Spatial and temporal distribution of polycyclic aromatic hydrocarbons in finegrained sediments of the East China Sea

The nearshore mud area along the Changjiang （Yangtze River） estuary and the coast of Zhejiang and Fujian provinces, and the distal mud area to the southeast of Cheju Island, Korea are the modem accumulative centers, thus, being the ＂sinks＂ of pollutants such as Polycyclic Aromatic Hydrocarbons （PAHs） in the East China Sea （ECS）. PAHs of surface sediment samples from the mud areas of the ECS and a ^210Pb dating sediment core collected using a gravity core from the coastal mud area in the ECS were quantified by GC/MSD with the internal standard materials.     

First ICSU Regional Meeting for Asiaand the Pacific

The First International Council for Science(ICSU) Regional Meeting for Asia and the Pacific was held from April 25-27, 2005 in Kuala Lumpur, Malaysia. The meeting was hosted by the Ministry of Science, Technology and Innovation of Malaysia and the Academy of Sciences Malaysia. Welcoming remarks were delivered by Tan Sri Datuk Dr. Ahmad Zaharudin Idrus, President,Academy of Sciences Malaysia and Prof. Thomas Rosswall, Executive Director,ICSU. His Excellency Dato‘ Sri Dr. Jamaludin Jarjis, Minister of Science, Technology and Innovation, Malaysia opened the meeting.About 40 participants attended the meeting,representing national science academies from the Asia Pacific and international scientific unions that are active in the region. The International Union of Geological Sciences(IUGS) was represented by the President,Prof. Zhang Hongren. Dr. Joy Pereira, Chair of the IUGS Commission on Geoscience for Environmental Management (IUGS-GEM)also attended the meeting as an Observer.     

CONFERENCE ON STRATIGRAPHIC CLASSIFICATION AND NOMENCLATURE OF UPPER PRECAMBRIAN OPENS IN BEIJING

<正> The conference on stratigraphic classification and nomenclature of Upper Precamb rian held in Beijing on July 22—24, 1982 was organized by the Commission on stratigraphy of China. The discussion was centred on the meaning of the term "Sinian" and the extent of its usage. This eonferenee is of great significance in the discussion of the stratigraphic problems of China convened for the first time by the Commission on stratigraphy of China.     

Geological research at the Natural History Museum of Moscow University, 1759-1930 （in Russian）

In 2006, the Moscow publishing house Nauka （Science） published a 246-page book by Zoya A. Bessudnova entitled Geological Research at the Natural History. Museum of Moscow University, 1759-1930 as No. 32 in its series ＂Sketches on the History of Geological Knowledge＇. The author is a geologist and Senior Researcher in the Department for the History of Geology of the Vernadsky State Geological Museum of the Russian Academy of Sciences, and a member of the International Commission on the History of Geological Sci- ences （INHIGEO）.     

CONFERENCE ON STRATIGRAPHIC CLASSIFICATION AND NOMENCLATURE OF UPPER PRECAMBRIAN IN CHINA OPENS IN BEIJING

The conference on stratigraphic classification and nomenclature of Upper Precambrianheld in Beijing on July 22-24, 1982 was organized by the Commission on stratigraphy ofChina. The discussion was centred on the meaning of the term "Sinian" and the extent of     

PROCEEDINGS OF GENERAL MEETINGS OF THE GEOLOGICAL SOCIETY OF CHINA.HELD ON OCTOBER,NOVEMBER AND DECEMBER 1926.

A joint meeting of the Geological Society of China, Peking Union Medical College and Peking Society of Natural History was held on October 26 in honour of H. R. H. the Grown Prince ef Sweden. Dr. W. H. Wong presided. The meeting was opened by Dr. H. S. Houghton, the President of the Peking Union Medical College, followed by a welcome address delivered by Dr. W. H. Wong on behalf of the several scientific organizations.     

ICS Stratigraphy Prizes awarded at the 33rd International Geological Congress

At the 33rd International Geological Congress in Oslo, the International Commission on Stratigraphy （ICS） awarded the Digby McLaren Prize to Prof. Carlton E. Brett and the ICS Prize to Jozsef Palfy. These prizes were established by ICS in order to empha- size the key role of stratigraphy in the full range of geologic studies.     

TERTIARY MAN IN ASIA—THE CHOU KOU TIEN DISCOVERY

A rich fossiliferous deposit at Chou Kou Tien 70 li to the south west of Peking was first discovered in the summer of 1921 by Dr. J. G. Andersson and later surveyed and partially excavated by Dr. O Zdansky. A preliminary roport on the site was published by Dr. Andersson in March 1923 (Mem. Geol.     

