Biostratigraphy of planktonic foraminifera from the South Atlantic Transect (International Ocean Discovery Program Expedition 390C)

南大西洋断面浮游有孔虫的生物地层学（国际海洋发现计划远征 390C）

基本信息

批准号：
NE/W00478X/1
负责人：
Bridget Wade
金额：
$ 2.57万
依托单位：
University College London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FW00478X%2F1
关键词：
Biostratigraphy planktonic foraminifera South Atlantic

项目摘要

Planktonic foraminifera are microscopic, single celled organisms which live in great abundance throughout the world oceans, being important part of the microplankton fauna. They make up their shells from calcium carbonate, which they obtain from the surrounding seawater. Evolution and extinction events of fossil planktonic foraminifera are extensively used to assess the age of the deep-sea sediments and to correlate sedimentary rock units when building reservoir models for oil and gas exploration. Analysis of chemical composition of planktonic foraminifera shells, also provide scientists with palaeoenvironmental information, which tells us about the past environments and help us to understand the nature of ancient climatic conditions on our planet.This particular study however, focuses predominantly on the age dating of sedimentary cores, which were recovered during preliminary drilling operations by the International Ocean Discovery Program Expedition 390C. We will use the fossils to date each sample and produce age models for the sites targeted for further drilling operations during joint IODP Expeditions 390 and 393, which are planned to go ahead in 2022. Additional observations of planktonic foraminifera abundances, assemblage composition and preservation, will allow us to assess research potential of the collected sample material. This will aid scientists participating in these future expeditions, to plan their research projects more effectively, in accordance with the expected sample material quality.

浮游有孔虫是微小的单细胞生物，大量生活在世界各地的海洋中，是微型浮游生物群的重要组成部分。它们用从周围海水中获取的碳酸钙制成贝壳。浮游有孔虫化石的演化和灭绝事件被广泛用于评估深海沉积物的年龄，并在构建石油和天然气勘探的储层模型时关联沉积岩单元。对浮游有孔虫贝壳的化学成分进行分析，还为科学家提供了古环境信息，这些信息告诉我们过去的环境，并帮助我们了解地球上古代气候条件的本质。然而，这项特殊的研究主要侧重于对有孔虫的年龄进行测定。沉积岩芯，由国际海洋发现计划 390C 号远征队在初步钻探作业中回收。我们将使用这些化石来确定每个样本的年代，并为 IODP 联合探险 390 和 393 期间进一步钻探作业的地点生成年龄模型，计划于 2022 年进行。对浮游有孔虫丰度、组合组成和保存的额外观察，将使我们能够评估所收集样本材料的研究潜力。这将帮助参与未来探险的科学家根据预期的样本材料质量更有效地规划他们的研究项目。