Geochemical and Sr–Nd–Pb isotopic compositions of mafic dikes from the Jiaodong Peninsula, China: evidence for vein-plus-peridotite melting in the lithospheric mantle

Big insights from tiny peridotites: Evidence for persistence of Precambrian lithosphere beneath the eastern North China Craton

“…This is consistent with the proposed occurrence of lithospheric thinning in the southeastern NCC prior to the Late Triassic (Yang et al, 2010), while the Late Triassic (~220 Ma) eclogites and garnet clinopyroxenites remained within the interior of the eastern NCC during the Early Cretaceous (Xu et al, 2006). In addition, the numerous Early Cretaceous mantle-derived rocks (e.g., Fangcheng basalts, Zhang et al, 2002; Jiaodong mafic dykes, Yang et al, 2004;Feixian basalts/picrites, Gao et al, 2008; Laiwu-Zibo high Mg diorites, Xu et al, 2008) have crustal-like Sr-Nd isotopic signatures ( 87 Sr/ 86 Sr(t) = 0.705 to 0.711, and εNd(t) = −21 to − 4.0), indicative of incorporation of continental middle-lower crust in their mantle sources, and, thus, marking an ongoing process of lithospheric removal (Huang et al, 2007). By the Late Cretaceous, mantle-derived rocks (e.g., Jiaozhou alkali basalts, Yan et al, 2003 et al, 2008b) were primarily formed via melting of asthenospheric mantle similar to Cenozoic basalts in the eastern NCC (Lee et al, 2006;Peng et al, 1986).…”

Petrogenesis of Early Cretaceous Magmatism in Eastern China and the Gyeongsang Basin, Korean Peninsula

“…북중 국지괴 동측에 분포하는 백악기초기(약 144-100 Ma) 화성암은 피크라이트(picrite)-현무암-현무암질 안산암 및 황반암(lamprophyre)의 분출암 (Qiu et al, 2002;Yang et al, 2004;Guo et al, 2005Guo et al, , 2013Liu et al, 2006;Gao et al, 2008;Ma et al, 2014a, b)과 반려암-섬록암-몬조니암-섬장암-화강암 및 휘록암의 관 입암체 (Xu et al, , 2006Chen et al, , 2004Zhang et al, 2004Zhang et al, , 2005Zhang et al, , 2010Zhang et al, , 2012Wu et al, 2005;Yang et al, 2006Yang et al, , 2012aLiu et al, , 2009 Guo et al, 2004;Wang et al, 2005)과 반려암-섬록암-몬조니암-섬장암-화강암 및 휘록암의 관입암체 (Jahn et al, 1999;Yang et al, 2005a;Guo et al, 2006Guo et al, , 2014Huang et al, 2006Huang et al, , 2007Wang et al, 2007;Zhao et al, 2005Zhao et al, , 2007aLiu et al, 2008b;Tang et al, 2008b;Zhang et al, 2010Zhang et al, , 2012He et al, 2011He et al, , 2013)로 구성되어 있다. TAS도( (Fig.…”

“…The boundary line dividing the alkaline and subalkaline series is from Irvine and Baragar (1971). Data sources for eastern China from Charoy and Raimbault (1994), Martin et al (1994), Lapierre et al (1997), Swell and Campbell (1997), Li and McCulloch (1998), Jahn et al (1999), Chen et al (2001Chen et al ( , 2004Chen et al ( , 2008, Fan et al (2001Fan et al ( , 2004, Guo et al (2001Guo et al ( , 2004Guo et al ( , 2005Guo et al ( , 2006Guo et al ( , 2013Guo et al ( , 2014, Xu et al (2002Xu et al ( , 2006, Zhang et al ( , 2004Zhang et al ( , 2005Zhang et al ( , 2010Zhang et al ( , 2012, , Wang et al (2003Wang et al ( , 2004Wang et al ( , 2005Wang et al ( , 2007Wang et al ( , 2008, Shu et al (2004), Yang et al (2004Yang et al ( , 2005aYang et al ( , 2006Yang et al ( , 2012aYang et al ( , b, 2013, Zhao et al (2005Zhao et al ( , 2007a, Huang et al (2006Huang et al ( , 2007, Liu et al (2006Liu et al ( , 2008aLiu et al ( , b, 2009…”

“…FC=fractional crystallization; AFC=assimilation and fractional crystallization. (Chen et al, 2001;Fan et al, 2001Fan et al, , 2004Guo et al, 2001Guo et al, , 2004Guo et al, , 2013Qiu et al, 2002;Zhang et al, , 2004Zhang et al, , 2005Chen et al, , 2004Wang et al, 2003;Yang et al, 2004;Wang et al, 2005Wang et al, , 2008Yang et al, 2005aYang et al, , 2006Yang et al, , 2012aZhao et al, 2005Zhao et al, , 2007bLiu et al, 2006Liu et al, , 2008aLiu et al, , b, 2009Gao et al, 2008;Tang et al, 2008b;Guo et al, 2014;Ma et al, 2014a, b). 이는 위 암석들이 고-칼륨 칼크-알 칼리 내지는 쇼쇼나이트 계열에 속한다 (Fig.…”

“…이는 위 암석들이 고-칼륨 칼크-알 칼리 내지는 쇼쇼나이트 계열에 속한다 (Fig. 2) Sr isotopic ratios for Early Cretaceous basaltic rocks from eastern China (Lapierre et al, 1997;Li and McCulloch, 1998;Jahn et al, 1999;Chen et al, 2001Chen et al, , 2004Chen et al, , 2008Fan et al, 2001Fan et al, , 2004Guo et al, 2001Guo et al, , 2004Guo et al, , 2005Guo et al, , 2013Guo et al, , 2014Xu et al, 2002;Zhang et al, , 2004Zhang et al, , 2012Wang et al, 2003Wang et al, , 2004Wang et al, , 2005Wang et al, , 2008Yang et al, 2004Yang et al, , 2005aYang et al, , 2006Yang et al, , 2012aLiu et al, 2006Liu et al, , 2008aLiu et al, , b, 2009Yu et al, 2006;Huang et al, 2007;Zhao et al, 2007b;Gao et al, 2008;Xie et al, 2008;Tang et al, 2009;Ma et al, 2014a, b). Data source for basaltic rocks from the Hayang Group in the Gyeongsang basin from Kwon et al (2013).…”