High-Frequency Sea Level Changes and Paleoceanography of the Cenomanian-Turonian Greenhorn Sea

塞诺曼阶-土伦阶新手海的高频海平面变化和古海洋学

• 批准号: 9219113
• 负责人: R Leckie
• 金额: $ 7.3万
• 依托单位: University of Massachusetts Amherst
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1996-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9219113&HistoricalAwards=false
• 关键词: Frequency; Sea; Level; Changes; Paleoceanography

PIs will conduct an interdisciplinary investigation, employing sedimentology, stratigraphy, paleontology, paleoecology, and geochemistry, all designed to determine the causes and effects of high-frequency sea-level changes in the Cenomanian-Turonian Western Interior Seaway of North America. Objectives are: 1) to confirm hypothesis that parasequences in the fine-grained, offshore facies record processes of at least regional extent, 2) to determine how spatial changes in accommodation space and rate of sediment influx influenced development of sequences and parasequences during high-frequency relative sea-level changes, 3) to evaluate how, and by what mechanisms, benthic oxygenation levels at offshore sites varied in concert with high- frequency sea-level changes, and 4) to determine how water column characteristics varied over the course of such changes.

pi将进行跨学科的调查，运用沉积学、地层学、古生物学、古生态学和地球化学，所有这些都是为了确定北美塞诺曼尼亚-土伦尼亚西部内陆海道高频海平面变化的原因和影响。目标是:1)确认细粒、近海相的副层序记录了至少区域范围的过程的假设；2)确定在高频相对海平面变化期间，可容纳空间和沉积物流入速度的空间变化如何影响层序和副层序的发育；3)评估如何以及通过何种机制，在近海地点底栖动物氧合水平随海平面的高频变化而变化，以及4)确定水柱特征在这种变化过程中如何变化。