民和盆地早白晋世晚期的孢粉组合

民和盆地的甘肃兰州柴家台地区,下白垩统河口组上亚组含有丰富的孢粉化石。上亚组上部是以Ｓｃｈｉｚａｅｏｉｓｐｏｒｉｔｅｓ－Ｃｉｃａｔｒｉｃｏｓｉｓ ｐｏｒｉｔｅｓ为代表的粉组合,并可划分出上下两个亚组合,分别以Ｃｌａｓｓｏｐｏｌｌｉｓ－Ｓｃｈｉｚａｅｏｉｓｐｏｒｉｔｅｓ和Ｐｉｃｅａｐｏｌｌｅｎｉｔｅｓ－Ｃｉｃａｔｒｉｃｏｓｉｓｐｏｒｉｔｅｓ来表示。     

甘肃玉门旱峡早白垩世孢粉组合

本文研究了甘肃玉门旱峡沟口剖面下沟组,中沟组的孢粉化石,共鉴定孢粉３７属５３种;藻类化石２属２种。根据上孢粉化石建立了Ｃｉｃａｔｒｉｃｏｓｉｓｐｏｒｉｔｅｓ－Ｓｃｈｉｚａｅｏｉｓｐｏｒｉｔｅｓ－Ｃｌａｓｓｏｐｏｌｌｉｓ－Ｊｉａｏｈｅｐｏｌｌｉｓ组合,包括下亚组合,包括下晋组合（下沟组）和上亚组合（中沟组）。鉴定组合地质时代为Ｈａｕｔｅｒｉｖ－ｉａｎ－Ｂａｒｒｅｍｉａｎ。推测气候属于温暖湿润的亚热带     

塔里木盆地北部早白垩世孢粉组合

根据建组部面和４个钻井剖面舒善河组孢粉化石的研究,建立５个孢粉组合,自老而新为Ｃｌａｓｓｏｐｏｌｌｉｓ－Ｓｃｈｉｚａｅｏｉｓｐｏｒｉｔｅｓ组合,Ｃｌａｓｓｏｐｏｌｌｉｓ高含量组合,Ｃｌａｓｓｏｐｏｌｌｉｓ－Ｄｉｃｈｅｉｒｏｐｏｌｌｉｓ组合,Ｃｌａｓｓｏｐｏｌｌｉｓ－Ｄｉｃｈｅｉｒｏｐｏｌｌｉｓ－Ｌｙｇｏｄｉｕｍ－ｓｐｏｒｉｔｅｓ组合和Ｄｉｃｈｅｉｒｏｐｏｌｌｉｓ高含量组合。根据舒善河组的时代为早白     

鹤冈盆地石头河子组孢子花粉

本文是对鹤冈盆地中生代主要含煤地层石头河子组孢粉化石的首次报道与研究,共记述孢子花粉２６属４６种,经描述１２属２０种。文中从所发现的海金沙科孢子Ｃｉｃａｔｒｉｃｏｓｉｓｐｏｒｉｔｅｓ１１种,Ｃｏｎ－ｃａｖｉｓｓｉｍｉｓｐｏｒｉｔｅｓ１种,Ｐｉｌｏｓｉｓｐｏｒｉｔｅｓ１种,凤尾蕨科孢子Ｐｔｅｒｉｓｉｓｐｏｒｉｔｅｓ１种,石松科孢子Ｌｙｃｏｐｏｄｉ－ｕｍｓｐｏｒｉｔｅｓ１种,蚌壳蕨科孢子Ｃｉｂｏｔｉｕｍｓｐｏｒａ１种,桫椤科孢子Ｃｙａｔｈｉｄｉｔｅｓ２种以及相当数量的松柏目双囊花粉,植物亲缘关系不明的特征性花粉Ｊｉａｏｈｅｐｏｌｌｉｓ１种等,论证了石头河子组地质时代应属早白垩世晚贝里阿斯期－巴列姆期。石头河子组地质时代长期被归为侏罗纪,这一孢粉组合的研究,无疑对正确确定这一含煤地层的时代有着较重要的意义。     

