| 15 | Muscular dystrophy and neuronal migiation disorder caused by mutations in a glycosyltransferase,POMGnT1显示文摘 | Yoshida A Kobayashi K Manya H | 2001 | Dev Cell2001，1，： | 1 |
| 16 | Fast image recovery using variable splitting and con- strained optimization 显示文摘 | Manya V Afonso Jose M Bioucas-Dias Mario A T Figueire- do | 2010 | IEEE Transactions on Image Pro- cessing2010，19，9： | 1 |
| 17 | The SAT problem of signed CNF formulas 显示文摘 | BECKERT B HAHNLE R MANYA F | 2000 | Labelled Deduction Applied Logic Series Kluwer Dordrecbt2000，17，： | 1 |
| 18 | Reso-lution based lower bounds in MAXSAT显示文摘 | CHUMIN LI MANYA FELIP NOUREDINE MOHAMEDOU | 2010 | Journal of Con- straints2010，15，4： | 1 |
| 19 | The immunophilin ligands cyclosporin A and FK506 suppress prostate cancer cell growth by androgen receptor dependent and indep mechanisms显示文摘 | Sumudra Periyasamy Manya Warrier | 2007 | Endocrinology2007，148，10： | 1 |
| 20 | Pyrolysis for biochar purposes : a review to estab- lish current knowledge gaps and research needs显示文摘 | Manya J J | 2012 | Environ- mental Science and Technology2012，46，15： | 1 |
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