中文摘要：

冶山和山里陈岩体构造上属于扬子地块东部,毗邻郯庐断裂带东侧,主要岩石类型为石英闪长玢岩。它们的单矿物（角闪石,黑云母）40Ar/39Ar坪年龄分别为131.22±0.77 Ma和130.07±0.48 Ma。冶山和山里陈岩体具有与埃达克岩类似的地球化学特征,如w（SiO2）〉56%,高Al2O3[w（Al2O3）=14.95%～17.67%]、Sr[w（Sr）=495×10-6～2086×10-6]、Sr/Y（44～159）和La/Yb（26～68）,低重稀土元素,如w（Yb）=0.82×10-6～1.56×10-6）,w（Y）=9.14×10-6～20.32×10-6,无明显-正Eu异常（δEu=0.90～1.11）。另外,样品普遍具有较高的MgO[w（MgO）=2.01%～4.98%]、IMg（45～71）和Cr[w（Cr）=19.2×10-6～199×10-6]、Ni[w（Ni）=13.8×10-6～58.8×10-6]。它们的Sr-Nd-Pb同位素特征为：（87 Sr/86 Sr）i=0.7059～0.7062,εNd（t）=-14.75～-12.15,（206 Pb/204 Pb）t=16.082～16.847,（207 Pb/204 Pb）t=15.303～15.461,（208Pb/204Pb）t=35.889～36.919。冶山和山里陈埃达克质侵入岩可能是由于扬子与华北地块在三叠纪的碰撞及扬子地块东部的地壳拆离作用,导致下地壳增厚并发生拆沉熔融,岩浆在上升过程中与地幔橄榄岩发生了反应。郯庐断裂带两侧早白垩世时期的埃达克（质）岩可能形成于断裂带早白垩世时期由左行平移向伸展活动转变的阶段,其源动力很可能是受到滨太平洋板块构造的影响。

英文摘要：

The Yeshan and Shanlichen plutons are tectonically located in the Eastern Yangtze Block and to the east of the Tan-Lu Fault Belt（TLFB）.The Yeshan and Shanlichen intrusive rocks mainly consist of quartz diorite porphyries.They have hornblende and biotite with 40Ar/39Ar plateau ages of 131.22 ± 0.77 Ma and 130.07 ± 0.48 Ma,respectively.These intrusive rocks are geochemically similar to adakites,e.g.,w（SiO2） 56%,high Al2O3 [w（Al2O3） = 14.95%~17.67%],Sr [w（Sr） = 495×10-6~2086×10-6],Sr/Y = 44~159,and La/Yb= 26~68,but low heavy rare earth element contents,e.g.,w（Yb） = 0.82×10-6~1.56×10-6 and w（Y） = 9.14×10-6~20.32×10-6,with negligible to positive Eu anomalies（δEu = 0.90~1.11）.Moreover,most samples have relatively high MgO [w（MgO） = 2.01%~4.98%],IMg（45~71）,Cr [w（Cr） = 19.2×10-6~199×10-6] and Ni [w（Ni） = 13.8×10-6~58.8×10-6] values.They also exhibit the similar Sr-Nd-Pb isotope compositions,（87Sr/86Sr）i = 0.7059 ~ 0.7062,εNd（t） =-14.75~-12.15,（206Pb/204Pb）t = 16.082~16.847,（207Pb/204Pb）t = 15.303~15.461,and（208Pb/204Pb）t = 35.889~36.919.The Yeshan and Shanlichen adakitic magmas were most likely generated by partial melting of delaminated lower crust and subsequently interacted with mantle peridotites at different percentage during their ascent.The crust may be thickened by the collision orogenic processes between the Yangtze Block and the Northern China Block in Triassic and later crustal detachment of the Eastern Yangtze Block.Chronological data indicate that the Cretaceous adakitic magmatism occurring along both sides of the TLFB may be closely related to the transitions from left-lateral strike-slip to extensional movement of the TLFB due to the subduction of Paleo-Pacific Plate.