宁夏中卫晚石炭世维斯发期孢粉组合

研究了宁夏中卫下河沿上石炭统羊虎沟组孢子花粉化石５５ 属９８ 种,建立了两个孢粉组合带,即Ｌａｅｖｉｇａｔｏｓｐｏｒｉｔｅｓ ｍ ｅｄｉｕｓ－Ｃｙｃｌｏｇｒａｎｉｓｐｏｒｉｔｅｓ ａｕｒｅｕｓ （ＭＡ）带和Ｔｏｒｉｓｐｏｒａ ｓｅｃｕｒｉｓ－Ｐｕｎｃ－ｔａｔｉｓｐｏｒｉｔｅｓｈｉａｎｓ（ＳＨ）带,其地质时代分别相当于维斯发Ａ－Ｂ期和维斯发Ｃ－Ｄ期．根据孢粉植物群特征,结合古地磁证据,认为中卫维斯发期为温暖潮湿的热带－亚热带气候     

宁夏六盘山盆地晚三叠世孢粉组合及其地层意义

对宁夏六盘山盆地炭山、窑山及上流水等３条剖面中原划为中侏罗统延安组下部含煤地层的２１块岩样进行了孢粉分析,获得丰富的孢粉化石,鉴定出７６属１４４种,建立了Ｄｉｃｔｙｏｐｈｙｌｌｉｄｉｔｅｓ－Ａｒａｔｒｉｓｐｏｒｉｔｅｓ－Ｃｙｃａｄｏｐｉｔｅｓ组合。通过与国内外相关孢粉组合对比,认为该组合地质时代应属晚三叠世。首次以孢粉化石为依据,确认了六盘山盆地上三叠统延长组的存在。     

新疆吐鲁番─哈密盆地晚三叠世黄山街组、郝家沟组孢粉植物群及其意义

本文对新疆吐鲁番－哈密盆地３口石油探井中黄山街组、郝家沟组共１０８块样品进行了孢粉分析研究。自下而上建立了晚三叠世两个孢粉组合,即Ａｒａｔｒｉｓｐｏｒｉｔｅｓ－Ａｌｉｓｐｏｒｉｔｅｓ组合和Ｏｓ－ｍｕｎｄａｃｉｄｉｔｅｓ－Ｃｈｏｒｄａｓｐｏｒｉｔｅｓ组合,讨论了组合特征及其时代,并与国内外有关层位及化石群进行了分析比较;探讨了孢粉植物群所反映的古植被和古气候。     

新疆吐鲁番—哈密盆地晚三叠世黄山街组,郝家沟组孢粉植物群及其意义

本文对新疆吐鲁番－哈密盆地３口石油探井中黄山街组,郝家沟组共１０８块样品进行了孢粉分析研究。自下而上建立了晚三叠世两个孢粉组合,即Ａｒａｔｒｉｓｐｏｒｉｔｅｓ－Ａｌｉｓｐｏｒｉｔｅｓ组合和Ｏｓｍｕｎｄａｃｉｄｉｔｅｓ－Ｃｈｏｒｄａｓｐｏｒｉｔｅｓ组合,讨论了组合特征及其时代,并与国内外有关层位及化石群进行了分析比较;探讨了孢粉植物群所反映的古植被和古气候。     

