Featured Research

from universities, journals, and other organizations

Lake Sediments Help Scientists Trace 7,000 Years Of Mining, Metal Use In China

Date:
June 20, 2008
Source:
American Chemical Society
Summary:
A new geochemical study illuminates 7,000 years of mining and metal use in central China and links these trends to fluctuations in airborne pollution during the Bronze Age and other military and industrial periods in Chinese history. The study could help scientists better assess the accumulative environmental effects of human activity in the region since prehistory times.

Scientists used core sediments from China's Liangzhi Lake to track use of metals over several thousand years.
Credit: Courtesy of Xiangdong Li

A new geochemical study illuminates 7,000 years of mining and metal use in central China and links these trends to fluctuations in airborne pollution during the Bronze Age and other military and industrial periods in Chinese history. The study could help scientists better assess the accumulative environmental effects of human activity in the region since prehistory times.

Related Articles


Using carbon-dated core sediments taken from Liangzhi Lake in Hubei province, Xiang-Dong Li and colleagues were able to track metal deposit trends at the lake dating back to 5,000 B. C. Liangzhi Lake, located in an important region in the development of Chinese civilization, is relatively undistributed by local wastewater discharges and is therefore an ideal site to study ecological changes and the effects of past human activity, the scientists say.

Beginning in about 3,000 B.C. concentrations of copper, nickel, lead and zinc in the sediments began to rise, indicating the onset of Bronze Age in ancient China, the researchers found. In the late Bronze Age (475 B.C. to 220 A.D.), an era corresponding with numerous wars, sediment concentrations of copper increased 36 percent and lead by 82 percent.

Copper and lead were used extensively to make bronze tools and weapons. The sediments suggest mining and metal usage in the region continued to wax and wane into the modern era, reflecting the environmental changes influenced by past human activity.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Seven Thousand Years of Records on the Mining and Utilization of Metals From Lake Sediments in Central China. Environmental Science & Technology, July 1, 2008 DOI: 10.1021/es702990n

Cite This Page:

American Chemical Society. "Lake Sediments Help Scientists Trace 7,000 Years Of Mining, Metal Use In China." ScienceDaily. ScienceDaily, 20 June 2008. <www.sciencedaily.com/releases/2008/06/080616092214.htm>.
American Chemical Society. (2008, June 20). Lake Sediments Help Scientists Trace 7,000 Years Of Mining, Metal Use In China. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2008/06/080616092214.htm
American Chemical Society. "Lake Sediments Help Scientists Trace 7,000 Years Of Mining, Metal Use In China." ScienceDaily. www.sciencedaily.com/releases/2008/06/080616092214.htm (accessed October 31, 2014).

Share This



More Earth & Climate News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How A Chorus Led Scientists To A New Frog Species

How A Chorus Led Scientists To A New Frog Species

Newsy (Oct. 30, 2014) A frog noticed by a conservationist on New York's Staten Island has been confirmed as a new species after extensive study and genetic testing. Video provided by Newsy
Powered by NewsLook.com
Raw: Hawaii Lava Inches Closer

Raw: Hawaii Lava Inches Closer

AP (Oct. 30, 2014) Aerial video shows the path lava has carved across a portion of Hawaii's big island, threatening homes in the town of Pahoa. Officials say the flow was just over 230 yards from a roadway Thursday morning. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Raw: Hawaii Lava Approaching Village Road

Raw: Hawaii Lava Approaching Village Road

AP (Oct. 30, 2014) The lava flow on the Big Island of Hawaii was 225 yards from Pahoa Village Road on Wednesday night. The lava is slowing down but still approaching the village. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Endangered Carpathian Ponies Are Making a Comeback in Poland

Endangered Carpathian Ponies Are Making a Comeback in Poland

AFP (Oct. 29, 2014) At the foot of the rugged Carpathian mountains near the Polish-Ukrainian border, ranchers and scientists are trying to protect the Carpathian pony, known as the Hucul in Polish. Duration: 02:17 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins