Construction of calibrated eustatic sea level curve: Mid-Jurassic through Mid-Cretaceous

校准海平面上升曲线的构建：中侏罗世至中白垩世

• 批准号: 9002728
• 负责人: Dork Sahagian
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1992-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9002728&HistoricalAwards=false
• 关键词: Construction; calibrated; eustatic; sea; level

The research program proposed here is based on the identification of a stable reference frame for measurement, and its utilization in the construction of a calibrated eustatic sea level curve for mid-Jurassic through mid-Tertiary. A stable frame is found in the Russian Platform on which flat-lying Mesozoic and Cenozoic marine sediments have remained undeformed since deposition. The elevation of these deposits is a measure of post-depositional sea level change, since factors such as compaction and loading are very small due to the thin nature of the deposits. As such, the Russian Platform acts as a meter stick, recording sea level through time. A sea level curve based on reliable tie points will be constructed and compared to sea level curves obtained by other means. Discrepancies will be reconciled in terms of measurement methods and mobile reference frames. In obtaining independent information regarding past sea levels, the results of this study will shed light on the passive margin processes of thermal subsidence and sedimentation, as well as the motions of active margins. As it stands now, sequence stratigraphic data must be used to infer thermal subsidence and sedimentation history, as well as sea level changes. A significant result of the proposed research project is that it will introduce another data set, so that the sea level signal can be filtered out, and sequence stratigraphic data can be used to measure thermal subsidence and sedimentation history directly. Research bears on issues of global sea level change.

这里提出的研究计划是基于 识别用于测量的稳定参考系，以及 它在建立一个校准的海平面中的应用 中侏罗世至中第三纪的水平曲线。 稳定的 在俄罗斯平台上发现了一个框架， 中、新生代海相沉积物保持未变形状态 从取证开始 这些矿床的高度是衡量 沉积后海平面的变化，因为因素， 压实和加载是非常小的，由于薄的性质， 存款。 因此，俄罗斯平台作为一个仪表， 棍子，记录随着时间的推移海平面。 基于可靠连接点的海平面曲线将 并与其他方法获得的海平面曲线进行比较 手段将在测量方面协调不一致性 方法和移动的参考帧。 在获得独立 关于过去海平面的信息，这项研究的结果 将阐明被动边际过程的热 沉降和沉积，以及活动 利润率 就目前而言，层序地层数据必须 用于推断热沉降和沉积历史， 海平面的变化。 拟议的一项重大成果是， 研究项目是，它将引入另一个数据集，所以 海平面信号可以被过滤掉， 地层数据可用于测量热沉降， 沉积历史直接。 研究涉及以下问题： 全球海平面变化。