Collaborative Research: Calibrating the Pace of Paleotropical Environmental and Ecological Change During Earth’s Previous Icehouse

合作研究：校准地球以前的冰库期间古热带环境和生态变化的步伐

• 批准号: 2219947
• 负责人: Randall Irmis
• 金额: $ 11.67万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2219947&HistoricalAwards=false
• 关键词: Collaborative; Research; Calibrating; Pace; Paleotropical

Sedimentary rocks in southeastern Utah are key to understanding dramatic climate change that occurred 304-280 million years ago during the transition from the Carboniferous to Permian periods (C–P). Cutler Group rocks have been geologically mapped for over 150 years, but their unique fossil assemblages—including charismatic sail-backed mammal ancestors (Dimetrodon) and the first large-bodied vertebrate herbivores (diadectids)—have only recently begun to be placed into a global context. This project will illuminate the fundamental climate processes that influenced terrestrial ecology in the western Pangean supercontinent, and provide new baselines for studying the impacts of climate change on terrestrial cold-blooded communities at low latitudes.Project goals combine paleontology, isotope geochemistry, and magnetostratigraphy: Aim 1: Identify the stratigraphic position of the C–P boundary and correlate the Cutler Group to the geologic timescale. Aim 2: Determine the pace and intensity of C–P climate drying in the region and its relationship to the Late Paleozoic Ice Age maximum. Aim 3: Elucidate the patterns and processes driving the evolution of paleoequatorial C–P vertebrate communities. Grant activities also support rural outreach with educational partners who largely serve native communities, including Whitehorse High School and the Friends of Cedar Mesa Bears Ears Education Center. The PIs will run a summer field experience with Jemez Pueblo students to learn about the geology of the Bears Ears region; conduct K–12 teacher workshops and community outreach events at community centers and libraries in San Juan County, Utah; and create a special exhibit and produce a video for the Bears Ears Education Center. The research will also be shared at the Natural History Museum of Utah’s ‘DinoFest’ and ‘Behind the Scenes’ in Salt Lake City, and at its sister ‘Dino Fest’ at the Natural History Museum of Los Angeles County.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

犹他州东南部的沉积岩石是了解从石炭纪到二叠纪（C – P）过渡期间304-2.8亿年前发生的急剧气候变化的关键。卡特勒集团的岩石在地质上进行了150多年的映射，但是它们独特的化石组合包括具有魅力的帆型哺乳动物祖先（Dimetrodon）和第一个大型脊椎动物食草动物（Diadectids） - 最近才开始将其置于全球环境中。 This project will illuminate the fundamental climate processes that affected terrestrial ecology in the western Pangean supercontinent, and provide new baselines for studying the impacts of climate change on terrestrial cold-blooded communities at low latitudes.Project goals combine paleontology, isotope geochemistry, and magnetostratography: Aim 1: Identify the stratigraphic position of the C–P boundary and correlate the Cutler Group to the地质时间尺度。目标2：确定该地区C – P气候干燥的速度和强度及其与晚期古生代冰河时代最大的关系。 AIM 3：阐明驱动古赤道C -P脊椎动物群落进化的模式和过程。 Grant活动还支持与教育合作伙伴进行的粗暴宣传，这些教育伙伴在很大程度上为当地社区提供服务，包括Whitehorse高中和Cedar Mesa Bears Ears教育中心的朋友。 PIS将与Jemez Pueblo学生一起经营夏季野外体验，以了解熊耳朵地区的地质；在犹他州圣胡安县的社区中心和图书馆进行K -12的教师讲习班和社区外展活动；并创建一个特别的展览，并为熊耳朵教育中心制作视频。这项研究还将在犹他州自然历史博物馆的“恐龙”和盐湖城的“幕后”，以及洛杉矶县自然历史博物馆的姐妹“ Dino Fest”上分享。这项奖项反映了NSF的法定任务，并通过评估该基金会的知识分子和广泛的影响来评估NSF的法定任务。