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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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