本文通过对三义黄土剖面孢粉资料的分析,初步重建了内蒙克旗地区16000 a以来植被及环境的变迁过程.约16 010～15 380 aBP,植被稀疏,气候寒冷而干燥;约15 380～11270 a B P,植被以草本植物为主,气候变得更加干旱;约11270～9 940 a B P,...本文通过对三义黄土剖面孢粉资料的分析,初步重建了内蒙克旗地区16000 a以来植被及环境的变迁过程.约16 010～15 380 aBP,植被稀疏,气候寒冷而干燥;约15 380～11270 a B P,植被以草本植物为主,气候变得更加干旱;约11270～9 940 a B P,气候总体上由先前的冷干开始向暖湿方向发展,植被仍以草原为主;约9 940～2 320 a B P,植被得到进一步发展,气候表现出温暖湿润的特征;约2 320 a B P至今,植被仍以草原为主,气候向温凉方向发展.展开更多
The paper presents results of palynological studies of the coal-bearing Carboniferous in Central Kazakhstan. A quantitative dynamics of major genera of miospores reflects an overall succession of the Carboniferous mio...The paper presents results of palynological studies of the coal-bearing Carboniferous in Central Kazakhstan. A quantitative dynamics of major genera of miospores reflects an overall succession of the Carboniferous miospore assemblages. Visean Serpukhovian assemblages are dominanted by Lophozonotriletes fuscatus, Acanthozonotriletes cristifer, A. inclusus, Punctatisporites glabratus, Crassispora ignorata, C. scrupea, Cyclobaculisporites trichacanthus, Lycospora breviapiculata, L. echinata and Vallatisporites decrescens. Rare Punctatisporites bertschoguriensis , Stenozonotriletes marginellus , Vallatisporites appilicatus , Verrucosisporites serobiculatus , Retieulatisporites caneellatus, Granulatisporites areuatus are recorded, which are not found in assemblages from overlying sediments. Bashkirian-Moseovian assemblages are dominated by Lyeospora subtriquetra, L. pusilla, Vallatisporites ciliaris, Apiculatisporis mollis, Cyelogranisporites testieulatus, Calamospora mierorugosa, Sehopfipollenites principalis, Psilohyrnena psiloptera, Florinites grandis and Granulatisporites piroformis miospores. Cristatisporites latispinus, Angulisporites didymus, Thymospora obseura and Torispora securis are also present, as well as single Apieulatisporis eurvispinus, Raistriekia inordinata, Marsupipollenites retroflexus, Entylissa eaperata, Potonieisporites grandis and Cordaitina sp. A similar succession of miospore assemblages is recorded in the Carboniferous deposits of Europe and North America, which allows carrying out correlations, despite an endemic characters of many species of Paleozoic miospores from the coal-bearing Carboniferous of the Kazakhstan Province in the Euramerian Paleofloristic Region.展开更多
Based on the anatomical study of leaf cuticles of Cordaites from the Lower Permian Shanxi Formation in Baode of Shanxi, the author analysed the epidermal characters of Cordaites in this area. On the base of the abunda...Based on the anatomical study of leaf cuticles of Cordaites from the Lower Permian Shanxi Formation in Baode of Shanxi, the author analysed the epidermal characters of Cordaites in this area. On the base of the abundant compressions and laboratory studies, the author complemented some new data of the cuticular characters of the speeies Cordaites baodeensis Sun for its study of taxonomy. Meanwhile, the author newly discovered a number of sporopollen fossils associated with the mega-plants of Cordctitales, described 9 species of 6 genera. The palynological data can provide a supplement evidence for defining the age of C. baodeensis and its associated plants to be Early Permian.展开更多
Based on the analysis of the pollen samples from the Xiachuan site, the present paper makes a preliminary reconstruction of the palaeoclimatic and palaeoecological environments at the site.The climate-zone features of...Based on the analysis of the pollen samples from the Xiachuan site, the present paper makes a preliminary reconstruction of the palaeoclimatic and palaeoecological environments at the site.The climate-zone features of the Xiachuan pollen suggest that the site underwent six climatic changesfrom 36,000 to 12,000 BP. In this temporal scope, the early phase of the main Xiachuan cultural remains, lasting from 23,000 to 13,000 BP, corresponded just to the flourishing stage of the last glaciation, when the growth of trees at Xiachuan must have been concerned with the existence of mountain basins in this area; from 13,000 to 12, 000 aBP, i.e. in the period of the late Xiachuan cultural remainscorresponding to the Fen zhuang interstadial, there was the rise of the summer monsoon and a little going up of the temperature.展开更多
文摘本文通过对三义黄土剖面孢粉资料的分析,初步重建了内蒙克旗地区16000 a以来植被及环境的变迁过程.约16 010～15 380 aBP,植被稀疏,气候寒冷而干燥;约15 380～11270 a B P,植被以草本植物为主,气候变得更加干旱;约11270～9 940 a B P,气候总体上由先前的冷干开始向暖湿方向发展,植被仍以草原为主;约9 940～2 320 a B P,植被得到进一步发展,气候表现出温暖湿润的特征;约2 320 a B P至今,植被仍以草原为主,气候向温凉方向发展.
