三峡库区中侏罗世植物化石及所指示的气候环境

报道了陈家湾组的植物化石８属１１种（包括１新种）即Ｎｅｏｃａｌａｍｉｔｅｓｓｐ．１,Ｎ．ｓｐ２．Ｐｈｌｅｂｏｔｅｎｓｏｆ．ｐｏｌｙｐｏｄｉｏｄｉｅｓＢｒｏｎｇｎｉａｒｔ,Ｔｈａｕｍａｔｏｐｔｅｒｉｓ,ｓｐ．,Ｃｏｎｉｏｐｔｅｒｉｓｓｉｎｐｌｅｘ（Ｌ．ｅｔＨ．）,ＣｌａｄｏｐｈｌｅｂｉｓｓｈａｎｓｉｅｎｓｉｓＳｚｅ,Ｃ．ｘｉｅｔａｎｅｎｓｉｓＭｅｎｇ（ｓｐ．ｎｏｖ．）Ａｎｏｍｏｚａｍｉｔｅｓｇｒａｃ     

周口店地区第四纪哺乳动物群的演化与环境变迁探讨

讨论了Ａｌｉｌｅｐｕｓａｎｎｅｃｔｅｎｓ、ＨｙｐｏｌａｇｕｓｂｒａｃｈｙｐｕｓＬｅｐｕｓｓｐ．、Ｓｃｉｕｒｏｔａｍｉａｓｐｒａｅｃｏｘ、ＡｌｌｏｃｒｉｃｅｔｕｓｔｅｉｌｈａｒｄｉＣｒｉｃｅｔｉｎｕｓｖａｒｉａｎｓ、Ｈｙｐｅｒａｃｒｉｕｓｙｅｎｓｈａｎｅｎｓｉｓ、Ａｌｌｏｐｈａｉｏｍｙｓｃｆ．ｐｌｉｏｃａｅｎｉｃｕｓ、Ｐｒｏｅｄｒｏｍｙｓｃｆ．ｂｅｄｆｏｒｄｉ、Ｃｈａｒｄｉｎｏｍｙｓｎｉｈｅｗａｎｉｃｕｓ、Ｍｕｓｃｆ．ｍｕｓｃｕｌｕｓ和Ａｐｏｄｅｍｕｓｄｏｍｉｎａｎｓ的地史分布。根据哺乳动物群的分析与对比，得出第１８地点为早更新世早期，第１２地点、东洞地点为早更新世中期，第９地点、西洞地点为早更新世晚期，第１３地点为早更新世末期至中更新世初期，第１、２、５、６、１１、１０、２１、２３及上店洞地点为中更新世，新洞为中更新世晚期至晚更新世早期，东岭子洞为晚更新世，山顶洞为晚更新世晚期。还讨论了周口店地区一些主要第四纪哺乳动物群的生态类型特点，第四纪的气候波动及生态环境变迁。     

35 Ma－An Important Natural Periodicity in Geological History： Concept of Natural Crisis and Its Possible Cause

３５Ｍａ－ＡｎＩｍｐｏｒｔａｎｔＮａｔｕｒａｌＰｅｒｉｏｄｉｃｉｔｙｉｎＧｅｏｌｏｇｉｃａｌＨｉｓｔｏｒｙ：ＣｏｎｃｅｐｔｏｆＮａｔｕｒａｌ Ｃｒｉｓｉｓ ａｎｄ Ｉｔｓ Ｐｏｓｓｉｂｌｅ ＣａｕｓｅＳｈｉＸｉａｏｙｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＧｅｏ?..     

秦岭核桃坝石炭系深水相遗迹化石,沉积环境和古地理分析

研究剖面位于陕西凤县核桃坝，构造上属秦岭造山带的商丹缝合带。核桃坝剖面下部为浅海陆棚相粉砂岩、泥灰岩和灰岩；中、上部以重力流沉积为主。在中部浊积岩中产遗迹化石：Ｎｅｒｅｉｔｅｓ ｆｅｎｇｘｉａｎｅｎｓｉｓ ｉｃｈｎｏｓｐ．ｎｏｖ．，Ａｃａｎｔｈｏｒｈａｐｈｅ ｃｆ． Ａ． ｉｎｃｅｒｔａ Ｋｓｉａｚｋｉｅｗｉｃｚ，Ｃｈｏｎｄｒｉｔｅｓ ｉｃｈｎｏｓｐ．，Ｐｌａｎｏｌｉｔｅｓ ｉｃｈｎｏｓｐ．等。其     

河南酮柏地区三叠纪早期放射虫动物群及其地质意义

本文描述了采自河南南部桐柏地区蔡家凹大理岩中的放射虫化石，共计７属８种（其中１新属２新种），包括Ａｒｃｈａｅｏｓｐｏｎｇｏｐｒｕｎｕｍ ｃｏｍｐａｃｔｕｍ Ｎａｋａｓｅｋｏ ｅｔ Ｎｉｓｈｉｍｕｒａ，Ｙａｎｇｉａ ｃｈｉｎｅｎｓｉｓ Ｆｅｎｇ，Ｓｈｅｎｇｉａ ｙｉｎｉ（Ｆｅｎｇ），Ｃｅｎｏｓｐｈａｅｒａ ｓｐ．，Ｔｒｉａｓｓｏｃａｍｐｅ？ｓｐ．，Ｐａｃｔａｒｅｎｔｉｎｉａｓｐ．，Ｔｒｉａｓｓｏｎｍ     

