山东古生代生物地层单位的划分

本文按照不同生物地层单位的含义,对山东古生代生物地层单位进行了厘定,共划出４１个生物带,其中寒武纪有２１个;奥陶纪１０个,包括３个哑层间隔带;石炭纪３个;二叠纪７个。这些生物地层单位的确立,对统一山东古生代生物地层单位的划分和推动今后的区调工作将起到重要的作用。     

浙江省老虎洞组和黄龙组地层划分与对比

浙江省老虎洞组、黄龙组生物地层的研究较薄弱，尤其是笾化石带的建立不够系统，使地层的正确划分和对比存在一些问题。笔者通过精测浙江省桐庐县杨家老虎洞组、黄龙组地层剖面，系统采集了筵化石样品，经筵薄片研究。自下而上新建2个筵化石带：Profusulinella simplex带和FusulineUa bocki—Fusulina mayiensis带(二带化石归属达拉阶)。并与浙江长兴、杭州、常山地区的老虎洞组、黄龙组剖面进行了生物地层和岩石地层的划分对比。对比结果表明：Profusulinella simplex带上延至黄龙组中一下部，     

泥河湾地区晚新生代生物地层带

本文根据岩石地层，哺乳动物化石及古地磁资料的综合分析研究，将泥河湾地区晚新生代生物地层划分为５个生物地层时限带，并推算出每个带的年限，它们是：（１）Ｈｉｐｐａｒｉｏｎ ｈｏｕｆｅｎｅｎｓｅ时限带，？－３．３０Ｍａ；（２）Ｍｉｍｏｍｙｓ ｏｒｉｅｎｔａｌｉｓ时限带，３．３０－２．４８Ｍａ；（３）Ｍｉｍｏｍｙｓ ｙｏｕｈｅｎｉｃｕｓ时限带，２．４８－１．８７Ｍａ；（４）Ａｌｌｏｐｈａｉｎｏｙｓ ｃｆ．     

塔里木盆地北部古生代层序地层系统

层序地层系统，本质上就是以各种不同级次的海平面变化所控制的不同级次的沉积层序为单位，在年代地层学格架中所建立起来的地层系统。本文以露头剖面的层序地层研究为主要依据，结合生物地层和地震地层的研究成果，在进行详细层序划分的基础上，在塔里木盆地北部古生代地层中建立起了由不同周期叠加的海平面变化所控制的不同级次的层序所组成的层序地层系统。通过生物地层和层序地层相结合的方法，厘定并标定了一系列重要地质界线的     

云南泥盆系区域地层及有关问题探讨

云南泥盆系地层完整,发育齐全、岩相多样,分布广泛;出露良好,接触界线清楚;生物群落丰富,化石保存完好。中国南方陆相、海相泥盆系发育最好的地区之一,在国际上久负盛名。笔者对云南泥盆系的分区及地层划分进行了详细讨论。论证了泥盆系顶、底界线、内部界线和有关问题．总结出各组段的生物地层特征和沉积相特征,建立了各组段的生物组合带和生物带,探讨了云南泥盆系与国内外同期地层的对比问题。     

中国东南区区域地层概论

经过２０多亿年的演变和发展，中国东南区及其邻近海域的沉积作用形成了各类沉积岩系，构成了不同地体及各类地质单元。在各省多重地层划分对比研究的基础上，通过进一步清理岩石地层单位，建立起东南区地层序列，并结合生物地层和年代地层，进行多重地层划分与对比，在区域地层的沉积环境，岩相古地理特征，沉积盆地的演化等方面取得了重要的认识。     

攀西米市盆地的生物地层研究

阐述了米市盆地地层中古生物的分布层位、产出状况及组合面貌，新建了１０个生物地层单位（７个组合带、１个延限带、２个顶峰带）。     

闽西老虎洞组下部（ting）类生物地层的再研究

基于闽西上杭和宁化两地石炭系老虎洞组下部(ting)带的系统研究．通过(ting)类生物地层划分和对比及岩相古地理的分析，认为上杭一宁化一线篓类生物地层存在着横向变化，上杭Pmefusulinella带与宁化Rseudoendothyra ninghuaensis带应为同期异相的化石带。与之相关的老虎洞组底部的白云岩层年代地层应分别归属于滑石板阶上部及达拉阶下部。     

