the"Yanshan Movement".During the Mid-LateJurassic(165±5 Ma),great readjustment of plateamalgamation kinematics took place in EastAsia an...2008040570新 疆 东 部 觉 罗 塔 山 脉 晚 中 生 代 热 构 造 演 化 :来 自 磷 灰 石 裂 变 径 迹 数 据 的 证 据 = LateMesozoic Thermotectonic Evolution of the JueluotageRange,Eastern Xinjiang,NorthwestChina:Evidence from Apatite Fission Track Data.( 英 文 ). Zhu Wenbin; Wan Jinglin; Shu Liangshu;Zhang Zhiyong; Su Jinbao; Sun Yan; GuoJichun; Zhang Xueyun. Acta GeologicaSinica, 2008, 82(2): 348-357Although many authors have emphasized theCenozoic history of deformation,exhumation andcooling in the Tianshan area related to the India-Asia collision,very little is known about theMesozoic history of compression and upliftwithin the Tianshan.In order to obtain informationabout the Mesozoic exhumation history andprocesses of cooling in eastern Tianshan,fissiontrack methods on apatite were used.Samplingwas made in the Jueluotage Range.Three samples(Z001-Z003)weretaken from granite inborehole ZK630...2008040571美 国 密 西 西 比 西 南 部 下 赛 诺 曼 阶 下Tuscaloosa 组 陆 相 和 古 气 候 记 录 = Early-Cenomanian terrestrial facies and paleoclimaterecords of the Lower Tuscaloosa Formation,southwesternMississippi. ( 英 文 ). Ufnar D F.Stratigraphy, 2007, 4(1): 49-66Sphaerosiderite oxygen isotope values fromthe Early Cenomanian Lower Tuscaloosa Formation,or LTF, extend a mid-Cretaceous meteoric18O latitudinal gradient 9° south to 25° Npaleolatitude, and contribute to a better understandingof the hydrologic cycle in North Americaduring a “greenhouse” period in Earth history.Sphaerosiderites have been used to reconstructpaleolatitudinal trends in meteoric 18O valuesthroughout western North America, and the 18Ovalues have been used in a stable isotopemass balance model to produce quantitative estimatesof mid-Cretaceous precipitation rates andlatent heat flux values. The LTF meteoric 18Ovalues help constrain the critical subtropical valueson the coastal plain bordering Tethys and thesoutheasterncoast of the Western Interior Seaway.The LTF, an important subsurface petroleumunit (2800-4000 m depths) in southernMississippi, contains amalgamated pedogenicallymodified,sphaerosiderite-bearing mudstonesand sandstones. Cored intervals of the Early-Cenomanian Stringer Sandstone Member of theLower Tuscaloosa Formation (LTF) of SouthwesternMisississippi are characterized by 6lithofacies units. The descriptive lithofacies unitsinclude: (1) thickly-bedded sandstones; (2)thinly bedded sandstones; (3) carbonaceousmudstones and siltstones; (4) red-mottled mudstones;(5) purple and yellow mottled mudstones;and (6) flaser and lenticular bedded carbonaceousmuddy sandstones. The sphaerosideritesare most commonly observed in gleyed domainsof the red-mottled mudstones. These mudstoneswere clays, and silty clay loam soils, and arecharacterized by prominent red mottles in agleyed matrix with an abundance of translocatedclays, pedogenic slickensides, carbonaceous debris,and root traces.The sphaerosiderites yield18O vs. 18C values, meteoric sphaerosideritelines (MSLs), that may be used as a proxy forpaleoprecipitation 18O values. TheMSL (18O)values range新 生 界2008040572德 国 下 莱 茵 盆 地 第 三 系 中 含 大 量 果 实 沉 积 物的 成 因 = The genesis of mass carpological deposits(Bedload Carpodeposits) in the Tertiary ofthe Lower Rhine Basin, Germany. ( 英 文 ). Gee CT. Palaios, 2005, 20(5): 463–478Large, well-preserved carpofloras from Mioceneand Pliocene lignite-bearing sequences ofthe Lower Rhine Basin in Germany occur in avariety of fluvial and lacustrine facies, includingchannel, point-bar, cut-off channel (oxbow-lake),crevasse-splay, channel-bar (sand-gravel flat),and lake-delta deposits. Despite their occurrencein a wide spectrum of depositional facies, theaccumulations share a suite of distinctive characteristics.They appear as a jumble of woody materialdominated by abraded pieces of wood, includingconifer cones, woody fruits, seeds, smallbranches, and charcoal in an unconsolidated matrixof medium- or coarse-grained sand. The keycharacteristic of the fossil plant remains iswoodiness. Close association between the lignifiedmaterial and these grain sizes indicates thatthese woody fruits are hydrodynamically equivalentto medium- to coarse-sized sand, and weretransported as bedload during flood events.Transport by bedload also is evidenced by thehigh degree of roundness in associated woodclasts, by abrasion in some diaspores, and by thelack of non-resistant plant parts (e.g., leaves,flowers, fleshy or delicate tissues) in the accumulations.Thus, the lignified plant remains behaveas sedimentary clasts in the water column,but only after they have been fully saturated withwater. Mass carpological accumulations in verycoarse-grained sand on active point bars in theSieg River near Bonn and their formation duringevents of extreme discharge serve as a modern172
