Mesozoic crustal thickening of the eastern North China craton: Evidence from eclogite xenoliths and petrologic implications

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

“…Density foundering/delamination may have occurred more rapidly and extensively in regions close to the collisional boundaries, where a higher degree of lithospheric thickening had occurred. 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).…”

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

“…이를 유발한 원동력에 관한 모델 역시 다양하다. 요약하면 맨틀 플룸(plume) (Wilde et al, 2003;Deng et al, 2005), 인도판과 유라시아판의 충돌 (Menzies et al, 1993), 북중국지괴와 남중국지 괴의 충돌 (Menzies and Xu, 1998;Gao et al, 2002;Xu et al, 2006) 및 태평양판의 섭입 (Griffin et al, 1998;Xu, 2001Xu, , 2014Wu et al, 2005;Sun et al, 2007;Zhang et al, 2009;Xu et al, 2013) 등으로 정리할 수 있다. 북중국지괴 동측에 분 포하는 광범위한 백악기초기 화성활동은 이러한 암석 권맨틀의 변화과정과 연계되어 있는 것으로 추정된다 Chen et al, 2004;Wu et al, 2005).…”

“…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.…”

“…Data sources from Charoy and Raimbault (1994), Lapierre et al (1997), Swell and Campbell (1997), Li and McCulloch (1998), Jahn et al (1999), Chen 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 ( , 2013Guo et al ( , 2014, Xu et al (2002Xu et al ( , 2006, Zhang et al ( , 2012, , Wang et al (2003Wang et al ( , 2004Wang et al ( , 2005 Sr (a) and εNd(t) (b) for Early Cretaceous igneous rocks from eastern China. Data sources and symbols as in 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…”