文蛤MERETRIX MERETRIX LINNAEUS工厂化人工育苗试验

文蛤的人工催产、浮游幼虫培育和稚贝水泥池培养试验结果表明：（1）用阴干与流水结合的方法刺激亲贝能获得理想俏产效果。（2）在水温28．0～29．1℃,比重1．0160—1．0187,pH值8．2－8．4条件下,用亚心形扁藻作文蛤D幼的开口饵料和壳顶幼虫饵料,生长快（日增长高达24．5μm）、成活率高（72．3％）、浮游期短（仅5－6天）。（3）文蛤眼点功出水泥池无砂底附苗试验获得成功,且单位面积附苗量高达433．3万颗／m2。（4）室内水泥池铺砂培养文蛤稚贝,前期生长快,但当壳长达300μm后,稚贝分泌一种粘液,生长和成活受到影响。建议定期翻池洗苗,当壳长达500μm后尽早将苗移至池塘内砂滩培养。     

库页岛厚蛤蜊的人工繁殖和胚胎发育

通过亲贝促熟、人工催产、幼体培育和采苗等技术环节,初步建立了库页岛厚蛤蜊（Pseudocardium sachalinense）的人工繁育技术。对库页岛厚蛤蜊胚胎发育过程的观察表明,在水温22～24℃,盐度28～30条件下,受精卵经约50min开始卵裂;约20h发育至D形幼体;经约11d的人工培育,幼体出现足和水管原基...     

粘性土为主的地基强夯的时效性

根据浦东国际机场飞行区跑道地基强夯工程（三标）实测的不同时间的静力触探资料,讨论以粘性土为主的地基强夯强度增长的时效现象,得出：粘性土为主的地基,强夯的加艇具有滞后特性。     

Early Cenozoic paleontological assemblages and provenance evolution of the Lishui Sag,East China Sea

The East China Sea Shelf Basin generated a series of back-arc basins with thick successions of marine- and terrestrial-facies sediments during Cenozoic. It is enriched with abundant oil and gas resources and is of great significance to the petroleum exploration undertakings. Therein, the Lishui Sag formed fan delta, fluvial delta and littoral-to-neritic facies sediments during Paleocene–Eocene, and the research on its sedimentary environment and sediment source was controversial. This study analyzed the paleontological combination characteristics, and conducted a source-to-sink comparative analysis to restore the sedimentary environment and provenance evolution of the Lishui Sag during Paleocene–Eocene based on the integration of detrital zircon U-Pb age spectra patterns with paleontological assemblages. The results indicated that Lishui Sag was dominated by littoral and neritic-facies environment during time corroborated by large abundance of foraminifera, calcareous nannofossils and dinoflagellates. Chronological analysis of detrital zircon U-Pb revealed that there were significant differences in sediment sources between the east and west area of the Lishui Sag. The western area was featured by deeper water depths in the Paleocene–Eocene, and the sediment was characterized by a single Yanshanian peak of zircon U-Pb age spectra, and mainly influenced from Yanshanian magmatic rocks of South China Coast and the surrounding paleo-uplifts. However, its eastern area partly showed Indosinian populations. In particular, the upper Eocene Wenzhou sediments were featured by increasingly plentiful Precambrian zircons in addition to the large Indosinian-Yanshanian peaks, indicating a possible impact from the Yushan Low Uplift to the east. Therefore, it is likely that the eastern Lishui Sag generated large river systems as well as deltas during time. Due to the Yuquan Movement, the Lishui Sag experienced uplifting and exhumation in the late stage of the late Eocene and was not deposited with sediments until Miocene. Featured by transitional-facies depositions of Paleocene–Eocene, the Lishui Sag thus beared significant potential for source rock and oil-gas reservoir accumulation.     

