Expanding Capabilities for the University of Arizona Paleomagnetics Laboratory

巴特勒亚利桑那大学的古地磁学实验室是一个用于各种地质项目的实验设施。古磁学实验室主任兼国际和平研究所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)西班牙比利牛斯山；(D)尼泊尔；(E)埃塞俄比亚；(F)西藏北部。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强计(SRM)，它使用制冷系统来保持低温组件的低温。这种制冷系统需要定期更换，这将在授权期早期完成。(2)分析岩石样品磁性的一种常见方法是热退磁，即在低磁场环境中将样品加热到逐渐较高的温度。为了增加实验室处理样品的能力，我们将额外建造三个热去磁炉。(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。我们将购买并安装卡普布里奇磁感度计，用于测量磁化率与温度的关系以及磁化率的各向异性。购买和/或建造这些仪器设备将使亚利桑那大学的古磁学实验室能够提高生产率和提高该设施的实验能力。***

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. ***