海南岛东部近海新第三纪孢粉植物群

根据ＢＤ２３－１－１井与孢子花粉共生的海相浮游有孔虫和钙质超微化石,论述了中国海南岛东部近海新第三纪各个时期的孢粉植物群特征。建立了４个孢粉组合,它们是：１．Ｑｕｅｒｃｏｉｄｉｔｅｓ－Ｃｕｐｕｌｉｆｅｒｏｉｐｏｌｅｎｉｔｅｓ－Ｆｌｏｒｓｈｕｅｔｚｉａ－Ｄｉｃｏｌｐｏｐｏｌｉｓ组合（早中新世晚期）;２．Ｄｉｃｏｌｐｏｐｏｌｉｓ－Ｅｘｔｒａ－ｐｕｎｃｔａｔｏｓｐｏｒｉｔｅｓ－Ｔａｘｏｄｉａｃｅａｅｐｏｌｅｎｉｔｅｓ组合（中中新世早期）;３．Ａｂｉｅｔｉｎｅａｅｐｏｌｅｎｉｔｅｓ－Ｐｏｌｙｐｏｄｉ－ａｃｅａｅｓｐｏｒｉｔｅｓ－Ｌｉｑｕｉｄａｍｂａｒｐｏｌｅｎｉｔｅｓ组合（中中新世晚期至晚中新世）;４．Ａｂｉｅｔｉｎｅａｅｐｏｌｅｎｉｔｅｓ－Ｐｅｒｓｉｃａｒｉｏｉｐｏｌｉｓ组合（晚中新世晚期至早上新世）。孢粉植物群反映了海南岛东部近海新第三纪的气候基本上一直比较温暖湿润,并且逐渐降温的历程。     

广西横县陶圩凹陷白垩系孢粉组合

根据从广西横县陶圩凹陷ＺＫ１０１,ＺＫ３０１和ＺＫ００３钻孔的样品得到较丰富的化石孢粉组合（Ｓｃｈｉｚａｅｏｉｓｐｏｒｉｔｅｓ－Ｃｒａｎｗｅｌｌｉａ）,确定其地质时代为晚白垩世早期。本文所论述的孢粉组合在陶圩凹陷是首次报道的古生物化石,这不仅为确定该凹陷白垩纪地层的地质时代提供了可靠的化石证据,同时对盆地内各小规模凹陷进行地层对比亦是很有意义的。     

Sporo-Pollen Assemblages from Late Phase of Early Cretaceous in Minhe Basin

Plenty of sporo-pollen fossils were found from the Upper Subformation of Hekou Formation at Chaijiatai, Lanzhou of Gansu, Minhe Basin. The sporo-pollen assemblage of the upper stratum of the Upper Suhformation was named as Schizaeoisporites-Cicatricosisporites. It could be further divided into two subassemblages. The upper one was Classopollis-Schiza- eoisporites, and the lower one was Piceapollenites-Cicatricosisporites. By analysing the periods of the important species and genera in the assemblage and comparing with the known assemblages in various districts, the author cosidered that the geologic age of the assemblage was the late phase of Early Cretaceous (Aptian-Alhian). The age of the second subassemblage was later which was Albian. So far, the stratum where the sporo-pollen fossils assemblage were found was the uppermost one of the Lower Cretaceous that have been found in Minhe Basin.     