福建宁化上石炭统（ting）类生物地层研究

福建宁化上石炭统筵类生物地层自下而上划分为4带3亚带：1)Pseudoendothyra ninghuaensis带，2)Fusulina—Fusulinella带，其中包括Fusulinella helenae—Pseudostaffella paxadoxa亚带、Beedeina mayiensis亚带和Fusulina quasicylindrica亚带，3)Protriticites obsoletus带和4)Montiparus montiparus—Quasifusulina fusiformis带。该区生物地层可与我国华南、华北和西北沉积区以及俄罗斯地台同期地层进行对比，其年代地层归属于上石炭统达拉阶至逍遥阶下部，相当于国际地层表上石炭统(宾夕法尼亚亚系)的莫斯科阶和卡西莫夫阶。     

地层规范和指南当今趋向述评

对地层学中的习俗存在着两种不同的认识，一种认为，这些习俗应予固定并条例化以利正式使用；另一种认为，这些习俗应随着科学的发展而有所演变。一些地层规范和指南把地层类别减到最低限度，这不仅削弱了规范本身的作用，还产生了超出规则范围的假权威。此外，把地层类别多样化的倾向，也使目前正从事的工作出现逻辑上的混乱。基本的地层规范是把全球所有岩石体确定为正式的岩石地层单位，这是一种独立的（即非成因的）分类，可作为地层学各分支共同的基本参照。这一程序有助于统一那些事实上已经取得一致意见的原则，也有助于用年代地层划分和时间数值划分的方法来表达时代。除了这些空间－时间格架的分类外，对那些涉及新观察和新观点并含有不确定因素的分类，如生物地层学、磁性地层学、构造地层学、气候地层学和层序地层学，将它们视作指南比规则更为合适。     

吉南地区青沟子剖面寒武纪生物地层单位清理的初步意见

吉南地区的寒武纪生物化石（以三叶虫为主）极其发育，前人曾对其进行了详尽的研究，先后建立了７个阶１７个化石带。但化石带的含义不甚明确，多以标准分子为代表，即标准化石带（时间带？）。笔者等于１９９１￣１９９３年在白山市幅（１／５万）区调填图时，以区内的青沟子剖面为例，利用前人在该剖面上连续采集的三叶虫生物化石资料，按照多重地层划分的原则，对生物地层单位进行了初步清理，建立了５个正式生物地层单位－延限带     

珠江口盆地东部定量生物地层划分对比及沉降历史分析

用定量生物地层学的方法(RASC 和 CASC)对珠江口盆地东部34口井的古生物资料进行统计分析,建立了最佳生物地层序列。根据化石事件间的 RASC 距离,将这个最佳序列划出10个化石组合带,用 CASC 方法建立了区域地质年表,展示了地质年代、地层和RASC 分带之间的关系,并完成了井间对比。最后,根据 CASC 所提供的钻井时-深曲线,对10口井进行了沉降史分析,揭示了该区中新世以来构造沉降的时空特征。     

华北地台晚古生代含煤地层多重划分

以６０个大体均匀分布于华北地台的地层剖面为基础,以晚古生代聚煤盆地的整体性为依托,对华北晚古生代地层进行多重划分研究,在岩石地层方面,研究了地层分区、划分了１８个岩石地层单位“组”,分析了组的穿时性,在生物地层方面,重点介绍了蜒、古植物和孢粉生物地层,划分了各个组合带、延限带和顶峰带,分析了生物演化系列,空间展布和对比,提出了多方面的新认识,在年代地层方面,应用界线层型概念以及与首要门类生物地层单     

Ostracod Biostratigraphy of the Late Cretaceous Qingshankou Formation in the Songliao Basin

An ostracod biostratigraphic study was performed on 425 samples from the composite geological section constructed by using cores taken from five selected wells drilled in the Late Cretaceous Qingshankou Formation in the Songliao basin.A total of 19 ostracod zones are established in the formation,of which 3 are newly established and 3 are revised.The 19 ostracod zones are described in detail.This study provides a basis for the detailed stratigraphic division and correlation of the Qingshankou Formation and the Gaotaizi oil reservoir in the oilfield in the Songliao basin.     

