FERN SPORES IN THE OUTER SHELF OF THE EAST CHINA SEA

In this paper the distributional patterns of fern spores are discussed based on 132 surface sediment samples and core samples of 48 sites taken from the outer shelf of the East China Sea and part area of the southern Huanghai Sea, which covers the area between Lat. 26°30′-34° N and Long. 123°-128°E. In general the content of fern spore in the surficial sediments increases from west to east of the area studied. The greatest abundance occurs at the nearby Long. 126° E and then progressively decreases eastwards. There is a decrease tendency in abundance of fern spores from north to south. In the cores, the abundance of fern spores decreases from the upper part to the lower part. The changes in the composition of fern spores are corresponding to their abundance.From the study of fern spores it has been shown that the sporo-pollen assemblage of the Holocene in a given area is mainly composed of fern spores. Thus, the boundary between the Holocene to the Pleistocene in the area studied can be recognized     

浙江天台、新昌、嵊县地区玄武岩沉积夹层的孢粉、硅藻组合

<正> 浙江东部分布着一套产状平缓、多旋迴喷发的橄榄玄武岩,主要见于嵊县—新昌盆地及宁海—天台盆地,此外在普陀、临海、诸暨、义鸟和东阳也有零星出露。玄武岩常夹有河湖相沉积层,并产褐煤、褐铁矿、硅藻土等,1930年孟宪民创建嵊县玄武岩一名,由于缺乏化石证据,时代一直被置于晚第三纪到第四纪。近年来浙江区测队、浙江石油队曾作了不少的野外研究工作,李浩敏、郑亚惠也曾从化石角度讨论其时代,但时代的归宿目前依然存在不同看法。1977年以来,我们在俞隆美、黄正维等协助下,对嵊县玄武岩沉积夹层     

宁波盆地早白垩世孢粉组合及古气候

宁波盆地早白垩世孢粉组合以裸子植物花粉占绝对优势(约75％),蕨类孢子其次,为24％左右,被子植物花粉极少,仅占0-2％,为Classopollis-Cicatricosisporites-Inaperturopollenites组合,其时代相当于早白垩世的Barremin-Aptian期,反映为热带、亚热带的热干气候。     

东海外陆架蕨类孢子的研究

本文论述了东海外陆架蕨类孢子的分布规律,即由西向东,含量为低—高—低;由北向南,含量为高—低;由表向下,含量为高—低,孢子成分也相应发生变化。资料表明,外陆架以蕨类孢子为主的孢粉组合所反映的地层时代为全新世,根据蕨类孢子的百分含量和成分,可以划分该区晚更新世和全新世的地层界限。本文尚探讨了蕨类孢子与水动力的关系和外陆架的物质来源。     

东海陆架全新世沉积底界及其厚度

本文根据东海陆架64个柱状剖面的孢粉分析资料,探讨了陆架全新世和晚更新世沉积层的界限;全新世的分层;全新世沉积层的厚度及其影响因素。图6,表4,参考文献5。