蘇魯超高壓變質帶為秦嶺－大別造山帶的東延部分，一般認為此超高壓帶是由於中朝與揚子兩大板塊於三疊紀時俯衝－碰撞到地函深度所形成的產物，是世界上規模最大的超高壓變質帶。本研究區域位於江蘇與山東省境內，針對膠州以南的超高壓變質帶岩體作一系列的探討，由東北向西南依序為膠州大窩洛、膠南瑯琊、江蘇贛榆石橋、東海縣城附近（許溝、駝峰、張庄水渠、青龍山、虎山、毛北）等剖面。

綜合礦物組合、微構造和礦物化學成份資料得到以下結果。膠州超糜嶺岩和膠南片麻岩曾受到強烈的應力作用，駝峰片麻岩中含有高鋁榍石，峰期變質至少在高壓相系以上。青龍山和白虎山的藍晶石石英岩中含有柯石英假晶，為超高壓變質的產物。贛榆縣石橋榴輝岩的峰期變質較東海縣出露的榴輝岩為低，尚未達到超高壓變質階段。

蘇－魯地區的榴輝岩可以歸納出以下五期變質作用：(I)綠簾角閃岩相，黑雲母、黝簾石等礦物分別被包裹在柯石英假晶和石榴子石中。(IIA)超高壓榴輝岩相(東海縣)，峰期變質，礦物組合為柯石英假晶＋石榴子石＋綠輝石±金紅石±綠簾石±多矽白雲母。(IIB)高壓榴輝岩相(贛榆縣)：峰期變質，礦物組合為石榴子石＋綠輝石±金紅石。(III)角閃岩相退變質作用：早期礦物被斜長石＋鈣質角閃石＋透輝石＋金雲母＋綠簾石＋鈦鐵礦置換。(IV)綠簾角閃岩相：鈉鈣質角閃石出現，如凍藍閃石。(V)綠片岩相：透閃石＋蛇紋石＋滑石出現。在這個階段中，溫壓降得更低，流體作用增加，綠輝石被蛇紋石置換，蛇紋石周圍被鎂鉻鐵礦取代。有別於Wang等(1993)和Zang等(1995)在蘇魯東北區威海和榮成的研究結果，南蘇魯在角閃岩相退變質之前，並沒有紀錄到一期過渡的粒變岩相。

The Su-Lu (Jiangsu-Shandong) ultrahigh-pressure (UHP) metamor- phic belt, eastern China, is an eastern extension of the Qinling-Dabie collision zone. Isotopic age data indicates that the UHP massif occurred in Triassic during Indo-China collision of Yangtze and Sino-Korean cratons. This study area is located in the Jiaocho、Jiaonan、Ganyu、Donghai area (including Shigo、Tuofong、Jangjuan、Jinglongshan、Hushan and Maobei) of the southern margin of Su-Lu UHP metamorphic belt.

According to the mineral assemblages、micro-tectonics and mineral chemistry, Su-Lu region have experienced a complex history, at least five stages of recrystallization were identified. The stage I is epidote-amphi- bole facies, very rare relict biotite and zoesite is included in coesite pseudomorphs or coarse grain garnet. The stage II ecologite facies is the peak metamorphism of which mineral assemblages are garnet + omphicite ± rutile ± epidote ± phengite. The conditions is 700-897℃, and 30kbar. The stage III is amphibole facies which assemblage contains plagioclase + calcium amphibole + diopsite + phlogopite +epidote + ilmenite. The coarse-grained omphcite and/or garnet of the stage II are rimmed by a radial kelyphitic assemblages of plagioclase、calcium amphibole、phlogopite, and diopside. The stage IV is epidote-　amphibole facies. Sodium calcium amphibole like barroisite was appearance. In the last stage V, it is retrograde metamorphism greenschist facies. The temperature and pressure further decreased and H2O activity increased. Diopsite was replaced by serpentine; sodium calcium amphibole was replaced by tremolite; some vein was replaced by talc.

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