Instrument upgrades and supporting equipment to establish a SIMS facility at Memorial university

Cameca IMS 4f离子微探针二次离子质谱仪（SIMS）将进行升级和装备，以允许对纳克级固体天然材料样品进行高精度的原位稳定同位素和微量元素分析。SIMS技术分析小物体、小体积和小样本的独特能力将应用于地球和环境科学的各种研究，包括：i)矿床成因。对巨大的Voisey's Bay矿床的研究将检查岩浆输入的偶发性，并确定同化的S（和Se）的顺序等分是否在矿石中反映为分带。如果事实证明是这样，那么随着矿山开发的继续，配对硫同位素和Se/S微量分析将有助于矿体的圈定和延伸。互补离子成像研究也将应用于冶金工艺的优化，以及尾矿和废物容器的环境控制。(二)火山学。对喷发物质中硫同位素的微量分析将用于了解汇聚的板块边界火山（如哥伦比亚的内华达德尔鲁伊斯火山）爆发前气态硫的积累。这些火山可以释放出极大量的SO2 -，造成火山爆炸危险和S再循环到大气中，影响气候并产生酸雨。iii)海洋生物矿化/古气候学。SIMS分析将应用于现代珊瑚礁的环境监测。例如，在受矿山尾矿影响的地区，离子成像可以揭示珊瑚骨架内携带颗粒中的污染物金属的分布。这项研究还将使用氧和碳同位素的微观分析来检测由于环境压力（如强风暴或大火）而导致的珊瑚礁珊瑚骨骼的短期变化。深水珊瑚Sr/Ca比值和氧同位素的精细尺度测定将用于研究纽芬兰和拉布拉多大陆斜坡的温度记录，作为拉布拉多洋流强度随时间的监测。

A Cameca IMS 4f ion microprobe Secondary Ion Mass Spectrometer (SIMS) will be upgraded and equipped to permit high precision in situ stable isotope and trace element analyses of nanogram samples of solid natural materials. The unique capabilities of the SIMS technique for the analysis of small objects, small volumes and small samples will be applied to a wide variety of studies in Earth and Environmental Science, including: i) Ore deposits genesis. A study of the giant Voisey's Bay deposit will examine episodicity of magmatic inputs, and determine whether sequential aliquots of assimilated S (and Se) are reflected as zonations within the ores. If this proves to be the case, then paired sulphur isotope and Se/S microanalysis will assist in delineation and extension of orebodies as mine development continues. Complementary ion imaging studies will also be applied to optimization of process metallurgy, and the environmental control of tailings and waste containments. ii) Volcanology. Microanalysis of sulphur isotopes in erupted materials will be applied to understanding the pre-eruptive accumulation of gaseous sulphur within convergent plate boundary volcanoes such as Nevado del Ruiz, Colombia. These volcanoes can release extremely large volumes of SO2 - with consequences for both volcanic explosivity hazard and recycling of S to the atmosphere, affecting climate and producing acid rain. iii) Marine Biomineralization/Paleoclimatology. SIMS analysis will be applied to the environmental monitoring of modern coral reefs. For example, in areas compromised by mine tailings, ion imaging can reveal the distribution of contaminant metals resident in entrained particles within the coral skeletons. This study will also use microanalyses of oxygen and carbon isotopes to detect short term changes in reef coral skeletons due to environmental stress such as severe storms or large fires. Fine scale determination of Sr/Ca ratios and oxygen isotopes in deep water coral species will be used to study the temperature record on the continental slope off Newfoundland and Labrador, as a monitor of the strength of the Labrador Current over time.