西班牙东南部Campo de Gibraltar杂岩渐新世/中新世深海Algeciras单元的Oldhamia:这一具有下古生代(主要是寒武纪)特征的鱼化石首次记录于较年轻地层

IF 0.8 4区 地球科学 Q4 PALEONTOLOGY
T. Mccann
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引用次数: 0

摘要

Oldhamia鱼化石被认为是深海寒武纪演替的特征。最近对西班牙西南部渐新世/中新世沉积序列的研究表明,在两个地层的底部(它们彼此靠近)存在保存完好的奥尔德哈米亚。Oldhamia与一系列其他鱼类化石有关联,包括Belorhaphe、Chondrites、Circulichnis、Cochlichnus、Cosmorhaphe、Desmograpton、Halopoa、Helminthopsis、Nereites、Palaeodictyon、Palaeophycus、Planolites、Protopalaeodictyon、Scolicia、Spirophycus、Teichichnus、Thalassinoides和Zoophycos。沉积发生在深海环境中的叶状或水道边缘环境。奥尔德哈米亚记录的范围扩展到古近系/新近系,因此具有重要的技术和技术地层意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Oldhamia from the Oligocene/Miocene-age deep-marine Algeciras Unit, Campo de Gibraltar Complex, southeast Spain: First record of this characteristic Lower Palaeozoic (mainly Cambrian) ichnofossil from younger strata
Abstract The ichnofossil Oldhamia is considered to be characteristic of deep-marine, Cambrian-age successions. Recent work from an Oligocene/Miocene-age sedimentary succession in the southwest of Spain revealed the presence of well-preserved Oldhamia at the base of two beds (which occur close to one another). Oldhamia was associated with a range of other ichnofossils including Belorhaphe, Chondrites, Circulichnis, Cochlichnus, Cosmorhaphe, Desmograpton, Halopoa, Helminthopsis, Nereites, Palaeodictyon, Palaeophycus, Planolites, Protopalaeodictyon, Scolicia, Spirophycus, Teichichnus, Thalassinoides, and Zoophycos. Deposition occurred in a lobe or channel margin environment in a deep-marine setting. This record of Oldhamia extends the range into the Paleogene/Neogene, and as such is of great ichnological and ichnostratigraphic significance.
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来源期刊
CiteScore
2.50
自引率
12.50%
发文量
0
审稿时长
>12 weeks
期刊介绍: The foremost aim of Ichnos is to promote excellence in ichnologic research. Primary emphases center upon the ethologic and ecologic significance of tracemaking organisms; organism-substrate interrelationships; and the role of biogenic processes in environmental reconstruction, sediment dynamics, sequence or event stratigraphy, biogeochemistry, and sedimentary diagenesis. Each contribution rests upon a firm taxonomic foundation, although papers dealing solely with systematics and nomenclature may have less priority than those dealing with conceptual and interpretive aspects of ichnology. Contributions from biologists and geologists are equally welcome. The format for Ichnos is designed to accommodate several types of manuscripts, including Research Articles (comprehensive articles dealing with original, fundamental research in ichnology), and Short Communications (short, succinct papers treating certain aspects of the history of ichnology, book reviews, news and notes, or invited comments dealing with current or contentious issues). The large page size and two-column format lend flexibility to the design of tables and illustrations. Thorough but timely reviews and rapid publication of manuscripts are integral parts of the process.
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