analog for the fossil carpofloras. New terminologyand concepts pertaining to these mass carpologicaldeposits, or “bedload carpodeposits,”also include the terms “bedload carpobiofacies,”and “bedload carpolithofacies.” A basic depositionalmodel for the genesis of bedload carpodepositsis presented.2008040573埃 及 Sinai 中 东 部 古 新 世 单 调 的 半 浮 游 相 的“ 层 序 地 层 学 ” = The Paleocene of central EastSinai, Egypt; "sequence stratigraphy" in monotonoushemipelagites. ( 英 文 ). Luening S;Marzouk A M. Journal of Foraminiferal Research,1998, 28(1): 19-39Tracking sequences in hemipelagic facies iscomplicated because of the rather monotonousappearance of the hemipelagic deposits, lack ofsubaerial exposure, and absence of typical sequencestratigraphic geometries. This study addresseshow the sequence stratigraphic modelcan be applied in hemipelagic environments.Eight latest Maastrichtian to early Eocenehemipelagic sections from central East Sinaihave been recorded and biostratigraphically andpaleobathymetrically studied by means of plankticand benthic foraminifera, calcareous nannofossilsand sedimentological observations. Sealevelchanges were reconstructed using the foraminiferalplanktic/benthic ratio, hiatuses, hardcalcareous marl beds, and benthic foraminifera.Correlation of the observed paleobathymetriccycles yielded a sea-level history for the regionconsistent with the existing literature. Candidatesystems tracts boundaries were interpreted usinga simple model that provides an approximaterelationship between relative sea level and systemstracts. Sequence stratigraphic history wascompared with regional sea-level curves fromcentral/southern Egypt, Tunisia and Texas, aswell as with European (Hardenbol and others, inpress) and "global" (Haq and others, 1987) sequencecharts. Correlation is excellent for theearly and middle Paleocene (K/T boundary tomid Globanomalina pseudomenardii Zone).Deposition in central Sinai during this time may,therefore, have been predominantly controlledby eustatic sea level rather than local tectonics.Interpretation of sea-level development in thelate Thanetian is more ambiguous. The studydemonstrates the applicability of the sequencestratigraphic concept in suitable hemipelagicenvironments. The Paleocene hemipelagites ofSinai represent a paleobathymetric interval suitablefor sea-level changes to be recorded in theforaminiferal faunal composition in terms of theplanktic/benthic ratio.2008040574地 中 海 的 再 次 海 泛 早 于 中 新 世 - 上 新 世 界 线 ?来 自 意 大 利 托 斯 卡 尼 (Tuscany) 上 莫 西 拿 阶(Messinian) 地 层 序 列 的 古 生 物 和 地 球 化 学证 据 = Did the Mediterranean marine refloodingprecede the Mio–Pliocene boundary? Paleontologicaland geochemical evidence from upperMessinian sequences of Tuscany, Italy. ( 英 文 ).Carnevale G; Longinelli A; Caputo D; BarbieriM; Landini Walter. Palaeogeography PalaeoclimatologyPalaeoecology, 2008, 257(1-2): 81-105The events related to the Messinian salinitycrisis are among the most deeply investigated ofEarth's history. According to the current hypothesisof Neogene paleogeographic evolution,approximately 5.5 Ma ago, after evaporiticsedimentation and before the Mio–Plioceneboundary, the Mediterranean was characterizedby the widespread development of non-marineenvironments inhabited by molluscs and ostracodsof brackish affinity. The Messinian postevaporiticdeposits that testify such a dramaticenvironmental change are commonly referred toas ‘Lago-mare’ and have been reported fromseveral outcrops and boreholes throughout theentire Mediterranean basin. The origin of ‘Lagomare’conditions is commonly interpreted as theresult of the synergistic effect of both the humidclimatic conditions and change of the drainagepatterns at the Mediterranean scale, with the captureof Paratethyan brackish waters. A few recentstudies, however, suggest that such a scenarioprobably represents an oversimplificationof the original context, from both a paleogeographicaland paleoenvironmental point ofview. Unfortunately, the results of these studieshave never been commonly accepted and theproposed evidences have been considered questionable.In this paper we describe the fish assemblagesfrom the ‘Lago-mare’ deposits of twolocalities, Cava Serredi and Podere Torricella,located in the Neogene hinterland basins of Tuscany,central Italy. These assemblages consistsof a mixture of marine euryhaline and stenohalinetaxa suggesting that the depositional environmentswere characterized by permanentlyopen connections with a marine basin filled withnormal marine waters. In order to better definethe paleontological significance of these upperMessinian fish assemblages, the oxygen, carbonand strontium isotopic composition of fish otolithsand other fossils has been measured. Theseisotopic compositions are strongly indicative ofthe presence of normal marine conditions closeto the depositional environments testified by thesedimentary sequences, thereby implying thatthe interpretation of the geochemical results areconsistent with those derived from the paleoecologicalanalyses of the fish assemblages.Based on the integrated paleoichthyological–173
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第 4 卷 第 4 期古 生 物 学
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Fossils, i.e. remains of living org
