CAREER: Exploring the Geologic Record of Major Climate Transitions

该职业奖将支持旨在(1)提高对地球走出晚古生代冰期(LPIA)的过渡的了解和(2)向公众宣传地球系统历史的意义的研究和教育活动。研究活动将整合对早二叠世海相碳酸盐沉积的沉积学、岩石学和稳定同位素研究，以提高对地球从深层冰库过渡到长期温室气候模式所伴随的气候、海洋和生态变化的理解。该项目将建立在澳大利亚东部晚古生代地层正在进行的合作工作的基础上，该工作已经形成了一个与冰川直接相关的年代地层框架。重点将放在开发碳和氧同位素剖面上，这将有助于确定沿古纬度样带海平面、气候和海洋变化的相对时间和特征。教育活动将围绕每年一度的面向实地的暑期课程--《岩石历史》，为高中教师和9-10年级的学生设计。该课程将关注气候变化和地球历史上的灾难，内布拉斯加州的一系列世界级地质现场就是例证。该项目将产生最多四篇研究生水平的论文和四篇本科高级论文。由于该项目综合了野外和实验室的组成部分，学生将积累广泛的沉积学、地层学和地球化学方面的经验和培训。除了研究，UNL的学生还将被期望在后勤和教育方面帮助《岩石历史》。他们还将根据联合国国家博物馆一年一度的家庭日的研究结果，帮助开发一项展示和动手活动。这些活动将为UNL的学生提供教授科学和向公众交流研究成果的宝贵经验。“岩石上的历史”将直接影响来自内布拉斯加州的15名高中理科教师和45名9-10年级的学生，并间接影响更多的人。该课程将针对特定的受众开设四次。两个会议将迎合历史上在地球科学中代表性不足的群体：女性和美洲原住民。通过采用科学方法的活动，参与者将获得对科学方法、地球科学专业和地球科学研究的社会意义的欣赏。

This CAREER award will support research and education activities designed to (1) improve understanding of Earth's transition out of the late Paleozoic ice age (LPIA) and (2) communicate the significance of Earth systems history to the general public. Research activities will integrate sedimentological, petrographic, and stable isotopic investigations of Early Permian marine carbonate deposits to improve understanding of the climatic, oceanographic, and ecological changes that accompanied Earth's transition from a deep icehouse to a prolonged greenhouse climate mode. The project will build upon ongoing collaborative work on late Paleozoic strata of eastern Australia, which has resulted in a chronostratigraphic framework tied directly to glaciation. Emphasis will be placed on developing carbon and oxygen isotope profiles that will help to establish the relative timing and character of changes in sea level, climate, and oceanography along a paleolatitudinal transect. Education activities will center around an annual, field-oriented summer course, "History on the Rocks," designed for high school teachers and 9th-10th grade students. The course will focus on climate change and catastrophes in Earth history, as illustrated by a series of world-class geological field sites in Nebraska. The project will result in up to four graduate-level and four undergraduate senior theses. Because the project integrates field and laboratory components, students will amass a broad range of experiences and training in sedimentology, stratigraphy, and geochemistry. In addition to research, UNL students will be expected to help with logistical and educational aspects of "History on the Rocks." They will also help to develop a display and hands-on activity based on research results for an annual family day at the UN State Museum. These activities will provide the UNL students with valuable experience in teaching science and communicating research results to the public. "History on the Rocks" will directly impact up to 15 high school science teachers and 45 9th-10th grade students from across Nebraska, and indirectly affect many more. The course will be offered four times for specific audiences. Two sessions will cater to groups historically under-represented in the geosciences: females and Native Americans. Through activities that incorporate a scientific approach, participants will gain an appreciation of the scientific method, the geoscience profession, and the societal significance of geoscience research.