(GRGC) Collaborative Research: A "Reference Section" at Cismon, Italy for the APTICORE Program

(GRGC) 合作研究：意大利 Cismon 的 APTICORE 计划的“参考部分”

• 批准号: 9405826
• 负责人: David Rea
• 金额: $ 2.95万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9405826&HistoricalAwards=false
• 关键词: GRGC; Collaborative; Research; Reference; Section

9405826 Opdyke This proposal coordinates the efforts of four American groups, in conjunction with Italian investigators, to core and analyze a 125 meter-long section of Aptian-Barremian age strata near Cismon, Italy. The core site has been selected to recover an expanded pelagic section recording a time of large-scale global change, namely the time of transition into the mid-Cretaceous "greenhouse" climate. The study is part of a large program called APTICORE, and will define a "reference section" for this major period of global climate change. The cores and logs will be studied by a team of investigators from the Universities of Florida, Michigan, Brown, and Rhode Island (who request support with this proposal) and the Universita de Milano, whose investigators are funded by the Consiglio Nazionale delle Ricerche. The Florida investigator will study the magnetostratigraphy and rock magnetic properties of the cored section to define the essential timeframe for other studies and to determine the magnetic mineralogy of the section. The Michigan investigators will study the carbon isotope stratigraphy (both as carbonate and organic carbon) and strontium isotope stratigraphy to determine the manner in which carbon is partitioned in the oceanic system during global climate change, and to determine the initial timing and relative magnitude of the volcanic pulse using Sr-isotopes as markers. The Brown investigator will study the cyclostratigraphy of the cored section by digital colorimetry and associated chemical analyses to determine the detailed sedimentary history of the section and the absolute time spans of the Selli Level "black shale" episode and various preceding magnetic chrons. The Rhode Island investigator will co-mange the field program and will study the chemostratigraphy and cyclostratigraphy of the section with chemical and microresistivity logs. He will determine the chemo-sedimentary history of the section and independently measure cyclosratigraphy with microresi stivity for time resolution studies as described above. The Universita di Milano investigators will define the biostratigraphy of the section, interpret the ecologic responses of the biota to climate change, and have responsibility for archiving and curation of the cores. It is expected that these studies will all compliment each other and be published in various joint formats in attempts to extract the causes and effects that link various geologic processes during a period of major global climate change.

9405826 Opdyke 这项建议协调了四个美国小组的努力，与意大利调查人员一起，对意大利西斯蒙附近一个125米长的阿普第阶-巴雷姆阶时代地层剖面进行了岩心取样和分析。 选择该核心地点是为了恢复扩大的远洋部分，记录大规模全球变化的时间，即过渡到白垩纪中期“温室”气候的时间。 这项研究是一个名为APTICORE的大型项目的一部分，将为这一全球气候变化的主要时期定义一个“参考部分”。 岩芯和测井记录将由来自佛罗里达大学、密歇根大学、布朗大学和罗得岛大学（他们请求支持这一建议）以及米兰大学的研究人员组成的研究小组进行研究，米兰大学的研究人员由Consiglio Nazionale delle Ricerche资助。 佛罗里达调查员将研究取芯剖面的磁性地层学和岩石磁性，以确定其他研究的基本时间框架，并确定该剖面的磁性矿物学。 密歇根大学的研究人员将研究碳同位素地层学（碳酸盐和有机碳）和锶同位素地层学，以确定在全球气候变化期间碳在海洋系统中的分配方式，并使用锶同位素作为标记来确定火山脉冲的初始时间和相对大小。 布朗调查员将通过数字比色法和相关化学分析研究取芯剖面的旋回地层学，以确定该剖面的详细沉积历史以及Selli Level“黑色页岩”幕和各种先前磁性年代的绝对时间跨度。 罗得岛调查员将共同管理现场项目，并将利用化学和微电阻率测井研究该剖面的化学地层学和旋回地层学。 他将确定该剖面的化学沉积史，并独立测量具有微电阻率的回旋谱，以进行上述时间分辨率研究。 米兰大学的研究人员将确定该部分的生物地层学，解释生物群对气候变化的生态响应，并负责对岩心进行存档和管理。 预计这些研究将相互补充，并以各种联合形式发表，以试图提取在重大全球气候变化期间各种地质过程之间的因果关系。