Expanding Capabilities for the University of Arizona Paleomagnetics Laboratory

[00:52 . 26]巴特勒亚利桑那大学的古地磁实验室是一个用于各种地质项目的实验设施。古地磁实验室主任兼该项目的首席研究员目前正在与地质学家合作开展以下研究项目：(a)阿拉斯加东南部；(b)玻利维亚安第斯山脉；(c)西班牙的比利牛斯山；尼泊尔(d);埃塞俄比亚(e);(f)西藏北部。该基金将为三个设备需求提供部分支持：(1)用于测量古磁力的主要仪器是超导岩石磁力仪（SRM），该仪器使用制冷系统保持低温组分的低温。该制冷系统需要定期更换，这将在赠款期的早期完成。(2)分析岩石样品磁性的一种常用方法是热退磁，即在低磁场环境下将样品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具有重要意义。我们将购买并安装一台kappbridge电纳计，用于测量磁化率随温度的变化和磁化率的各向异性。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磁学实验室扩大生产力并推进该设施的实验能力。＊＊＊

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. ***