Research Article

Geochronology and Geochemistry of the Karadaban Bimodal Volcanic Rocks in the Altyn Area, Xinjiang: Implications for the Tectonic Evolution of the Altyn Ocean

Table 3

Zircon Lu-Hf isotopic data for rhyolite (KB-26, KB-81) from the northern Altyn Tagh region.

Sample no. (Ma)176Yb/177Hf176Lu/177Hf176Hf/177Hf2σεHf(0)εHf(t) (Ma) (Ma)fLu/Hf

KB-26-15030.2514340.0036590.2827050.0000270.282670-2.47.5834995-0.89
KB-26-25080.1692380.0024330.2826070.0000260.282584-5.84.59491186-0.93
KB-26-35100.2179500.0030140.2827260.0000320.282697-1.68.6788930-0.91
KB-26-45020.2046490.0030010.2826440.0000320.282616-4.55.59091117-0.91
KB-26-55130.1697030.0023660.2826370.0000320.282614-4.85.79041115-0.93
KB-26-65030.1727360.0024280.2826910.0000310.282668-2.97.4825999-0.93
KB-26-75090.1738200.0024900.2826370.0000330.282613-4.85.69071119-0.92
KB-26-85010.2349710.0034560.2828590.0000340.2828273.113.0596642-0.90
KB-26-95140.2639810.0038880.2827800.0000350.2827430.310.3724824-0.88
KB-26-105190.1612160.0023650.2827240.0000340.282701-1.78.9776915-0.93
KB-26-115140.1937260.0029160.2827760.0000410.2827480.210.5710811-0.91
KB-26-125060.0652400.0009590.2826430.0000390.282634-4.66.38611074-0.97
KB-26-135170.2154090.0030170.2828370.0000380.2828082.312.7622675-0.91
KB-26-145120.2075930.0031690.2828190.0000390.2827891.711.9651722-0.90
KB-81-015010.1939270.0028140.2828290.0000430.2828032.012.1630697-0.92
KB-81-025100.1659030.0023920.2826320.0000300.282609-5.05.59121129-0.93
KB-81-035060.2866330.0041180.2828080.0000310.2827691.311.0687771-0.88
KB-81-045100.2411940.0035560.2828950.0000330.2828614.414.4543559-0.89
KB-81-055110.2815970.0040620.2829030.0000330.2828644.614.5538551-0.88
KB-81-065140.1717560.0025280.2827240.0000280.282699-1.78.8780922-0.92
KB-81-075110.3012160.0044330.2829120.0000350.2828705.014.7530538-0.87
KB-81-085060.1841410.0027880.2828740.0000320.2828473.613.8563593-0.92
KB-81-095100.2133360.0031950.2826750.0000330.282645-3.46.78671047-0.90
KB-81-105140.2241460.0033400.2827080.0000310.282676-2.37.9822975-0.90
KB-81-115030.2156730.0032510.2827010.0000350.282670-2.57.5830995-0.90
KB-81-135100.1922820.0028330.2827620.0000370.282735-0.49.9730844-0.91
KB-81-145110.1603520.0024190.2827660.0000280.282743-0.210.2716826-0.93
KB-81-155050.1676960.0024220.2827160.0000320.282693-2.08.3789942-0.93