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Title: Reconnaissance of Colorado Front Range bogs for uranium and other elements

Alpine bogs form along spring-fed valley floors and in steam drainages restricted by moraines, slides, and beaver dams. The bogs are generally young (Holocene) and contain a few tens of centimeters to several meters of peat and organic-rich muck. Organic matter has a great affinity for cations such as uranium; the geochemical enrichment factor between the peats and uraniferous ground water can approach 10,000 to 1. Because the bog sediments are geologically young, the uranium is in gross disequilibrium and has low radioactivity, thus it is undetectable by ground and aerial gamma surveys. Communities that derive a part of their water supplies from drainages containing uraniferous bogs face a potential health threat because the uranium is loosely bound and may easily be remobilized by ground water moving through the bogs. Reconnaissance sampling of bogs was conducted in the Colorado Front Range from the South Park area to the Colorado-Wyoming state line. Several bogs have uranium concentrations of 1000-3000 ppm, but most bogs have uranium concentrations in the 10-100 ppm range. Zinc concentrations of 100-1000 ppm are found in some bogs and many other metallic elements are present in concentrations between 10 and 100 ppm. Concentrations between 100 and 1000 ppmmore » of some of the rare earth elements (e.g., Ce, La, Nd, Yb) were found in the Cripple Creek area.« less
Authors:
; ;
Publication Date:
OSTI Identifier:
5862779
Report Number(s):
CONF-870915-
Journal ID: CODEN: AABUD; TRN: 88-001091
Resource Type:
Conference
Resource Relation:
Journal Name: AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States); Journal Volume: 71:8; Conference: American Association of Petroleum Geologists Rocky Mountain Section meeting, Boise, ID, USA, 13 Sep 1987
Research Org:
Geological Survey, Reston, VA
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; COLORADO; URANIUM DEPOSITS; EXPLORATION; GEOCHEMICAL SURVEYS; RARE EARTHS; ZINC; ELEMENTS; FEDERAL REGION VIII; GEOLOGIC DEPOSITS; METALS; MINERAL RESOURCES; NORTH AMERICA; RESOURCES; SURVEYS; USA 050100* -- Nuclear Fuels-- Reserves, Exploration, & Mining