Global chronostratigraphical correlation table for the last 2.7 million years

The table provides a correlation of chronostratigraphical subdivisions of late Cenozoic geological time, spanning the last 2. 7 million years. The formal division of the Quaternary is the responsibility of the International Commission on Stratigraphy＇s （ICS） Subcommission on Quaternary Stratigraphy （SQS）, in partnership with the International Union for Quaternary Research＇s （INQUA） Commission on Stratigraphy and Chronology （SACCOM）. This is the third published version of the chart. Earlier versions are Gibbard et al., 2004, 2005. See http：//www.quaternary.stratigraphy.org.uk/correlation/ for history.     

Discovery of the Mid-Late Jurassic volcanic rocks(163.4 Ma) in Nanhuangcheng Island,Shandong Province,China

1.Objectives Changshan Islands are located on the geographical boundary between the Bohai Sea and the North Yellow Sea,China.Intensively tectonic deformation developed in this area,which is an important connection point to study the tectonics of the Shandong Peninsula and Liaoning Peninsula.Previous studies have shown that the lithologies of the three northern islands(Beihuangcheng Island,Nanhuangcheng Island,and Xiaoqin Island)of the Changshan Islands include Neoproterozoic quartzite,phyllite,and slate(Fuzikuang Formation of the Penglai Group),and a few areas are covered by Quaternary slope deposits,marine deposits and loess(Fig.1 a;Qiao EW et al.,2019).Recently,a set of volcanic rocks was firstly discovered in Nanhuangcheng Island(Fig.1 a).     

TYPES AND GENESIS OF THE IRON DEPOSITS IN SOUTHERN ANHUI

In the province of Anhui along the Yangtze River, especially on the south of it there occur many iron deposits. They have been described in "The Iron ore deposits and iron industry of China" by Dr. F. R. Tegengren published by the Geological Survey in the Memoir Series A, No. 2. However Dr.     

NOTE ON A MAMMALIAN MICROFAUNA FROM YENCHINGKOU NEAR WANHSlEN,SZECHUAN

While on a trip to Szechuan in the spring of 1934,I spent a few days,together with Dr.G.B.Barbour and P.Teilhard de Chardin,at Wanhsien,inorder to visit the famous fossiliferous site of Yenchingkou.The latter site hadalready been visited and excavated in 1921-23 and 1925-26 by Dr.WalterGranger of the Third Asiatic Expedition of the American Museum of NaturalHistory~1.     

New Data of Daomanite and Hongshiite

In 1974 the author preliminarily reported two new platinum group minerals-daomanite and hongshiite. The two minerals were accepted by the Commission on New Minerals and Minerals Names of the International Mineralogical Association in 1976 and 1982 respectively. Because of the conditions at that time, the work was preliminary, for example, there were only reflectance values of four wave bands. Recently the author again made measurements of reflectances, corrected cell parameters by the four-circle diffractometer and electron diffraction and supplemented their new occurrences and nomenclature.     

Geoscience Frontiers 2019 Annual Convention

The 2019 Geoscience Frontiers Annual Convention was held at the China University of Geosciences(Beijing),China on September 20,2019(Fig.1).This convention assembled earth scientists from four countries,including Australia(Dr.Christopher Spencer),Italy(Dr.Andrea Festa),UK(Dr.Pieter Vermeesch),China,and also representative from Elsevier(Beijing).The Convention started with the introduction by Dr.Lily Wang,Editorial Assistant at Geoscience Frontiers,followed by the inaugural address by Prof.M.Santosh,Editorial Advisor of Geoscience Frontiers.     

PHYSIOGRAPHIC STAGES OF CENTRAL CHINA~1

Among the far-reaching plans envisaged by the late Dr. Davidson Black as part of the work of the Cenozoic Laboratory was a correlation of the Pliocene and Pleistocene deposits of the whole of China on the basis of geomorphology. This called for a study of the physiography of the major     

Spatial and temporal distribution of polycyclic aromatic hydrocarbons in fine- grained sediments of the East China Sea

The nearshore mud area along the Changjiang (Yangtze River) estuary and the coast of Zhejiang and Fujian provinces, and the distal mud area to the southeast of Cheju Island, Korea are the modern accumulative centers, thus, being the “sinks” of pollutant…     

Geomicrobiological in-situ containment of uranium in subsurface and its long-term stability

