中国之海百合化石

Ⅰ、中国海百合化石研究小史 1889年洛采氏描写云南及甘肃之海百合化石十余种,是为中国海百合化石研究之始。其中有Cyathocrinus五种:其一采自甘肃张掖定羌庙石炭纪地层中,颇似C.virgaliensis;其余四     

延边石炭二叠系一个新的重要植物化石层位的发现

自６０年代以来,依“槽台”学说,运用传统综合地层学观点,试图建立延边地区石炭二叠系统一地层柱,几经努力未获成功,形成旷日持久的争议。８０年代,引入现代地层学“地层多重划分”的新的学术思想,又出现了两区（陆缘带）与三区（陆缘带）等不同见解。９０年代,有...     

宁武宽草坪铝土矿中腕足化石碎片的发现

宁武宽草坪铝土矿中腕足化石碎片的发现李海光刘雪梅张秀华（山西地质矿产勘查开发局２１６地质队）笔者于１９９０年承担宁武宽草坪铝土矿区的补充详查时，在ＺＫ１１７１孔２４回次的岩心中打到了动物化石碎片。碎片壳纹清晰，属腕足动物化石无疑。现将ＺＫ１７１１钻孔...     

江西中石炭纪植物化石之发见

石炭纪植物化石在江西尚罕有详细记载,前此王竹泉、谭锡畴、王绍文诸氏曾有石炭纪煤系报告,似因缺乏化石证据,时代未曾确定,一九三七年冬,刘辉泗先生与国达在赣南贡水     

观赏石奇葩——化石雨花石

雨花石历来以五彩缤纷的色彩、千姿百态的纹理以及人们赋予的丰富文化内涵为世人称颂。 雨花石品种很多，有矿物娄玛瑙、蛋白石、玉髓、水晶，岩石娄硅质岩、砂岩、石灰岩、大理岩、火成岩，以及古生物化石等。其中化石雨花石为地质历史时期保存在地层里的生物遗体、遗迹，主要来源于古长江流域两岸山体，经长期风化、破碎、搬逗、磨蚀而成。其浑圆度高，有的已玛瑙矿化，色彩花纹美丽，被视为佳品．     

中国之海相上三叠纪

我国之上三叠纪地层,上部之知识最为缺乏。犹有确定或较为可靠之上三叠纪化石地点仅限于我国西南滇、黔、鄂、川诸省。惟此各地点即在同一省境之内亦往往不易彼此相比。本     

辽宁本溪地区本溪组下部腕足类化石的发现及其意义

本文描述了辽宁本溪地区中石炭统下部的腕足类化石共12个属18个种,其中新种6个。并对它的时代进行了讨论,提出了本溪统下部层位的腕足动物化石具有早石炭世晚期到中石炭世早期的色彩,并将本溪地区本溪统下部紫红色岩段划出,建立一个新组一田师付组。并且认为田师付组可与甘肃靖远组对比与苏联的巴什基尔组相当。     

微量元素分布揭示腕足化石壳体原始信息保存现状

以产于四川龙门山地区泥盆系观雾山组的有铰纲腕足化石Ｉｎｄｅｐｅｎｄａｔｒｙｐａ ｌｅｍｍａ Ｃｈｅｎ为研究对象,利用激光熔样等离子质谱（ＬＡ－ＩＣＰ－ＭＳ）对其壳体棱柱层中Ｆｅ、Ｍｇ、Ｍｎ、Ｎａ、Ｂａ和Ｓｒ六种微量元素进行了就位分析。它们在壳体横切面中的对称分布特征总体上与壳体增生方式和过程相一致,表明壳体的绝大部分未经成岩作用的改造。与常用的结构判据、阴极发光判据和微量元素含量判据相比较,微量元     

NOTE ON THE CHIHSIA LIMESTONE AND ITS ASSOCIATED FORMATION

Much has been written about the age of the Chihsia Limestone, little is however made known of its stratigraphical boundaries. This unfortunate state of affairs has led to rather confused arguments which would not have     

兴蒙造山带中二叠世哲斯期腕足动物古生物地理归属

两极分布的凉水型分子是古地理一级区划的重要标志之一。根据兴蒙遣山带中二叠世哲斯期的10个腕足动物属(族)的地理分布的特征分析,Yakovlevia等腕足动物的地理分布具有两极分布的特点。是典型的凉水型的腕足动物,并具有亲北极生物的特征,其古生物地理区划应该属于北方大区。     

海南岛含杜内早期腕足动物群层的发现

白沙县金波附近的 Spirifer subgrandis Rotai,Unispirifer extensus Tan,Fusella tornacensis (Koninck) ,Punctospirifer insculptus (Phillips) ,Marginatia huaqiaoensis Tan,Palaeochoristites sp.,Megachonetes sp.,Plicochonetes sp.,Schuchertella sp.,Pustula sp.,Sentisia sp.,Crurithyris sp.,Rhipidomella spp.等是海南岛首次发现的最丰富的杜内早期腕足动物群。据此 ,该地区含化石的南好组第四段确定为下石炭统岩关阶 ,似可与湖南马栏边组、黔南汤耙沟组等层位对比。以石燕贝类最繁盛、长身贝类数量少为特征的该动物群与华南其他地区同期腕足动物群存在诸多相同属种但又有明显差异。     