文摘The paper presents results of palynological studies of the coal-bearing Carboniferous in Central Kazakhstan. A quantitative dynamics of major genera of miospores reflects an overall succession of the Carboniferous miospore assemblages. Visean Serpukhovian assemblages are dominanted by Lophozonotriletes fuscatus, Acanthozonotriletes cristifer, A. inclusus, Punctatisporites glabratus, Crassispora ignorata, C. scrupea, Cyclobaculisporites trichacanthus, Lycospora breviapiculata, L. echinata and Vallatisporites decrescens. Rare Punctatisporites bertschoguriensis , Stenozonotriletes marginellus , Vallatisporites appilicatus , Verrucosisporites serobiculatus , Retieulatisporites caneellatus, Granulatisporites areuatus are recorded, which are not found in assemblages from overlying sediments. Bashkirian-Moseovian assemblages are dominated by Lyeospora subtriquetra, L. pusilla, Vallatisporites ciliaris, Apiculatisporis mollis, Cyelogranisporites testieulatus, Calamospora mierorugosa, Sehopfipollenites principalis, Psilohyrnena psiloptera, Florinites grandis and Granulatisporites piroformis miospores. Cristatisporites latispinus, Angulisporites didymus, Thymospora obseura and Torispora securis are also present, as well as single Apieulatisporis eurvispinus, Raistriekia inordinata, Marsupipollenites retroflexus, Entylissa eaperata, Potonieisporites grandis and Cordaitina sp. A similar succession of miospore assemblages is recorded in the Carboniferous deposits of Europe and North America, which allows carrying out correlations, despite an endemic characters of many species of Paleozoic miospores from the coal-bearing Carboniferous of the Kazakhstan Province in the Euramerian Paleofloristic Region.
基金Supported by Project"111"in Jilin University, China (No.B06008)
文摘Based on the anatomical study of leaf cuticles of Cordaites from the Lower Permian Shanxi Formation in Baode of Shanxi, the author analysed the epidermal characters of Cordaites in this area. On the base of the abundant compressions and laboratory studies, the author complemented some new data of the cuticular characters of the speeies Cordaites baodeensis Sun for its study of taxonomy. Meanwhile, the author newly discovered a number of sporopollen fossils associated with the mega-plants of Cordctitales, described 9 species of 6 genera. The palynological data can provide a supplement evidence for defining the age of C. baodeensis and its associated plants to be Early Permian.
文摘Based on the analysis of the pollen samples from the Xiachuan site, the present paper makes a preliminary reconstruction of the palaeoclimatic and palaeoecological environments at the site.The climate-zone features of the Xiachuan pollen suggest that the site underwent six climatic changesfrom 36,000 to 12,000 BP. In this temporal scope, the early phase of the main Xiachuan cultural remains, lasting from 23,000 to 13,000 BP, corresponded just to the flourishing stage of the last glaciation, when the growth of trees at Xiachuan must have been concerned with the existence of mountain basins in this area; from 13,000 to 12, 000 aBP, i.e. in the period of the late Xiachuan cultural remainscorresponding to the Fen zhuang interstadial, there was the rise of the summer monsoon and a little going up of the temperature.
