IRES: Landscapes of Deep Time in the Red Earth of France: Research Training in Paleoclimate

IRES：法国红土深处的时间景观：古气候研究培训

• 批准号: 1658614
• 负责人: Gerilyn Soreghan
• 金额: $ 25万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2022-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1658614&HistoricalAwards=false
• 关键词: IRES; Landscapes; Deep; Time; Red

This project will evaluate sediments deposited 300-million years ago in France at a time of abundant ice on the planet. This project will engage several teams of undergraduates from underserved populations - particularly indigenous peoples of the Plains and Southwest states - in scientific research within a culturally sensitive context. A total of 13 students will travel to France over three years to conduct field and lab work on red sediments analogous to the types of sediments and landscapes familiar to them in the U.S. They will work with both U.S. and French scientists in collecting data in both the field and the laboratory, while also learning about the history and culture of a part of France with a geologic history analogous to that of their homeland. This project will further our understanding of how Earth's surface conditions can behave under conditions analogous to the present. This IRES project will involve three student groups per year undertaking fieldwork in France. Students will test the hypothesis that Carboniferous-Permian strata of basins preserved near the Central Pangaean Mountains (France) archive a record of moderate-elevation glaciation and widespread loess deposits in the paleo-tropics. One PhD student and 4 undergraduates per year will participate in this project, and students from underserved groups, particularly indigenous peoples of the Plains and Southwest states, will be encouraged to participate. These students will conduct fieldwork to document facies attributes, including detailed grain-size analyses, quartz microtextural, geochemical, and geochronological analyses in discrete projects that when merged will test the overarching hypothesis. The proposed research will contribute to the experience base and expertise in sedimentologic/geochemical/geochronological analyses for all participants, while developing datasets and results that will be disseminated largely by student participants. Students from the Native populations will be drawn into a foreign experience that will widen their horizons, yet simultaneously demonstrate a place-based learning wherein stories of past climates are teased from studies of the land. Results will provide important constraints on paleoclimate of tropical eastern Pangaea. Support of the hypothesis would require a large shift in long-accepted reconstructions of climate in eastern Pangaea, whereas a failure of the hypothesis will require renewed efforts to understand meridional climate states across central Pangaea. The Late Paleozoic Ice Age is Earth?s most recent pre-Quaternary glaciation, and thus a common target for climate modelers, using the same models as those employed for climate prediction. Hence, calibrations to these models are critical for understanding broader aspects of Earth's climate system in both deep- and near-time intervals. In summary, the intellectual merit of this project lies in testing hypotheses of Earth?s deep-time climate behavior in order to refine our knowledge of Earth's climate system, including future states. The broader impacts include providing students of underserved populations research opportunities that will help cultivate interest in science and forge new international collaborations.

该项目将评估3亿年前在法国沉积的沉积物，当时地球上有大量的冰。该项目将吸引来自服务不足人口的几个本科生团队-特别是平原和西南各州的土著人民-在文化敏感的背景下进行科学研究。共有13名学生将前往法国，在三年内对红色沉积物进行实地和实验室工作，这些红色沉积物类似于他们在美国熟悉的沉积物和景观类型。同时也了解法国一个地区的历史和文化，该地区的地质历史与他们的祖国相似。这个项目将进一步加深我们对地球表面条件在类似于现在的条件下如何表现的理解。这个IRES项目每年将有三个学生小组在法国进行实地考察。学生将测试的假设，即石炭纪-二叠纪地层保存在中央盘古山脉（法国）附近的盆地存档中海拔冰川作用和广泛的黄土沉积在古热带地区的记录。每年将有一名博士生和4名本科生参加这一项目，并鼓励来自服务不足群体的学生，特别是平原和西南各州的土著人民参加。这些学生将进行实地考察，以记录相属性，包括详细的粒度分析，石英显微结构，地球化学和地质年代学分析在离散的项目，当合并将测试总体假设。拟议的研究将有助于所有参与者积累沉积学/地球化学/地质年代学分析方面的经验基础和专门知识，同时开发数据集和成果，主要由学生参与者传播。来自原住民的学生将被吸引到一个外国的经验，这将扩大他们的视野，但同时展示了一个基于地方的学习，其中过去的气候故事是从土地的研究取笑。研究结果将为热带东盘古大陆的古气候研究提供重要的制约因素。支持这一假设需要在长期接受的东泛古陆气候重建的大转变，而假设的失败将需要重新努力了解泛古陆中部的纬向气候状态。晚古生代冰河时代是地球吗？的最近的前第四纪冰川，因此，气候建模的共同目标，使用相同的模式，用于气候预测。因此，对这些模型的校准对于了解地球气候系统在深时间间隔和近时间间隔的更广泛方面至关重要。总之，这个项目的智力价值在于测试地球的假设？的深时间气候行为，以完善我们的地球气候系统的知识，包括未来的状态。 更广泛的影响包括为服务不足人口的学生提供研究机会，这将有助于培养对科学的兴趣并建立新的国际合作。

项目成果

Rock Magnetic Cyclostratigraphy of Permian Loess in Eastern Equatorial Pangea (Salagou Formation, South-Central France)

• DOI: 10.3389/feart.2020.00241
• 发表时间: 2020-06
• 作者: Lily S. Pfeifer;L. Hinnov;C. Zeeden;C. Rolf;Christian Laag;G. Soreghan

Loess in the Lodeve? Exploring the depositional character of the Permian Salagou Formation, Lodeve Basin (France).

洛德沃的黄土？

• DOI: 10.1130/abs/2018am-317628
• 发表时间: 2018
• 期刊: Geological Society of America Abstracts with Programs
• 作者: Pfeifer, Lily S.

Activation of the Multicontext model in a field-based program for traditionally underserved students

在针对传统上服务不足的学生的实地项目中激活多情境模型

• DOI: 10.1080/10899995.2020.1838850
• 发表时间: 2021
• 期刊: Journal of Geoscience Education
• 作者: Pfeifer, Lily S.;Soreghan, Michael J.;Feille, Kelly K.;Soreghan, Gerilyn S.;Weissmann, Gary S.;Ibarra, Robert A.;Stroud, Wesley A.
• 通讯作者: Stroud, Wesley A.

HYPOTHESIZED FREEZING IN LOW-LATITUDE LAKES OF THE EARLY PERMIAN: EXAMPLES FROM THE USCLAS FORMATION, GRAISSESSAC-LODEVE BASIN, FRANCE

早二叠纪低纬度湖泊假想的结冰：来自法国 GRAISSESSAC-LODEVE 盆地 USCLAS 地层的例子

• DOI: 10.1130/abs/2020sc-342555
• 发表时间: 2020
• 期刊: Geological Society of America Abstracts with Programs
• 作者: Birkett, Brooke A.;Pfeifer, Lily S.;Pochat, Stephane;Van Den Driessche, Jean;Soreghan, Gerilyn S.;Soreghan, Michael J.
• 通讯作者: Soreghan, Michael J.

Paleoclimatic significance of Permian loess and dust in Variscan basins of eastern equatorial Pangaea

赤道盘古大陆东部瓦里斯盆地二叠纪黄土和尘埃的古气候意义

• 发表时间: 2020
• 期刊: American Geophysical Union
• 作者: Pfeifer, L.S.;Soreghan, G.S.;Hinnov, L.;Pochat, S.
• 通讯作者: Pochat, S.