Expanding Capabilities for the University of Arizona Paleomagnetics Laboratory

扩大亚利桑那大学古磁学实验室的能力

• 批准号: 0105226
• 负责人: Robert Butler
• 金额: $ 5.18万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-08-01 至 2003-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105226&HistoricalAwards=false
• 关键词: Expanding; Capabilities; University; Arizona; Paleomagnetics

0105226ButlerThe Paleomagnetics Laboratory at the University of Arizona is an experimental facility utilized for a wide variety of geological projects. The Paleomagnetics Laboratory Director and PI on this project, is currently collaborating with geologists on research projects in: (a) southeast Alaska; (b) the Bolivian Andes; (c) the Pyrenees of Spain; (d) Nepal; (e) Ethiopia; and (f) northern Tibet. Funds from this grant will provide partial support for three equipment needs:(1) The primary instrument used to measure paleomagnetism is a superconducting rock magnetometer (SRM) that uses a refrigeration system to maintain low temperatures of the cryogenic components. This refrigeration system requires periodic replacement which will be accomplished early in the grant period.(2) A common method of analyzing the magnetism of rock samples is thermal demagnetization in which samples are heated to progressively higher temperatures in a low magnetic field environment. To increase capacity for processing samples in the laboratory, we will construct three additional thermal demagnetization furnaces. (3) In paleomagnetic research, it is important to identify and characterize the iron-bearing minerals that carry magnetic signals. We will purchase and install a Kappabridge susceptometer for measurements of magnetic susceptibility versus temperature and anisotropy of magnetic susceptibility. The resulting data will provide rapid and detailed information permitting identification and characterization of ferrimagnetic minerals.Purchase and/or construction of these instrumentation items will permit The Paleomagnetics Laboratory at the University of Arizona to expand productivity and advance the experimental capabilities of this facility. ***

0105226巴特勒亚利桑那大学古地磁学实验室是一个实验设施，用于各种各样的地质项目。 古地磁学实验室主任和该项目的主要参与者目前正在与地质学家合作，在以下地区开展研究项目：（a）阿拉斯加东南部;（B）玻利维亚安第斯山脉;（c）西班牙比利牛斯山脉;（d）尼泊尔;（e）埃塞俄比亚;（f）西藏北方。 这笔赠款的资金将为三项设备需求提供部分支持：（1）用于测量古地磁的主要仪器是超导岩石磁力计（SRM），该仪器使用制冷系统来保持低温部件的低温。 这一制冷系统需要定期更换，更换工作将在赠款期初期完成。(2)分析岩石样品磁性的常用方法是热退磁，其中样品在低磁场环境中被加热到逐渐升高的温度。 为了增加实验室处理样品的能力，我们将建造三个额外的热退磁炉。(3)在古地磁研究中，识别和表征携带磁性信号的含铁矿物是非常重要的。 我们将购买并安装一台Kappabridge磁力计，用于测量磁化率与温度和磁化率各向异性的关系。 由此产生的数据将提供快速和详细的信息，允许识别和表征亚铁磁性矿物。购买和/或建造这些仪器项目将允许亚利桑那大学古地磁实验室扩大生产力和提高该设施的实验能力。 ***