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Lake sediment records of industrialization in the Sudbury area of Ontario, Canada

Conference · · Geol. Soc. Am., Abstr. Programs; (United States)
OSTI ID:6471122
The smelting of nickel and copper sulfide ores has drastically modified the original landscape around Sudbury, Ontario. A record of this impact exists in the sediments of local lakes. Changes in the annual fallout of heavy metals, identifiable smoke particulates, and pollen grains reflect the changes that occurred in the sedimentation rate and the vegetation. A year by year chronology for the last 300 years was provided by meromictic lake sediments containing countable seasonal laminations, obtained by a freezing technique that kept the sediments and sediment/water interface undisturbed. Results indicate that: correspondences of vegetation changes, and sedimentation rates with metal residues and smoke particulates in the sediments, and with published smelter records are good; annual laminations in meromictic lakes provided an excellent chronology, as checked against known dates for settlement and the onset of smelting; identifiable smoke particulates provided a good record of smelter activity, and were also a check on metal residue mobility in the sediments.
Research Organization:
California State Univ., Bakersfield (USA)
OSTI ID:
6471122
Report Number(s):
CONF-8510489-
Conference Information:
Journal Name: Geol. Soc. Am., Abstr. Programs; (United States) Journal Volume: 17
Country of Publication:
United States
Language:
English

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Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
580400 -- Geochemistry-- (-1989)
AEROSOLS
AIR POLLUTION
ASHES
ATMOSPHERIC PRECIPITATIONS
CANADA
CHEMICAL COMPOSITION
CHEMISTRY
COLLOIDS
COPPER ORES
DISPERSIONS
EROSION
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
GEOCHEMISTRY
GEOLOGY
INDUSTRIAL WASTES
INDUSTRY
LAKES
LAND POLLUTION
METAL INDUSTRY
NICKEL ORES
NORTH AMERICA
ONTARIO
ORES
PARTICLES
PARTICULATES
POLLUTION
PRECIPITATION SCAVENGING
RESIDUES
SEDIMENTATION
SEDIMENTS
SEPARATION PROCESSES
SMELTERS
SMELTING
SMOKES
SOLS
STRATIGRAPHY
SURFACE WATERS
WASHOUT
WASTES
WATER POLLUTION