Uranium is a redox-sensitive element. While U （Ⅵ）, the oxidized form of uranium, is soluble and thus mobile in groundwater, U （Ⅳ） readily forms UO2（s） and is precipitated. Recent geomicrobiological researches demonstrated that dissimilatory metal reducing bacteria can effectively remove uranium fi＇om contaminated groundwater by reducing soluble U （Ⅵ） to relatively insoluble U （Ⅳ）. This novel form of microbial reduction of U （Ⅵ） is reported to be much faster than abiological reduction. The objective of this work was to investigate U （Ⅵ） reduction by indigenous bacteria in uranium-bearing black shale sediment and to determine whether microbially-precipitated uranium has long-term stability in subsurface. Through this study, fundamental information on the effects of microorganisms on the fate of redox-sensitive elements in natural settings will be provided. Soil and sediment samples were collected from uranium-bearing black shale in the Dukpyung area in Korea. Microbial inoculum was prepared from soil and sediment slurry supernatant. The reactors were purged with N2 ： CO2 gas （80 ; 20） to maintain anaerobic condition. Glucose, acetate or lactate was added as an electron donor at a final concentration of 5 mM.     

Report of the restudy of the defined global stratotype of the base of the Silurian System

The Global Stratotype Section and Point （GSSP） for the base of the Silurian System was defined in 1985. Since that time, a number of researchers have suggested that this section has serious deficiencies for use as a GSSP. As a result, in 2000, the Subcommission on Silurian Stratigraphy （SSS） proposed undertaking a formal restu@ of this GSSP, which was subsequently approved by the International Commission of Stratigraphy （ICS）. The result of this restudy was the formal proposal that the current GSSP, at 1.6 m above the base of the Birkhill Shale, at Dob＇s Linn, Scotland, should be maintained as the same locality and stratigraphic level, but the bios- tratigraphical definition of the boundary should be revised. The previously defined, basal Silurian grapto- lite zone, the Parakidograptus acuminatus Zone, should be subdivided into a lower Akidograptus ascensus Zone and a higher E acuminatus Zone. The base of the A. ascensus Zone, marked by the first appearance of A. ascensus, should be regarded as the biostratigraphic mark for the base of the Silurian. This proposal has now been formally approved by the SSS and ICS, and ratified by International Union of Geological Sciences. This is the first GSSP to undergo formal restudy and redefini- tion, and the proposal also included a recommended procedure for restudy of GSSPs.     

Atmospheric pollutants transport tracks revealed from 131I, 137Cs,and 134Cs leaked from Fukushima accident and 7Be and 210Pb observed at Guiyang of China

A massive earthquake measuring 9.0 on the Richter scale that occurred on March 11, 2011, on Honshu Island, Japan, caused radioactivity leakage from the Fukushima Nuclear Power Plant, which led to the leakage of artificial nuclides （131I, 137Cs, and 134Cs） and their global transportation by atmospheric circulation. This paper re- ports a systematic comparative observation on radioactive concentrations of natural nuclides （7Be and 210Pb） and artificial nuclides （131I, 137Cs, and 134Cs） at the surface level, measured in weekly continuous aerosol sampling at Mount Guanfeng, Guiyang, China, from March 17, 2011 to April 28, 2011. During this period, the variations in the nuclide concentrations associated with their transport paths were analyzed with 315 hour back-trajectories of air mass initialized 500 m above the surface level at Guiyang. The results show that the pollutants of nuclear leakage from the Fukushima accident were transported to the Guiyang region of China via two significant pathways. In the first pathway the first wave of nuclear pollutants were transported from west to east in air masses at higher altitudes via global atmospheric circulation. The nuclear pollutants encircled the Earth almost once and after about 10 days to two weeks, between March 24 and March 31,2011, intruded Guiyang from the northwestern region of China. In the second pathway, the nuclear pollutants from the Fukushima region arrived at Guiyang between April 7 and April 14, 201 l, via air masses at lower altitudes that moved southwards because of the squeezing of the northeast Asian weather system and then by the influence, in succession, of the northeastern and southeastern air currents in the low-latitude region. The first transport pathway for atmospheric pollutants is on a global scale and based on air masses at higher altitudes, and the second transport pathway is on an eastern Asia regional scale and based on the air masses at lower altitude.     

Geological and paleontological investigation of Rote Island, Indonesia

Geological and paleontological studies of Rote Island have proven that the distribution of the Meso-zoic rocks (especially Triassic, Jurassic, and Creta-ceous) is broader than was thought by previous work-ers. The Paleozoic rocks are not exposed, but some fossils collected from the surface suggest that such rocks are present deep down in the subsurface of this island. The fossils were brought to the surface along with the other materials by mud volcanoes which are common on the island.