COAL PORPHYRINS

ＣＯＡＬＰＯＲＰＨＹＲＩＮＳＣＯＡＬＰＯＲＰＨＹＲＩＮＳＬｕｏｆｕＬｉｕＵｎｉｖｅｒｓｉｔｙｏｆＰｅｔｒｏｌｅｕｍ，Ｂｅｉｊｉｎｇ１０２２００Ｇ．ＥｇｌｉｎｔｏｎＯｒｇａｎｉｃＧｅｏｃｈｅｍｉｓｔｒｙＵｎｉｔ，ＵｎｉｖｅｒｓｉｔｙｏｆＢｒｉｓｔｏｌ，...     

Geological Implications for the Deep-Derived Mafic Enclaves from Cenozoic Shoshonitic Rocks in Jianchuan-Dali Area,West Yunnan

1ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＡｉｌａｏｓｈａｎ ＪｉｎｓｈａｊｉａｎｇＣｅｎｏｚｏｉｃａｌｋａｌｉ ｒｉｃｈｐｏｔａｓｓｉｃｍａｇｍａｔｉｃｂｅｌｔｅｘｔｅｎｄｓｏｖｅｒａｄｉｓｔａｎｃｅｏｆ370 0ｋｍｉｎｔｈｅＮＷ ＮＷＷｄｉｒｅｃｔｉｏｎ (ＺｈａｎｇＹｕｑｕａｎａｎｄＸｉｅＹｉｎｇｗｅｎ ,1 997) .Ｓｔｕｄｉｅｓｏｆｐｅｔｒｏｌｏｇｙａｎｄｇｅｏｃｈｅｍｉｓｔｒｙｉｎｄｉｃａｔｅｔｈａｔｔｈｅｉｎｔｅｒｍｅｄｉａｔｅｔｏｉｎｔｅｒｍｅｄｉａｔｅ ａｃｉｄａｌｋａｌｉ ｒｉｃｈｐｏｒｐｈｙｒｙｇｒ…     

豫西前寒武纪汝阳群遗迹化石

本文研究的遗迹化石：Ｒｕｙａｎｇｉｃｈｎｕｓ ｌｏｙｕｅｎｓｉｓ ｉｃｈｎｏｇｅｎ，ｅｔ ｉｃｈｎｏｓｐ．ｎｏｖ．，Ｔｏｒｒｏｗａｎｇｅａ ｒｏｓｅｉ ｗｅｂｂｙ，Ｃｈａｎｇｃｈｅｎｇｉａ ｉｃｈｎｏｓｐ．，Ｓｑｕａｍｏｄｉｃｔ ｙｏｎ（？）ｉｃｈｎｏｓｐ．等发现于河南西部鲁山县和汝阳县的汝阳群云梦山组和北大尖组。根据同位素年龄值，微古植物和叠层石资料，产遗迹化石的汝阳群应相当于中元古代，可以和蓟     

INFORMATION FOR CONTRIBUTORS

ＩＮＦＯＲＭＡＴＩＯＮ　ＦＯＲ　ＣＯＮＴＲＩＢＵＴＯＲＳ￥／／ＪｏｕｒｎａｌｏｆＣｈｉｎａＵｎｉｖｅｒｓｉｔｙｏｆＧｅｏｓｄｅｎｏｃｓ（ＩＳＳＮ１１０２－０７０５ＣＮ４２－１２７９／ｐ）ｉｓａｇｅｏｌｏｇｉｃａｌｍａｇａｚｉｎｃｐｕｂｌｉｓｈｅｄｂｉ...     

新疆三塘湖盆地老爷庙组古植物特征及其时代

老爷庙组的命名者认为这套地层属于泥盆—石炭系过渡层，在地质图上标为早石炭世。新材料表明，植物大化石Ｌｅｐｔｏｐｈｌｏｅｕｍｒｈｏｍｂｉｃｕｍ－Ａｒｃｈａｅｏｐｔｅｒｉｓｆｉｓｉｌｉｓ－Ｃｙｃｌｏｓｔｉｇｍａｓｐ．组合的时代应属晚泥盆世晚期，孢子化石Ｒｅｔｕｓｏｔｒｉｌｅｔｅｓｓｉｍｐｌｅｘ－Ａｐｉｃｕｌｉｔｕｓｉｓｐｏｒａｈｕｎａｎｅｎｓｉｓ（ＳＨ）组合显示的时代也为晚泥盆世晚期，从而纠正了这一地层属于泥盆—石炭系过渡层的观点。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

正~~     

GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861