scholarly journals Bog and lake sediment archives reveal a lagged response of subarctic lakes to diminishing atmospheric Hg and Pb deposition

2021 ◽  
Vol 775 ◽  
pp. 145521
Author(s):  
Nicolas Pelletier ◽  
John Chételat ◽  
Michael J. Palmer ◽  
Jesse C. Vermaire
Keyword(s):  
Lake Sediment ◽  
Subarctic Lakes

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

2019 ◽  
Author(s):  
Collin Murphy ◽  
◽  
Byron A. Steinman ◽  
David P. Pompeani ◽  
Kathryn Schreiner ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Environmental Conditions ◽  
Copper Mining ◽  
Isle Royale ◽  
Sediment Biogeochemistry

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

Bacterial contribution to 17β-estradiol mineralization in lake sediment as revealed by 13C-DNA stable isotope probing

2021 ◽  
pp. 117505
Author(s):  
Huanjun Zhang ◽  
Yin Lu ◽  
Yi Li ◽  
Lei Wang ◽  
Wenlong Zhang ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Lake Sediment ◽  
Stable Isotope Probing ◽  
17Β Estradiol

Evaluating Holocene natural hazards in the French Massif Central from a regional lake sediment approach

2021 ◽  
Author(s):  
E. Chapron ◽  
A. Foucher ◽  
L. Chassiot ◽  
W. Fleurdeus ◽  
V. Arricau ◽  
...  
Keyword(s):  
Natural Hazards ◽  
Lake Sediment ◽  
French Massif Central ◽  
Massif Central

scholarly journals Pelorhabdus rhamnosifermentans gen. nov., sp. nov.,a strictly anaerobic rhamnose degrader from freshwater lake sediment

2021 ◽  
pp. 126225
Author(s):  
Fabian Gräßle ◽  
Caroline Plugge ◽  
Paolo Franchini ◽  
Bernhard Schink ◽  
David Schleheck ◽  
...  
Keyword(s):  
Lake Sediment ◽  
Freshwater Lake ◽  
Strictly Anaerobic

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.

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