Natural Resources

Open File NFLD/3174 - Till Geochemistry of Northeast Newfoundland (NTS Map Areas 2C/13, 2D/15, 2D/16, 2E/01, 2E/08, 2F/04 and 2F/05)

D. Brushett

St. John's, Newfoundland, October, 2012


This report provides the geochemical data from a multi-year (commenced in 2009) till geochemistry and surficial mapping program conducted in northeastern Newfoundland, in the Weir's Pond (NTS 2E/01), Carmanville (NTS 2E/08), Wesleyville (NTS 2F/04), Musgrave Harbour (NTS 2F/05), Gander (NTS 2D/15), Gambo (NTS 2D/16), and St. Brendan's (NTS 2C/13) areas. Regional till sampling was conducted at a spacing of 1 sample per 1 km2 in areas of good access, and 1 sample per 4 km2 where helicopter support was required; a total of 1651 till samples were collected. Geochemical data of 53 elements, from BC- or C-horizon till samples, are presented and includes the results of analyses by ICP-ES for aluminum, arsenic, barium, beryllium, cadmium, calcium, cerium, chromium, cobalt, copper, dysprosium, iron, lanthanum, lead, lithium, magnesium, manganese, molybdenum, nickel, niobium, phosphorus, potassium, scandium, sodium, strontium, titanium, vanadium, yttrium, zinc and zirconium; by INAA for antimony, arsenic, barium, bromine, calcium, cerium, cesium, chromium, cobalt, europium, gold, iron, hafnium, iridium, lanthanum, lutetium, mercury, molybdenum, nickel, neodymium, rubidium, scandium, samarium, selenium, silver, sodium, strontium, tantalum, tin, terbium, thorium, tungsten, uranium, ytterbium, zinc and zirconium. A complete data listing, field duplicate data, and individual element distribution maps, on a bedrock geology base map, are also provided.

Anomalous concentrations of gold, arsenic, beryllium, chromium, copper, nickel, lead and zinc are present throughout the study area, particularly in tills overlying the metasedimentary rocks of Jonathans Pond Formation and the Gander River Complex.

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