Early Cretaceous Palynofloras from Tarim Basin,Xinjiang

One hundred and eight species of fossil spores and pollen referred to 55 genera found from the Lower Cretaceous Kapushaliang (Kizilsu) Group in the Tarim Basin of Xinjiang have been studied in this paper. The Kapushaliang Group may be divided into the Yageliemu Formation, the Shushanhe Formation and Baxigai Formation in ascending order. The Yageliemu palynoflora is characterized by the predominance of gymnospermous pollen, the relative abundance of pteridophytic spores and the absence of angiospermous pollen. Coniferae is dominant, while Lygodiaceae and Schizaeaceae are important in the flora. The most common species of palynomorphs are Todisporites minor, Cicatricosisporites dorogensis, C. australiensis, Lygodiumsporites subsimplex, Schizaeoisporites cretacius, S. zizyphinus, S. certus. Cibotiumspora paradoxa, Cyathidites australis, C. minor, Biretisporites potoniael, Cycadopites minimus, Pseudowalchia hiangulina, Parvisaccites radiatus, Podocarpidites multesimus, P. canadensis, Alisporites bilateralis, Cedripites cretaceus, C. canadenris, Abietineaepollenites microalatus, Clarsopollis classoides, C annulatus, C. xinjiangensis (sp. nov.), Ephedripites multicostatus, E. tarimensis (sp. nov.), etc . The palynoflora is comparable with those of the lower part of the Lower Xinminbu Formation in northwestern China and the lower part of the Lower Mannville Formation in western Canada, which is considered corresponding from Berriasian to Valanginian in age. The Shushanhe palynoflora is also characterized by dominance of gymnosperms and subdominance of pteridophyta. Some primitive angiospermons pollen grains are found in the upper part of the formation. In addition to the most common species of the above mentioned palynoflora, the important species in the present palynoflora comprise Cicatricosisporites potomacensis, C. orbiculatus, C. subrotundus, Concavissimisporites punctatus, C. verrucosus, C. globosus, lmpardecispora apiverrucata, Trilobosporites crassus, T. trioreticulosus, Pilosisporites verus, P. trichopapillosus, Klukisporites pseudoreticulatus, Verrucosisporites obscurilaesuratur, Converrucosisporites saskatchewanensis, Foraminisporis wonthaggiensis, Cingulatisporites valdensis, C. ruginosus, Jiaohepollis verus, Pityosporites constrictus, etc. More than 40 in dicative species of Early Cretaceous occur in the assemblage. The palynoflora compares clcsely with those of the middle part of the Lower Xinminbu Formation and the Quartz Sand Member of the Lower Mannville Formatton. It is suggested that the Shushanhe Formation should belong to Hauterivian of Barremian in age. The Baxigai palynoflora is basically similar to the Shushanhe palynoflora. But the palynoflora shows an obvious increase in abundance of lygodiaceous spores and angiospermous pollen accompanied by a great reduction of Classopollis and Ephedripltes. Most of the Early Cretaceous species occurring in the above mentioned palynofloras are present. In addition, some Cretaceous species recorded from Aptian and Albian Stages in Europe, North America and Australia, such as Trilobosporites tribotrys, T. trioreticulosus, Coptospora paradoxa, Camarozonosporites insignis, Crybelosporites punctatus, etc., appear in the assemblage. In comparison with the microfloras of the upper part of the Lower Xinminbu Formation, the Upper Mannville Formation and the lower part of the Lower Colorado Group, the Baxigai Forma- tion should be referred to Aptian to Albian in age. Judging from the palynofloras, the early Cretaceous palaeoclimate in the basin should belong to the arid or semi-arid type of the subtropic zone. However, from Barremtan through Albian the climatic conditions might appear relatively wet.     

Parahorologinella gen.nov.--松辽盆地早白垩世孢形体一新属

Parahorologinella gen．nov．是一类多细胞、单层的定形群体化石,亲缘上可能与绿藻植物门有关。属下仅一种：P．ciconica gen．etsp．nov．,产于松辽盆地东南部登楼库组第三段。据同层孢粉化石的研究,时代为早白垩世阿尔必期,代表微咸一淡水的沉积环境。     

内蒙古开鲁盆地早白垩世阜新组孢粉组合

开鲁盆地陆家堡坳陷白垩系十分发育,富含各门类生物化石。根据坳陷内钻井所采样品,系统研究了早白垩世阜新组孢粉化石,建立以Cicatricosisporites Laevigatosporites Tricolpopollenites 为代表的孢粉组合。根据典型分子时代分布及横向组合对比,确定其地质时代为巴列姆—阿普第期,孢粉植物群反映的气候特征为潮湿的亚热带。     

海拉尔盆地南部早白垩世地层及其孢粉组合

本文对内蒙古海拉尔盆地南部探井地层中孢粉化石进行了系统研究,自下而上建立了9个孢粉化石组合。根据孢粉化石组合中Gicatricosisporites,Pilosisprites,Impardecispora,Aequitriradites等重要分子的地质时限特性,认为其时代应属早白垩世。这些孢粉化石资料对建立海拉尔盆地地层层序,进而指导盆地油气勘探具有十分重要的理论和现实意义。     

