261 D6. Recent Advances in Geochemistry (Posters)

Wednesday, 25 September 2019
9:00 AM - 6:30 PM
Hall AB, North Building

FACTORS AFFECTING MOLYBDENUM'S NEAR-SURFACE DISTRIBUTION IN MILFORD, BEAVER COUNTY, UTAH

Paper number: 261-3
Program: Technical Sessions
Time: 9:00 AM – 6:30 PM

Authors

Abstract

Molybdenum (Mo) is a trace element essential to both plants and animals. Mo is used to carry out processes involving redox reactions to promote nitrogen use efficiency and nitrate reduction (Moncada et al., 2018). In western Utah, Mo distribution in soils may be attributed to the numerous igneous intrusions of the region (Bon and Gloyn, 2003). These intrusions have been exploited in multiple mining operations in Iron, Beaver, Juab, Tooele, and Salt Lake Counties. The goal of this project is to assess the role of geological features as fluid pathways creating potentially elevated Mo concentrations in nearby agricultural soils.

This project will test the hypothesis that geological features along the Milford Mineral Belt in Beaver Country have led to increased concentrations of Mo in nearby soils, and in isolated areas, are still influencing the concentrations of Mo through its redistribution. To test this hypothesis, soils from around intrusions and other geological features leading into the agricultural land will be tested for Mo. The goal of this study will be to create a Mo concentration map of the soils within this region. This map will provide the basis for understanding if Mo in the soils is sourced from the Mineral Belt.

To complete this project, sampling and analysis will be completed to supplement a preliminary Mo concentration map of the area. Ongoing sampling is targeting zones known to be rich in Mo, and those thought to provide geologic constraints on metal transport and accumulation. These soils will be digested in a series of acids and analyzed using the Agilent 7700 Inductively Coupled Plasma Mass Spectrometer at SUU. Initial analyses will include a wide range of trace metals in order to better understand the complete concentration of the soils. With this information, further analyses can be constrained to Mo alone with more precise preparation and analytical conditions. The Mo concentrations can then be compared to the samples sites to create a map of Mo in the soils.

Moncada, A., Miceli, A., Sabatino, L., Iapichino, G., D’Anna F., & Vetrano, F. (2018). Effects of molybdenum rate on yield and quality of lettuce, escarole, and curly endive grown in a floating system. 1(2).

Bon, R.L., Gloyn, R.W. (2003) 2003 Summary of Mineral Activity in Utah. Utah Geological Survey, pp. 19

Geological Society of America Abstracts with Programs. Vol. 51, No. 5

doi: 10.1130/abs/2019AM-339004

© Copyright 2019 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.