Gondwana biostratigraphy of the Purnea Basin (eastern Bihar,India), and its correlation with Rajmahal and Bengal Gondwana basins

Integrated biostratigraphic studies are undertaken on the newly discovered Gondwana successions of Purnea Basin which have been recognized in the subsurface below the Neogene Siwalik sediments. The four exploratory wells, so far drilled in Purnea Basin, indicated the presence of thick Gondwana sussession (± 2450m) with varied lithological features. However, precise age of different Gondwanic lithounits of this basin and their correlation with standard Gondwana lithounits is poorly understood due to inadequate biostratigraphic data.Present biostratigraphic studies on the Gondwana successions in the exploratory wells of PRN-A, RSG-A, LHL-A and KRD-A enable recognition of fifteen Gondwanic palynological zones ranging in age from Early Permian (Asselian-Sakmarian) to Late Triassic (Carnian-Norian). Precise age for the Gondwanic palynological zones, recognized in the Purnea Basin and already established in other Indian Gondwana basins, are provided in the milieu of additional palynological data obtained from the Gondwana successions of this basin.The Lower Gondwana (Permian) palynofloras of Purnea Basin recorded from the Karandighi, Salmari, Katihar and Dinajpur formations resemble the palynological assemblages earlier recorded from the Talchir, Karharbari, Barakar and Raniganj formations respectively, and suggests the full development of lower Gondwana succession in this basin. The Upper Gondwana (Triassic) succession of this basin is marked by the Early and Middle to Late Triassic palynofloras that resemble Panchet and Supra-Panchet (Dubrajpur/Maleri Formation) palynological assemblages, and indicates the occurrence of complete Upper Gondwana succession also in the Purnea Basin.The lithological and biostratigraphic attributes of Gondwana sediments from Purnea, Rajmahal and western parts of Bengal Basin (Galsi Basin) are almost similar and provides strong evidences about the existence of a distinct N-S trending Gondwana Graben, referred as the Purnea-Rajmahal-Galsi Gondwana Graben. Newly acquired biostratigraphic data from the Gondwana sediments of CHK-A, MNG-A and PLS-A wells from central part of Bengal Basin and Bouguer anomaly data suggest that these wells fall in a separate NE-SW trending graben of “Chandkuri-Palasi-Bogra Gondwana Graben”. Although, the post-Gondwana latest Jurassic-Early Cretaceous Rajmahal Traps and and intertrappean beds succeed the Upper Gondwana successions in Rajmahal, Galsi and Chandkuri-Palasi Gondwana basins, but not recorded in the drilled wells of Purnea Basin, instead succeeded by the Neogene Siwalik sediments.     

A High-precision planetary stratigraphic correlation of sedimentary Phanerozoic sequences using a combination of methods of event,paleomagnetic, sequence and cyclic stratigraphy

For the first time a high-precision planetary stratigraphic correlation of Phanerozoic sedimentary marine and continental deposits on the level of mark beds and members was produced, using a combination of methods of event, paleomagnetic, sequence and cyclic stratigraphy. Schemes of diachronism of biostratigraphic zones for the Late Maastrichtian are proposed.     

Albian and Cenomanian planktic Foraminiferida from the Trawne Beds (Pieniny Klippen Belt,Polish Carpathians)

Eighteen Albian and Cenomanian planktic Foraminiferida from the Pieniny Klippen Belt of Poland are discussed. A local biostratigraphic zonation (six zones) is proposed and certain problems of palaeoecology are reviewed. The lithostratigraphical element is the so-called Trawne Beds, a Cretaceous flysch in the Pieniny Klippen Belt.     

A new Permian bivalve zonal scale of northeastern Asia. Article 1: Zonal subdivision

Extensive new data obtained during the recent decade on several Permian reference sections in the northern, western, and southern Verkhoyansk region; the Balygychan block; the Omolon massif; and some adjacent regions provided grounds for substantial refining of the Permian bivalve zonal scale of northeastern Asia. The modified version of this scale includes 24 biostratigraphic units ranked as zones, subzones, and faunal beds. Zonal assemblages of bivalve mollusks were refined and supplemented, and the age of the zones was specified and substantiated. The stratigraphic distribution of the defined bivalve taxa is illustrated by a special detailed table.     

华北寒武系层序地层格架及碳酸盐台地演化

华北寒武系包括两大套岩系，即辛集组至徐庄组以碎屑岩与碳酸盐岩交互沉积为特征的岩系，代表碳酸盐台地的发展阶段；张夏组至上寒武统的碳酸盐岩系，代表台地的成熟阶段，其中张夏组代表平顶型台地发育阶段，晚寒武世地层形成缓坡型台地的发育阶段。在岩性、岩相、相序研究的基础上，在寒武纪地层中识别出８个三级层序，它们在碳酸盐台地不同的发育阶段，具有不同的相序特征，以及由不同的相序组构代表的、不同的地层堆积作用特点。