1.The benthic assemblage coo-positions of brachiopod communities in the early Early Carboniferous were between BA1 and BA2, and there were no BA3-BA5 deep-water communities in this area, which indicated that the sea water depth in this period was commonly less than 10 m.
本区早石炭世早期腕足动物群落的生态位介于BA1和BA2之间，缺乏BA3至BA5较深水群落(BA-Benthic Assemblage，底栖组合)，说明该区早石炭世早期海水深度一般不超过10 m。
2.In the light of tectonic evolution stage and metallogenesis, these metallogenic system (assemblage) could be classified as follows: (1) The pre-divergent metallogenic system in the southwest margin of North China Paleocontinent in the Archean-Meso Proterozoic:Dongdashan iron,Jinchuan Nickel-copper. (2) The divergent metallogenic system in the northern margin of the Qaidam paleoplate in the Middle-Late Proterozoic:Huashugou-Liugouxia iron.(3) The metallogenic system in the active margin in the early Paleozoic:the metallogenic assemblage in the island arc-rift in the early stage(Baiyinchang-Qingshuigou copper-polymetallic);the metallogenic assemblage in island arc in the Middle-Late stage (Honggou-Jiaolongzhang copper-polymetallic);the back-arc extensional basin (Zhuzhuiyaba-Jiugequan-Shijuli copper);the metallogenic assemblage in connection with subduction and magmatic-hydatogenesis (Taergou-XiaoLiugou wolfram; Huashugou-liugouxia copper;Dadonggou-Diaodaban lead-zinc);The metallogenic assemblage is related to the oceanic crustal shards (Dadaoerji chromite;Yushigou chromite). (4) The metallogenic system has something to do with collision-type orogeny:the metallogenic assemblage in foreland basin(Tianlu copper);the metallogenic assemblage with the intracontinental orogeny and ductile shear(Hanshan-Yingzhuishan gold).
根据构造发展阶段和成矿作用特点，确定本区成矿系统及组合如下：(1)华北板块西南边缘太古宙?中元古代裂解期前成矿系统：东大山铁成矿组合，金川镍铜成矿组合；(2)柴达木板块北缘中、新元古代裂解成矿系统：桦树沟?柳沟峡铁成矿组合；(3)加里东期活动大陆边缘成矿系统：早期岛弧裂谷成矿组合(白银厂?清水沟铜及多金属成矿组合)，中、晚期岛弧成矿组合(红沟?蛟龙掌铜及多金属成矿组合)，弧后扩张盆地成矿组合(猪咀哑巴?九个泉?石居里铜及多金属成矿组合)，与俯冲作用有关的岩浆热液成矿组合(塔尔沟?小柳沟钨成矿组合，桦树沟?柳沟峡铜成矿组合，大东沟?吊大坂铅锌成矿组合)，洋壳残片成矿组合(大道尔吉铬成矿组合，玉石沟铬成矿组合)；(4)碰撞造山成矿系统：前陆盆地成矿组合(天鹿铜成矿组合)，陆内造山韧性剪切成矿组合(寒山?鹰咀山金成矿组合)。
3.Four conodont assemblages and two conodont zones of the Middle—Upper Ordovician have been established. In ascending order,they are:Serratognathus diversus—Bergstroemognathus extensus assemblage,Protopanderodus calceatus—Periodon aculeatus assem- blage,Tasmanognathus sp.—Aphelognathus sp.assemblage,Belodina confluens—Phragmodus unda- tus assemblage,Yaoxianognathus neimengguensis zone and Aphelognathus pyramidalis zone. Thereinto, S.diversus—B,extensus assemblage is assigned to the Upper Daobaowanian Stage of the Lower Ordovi- cian.
自下而上依次为: Serratognathus diversus—Bergstroemognathus extensus组合,Protopanderodus calceatus—Periodon aculeatus组合,Aphelognathus sp．—Tasmanognathus sp．组合,Belodina confluens—Phragmodus undatus组合,Yaoxianog- nathus neimengguensis带和Aphelognathus pyramidalis带。
4.According to the plant fossil assemblage,the delimitation between Middle Devonian and Upper Devonian in the Yangtze Gorges area should locate beneath the oolitic hematite and between the bed of the Yuntaiguan Formation bearing Protolepidodendron scharyanum Barrandeina dusliana assemblage and the bed of Huangjiadeng Formation bearing Leptophloeum rhombicum Cyclostigma kiltorkense Archaeopteris assemblage
根据植物化石垂直分布特征 ,长江三峡地区中、上泥盆统的界线应划在Protolepido dendronscharyanum Barrandeinadusliana组合与Leptophloeumrhombicum Cyclostigmakiltorkense Archaeopteris组合之间。
5.In the east and south parts of the basin (north from Mt. Kunlun and west from Mt. Qilian), because of the influence of fresh water river coming from melted snow-mountain water, the assemblage was the fresh-brackish water ostracoda which had high species diversity, furthermore, it was the Qinghaicypris cras- sa assemblage in Q_(1+2) and the Candona neglecta-Candoniella lactea assemblage in Q_(3+4) sepa- rarely.
