COLLABORATIVE RESEARCH: The Biostratigraphic Effects of Facies Control, Depositional Sequences, and Sampling Intensity: An Interactive Modeling and Field Approach
合作研究:相控制、沉积层序和采样强度的生物地层效应:交互式建模和现场方法
基本信息
- 批准号:9705829
- 负责人:
- 金额:$ 6.4万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:1997
- 资助国家:美国
- 起止时间:1997-08-15 至 2000-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
9705829 Patzkowsky The principal problem facing all biostratigraphic correlation methods is that first and last occurrences in local sections do not always reflect the true times of origination and extinction. Sampling, facies control, and sequence stratigraphic architecture all impose biases on local stratigraphic ranges. Many methods claim to account for these biases, but this claim has rarely been tested and the relative accuracy of different methods is poorly known. We propose to test three poplar biostratigraphic methods (traditional zonal biostratigraphy, dual biostratigraphy, and graphic correlation) to determine which is the most effective at dealing with the biased fossil record and to identify those factors that exert the strongest control on the accuracy of biostratigraphic correlation. We will approach this problem through a combined modeling and field study. Modeling will be used to test the relative accuracy of these three methods under a variety of sampling densities, levels of facies control, and sequence stratigraphic architectures. The advantage of modeling is that we will ultimately know the correct correlation, so we can objectively and quantitatively measure the accuracy of the various methods under different conditions. The techniques we develop here will allow many other types of biostratigraphic methods to be tested in the future. Armed with the knowledge gained from the modeling studies, we will evaluate a classic correlation problem with brachiopods in the Middle Ordovician of eastern Tennessee and southwestern Virginia. We will apply these same three biostratigraphic methods to the field data and compare the resulting correlations to the existing conodont-based stratigraphic framework. This study will lead not only to a general evaluation of the effects of sampling, facies control, and sequence stratigraphic architecture on three common biostratigraphic methods, but will also apply these results to develop a combined brachiopod-biozone and sequence strati graphic correlation framework to supplement existing conodont-based correlations in the Middle Ordovician of the Southern Appalachians. Because biostratigraphy is the principal means by which events are ordered throughout much of the stratigraphic record, the results of this study have broad implications for how Earth's history is reconstructed.
9705829 Patzkowsky 所有生物地层对比方法面临的主要问题是,局部剖面中的第一次和最后一次出现并不总是反映起源和灭绝的真实时间。 采样、相控制和层序地层结构都会对当地地层范围产生偏差。 许多方法声称可以解释这些偏差,但这种说法很少经过测试,而且不同方法的相对准确性也鲜为人知。 我们建议测试三种杨树生物地层学方法(传统地带性生物地层学、双重生物地层学和图形相关性),以确定哪种方法在处理有偏差的化石记录方面最有效,并确定对生物地层相关性的准确性发挥最强控制作用的因素。 我们将通过结合建模和现场研究来解决这个问题。 建模将用于测试这三种方法在各种采样密度、相控制水平和层序地层结构下的相对准确性。 建模的好处是我们最终会知道正确的相关性,因此我们可以客观、定量地衡量各种方法在不同条件下的准确性。 我们在这里开发的技术将允许在未来测试许多其他类型的生物地层学方法。 借助从建模研究中获得的知识,我们将评估田纳西州东部和弗吉尼亚州西南部中奥陶世腕足动物的经典相关问题。 我们将把这三种相同的生物地层学方法应用于现场数据,并将所得的相关性与现有的基于牙形刺的地层框架进行比较。 这项研究不仅将导致对采样、相控制和层序地层结构对三种常见生物地层学方法的影响进行总体评估,而且还将应用这些结果来开发组合的腕足生物带和层序地层图对比框架,以补充南阿巴拉契亚山脉中奥陶世现有基于牙形石的相关性。 由于生物地层学是在大部分地层记录中对事件进行排序的主要手段,因此这项研究的结果对于如何重建地球历史具有广泛的影响。
项目成果
期刊论文数量(0)
专著数量(0)
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会议论文数量(0)
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Mark Patzkowsky其他文献
Mark Patzkowsky的其他文献
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{{ truncateString('Mark Patzkowsky', 18)}}的其他基金
Collaborative Research: Conference: Stratigraphic Paleobiology Field Conference
合作研究:会议:地层古生物学现场会议
- 批准号:
2321173 - 财政年份:2024
- 资助金额:
$ 6.4万 - 项目类别:
Standard Grant
Late Ordovician Epeiric Sea Circulation, Environmental Change, and Biotic Turnover: Model and Data Synthesis
晚奥陶世表海环流、环境变化和生物周转:模型和数据综合
- 批准号:
0106737 - 财政年份:2001
- 资助金额:
$ 6.4万 - 项目类别:
Continuing Grant
COLLABORATIVE RESEARCH: Diversity Partitioning during a Marine Biotic Invasion: Middle and Late Ordovician, Cincinnati Arch and Nashville Dome
合作研究:海洋生物入侵期间的多样性划分:奥陶世中晚期、辛辛那提拱门和纳什维尔圆顶
- 批准号:
0087084 - 财政年份:2001
- 资助金额:
$ 6.4万 - 项目类别:
Standard Grant
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