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

该提案协调了四个美国小组与意大利调查人员的努力，对意大利Cismon附近的Aptian-Barremian时代地层进行了125米长的取样和分析。选择该核心地点是为了恢复一个扩大的远洋剖面，记录了一个大规模的全球变化时期，即向白垩纪中期“温室”气候过渡的时间。这项研究是一个名为APTICORE的大型项目的一部分，它将为全球气候变化的这一重要时期定义一个“参考部分”。岩心和测井资料将由来自佛罗里达、密歇根、布朗和罗德岛大学（他们要求对该提案提供支持）和米兰大学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。佛罗里达的研究人员将研究岩心部分的磁地层学和岩石磁性，以确定其他研究的基本时间框架，并确定该部分的磁矿物学。密歇根大学的研究人员将研究碳同位素地层学（包括碳酸盐和有机碳）和锶同位素地层学，以确定全球气候变化期间碳在海洋系统中的分配方式，并利用sr同位素作为标记确定火山脉冲的初始时间和相对强度。布朗大学的研究人员将通过数字比色法和相关的化学分析来研究岩心剖面的旋回地层学，以确定该剖面的详细沉积历史和塞利水平“黑色页岩”时期的绝对时间跨度以及之前的各种磁年代学。罗德岛的研究人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-沉积历史，并独立测量具有微电阻率的环地层，用于上述时间分辨率研究。米兰大学的研究人员将定义该剖面的生物地层学，解释生物群对气候变化的生态反应，并负责存档和管理岩心。预期这些研究将相互补充，并以各种联合形式发表，以期在重大全球气候变化期间找出各种地质过程之间的因果关系。

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.