淡一半咸水介形类Q_(1+2)的强壮青星介Qinghaicypris crassa组合和Q_(3+4)的疏忽玻璃介-乳白小玻璃介Candona neglecta-Candoniella lactea组合分布在盆地东、南部,即昆仑山北麓和祁连山西麓地区,该区明显受雪山融水形成的河流淡水补给的影响,主要为淡-半咸水区。
6.This study shows that the small foraminiferal fauna in the Taiyuan Formation of the Xinwen coalfield in Shandong Province, contains 66 species in 24 genera of foraminifera. According to the distribution and vertical varia- tion of foraminifera fossils in the strata , the foraminiferal sequence can be divided in ascending order into 3 assemblages: 1. Bradyina samarica-Palaeotextularia angusta elongata Assemblage, 2.Nodosaria sinensis-Tetrataxis Assemblage, 3.Geinitzina postacarbonica Assemblage.
通过对山东新汶煤田太原组小有孔虫动物群的系统研究,共鉴定出小有孔虫化石 24 属 66 种,根据小有孔虫在太原组中的垂向分布和含量的变化,自下而上分为 3 个小有孔虫组合:1. Bradyina samarica Palaeotextu laria angusta elongata 组合,2. Nodosaria sinensis Tetrataxis 组合,3. Geinitzina postacarbonica 组合。
7.The present flora can be divided into three plant assemblages in ascending order as follows:Lepidodendron szeianum Neurop teris ovata Assemblage,Lobatannularia sinensis-Taeniopteris mucronata Assemblage and Emplectopteris triangularis Plagiozamites oblonifolius Assembage. The ages of the three plant assemblages are equivalent to the Late Carboniferous,the early stage of the Early Permian and the late stage of the larly Permian,respectively.
当前植物群可划分为三个植物组合,即晚石炭世斯氏鳞木—卵脉羊齿 Lepidodendron szeianum—Neuropteris ovata 组合、早二叠世早期中国瓣轮叶—尖头带羊齿 Lobatannularia sinensis—Taeniopteris mucronata 组合和早二叠世晚期三角织羊齿—椭圆斜羽叶 Emplectopteris triangularis—Plagiozamites oblongifolius 组合。
8.They can be grouped into two assemblages in ascending order as follows:1. Cryptobairdia xiaodonggougensis-Lobobairdia ventriconcava-Rectobairdia Assemblage (L_1—L_5)2. Orthobairdia chasae—Amphissites—Discoidella Assemblage (L_6—L_9)The two assemblages are quite different in morphological features and ecological habits.
下组合为Cryptobairdia xiaodonggouensis-Lobobairdiaventiconcava—Rectobairdia(L_1-L_5); 上组合为Orthobairdia chasae-Amphissites-Discoidella(L_6-L_9)。
9.Through an analysis of the changes in contents of typical general and species and dominant components, two sporopollen assemblages may be distinguished in ascending order as follows: the Osmundacidites - Protopinus - Cycadopites assemblage and the Cyathidites - Piceaepollenites - Cycadopites assemblage.
通过对纵向上典型属种及优势组分含量变化规律的分析可划分为两个孢粉组合Osmundacidites-Protopinus-Cycadopites组合和Cyathidites-Piceaepollenites-Cycadopites组合,它们分别产自八道湾组和三工河组。
10.According to the distribution of Brachiopoda in the Changxing Formation in ZhongLiangShan, Chongqing, the present paper has established the Spinomarginifera chengyoayenensis - Qinglongia acutangulum assemblage in the lower and the Perigeyerella costellata - Enteletina Transversa assemblage in the upper, and has discussed their features.
本文根据重庆中梁山长兴组中腕足动物的分布规律,建立了下部的Spinomarginifera chengyoayenensis-Qinglongia acutangulum组合和上部的Perigeyerella costellata-Enteletina transversa组合,阐述了各组合的面貌和特征。