巢县二叠系栖霞组臭灰岩段异地成因碳酸盐岩

下扬子地区二叠系栖霞组臭灰岩段广泛发育。以巢县为例 ,研究表明组成臭灰岩段的石灰砾岩并非正常沉积。剖面特征 ,岩石学、沉积学和地球化学特征的分析结果 ,显示了石灰砾岩的砾石来源于浅海碳酸盐台地 ,它们作为碳酸盐岩碎屑流的产物 ,沿着台地边缘的斜坡 ,被搬运到半深海—斜坡处再沉积。环绕于砾石周围的胶结物和砾岩层之间的薄层硅质粒泥灰岩 ,主要是由等深流沉积物组成。因此 ,臭灰岩段碳酸盐岩主要是异地成因 ,沉积环境属于碳酸盐台地周缘水体较深的斜坡。     

PRINCIPAL STAGES IN THE PERMIAN EVOLUTION OF ASIAN MARINE BASINS AND BRACHIOPOD FAUNA

In consequence of Hercynian folding, the Asian marine basin outlines repeatedly and essentially changed throughout the Permian. At the opening of the Sakmarian age the communication between the Arctic and Tethys marine basins was realized through the Caspian Sea region. In the middle of the Sakmarian age this channel was closed and the Arctic and Tethys seas were isolated from each other resulting in the development of various brachiopod faunas in both basins. Such an environment continued up to the beginning of the Upper Permian when a transgression of the boreal sea far to the south into the Mongolian geosyncline area and farther on into India and Burma took place. The Upper Permian marine basins of these regions became, therefore, inhabited by fauna of the Arctic type. Meanwhile the tropical forms of brachiopods did not migrate from the Tethys into the Arctic. At the beginning of the Kazanian age the sea retreated from Mongolia and the Arctic and Tethys basins became almost isolated again, their fauna growing essentially different towards the close of the Permian. In consequence of the fact that the tropical forms common in the Tethys couldn't exist through out the Permian within the present area of the Arctic, it might be assumed that the climate was most severe at the time, i.e. the region was located in the nearest proximity to the pole. At the same time the region adjacent to Japan where the North Pole moved to during the Permian (according to the opinion of most advocates of the polar migration theory) is found to be inhabited by tropical fauna. Thus analysis of the distribution of Permian fauna doesn't confirm the theory of a considerable migration of the earth's poles.—Auth. English summ.     

广西玉林北均塘组腕足动物群的发现及意义

首次报道了广西玉林林木北均塘组校深水相腕足动物群。论证了其较深水相的性质；讨论了部分种的演化；建立了四个腕足生物带；简述了与笔石带的关系并进行了国际对比；确定其时代为晚洛赫柯夫－早布拉格早期，得出腕足动物集群具有快速迁移能力的结论；鱼化石的发现也为我国华南早泥盆世早期海相与陆相地层的对比提出了线索。     

A PETROGRAPHICAL STUDY OF THE WURMKALK(With two Plates)

I. GENERAL DESCRIPTION. Wurmkalk is the term given by von Richthofen to Conglomeraticlimestone in the Cambrain beds in North China. It is widely distributed is thenorthern provinces, vis., Fengtien, Shantung. Chihli, Shansi, Honan, etc. The     

湖南中部早石炭世腕足动物组合及几个问题的讨论

对湘中下石炭统腕足动物群的系统研究表明,该地区的腕足动物群自下而上可划分为6个组合带;1.“plicatifera” tenuiplicaia Hou Ass.（Lower Toumaisian）,2.Unispiri-fer tournaicensis（Kon.）—Eochoristites alatus（Ching）Ass.（Middle Tournaisian）; 3．Finosp-irifer shaoyangensis（Ozaki）—Marginatia vaughani（Muir--Wood）Ass.（Upper Tournasian）;4.（?）itiliproductus groberi（Kren.）——Pugilis hunanensis（Ozaki）Ass.（Lower Visean）;5.Para-kansuella subrhomboidea Sp·nov.——Kansuella——Gigantoproductus maximus （M’coy）Ass．（UpperVisean）;6.Latiproductus latissimus（Sow.）—Gigantoproductus edelburgensis（Phillips）Ass.（Lower Namurian or Serpukhovian）.这些腕足动物大部分是特提斯区广泛分布的属种,能够与西欧,苏联等地的同时期动物群进行很好的对比.对邵东组腕足动物的研究表明,该组的地质时代属晚泥盆世末期.其所产腕足动物能很好地与西欧及苏联同期地层的腕足动物比较.研究表明,在湘中杜内与维宪阶的生物地层界线,根据腕足动物,应置于Finospirifer-marginatia动物群和Delepinea subcarinata—Megachonetes zimmermanni组合带之间,而不是过去认为的Eochoristives—Martiniella动     

IS CHIHSIA LIMESTONE REALLY DEVELOPED IN KWANGTUNG AND KWANGSI PROVINCES OF SW,CHINA?

The term "Chihsia limestone" of Nanking Hills was primarily appliedby F.v.Richthofen to all those calcareous formations underlain by Devonianquartzite and overlain by Permian coal series which carries the characteristicbrachiopod Lyttonia.For more than 50     

Anidanthus(腕足动物)的分布及其意义

Anidanthus是凉水型腕足动物的代表之一，主要出现在早二叠世Sakmarian期至中二叠世Wordian期，先驱分子在晚石炭世的巴什基尔期已出现，部分种延至晚二叠世。Anidanthus主要分布于北方大区和冈瓦纳大区，具两极分布的特点。气候是造成Anidanthus两极分布的最主要因素。该属中、晚二叠世在特提斯区出现，是全球气候变冷事件的反应。