不列颠群岛利物浦湾(Bae Lerpwl)晚全新世有孔虫:形态、物种和群落水平模式

IF 0.9 4区 地球科学 Q4 PALEONTOLOGY Journal of Foraminiferal Research Pub Date : 2023-07-01 DOI:10.2113/gsjfr.53.3.226
B. Wilson, L. Hayek
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引用次数: 0

摘要

研究了利物浦湾(~ 40米水深)的两个岩心。ISLF13最低80 cm(长290 cm)由粘土、石膏和黄铁矿化有孔虫组成(表层2段,石膏质岩相GLF),这些有孔虫来自以Cribroelphidium excavatum为主的潮滩。扰动检测分析(PDA)发现两个ISLF13 GLF丰度生物带(ABs)的组合处于停滞状态。ISLF16(长80 cm)和ISLF13(长30 ~ 202 cm)为开阔海相,含腹足类和双壳类动物(表层一段,壳壳砂岩相SSLF)。尽管SSLF段中的汇编很接近,但它们的分布却不同。在ISLF13中,以大叶蛾为主,小叶蛾为主,小叶蛾为主,小叶蛾为主,小叶蛾为主,小叶蛾为主。PDA鉴定出两种ISLF13 SSLF抗体,均处于生长阶段。ISLF16组合由C. excavatum、a . mamilla和a . batava共同主导。这种差异可能反映了排序。描述了一种名为Asterigerinata murraynhaynesi的植物。
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The Later Holocene Foraminifera of Liverpool Bay (Bae Lerpwl), British Isles: Morphospecies and Community Level Patterns
Two cores were studied from Liverpool Bay (∼40 m water depth). The lowest 80 cm of ISLF13 (290 cm long) comprised clay, gypsum and pyritised foraminifera (Surface Layer 2 Member, gypsiferous lithofacies GLF) from a tidal flat dominated by Cribroelphidium excavatum. Perturbation Detection Analysis (PDA) found two ISLF13 GLF abundance biozones (ABs) with assemblages in stasis. ISLF16 (80 cm long) and between 30–202 cm in ISLF13 were open marine, sandy with gastropods and bivalves (Surface Layer 1 Member, shelly sand lithofacies SSLF). Assemblages in the SSLF sections differed, despite their proximity. That in ISLF13 comprised dominant C. excavatum with lesser Ammonia batava, Asterigerinata mamilla, Cibicides refulgens and Bulimina elongata. PDA identified two ISLF13 SSLF ABs, both in growth stages. The ISLF16 assemblage was co-dominated by C. excavatum, A. mamilla and A. batava from a single AB in stasis. This difference might reflect sorting. Asterigerinata murraynhaynesi n. sp. is described.
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来源期刊
Journal of Foraminiferal Research
Journal of Foraminiferal Research 地学-古生物学
CiteScore
2.10
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: JFR publishes original papers of international interest dealing with the Foraminifera and allied groups of organisms. Review articles are encouraged.
期刊最新文献
2023 Cushman Foundation for Foraminiferal Research Award and Grant Recipients The Later Holocene Foraminifera of Liverpool Bay (Bae Lerpwl), British Isles: Morphospecies and Community Level Patterns Micro- to Macro-Scale Foraminiferal Distributions: The Contributions of Martin A. Buzas* Oceanic-Scale Species Diversity of Living Benthic Foraminifera: Insights into Neogene Diversity, Community Structure, Species Duration, and Biogeography Benthic Foraminiferal Response to the Aptian−Albian Carbon Cycle Perturbation in the Atlantic Ocean
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