RECONSTRUCTION OF ARCHAIC COPPER MINING AND HOLOCENE ENVIRONMENTAL CONDITIONS ON ISLE ROYALE, MICHIGAN USING LAKE SEDIMENT BIOGEOCHEMISTRY

2020 ◽  
Author(s):  
Collin Murphy ◽  
◽  
Byron A. Steinman ◽  
Kathryn Schreiner ◽  
David P. Pompeani ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Environmental Conditions ◽  
Copper Mining ◽  
Isle Royale ◽  
Sediment Biogeochemistry

ON THE TIMING OF THE OLD COPPER COMPLEX IN NORTH AMERICA: A COMPARISON OF RADIOCARBON DATES FROM DIFFERENT ARCHAEOLOGICAL CONTEXTS

Radiocarbon ◽  
2021 ◽  
pp. 1-19
Author(s):  
David P Pompeani ◽  
Byron A Steinman ◽  
Mark B Abbott ◽  
Katherine M Pompeani ◽  
William Reardon ◽  
...  
Keyword(s):  
Native American ◽  
Lake Sediment ◽  
Copper Complex ◽  
Lake Superior ◽  
Copper Mining ◽  
Radiocarbon Dates ◽  
Copper Mines ◽  
Tool Technology ◽  
High Lead ◽  
Old Copper Complex

ABSTRACT The Old Copper Complex (OCC) refers to the production of heavy copper-tool technology by Archaic Native American societies in the Lake Superior region. To better define the timing of the OCC, we evaluated 53 (eight new and 45 published) radiocarbon (14C) dates associated with copper artifacts and mines. We compared these dates to six lake sediment-based chronologies of copper mining and annealing in the Michigan Copper District. 14C dates grouped by archaeological context show that cremation remains, and wood and cordage embedded in copper artifacts have ages that overlap with the timing of high lead (Pb) concentrations in lake sediment. In contrast, dates in stratigraphic association and from mines are younger than those from embedded and cremation materials, suggesting that the former groups reflect the timing of processes that occurred post-abandonment. The comparatively young dates obtained from copper mines therefore likely reflect abandonment and infill of the mines rather than active use. Excluding three anomalously young samples, the ages of embedded organic material associated with 15 OCC copper artifacts range from 8500 to 3580 cal BP, confirming that the OCC is among the oldest known metalworking societies in the world.

Copper mining on Isle Royale 6500–5400 years ago identified using sediment geochemistry from McCargoe Cove, Lake Superior

The Holocene ◽  
2014 ◽  
Vol 25 (2) ◽  
pp. 253-262 ◽  
Author(s):  
David P Pompeani ◽  
Mark B Abbott ◽  
Daniel J Bain ◽  
Seth DePasqual ◽  
Matthew S Finkenbinder
Keyword(s):  
Lake Superior ◽  
Sediment Geochemistry ◽  
Copper Mining ◽  
Isle Royale

RECONSTRUCTION OF PALEOENVIRONMENTAL CONDITIONS AND TEMPORAL PATTERNS OF ANCIENT MINING ON ISLE ROYALE USING BIOGEOCHEMICAL ANALYSES OF LAKE SEDIMENT

2020 ◽  
Author(s):  
Kathryn G. Vall ◽  
◽  
Byron A. Steinman ◽  
Byron A. Steinman ◽  
David P. Pompeani ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Temporal Patterns ◽  
Isle Royale

scholarly journals Correlation Between the Concentration of Lead in the Blood of Dogs and People Living in the Same Environmental Conditions

2014 ◽  
Vol 58 (3) ◽  
pp. 473-477
Author(s):  
Jerzy Monkiewicz ◽  
Katarzyna A. Rogowska ◽  
Anna Mielnikiewicz ◽  
Andrzej Grosicki
Keyword(s):  
Environmental Conditions ◽  
Significant Positive Correlation ◽  
Lead Concentration ◽  
Blood Lead ◽  
The Body ◽  
Blood Lead Concentration ◽  
Copper Mining ◽  
Industrial Region ◽  
Positive Correlation ◽  
Lower Silesia

Abstract The studies, conducted between 2010 and 2012, involved 102 dogs and 505 people from Lower Silesia (LS), 104 dogs and 578 people from the Legnica - Głogów Copper Mining Region (LGCMR), and 101 dogs and 897 people from the Upper Silesian Industrial Region (USIR). A significant positive correlation between blood lead concentration (BLC) in dogs and people living in the same environment was found. Moreover, the data revealed an increase in BLC in dogs and people with the progressive aging of the body. The highest average BLC in dogs and humans were reported in the LGCMR followed by USIR and LS.

Influence of NaCl and CaCl2 on lake sediment biogeochemistry

2011 ◽  
Vol 26 ◽  
pp. S198-S201 ◽  
Author(s):  
Seon-young Kim ◽  
Carla Koretsky
Keyword(s):  
Lake Sediment ◽  
Sediment Biogeochemistry

Vibration Isolator System for Electron Microscope

1990 ◽  
Vol 48 (1) ◽  
pp. 182-183
Author(s):  
K. Ohi ◽  
M. Mizuno ◽  
T. Kasai ◽  
Y. Ohkura ◽  
K. Mizuno ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Magnetic Fields ◽  
Environmental Conditions ◽  
Vibration Isolator ◽  
Air Conditioners ◽  
Vibration Isolators ◽  
Large Size ◽  
Electron Microscopes

In recent years, with electron microscopes coming into wider use, their installation environments do not necessarily give their performance full play. Their environmental conditions include air-conditioners, magnetic fields, and vibrations. We report a jointly developed entirely new vibration isolator which is effective against the vibrations transmitted from the floor.Conventionally, large-sized vibration isolators which need the digging of a pit have been used. These vibration isolators, however, are large present problems of installation and maintenance because of their large-size.Thus, we intended to make a vibration isolator which1) eliminates the need for changing the installation room2) eliminates the need of maintenance and3) are compact in size and easily installable.

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