雅卡盆地(比利牛斯山南部)中始新世萨比尼尼戈砂岩层中的化石:生物地层学和古环境意义

IF 5.4 3区 材料科学 Q2 CHEMISTRY, PHYSICAL
Elizabeth R. Lasluisa, O. Oms, E. Remacha, A. González-Lanchas, Hug Blanchar-Roca, J. Flores
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引用次数: 0

摘要

摘要本研究首次提供了有关雅卡盆地(比利牛斯山脉中南部)萨比尼戈砂岩层钙质化石组合的详细数据。该地层主要由三角洲和外海沉积物组成。这些硅质碎屑沉积物中的化石组合保存得很好,尤其是在细粒层中。其中的钙质化石主要是 Cyclicargolithus floridanus、Coccolithus pelagicus、Coccolithus formosus、Clausicoccus fenestratus、Zygrhablithus bijugatus 以及 Sphenolithus 和 Chiasmolithus 的几个种类。生物地层学的研究结果有助于根据全球地层尺度确定中始新世生物群的特征,并改进该盆地沉积物的时间相关性和横向演化。Sabiñánigo 砂岩的沉积序列沉积于中始新世,介于 NP16 生物区上部和 NP17 生物区底部之间的巴顿期。钙质浮游动物群表明,在雅卡盆地的巴顿期,地表水温暖而寡营养。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nannofossils from the Middle Eocene Sabiñánigo Sandstone Formation in the Jaca Basin (southern Pyrenees): biostratigraphy and paleoenvironmental implications
Abstract. This study presents the first detailed data on calcareous nannofossil assemblages from the Sabiñánigo Sandstone Formation in the Jaca Basin (central south Pyrenees). This formation is mainly composed of deltaic and outer-shelf sediments. These siliciclastic deposits contain nannofossil assemblages that are moderately to well-preserved, particularly in fine-grained levels. They contain a calcareous nannofossil assemblage dominated by the species Cyclicargolithus floridanus, Coccolithus pelagicus, Coccolithus formosus, Clausicoccus fenestratus, Zygrhablithus bijugatus, and several species of Sphenolithus and Chiasmolithus. The biostratigraphic results enabled the characterization of the Middle Eocene biohorizons, based on global stratigraphic scales and the improvement of the temporal correlation and lateral evolution of this basin's deposits. The sedimentary sequence of the Sabiñánigo Sandstone was deposited during the Middle Eocene, between the upper part of biozone NP16 and the base of NP17, in the Bartonian. The calcareous nannoplankton assemblage suggests warm and oligotrophic surface waters for the Bartonian interval in the Jaca Basin.
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来源期刊
ACS Applied Energy Materials
ACS Applied Energy Materials Materials Science-Materials Chemistry
CiteScore
10.30
自引率
6.20%
发文量
1368
期刊介绍: ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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