HOME >> BIOLOGY >> NEWS
New method for determining age of artifacts fills chronological gap for scientists

Irvine, Calif., April 12, 2004 -- A UC Irvine archaeological scientist has created a new method for determining the approximate age of many artifacts between 50,000 to 100,000 years old a period for which other dating methods are less effective.

In a recent study in the Journal of Archaeological Science, Jonathon Ericson, professor and chair of UCI's Environmental Health, Science and Policy Department, and colleagues introduce a new mineral dating technique called quartz hydration dating. The technique dates artifacts containing quartz, a common mineral found in almost every type of rock.

Quartz hydration dating is based on a natural phenomenon that occurs when a piece of quartz is fractured. When a statue or a common chopping tool or hand ax is made, the surface is chipped, flaked, fractured or polished. Over time, water diffuses into the freshly exposed surface forming a hydration layer. The thickness of this layer can then be measured by a nitrogen particle beam to determine how many years ago the object was made or fractured naturally.

According to Ericson, quartz hydration can date objects that are between 100 and 1 million years old to within 20 to 35 percent of the object's age. Quartz can be found at archaeological excavation sites worldwide from Africa's Olduvai Gorge to China's Choukoutien and even California's Mohave Desert. A ubiquitous mineral, quartz was used in toolmaking from the beginning of human history and also can be found in statues, bowls and ceramics.

The new method, however, is particularly useful for dating quartz-containing artifacts in the "chronological gap" that exists for objects that are between 50,000 to 100,000 years old. Other dating methods are poor performers for this period or have questionable accuracy, and the most familiar dating methods are not effective at all. Radiocarbon dating is good for dating organic material up to around 50,000 years old, and potassium argon dating is good for
'"/>

Contact: Lori Brandt
lbrandt@uci.edu
949-824-5484
University of California - Irvine
12-Apr-2004


Page: 1 2

Related biology news :

1. OHSU researchers discover possible method for early detection, prevention of premature birth
2. Japanese researchers develop novel method of introducing transgenes into animals
3. New screening method turns up potential compound for treating anthrax
4. Radiologists provide safe delivery method for gene therapy
5. New method is first to mimic subtle genetic changes
6. Proven method of bone analysis may clarify human origins
7. UVa researchers describe method of protecting chromosomes during cell division
8. Computer method identifies potentially active enzymes
9. Risk and food are on the same plate: World food safety experts offer new methods to assess risk
10. Purdue engineers develop quick, inexpensive method to prototype microchips
11. Test method provides biocompatibility barometer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/14/2017)... PARIS , June 15, 2017  IBM (NYSE: IBM ... the international tech event dedicated to developing collaboration between startups ... on June 15-17. During the event, nine startups will ... deliver value in various industries. ... in the international market, with a 30 percent increase in ...
(Date:5/6/2017)... 2017 RAM Group , Singaporean ... breakthrough in biometric authentication based on a ... to perform biometric authentication. These new sensors are based ... by Ram Group and its partners. This sensor will ... chains and security. Ram Group is a next ...
(Date:4/17/2017)... NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... Report on Form 10-K on Thursday April 13, 2017 with the ... The ... section of the Company,s website at http://www.nxt-id.com  under "SEC Filings," ... 2016 Year Highlights: Acquisition of ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... 12, 2017 , ... They call it the “hairy ball.” ... depiction of a system of linkages and connections so complex and dense that ... computer science at Worcester Polytechnic Institute (WPI) and director of the university’s bioinformatics ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... announced today that they have entered into a multiyear collaboration to identify and ... researchers with additional tools for gene editing across all applications. , Under the ...
(Date:10/12/2017)... ca (PRWEB) , ... October 12, 2017 , ... ... the Surgical Wound Market with the addition of its newest module, US Hemostats ... $1.2B market for thrombin hemostats, absorbable hemostats, fibrin sealants, synthetic sealants and biologic ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... analysis platform specifically designed for life science researchers to analyze and interpret ... Rosalind Franklin, who made a major contribution to the discovery of the ...
Breaking Biology Technology:
Cached News: