US Egypt Cooperative Research: Comparisons between New Mexico and Egyptian travertines and tufas and their implications for paleoclimate and neotectonic influences on ground water

这个美国和埃及的合作项目是对埃及北部努比亚沙漠的泉口、地下水和导线与新墨西哥州格兰德裂谷的类似泉水进行的比较研究。由新墨西哥大学的卡尔·卡尔斯特罗姆博士领导的美国团队将与埃及苏伊士运河大学的埃及科学家穆斯塔法·塞尔米博士建立新的合作关系。该项目为美国团队提供了进入一个新的干旱地区的途径，并将使他们能够扩大他们对深层来源流体对地下水质量有害影响的研究。这一合作项目对埃及、美国西部和其他人口增长对水资源造成压力的干旱地区的水资源管理具有直接的社会意义。智力上的优点。研究小组将绘制和采样钙华沉积泉水，因为它们是断层控制的管道系统的地表记录，这些系统往往会划分含水层盆地。这些泉水与最高值的内生流体成分(高盐分、3He/4He、CO2和金属)有关，因此对于了解参与地下水混合的内生内生成分具有重要意义。利用精确的铀系列年代学，石灰华本身也提供了这些重要地区古水文的可测年记录。美国西部和澳大利亚正在进行的研究为解决公众对如何保护和管理多年生泉口以及保护其微妙平衡的生态系统(包括特有物种和独特微生物)的关切提供了重要数据。术语“喷口”被用在字面上的意义上，因为PI的总体模型是，这些系统是大陆上类似于海洋裂谷环境中发现的黑白相间的烟民。对埃及-美国合资企业的支持将使该团队能够扩展并更好地测试该模型，并让两名研究生参与国际研究体验。美国PIS将与苏伊士运河大学合作，通过两个计划在埃及举行的由苏伊士运河大学主办的研讨会，帮助建立埃及和国际合作。工作计划将遵循Crossey等人2006年和2009年的方法，绘制努比亚沙漠许多石灰华沉积泉水和天然气的地图并进行采样，分析水化学以解析二氧化碳来源，并分析气体化学(包括惰性气体)以评估地幔和地壳深处衍生的流体混合到地下水系统中的百分比。该项目在了解构造和内生因素对地下水质量的影响之间的联系方面具有内在的科学意义。它在地下水供应管理、初级科学家培训和国际合作方面产生了更广泛的影响。

This US-Egypt collaborative project is a comparative study between spring vents, groundwaters, and travertines in the Nubian Desert of northern Egypt and similar springs in the Rio Grande rift of New Mexico. The US team, lead by Dr. Karl Karlstrom at the University of New Mexico will establish a new collaboration with Egyptian scientist Dr. Moustafa Selmi at Suez Canal University in Egypt. This project provides the US team access to a new arid field site and will enable them to expand their study of the detrimental effects of deeply sourced fluids on groundwater quality. This collaborative project has direct societal relevance for the management of water resources in Egypt, the western US, and other arid regions where population growth places a strain on water resources. Intellectual merit. The research team will map and sample travertine-depositing springs because they are the surface record of fault-controlled conduit systems that tend to partition aquifer basins. These springs are associated with the highest values of endogenic fluid components (high in salts, 3He/4He, CO2, and metals) and hence of importance for understanding the endogenic endmember involved in groundwater mixing. The travertine itself also provides a datable record, using precise uranium-series geochronology, of the paleohydrology of these important regions. Ongoing studies in the western US and Australia have provided important data in addressing public concerns about how to protect and manage perennial spring vents, and protect their delicately balanced ecosystems, which include endemic species and unique microbiology. The term "vents" is used in a very literal sense as the PIs' overarching model is that these systems are continental analogs to the black and white smokers found in oceanic rift environments.Broader impacts. Support for this joint Egypt-U.S. venture will allow the team to extend and better test the model and to engage two graduate students in an international research experience. The US PIs will work together with the University of Suez Canal to help build Egyptian and international collaboration through two planned workshops to be held in Egypt and hosted by the University of Suez Canal. The work plan will follow methods of Crossey et al., 2006; 2009, to map and sample water and gas from many of the travertine-depositing springs in the Nubian Desert, analyze water chemistry to parse out CO2 sources and analyze gas chemistry (including noble gases) to evaluate percentages of mantle and deep crustal-derived fluids mixing into the groundwater system. This project has intrinsic scientific interest in terms of understanding links between tectonics and endogenic influences on groundwater quality. It has broader impacts in terms of management of groundwater supply, training of junior scientists, and international cooperation.