搜索到63篇“ ICHNOFACIES“的相关文章
Taenidium barretti ichnofabric and rainfall seasonality:Insights into dryland suites of Scoyenia ichnofacies
2023年
The present work analyzes the monotypic Taenidium barretti ichnofabric developed in abandoned channels and floodplains to understand its paleoecological significance in highly seasonal fluvial systems.The data come from the Cretaceous paleosols of the Marília Formation(Bauru Basin,SE Brazil),in which the T.barretti ichnofabric and rhizoliths represent the biotic record.Beetle larvae are considered to be the most likely T.barretti tracemakers in these paleosols.The intensity and recurrence of bioturbation suggest that the windows of opportunity for beetle population growth were very short and controlled by the progressive substrate desiccation after flood cessation.The characteristics of the trace fossil assemblage suggest soil colonization by r-strategic organisms triggered by flooding events that provided the resource inputs necessary for their living during rainy seasons.The results also show that in fluvial systems with high discharge variations,the boundaries between a“pre-desiccation suite”and a“desiccation suite”in the Scoyenia ichnofacies can be diffuse due to the short duration of colonization windows and progressive terrestrialization of floodplains and channels.Therefore,the frequency of flooding events,the lowered water table,and the rapidity of substrate desiccation constrained colonization by other burrowers and may be considered as firstorder factors controlling the generation of a monotypic T.barretti ichnofabric.Thus,the monotypic Taenidium ichnofabric in the Scoyenia ichnofacies context is an ichnomarker of brief windows for colonization in highly seasonal environments.
Diego Luciano NascimentoRenata Guimaraes NettoAlessandro BatezelliFrancisco Sergio Bernardes LadeiraDaniel Sedorko
关键词:ICHNOLOGYPALEOPEDOLOGYICHNOFABRIC
The ichnofacies and ichnoassemblages in terrestrial deposits of China被引量:9
2014年
Over the last 30 years,terrestrial ichnofossil research was mostly focused on three ichnofacies:the Scoyenia ichnofacies,characterizing transitional fluvio-lacustrine environments,the Mermia ichnofacies,characterizing fully lacustrine settings,and the Termitichnus ichnofacies,characterizing terrestrial environments,especially,paleosol deposits.Specially in China,many terrestrial ichnofossils,including at least 24 ichnogenera from fluvial deposits and 59 ichnogenera from lacustrine deposits,have been found in Mesozoic and Cenozoic basins.Most of them belong to the common elements of the three ichnofacies and