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nus, a new ichnospecies of Fuersich
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以 松 柏 类 和 盾 籽 类 为
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Island, Papua New Guinea. ( 英 文
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A C. Canadian Journal of Earth Scie
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mated depositional interval of 10 t
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北 海 古 近 纪 一 种 新 型
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scabrate-verrucate, and rugulate mi
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the Tetori Group in the Kuzuryu are
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during the Late Pleistocene are rec
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ane have been previously reported f
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Albian-early Paleocene in the Anady
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Poaceae and Plantago lancelata. shr
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the eastern segment of its southern
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member of the La Despedida Formatio
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lembaye (Maastricht region) and fro
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tion the ontogenetic stage of the p
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早 期 种 子 植 物2008040123
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中 国 内 蒙 古 东 北 部 晚
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2008040137辽 西 北 票 中 侏
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综 论2008040144低 PH 值 对 Amm
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ut poorly studied. Dimorphism (or t
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and migration towards the sediment-
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schackoinids, indicating that the e
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( 英 文 ). Nomaki H; Yamaoka A; S
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新 西 兰 Otago 南 海 岸 全
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Scotland. ( 英 文 ). Murray J W.
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A three-year sediment trap experime
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a habitat disturbance and is nearly
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Pitted surfaces associated with wal
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Saanich than exists today sedimento
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2008040208大 堡 礁 区 域 绿
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was pulsed, with major declines usu
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mycelium, was observed where reticu
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suggest that reticulopodia are self
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to OIS 3, compared to the more stab
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Patterson R T. Journal of Foraminif
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known xenophyophore species grouped
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aminiferal Research, 2001, 31(4): 2
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arctic environment over this critic
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Semeniuk T A. Journal of Foraminife
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sible to make production calculatio
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arcellacean strains from within the
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annual flux rates is calculated and
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corded in the Colli Berici (type lo
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most complete OAE 2 sections. While
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oceanic plate stratigraphy from gra
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A series of layers rich in organic
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lowermost Danian planktonic foramin
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characters shows that only one geno
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able for regional palaco-environmen
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margin of the southwest Caribbean.
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Brachyelasma, Amplexobrachyelasma,
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litic biozones lower than their FAD
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The middle Permian Cryptospirifer f
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石 科 = Ammonoid faunas from the
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Buchiid bivalves are geographically
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velopment of both the sedimentary a
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China. ( 英 文 ). Huang Diying; N
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