中文摘要：

川西北地区绵竹汉旺青岩沟、观音崖以及安县雎水剖面三叠纪卡尼期马鞍塘组硅质海绵礁群生长于碳酸盐岩缓坡带，可划分为礁基、礁核、礁翼、礁问沉积等亚相，据内碎屑含量、化石埋葬学特征以及灰泥等基质比例厘定岩相和群落特征。礁灰岩主要为海绵格架岩和钙质微生物凝块岩，附礁生物类型包括有孔虫类、双壳类、棘皮类、介形类、腕足类、粗枝藻类、钙质海绵等。马鞍塘组海绵礁终结之后上覆黑色页岩沉积。晚三叠世卡尼期气候骤变在全球生物圈引发广泛的效应，海平面升降速率相对海绵礁的生长速率较大，加之构造活动频繁，大火山岩省集中爆发以及超级季风盛行，从而导致了硅质海绵礁灭绝。

英文摘要：

In the northwestern area of Sichuan such as Qingyanggou section and Guanyinya section in Hanwang and Jushui section in Anxian, the Ma＇ antang siliceous sponge reefs in the Upper Triassic Carnian, whose subfacies can be divided into reef base, reef core, reef flank and inter-reef deposits etc. , mainly appear in carbonate ramp slopes. And the lithofacies and community characteristics can be determined on the basis of the concentration of intraclasts, taphonomy characteristics and the ratio of marls in siliceous sponge reefs. Reef limestones usually include a sponge framework rock and calcareous microbialite clotted sory reef organisms mainly bivalves, echinoderms and limestone, and acces involves foraminifera, ostracodes, brachio bivalves, echinoderms and ostracodes, brachiopods, dasyeladales and calcareous sponge etc. After the extinction of siliceous sponge reefs in Ma＇antang, the overlying black shales were deposited. Carnian extreme climate events in Triassic have exerted an extensive influence on the global biosphere, which means that the global sea-level fluctuation rate in Upper Triassic Carnian that is higher than the growth rate of sponge reefs, coupled with the frequent plate tectonics during this period, the concentrated outbreak in fire rock provinces and prevalence of monsoon climate, led to the extinction of siliceous sponge reefs.