consist of feeding,grazing,crawling,dwelling,and resting traces and rhizoliths.Based on the composition,occurrence and distribution characteristics of trace fossils from terrestrial sedimentary basins of China,36 ichnoassemblages have been proposed.However,the most common 12 ichnoassemblages,in which six are found in fluvial sedimentary environments from the Upper Cretaceous of the Sichuan Basin in western China and Xixia Basin in western Henan Province,include:(1)Scoyenia-Rusophycus ichnoassemblage generated in the floodplain along channels and the shallow water swales or lakes(such as oxbow lakes);(2)Skolithos-Arenicolites ichnoassemblage produced in the high energy sandy bar(heart bar or point bar)of the channel environment;(3)Gastruichnus-Palaeophycus ichnoassemblage developed in the channel-levee environment;(4)Beaconites-Taenidium ichnoassemblage occurring in the embankment(crevasse splay)sedimentary environment;(5)Beaconites-Rhizolithos ichnoassemblage appearing in the floodplain sedimentary environment,and(6)Beaconites-Scoyenia ichnoassemblage distributed in the periodically exposed overbank lake(extremely shallow lacustrine)sedimentary environments.The other six ichnoassemblages are found in lacustrine sedimentary environments:(1)Scoyenia-Skolithos ichnoassemblage always developed in periodically exposed,extremely shallow lakeshore and interdistributary bay of the lake delta plain under drought or sem
Bin HuYuan-Yuan WangHui-Bo Song
关键词:ICHNOFACIESMESOZOICCENOZOIC
四川江油马鞍塘上三叠统天井山组Glossifungites遗迹相被引量:3
2014年
首次在四川江油马鞍塘天井山组顶部发现Thalassinoides suevicus,属于Glossifungites遗迹相,属滨海或潮下带在未完全石化的、处于半固结状态的沉积底质上所产生的遗迹化石组合,发育在停积面上,因受到下伏硬底构造的限制,仅产于上表面,没有向下发展,是该地区从开阔海台地相转变为局限海台地相的证据。
周志澄陈廸舒罗辉李罡Willems H蔡华伟许波王学恒陈金华
关键词:上三叠统
白垩纪四足动物足印的生物地层学、生物年代学与遗迹相被引量:10
2012年
从全球范围来看,白垩纪四足动物的足印多数是非鸟恐龙与鸟类留下的痕迹;少量足印来自翼龙、鳄鱼、龟、哺乳动物和其他四足动物。白垩纪的足迹化石以东亚(尤其是中国和朝鲜)和北美西部的最为人所知。南美(主要是阿根廷和巴西)也有一定数量广泛分布的足迹化石,欧洲、非洲与澳大利亚的白垩纪足迹组合则鲜为人知。以白垩纪四足动物的足印记录为基础,我们对两个全球足印生物年代重新进行了检查。早白垩世生物年代以蜥脚类与鸟脚类的足迹为特征。晚白垩世生物年代中的蜥脚类足迹较少,但是鸭嘴龙、暴龙和角龙的足迹增多了。另外,白垩纪足印化石的记录中记载了许多重要的生物地层学信息,如北美白垩纪中期蜥脚类恐龙的消失,以及白垩纪末恐龙的绝灭。越来越多来自东亚的白垩纪足印记录使我们对更精细的地方性白垩纪足印生物年代学有了初步印象。因此,以地方性四足恐龙(包括鸟类)遗迹属的地层分布为基础,可以识别出三个或四个足印生物年代。种类丰富并具有地方性特色的东亚的白垩纪鸟类动物的遗迹群,可能指示白垩纪时东亚存在着一个独特而繁盛的鸟类动物群。以足印化石为基础的这一假说有待进一步的验证。
Martin G.LOCKLEYSpencer G. LUCASMasaki MATSUKAWAJerald D. HARRIS
关键词:生物地层学四足动物白垩纪
华南泥盆纪遗迹化石及遗迹相被引量:8
2011年
