全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Xianhua Li , Hanwen Zhou , Shijiang Ding ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2000, Vol.45 (10), pp.956-960Springer
摘要:... They are characterized by extreme depletion of Th, Nb, Ta and LREEs, resembling the depleted N-type mid-ocean ridge basalts (MORB). Field relations suggest that the protolith of the metamorphosed mafic rocks were likely formed in Paleozoic. These metamorphosed mafic rocks wit...
作者:Jun-Hui Bi , Wen-Chun Ge , Hao Yang ...
来源:[J].Journal of Asian Earth Sciences(IF 2.379), 2017, Vol.145, pp.475-493Elsevier
摘要:... These rocks can be divided into two broad rock groups based on whole-rock geochemical and Sr–Nd isotopic characteristics: (1) mid-ocean ridge basalt (MORB-type) tholeiites that range in composition from light rare earth element (LREE)-depleted varieties (N-MORB; (La/Sm) ...
作者:S. Khogenkumar , A. Krishnakanta Singh , R.K. Bikramaditya Singh ...
来源:[J].Journal of Asian Earth Sciences(IF 2.379), 2016, Vol.116, pp.42-58Elsevier
摘要:Abstract(#br)This paper presents the first report of the coexistence of tholeiitic mid-ocean ridge basalt (MORB) – type and alkaline ocean island basalt (OIB) – type mafic volcanics from the Manipur Ophiolite Complex (MOC), Indo-Myanmar Orogenic Belt, northeast India. The MORB...
作者:Hervé Guillou , Christophe Hémond , Brad S. Singer ...
来源:[J].Quaternary Geochronology(IF 4.015), 2017, Vol.37, pp.42-54Elsevier
摘要:... The GIMNAUT – MORB's test case amply demonstrates that the unspiked K-Ar technique, when applied to submerged volcanic samples, is subject to potentially defective assumptions of trapped atmospheric argon, excess/fractionated argon and extremely sensitive to alteration...
作者:Hervé Guillou , Christophe Hémond , Brad S. Singer ...
来源:[J].Quaternary Geochronology(IF 4.015), 2017, Vol.37, pp.42-54Elsevier
摘要:... The GIMNAUT – MORB's test case amply demonstrates that the unspiked K-Ar technique, when applied to submerged volcanic samples, is subject to potentially defective assumptions of trapped atmospheric argon, excess/fractionated argon and extremely sensitive to alteration...
作者:Hugh St.C. O'Neill , Andrew J. Berry , Guilherme Mallmann
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2018, Vol.504, pp.152-162Elsevier
摘要:... Suitable glasses are widely available from the basalts erupted at Mid-Ocean Ridges (MORB). Measurements of Fe 3+ /∑Fe, where ∑ Fe = Fe 2 + + Fe 3 + , by XANES spectroscopy of a globally representative sample of these MORB glasses are in good agreement with the most recen...
作者:Ming Tang , William F. McDonough , Richard D. Ash
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2017, Vol.197, pp.132-141Elsevier
摘要:... To test the hypothesis that the MORB source mantle balances the Eu and Sr deficits in the continental crust, we carried out high precision Eu/Eu ∗ and Sr/Sr ∗ measurement for 72 MORB glasses with MgO >8.5% from the Pacific, Indian, and Atlantic mid-ocean ridges. MORB...
作者:Ming Tang , William F. McDonough , Richard D. Ash
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2017, Vol.197, pp.132-141Elsevier
摘要:... To test the hypothesis that the MORB source mantle balances the Eu and Sr deficits in the continental crust, we carried out high precision Eu/Eu ∗ and Sr/Sr ∗ measurement for 72 MORB glasses with MgO >8.5% from the Pacific, Indian, and Atlantic mid-ocean ridges. MORB...
作者:Andrew J. Berry , Glen A. Stewart , Hugh St.C. O'Neill ...
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2018, Vol.483, pp.114-123Elsevier
摘要:Abstract(#br)The oxidation state of Fe, Fe / 3 + Σ Fe (where Σ Fe = Fe 2 + + Fe 3 + ), in glass samples of mid-ocean ridge basalt (MORB), from a wide range of localities, was determined by XANES spectroscopy to be 0.10(2) ( n = 42 ). This value ...
作者:Hongluo L. Zhang , Elizabeth Cottrell , Peat A. Solheid ...
来源:[J].Chemical Geology(IF 3.154), 2018, Vol.479, pp.166-175Elsevier
摘要:... Recalculation of Fe 3 + /ΣFe ratios for the mid-ocean ridge basalt (MORB) glasses analyzed previously by XANES by Cottrell and Kelley (2011) results in an average Fe 3 + /ΣFe ratio for MORB of 0.143 ± 0.008 (1σ), taking into account only analytical precision, and 0.14 ...

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