江汉盆地渔洋组上部的古新世孢粉组合

20世纪70至80年代,几乎所有关于江汉盆地跑马岗组和渔洋组的古生物文献都将其时代确定为晚白垩世。李伟同在深入地研究了跑马岗组标准剖面上的轮藻化石后提出跑马岗组大部分属于古新统。取自层位与跑马岗组相当的渔洋组上段上部的岩芯样品经分析后获得了丰富的孢粉化石。这一组合总的面貌与王大宁等获得的晚白垩世渔洋组的第三组合区别明显,而与古近纪的新沟嘴组的第四组合相似处很多。在该孢粉植物群中,常见于当地的晚白垩世分子,如希指蕨孢属、克拉梭粉属、江汉粉属、刺参粉属、鹰粉属等没有或极少见到。而在本组合常见的南岭粉属、五边粉属、漆树粉属等多出现在我国南方古新世地层中。因此,其时代很有可能为古新世。如果是这样,渔洋组上部有可能跨越了白垩系和古近系界线。从当前孢粉植物群含有很多亚热带成分以及麻黄粉属以及胡颓子粉属、忍冬粉属等看,它反映了江汉盆地当时偏干旱的亚热带气候。     

甘肃平凉安国镇白垩系六盘山群的孢粉植物群

对甘肃—宁夏交界处六盘山群一个露头剖面进行了孢粉分析,从和尚铺组、李洼峡组、马东山组和乃家河组中获得了孢粉化石。这些材料表明,六盘山群的孢粉植物群中白垩纪分子丰度高、分异度大,时代可能为晚Aptian—早、中Albian。孢粉反映当时的气候条件中性偏干,其中和尚铺组和乃家河组比李洼峡组和马东山组要更干一些。根据孢粉资料,六盘山群的和尚铺组至乃家河组的沉积可与盆地主体的志丹群的上部即泾川组对比,三桥组则可能相当于罗汉洞组。陕甘宁盆地西部边缘区缺少相当于志丹群宜君组至环河华池组的早白垩世早期的沉积。     

新疆塔里木盆地早白垩世克孜勒苏群孢粉组合

基于新疆塔里木盆地西南区和东南区下白垩统克孜勒苏群发现的孢子花粉57属96种的研究,建立了克孜勒苏群下亚旋回和上亚旋回孢粉组合,并根据孢粉组合讨论了地层时代。克孜勒苏群孢粉组合以松杉目的优势、真蕨目海金沙科的显赫和原始被子植物的出现为特征。克孜勒苏群下亚旋回孢粉组合与欧洲韦尔登期(陆相尼欧克姆期)和北美巴列姆期孢粉组合可以对比,克孜勒苏群上亚旋回孢粉组合与欧亚大陆、北美和澳大利亚阿普第期至阿尔必期孢粉组合可以对比。根据孢粉学证据,克孜勒苏群下亚旋回应属于尼欧克姆期,或赫特里夫期至巴列姆期,克孜勒苏群上亚旋回应归于阿普第期至阿尔必期。     

朝鲜安州盆地早白垩世孢粉组合

报道朝鲜安州盆地下白垩统龙盘组孢子花粉３４ 属５９ 种（包括２ 新种）,并根据孢粉组合讨论了地质时代和古气候特征。龙盘组孢粉组合以裸子植物花粉为主,蕨类植物孢子次之,出现少许原始被子植物花粉。松柏纲花粉在组合中占绝对优势;海金沙科和莎草蕨科孢子则在蕨类中占优势。根据孢粉组合,龙盘组的时代应属早白垩世巴列姆期至阿普第期;安州盆地当时气候温暖偏干,属亚热带半干旱型