通过对华南泥盆系6条剖面(四川北川甘溪、广西横县六景、广西桂林杨堤、贵州独山大河口-白虎坡、贵州贵阳乌当、四川广元后高坪)的遗迹沉积学系统研究,鉴定和描述遗迹化石15属24种,包括Arenicolites carbonaria,Arenicolites isp.,Chondrites cf.intricatus,Chondrites fenxiangensis,Chondrites filifalx,Chon-drites isp.,Chondrites maqianensis,Circulichnis isp.,Dushanichnus dahekouensis,Diplocraterion parallelum,Rusophy-cus lungmenshanensis,?Helminthopsis isp.,Palaeophycus tubularis,Palaeophycus curvatus,Phycodes palmatus,Planol-ites beverleyensis,Planolites isp.,Planolites kwangsiensis,Rosselia socialis,Rhizocorallium jenense,Rhizocorallium isp.,Skolithos linearis,Thalassinoides isp.,Zoophycos isp.。根据遗迹化石之间的共生组合关系、实体化石特征和其他相标志,识别出4种遗迹相:Skolithos,Rhizocorallium,Cruziana和Zoophycos遗迹相。Skolithos遗迹相主要发育于浪控型海岸体系、潮控型海岸体系和障壁岛-潟湖沉积体系的高能沉积区;Rhizocorallium遗迹相主要发育于潮控型海岸体系和障壁岛-潟湖沉积体系的低能沉积区;Cruziana遗迹相发育在浅海陆棚、具有丰富的生物及食物的砂泥岩和灰岩为主的低能沉积区;Zoophycos遗迹相沿泥岩和泥灰岩发育的滨外沉积区分布。华南泥盆纪遗迹相从早泥盆世到晚泥盆世的演替规律是从Skolithos遗迹相→Rhizocorallium遗迹相→Cruziana遗迹相→Zoophycos遗迹相→Rhizocorallium遗迹相。早泥盆世晚期以后华南泥盆纪同时期的遗迹相自西南向东北的空间变化规律则表现为Zoophycos遗迹相→Cruziana遗迹相→Rhizocorallium遗迹相→Skolithos遗迹相。
张立军龚一鸣马会珍
关键词:遗迹化石遗迹相泥盆纪古环境
华南泥盆纪Chondrites的特征及其对古氧相的示踪被引量:9
2010年
系统描述了发育于广西六景、贵州独山、贵阳乌当泥盆纪3个浅海沉积区Cruziana遗迹相Chondrites的产出特征,结合华南泥盆纪其他5个浅海沉积区Cruziana遗迹相的Chondrites资料,对Chondtites的寄主岩系颜色分级、遗迹组构、潜穴直径、遗迹属种的综合研究表明,只有寄主岩系为深灰色—黑色,岩性为灰岩、泥灰岩,潜穴直径小于1 mm,无其他遗迹化石共生时,Chondrites才是贫氧环境标志性遗迹化石的新认识,而个体粗大的Chondrites常发育在常氧环境中。
马会珍张立军龚一鸣
关键词:CHONDRITES泥盆纪
岐口凹陷新近系生物-遗迹相及环境解释被引量:1
2009年
岐口凹陷新近系包括明化镇组和馆陶组.通过新近系中的孢粉、介形虫和遗迹组构的系统研究,识别出孢粉53个属种,并建立了两个孢粉组合,分别为Magnastites(粗肋孢)-Ulmus(榆粉)-Taxodiaceaepollenites(杉粉)组合和Polygonaceae-Chenopodiaceae组合;发现介形虫12个属种,介形类以金星介科分子为主,少数湖花介科分子,以壳形单一、壳壁薄、表面光滑的类型为主,表现了典型的非海相淡水介形类面貌;划分出4种遗迹组构类型,分别为Scoyenia遗迹组构、Skolithos遗迹组构、Palaeophycus遗迹组构和强扰动组构.在此基础上,探索了生物与环境的关系,划分了A、B、C、D、E5种生物-遗迹相带,分别代表泛滥平原、蓄水注地或泛滥平原小型湖、河道及水下分流河道边部、滨浅湖和前三角洲沉积环境.
刘彦博严德天王华卢宗盛喻建新
关键词:生物相遗迹相生物标志物新近系
典型遗迹相及遗迹化石三维模型的设计与实现被引量:2
2007年
目前,三维可视化建模技术已被越来越多地应用到各个学科的研究中,在遗迹学方面亦不例外。文章通过3ds max三维建模软件对4个典型遗迹相的12种代表性遗迹化石分别进行了三维模拟,并以Dip- locraterion(双杯迹)为例给出了遗迹化石模型建立流程图以及最终的典型遗迹相及遗迹化石三维模型渲染图片。这将为遗迹学的理论与应用研究提供一种新的视角与方法,并为遗迹组构在油气储层孔隙度和渗透率的作用研究,提供高技术手段打下良好的基础。
胡斌曹斌牛永斌杨志强
关键词:遗迹相遗迹化石三维模型
遗迹相在边缘海相分析中的应用被引量:1
2000年
本质上 ,边缘海相储层是由一系列复杂排列的岩相所组成 ,代表几种亚环境结合部位的特征。在边缘海环境中 ,对应于相对海平面变化 ,关键的层序界面之上可被淡水、半咸水和纯海水 (沉积 )所覆盖。因此 ,在对这样的储层进行勘探和开发时 ,区分淡水、半咸水和纯海水沉积就显得格外重要。而遗迹化石组合有助于区分这些环境。总的来说 ,半咸水遗迹化石组合有如下特征 :①低分异度 ;②贫乏的海相组合 ,而不是海相和非海相的混合 ;③由机会物种形成的简单构造组成 ;④遗迹组合常以某个遗迹属为主 ;⑤形态微小 ;
S.G.PembertonT.D.A.SaundersM.K.Gingras张建平
关键词:遗迹相遗迹化石
西藏南部白垩系及下第三系的生物相及遗迹相被引量:8
1998年
西藏南部地区是我国海相白垩系—下第三系发育最好的地区之一,对这套地层的生物相和遗迹相研究,有助于了解印度板块和欧亚板块碰撞前这一地史时期该地区的沉积环境和古地理面貌。文章描述了5个生物相组合包括24个主要的生物相类型和4种主要的遗迹相(Nereites,Zoophycos,Cruziana和Skolithos遗迹相),其中Zoophycos遗迹相进一步划分出Thalassinoides-Planolites遗迹亚相和Zoophycos-Chondrites遗迹亚相,它们在剖面中交替出现,与原始沉积环境的含氧条件变化有关。
周志澄Helmut Wilems章炳高
关键词:生物相遗迹相沉积环境

相关作者

张立军
作品数:68被引量:175H指数:8
供职机构:河南理工大学资源环境学院
研究主题:遗迹化石 古环境 遗迹学 沉积环境 华南泥盆纪