US-Turkey Cooperative Research: Hydrothermal Alteration and Genesis of Halloysite Deposits Along the Active Southern Segments of North Anatolian Fault Zone, NW Turkey

美国-土耳其合作研究：土耳其西北部北安纳托利亚断裂带活动南段沿线埃洛石矿床的热液蚀变和成因

• 批准号: 0138023
• 负责人: Paul Schroeder
• 金额: $ 2.7万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-05-01 至 2005-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0138023&HistoricalAwards=false
• 关键词: US; Turkey; Cooperative; Research; Hydrothermal

0138023SchroederDescription: This award is for support of a cooperative project by Dr. Paul Schroeder, Department of Geology at the University of Georgia (UGA), Athens, Georgia and Dr. O. Isik Ece of the Geological Sciences Department of Istanbul Technical University (ITU) in Istanbul, Turkey. Tectonic evolution of North Anatolian Fault zone and Neo-Tethys suture belts from Aegean Sea to Western Anatolia and the recent discovery of kaolin deposits within these tectonic belts have become a new focus of earth scientists in assessing resources in the global clay industry and the magnitude of silicate alteration effects on global climate change. The purpose of this joint research is to determine (1) the alteration mechanism of volcanic rocks to kaolin group minerals, and estimate its role in the mass-balance of global element cycles, (2) the distribution of parent, secondary and tertiary minerals in order to estimate the extent of hydrothermal alteration zones, and (3) to verify alteration stages and physico-chemical conditions of volcanic tuffs by geochemical analysis of the waters. The area selected for field research in Turkey has unique features of mineral occurrences and hydrothermal alterations associated with branches of major active North Anatolian Fault system. Scope: The field setting is particularly suitable to examine the full range of geochemical and sedimentological conditions leading to the formation of economically viable deposits. Because Turkey is on one of the most active fault zones, it provides an ideal setting to study hydrothermal alteration of primary (and formation of industrial secondary) clay minerals. The project will shed new light on fossil hydrothermal systems and on the occurrence of high quality industrial phyllosilicates from the point of view of physical features and crystal chemistry. There is a possibility for the discovery of halloysite deposits that could serve the ceramic markets. This study could provide mineralogical and geochemical information that can be utilized in understanding the genesis of other kaolinite and halloysite occurrences. Turkish scientists will utilize the X-ray diffraction, transmission electron microscope and stable isotope facilities at UGA. Geology students from UGA will gain valuable field experience and will benefit from the international collaboration. The project meets INT criteria for support of cooperative projects that are mutually beneficial.

0138023 Schroeder描述：该奖项是为了支持格鲁吉亚雅典格鲁吉亚大学（UGA）地质系的Paul Schroeder博士和O.位于土耳其伊斯坦布尔的伊斯坦布尔技术大学地质科学系的Isik Ece说。 北安纳托利亚断裂带和从爱琴海到西安纳托利亚的新特提斯缝合带的构造演化以及最近在这些构造带中发现的高岭土矿床已成为地球科学家评估全球粘土工业资源和硅酸盐蚀变对全球气候变化影响程度的新焦点。本次联合研究的目的是确定（1）火山岩对高岭土族矿物的蚀变机制，并估计其在全球元素循环质量平衡中的作用;（2）母矿物、次生矿物和第三纪矿物的分布，以估计热液蚀变带的范围;（3）通过对沃茨的地球化学分析，验证火山凝灰岩的蚀变期次和物理化学条件。在土耳其选定进行实地研究的地区具有独特的矿点和热液蚀变特征，与主要的活跃的北安纳托利亚断层系统的分支有关。适用范围：野外环境特别适合于研究导致经济上可行的矿床形成的各种地球化学和沉积学条件。 由于土耳其位于最活跃的断层带之一，因此它为研究原生粘土矿物的热液蚀变（以及工业次生粘土矿物的形成）提供了理想的环境。该项目将从物理特征和晶体化学的角度对化石热液系统和高质量工业层状硅酸盐的出现提供新的认识。 有可能发现埃洛石矿床，可以服务于陶瓷市场。这项研究可以提供矿物学和地球化学信息，可用于了解其他高岭石和埃洛石的成因。 土耳其科学家将利用UGA的X射线衍射，透射电子显微镜和稳定同位素设施。 从UGA地质学的学生将获得宝贵的实地经验，并将从国际合作中受益。 该项目符合INT支持互利合作项目的标准。