南设得兰群岛西海域S_(11)岩芯沉积物中碎屑矿物及沉积作用的探讨

本文对南设得兰群岛西海域S_(11)钻孔岩芯中的重、轻矿物作了描述,按矿物在垂直方向上的变化和优势矿物种确定矿物组合类型,并将晚更新世到全新世的341cm沉积地层划分为四层:1.上火山碎屑矿物沉积层,2.中火山碎屑矿物沉积层,3.火成碎屑矿物沉积层(深海砂层),4.下火山碎屑矿物沉积层。本文还讨论了物质来源和深海砂层的可能成因。     

孙吴-嘉荫盆地嘉D1井孢粉地层学研究

对孙吴一嘉荫盆地北部逊克县的嘉DI井采集的孢粉和沟鞭藻类化石进行了分析研究,划分出?个特征较明显的孢粉组合：富饶组Betulaepollenires-Schizaeoisporites-Polypodiaceaesporites组合,总体反映晚白垩世晚期Maastrichtian期的特点;太平林场组Gothanipollis-Gabionisporis-Balmeisporites组合,时代为晚白垩世Santonian—Campanian期;淘淇河组上段Hammenia-Taxodiaceaepollenites-Appendicisportes组合,时代为早白垩Aptian—Albian期;淘淇河组下段Cicatricosporites-Cyathidites-Osmundacidites组合,时代为早白垩Valanginan—Barrcmian期。这是迄今该地区据钻井实际资料所发现的较连续孢粉组合序列。     

Integrated Radiolaria,benthic foraminifera and conodont biochronology of the pelagic Permian blocks/tectonic slices and geochemistry of associated volcanic rocks from the Mersin Mélange,southern Turkey: Implications for the Permian evolution of the northern Neotethys

Blocks and tectonic slices within the Mersin Mélange (southern Turkey), which are of Northern Neotethyan origin (Izmir–Ankara–Erzincan Ocean (IAE)), were studied in detail by using radiolarian, conodont, and foraminiferal assemblages on six different stratigraphic sections with well‐preserved Permian succesions. The basal part of the Permian sequence, composed of alternating chert and mudstone with basic volcanics, is assigned to the late Asselian (Early Permian) based on radiolarians. The next basaltic interval in the sequence is dated as Kungurian. The highly alkaline basic volcanics in the sequence are extremely enriched, similar to kimberlitic/lamprophyric magmas generated at continental intraplate settings. Trace element systematics suggest that these lavas were generated in a continental margin involving a metasomatized subcontinental lithospheric mantle source (SCLM). The middle part of the Permian sequences, dated by benthic foraminifera and conodont assemblages, includes detrital limestones with chert interlayers and neptunian dykes of middle Wordian to earliest Wuchiapingian age. Higher in the sequence, detrital limestones are overlain by alternating chert and mudstone with intermittent microbrecciated beds of early Wuchiapingian to middle Changhsingian (Late Permian) age based on the radiolarians. A large negative shift at the base of the Lopingian at the upper part of section is correlated to negative shifts at the Guadalupian/Lopingian boundary associated with the end‐Guadalupian mass extinction event. All these findings indicate that a continental rift system associated with a possible mantle plume existed during the late Early to Late Permian period. This event was responsible for the rupturing of the northern Gondwanan margin related to the opening of the IAE Ocean. When the deep basinal features of the Early Permian volcano‐sedimentary sequence are considered, the proto IAE oceanic crust formed possibly before the end of the Permian. This, in turn, suggests that the opening of the IAE Ocean dates back to as early as the Permian.     

流体晶、流体晶矿物组合、流体岩及其研究意义

流体是地球各圈层之间相互作用的纽带,在成岩、成矿过程中起着十分重要的作用。目前,流体的研究主要集中在流体对先存矿物岩石进行的交代作用方面,而对流体直接结晶形成的矿物领域研究较少。文中根据作者近几年的研究成果对从流体直接结晶而成的矿物——流体晶以及流体晶矿物组合、流体岩等的定义、特征进行了归纳总结。最新的研究结果显示：岩浆中可以含有大量的流体,这些流体来源既可以是岩浆演化富集、岩浆与围岩相互作用产生,亦可以是外部来源。因此,流体晶矿物、流体岩在自然界应该是普遍存在的。流体晶矿物的提出将深化人们对地质过程的理解,发展岩石学及矿床学的研究新领域,有利于矿床勘探和成矿预测。