Navigation Links
Earliest known bug-repellant plant bedding found at South African rock shelter

erna, National Science Foundation-supported archaeological scientists at Boston University, analyzed thin sections of sediment that preserved the original contextual integrity of the deposits at the millimeter to centimeter scale.

Their micromorphological analysis found evidence of individual human activities, including the construction of hearths and bedding and the maintenance of occupational surfaces through the sweep out of hearths.

"I don't think we would have had this confirmation, or at least impetus, if we hadn't had done the original thin section work," said Goldberg. "We were able to recognize several different types of deposits that are only centimeters thick. Among them were layers composed mainly of phytoliths, some of which were clearly sedges," he said.

Phytoliths are minute particles formed of mineral matter by a living plant and fossilized in rock. In this case, researchers found fossilized sedge particles.

"We could also observe in thin section some pieces of clay that was likely attached to the roots of the sedges from where they were taken down at the stream below the site," said Goldberg.

In addition, the team's analysis confirmed the repeated burning of plant bedding. Most likely, "the bedding was burnt to rid it of pests--insects and perhaps rodents--and to clean up decaying organic material," said Wadley.

"Since sites are usually simply abandoned when they become fusty, the implication is that people wanted to reuse Sibudu regularly, and more regularly than would be allowed by natural processes of decay to clean the site. Burning was probably a more effective way to get rid of insects than the use of herbs."

According to Wadley, the discovery is particularly well timed, since future work at the site may be in jeopardy. Local officials plan to construct a large housing tract near the Sibudu rock shelter that Wadley says would irreparably damage the site and prevent future excava

Contact: Bobbie Mixon
National Science Foundation

Page: 1 2 3 4

Related biology news :

1. Earliest psychomyiid caddisfly fossils, from 100-million-year-old Burmese amber
2. Young graphite in old rocks challenges the earliest signs of life
3. Earliest humans not so different from us, research suggests
4. Possible discovery of earliest animal life pushes back fossil record
5. Discovery of possible earliest animal life pushes back fossil record
6. UCSF transgenic mouse mimics Parkinsons earliest symptoms
7. Novel studies of decomposition shed new light on our earliest fossil ancestry
8. Geologist analyzes earliest shell-covered fossil animals
9. Plant fossils give first real picture of earliest Neotropical rainforests
10. Geobiologists propose that the earliest complex organisms fed by absorbing ocean buffet
11. IU discovers stone tools, rare animal bones -- clues to Caribbeans earliest inhabitants
Post Your Comments:
Related Image:
Earliest known bug-repellant plant bedding found at South African rock shelter
(Date:7/24/2014)... reduce fire hazard in the United States, wildland managers ... shrubs and suppressed trees (ladder fuels). These cuttings ... of low fire danger in order to dispose of ... air pollutants, managers often cover all or part of ... to as agricultural plastic, in order to keep water ...
(Date:7/24/2014)... primordial soup in which life arose have been maintained in ... East Anglia. , Research published today in the Journal ... and very likely also in animals still perform ancient reactions ... some four billion years ago. , The primordial soup ... as a result of the combination of metals, gases from ...
(Date:7/24/2014)... his work with a new drug that successfully treated lupus ... has received a $250,000 grant to expand his research to ... treat a wider range of autoimmune diseases., Chandra Mohan, Hugh ... at UH, previously published a study in Arthritis Research & ... treated lupus in mice and reduced the number of cases ...
Breaking Biology News(10 mins):Study gives new perspective on agricultural plastic, debris burning, and air quality 2Biomedical engineer looks at new applications for novel lupus drug 2Biomedical engineer looks at new applications for novel lupus drug 3
... 28, 2010 A yearlong beach study led by ... swimmers at sub-tropical beaches face an increased risk of ... that beachgoers face when exposed to recreational marine water ... or contamination. B.E.A.C.H.E.S. (Beach Environmental Assessment ...
... have a storied history in meteorological research -- think of ... used to carry aloft sensors that measure wind speed. Previously, ... were prone to temperature errors that affected their accuracy. Now ... have developed a way to use a kite itself to ...
... behaviour of the mutant protein ,huntingtin, which leads to ... the disease, a University of Melbourne study reveals. ... characterized by a steady decline in motor control and ... of the disease has long baffled scientists. Symptoms ...
Cached Biology News:Study suggests swimmers at sub-tropical beaches show increased risk of illness 2Huntington's disease discovery provides new hope for treatment 2
(Date:7/24/2014)... , July 24, 2014 Research and ... "Global Cell Culture Market 2014-2018" report to their ... Cell culture is the in vitro growth of ... research, cell studies, and biopharmaceutical production. Cell culture is ... Cell culture instruments and cell culture consumables are necessary ...
(Date:7/24/2014)... Livermore, California (PRWEB) July 24, 2014 ... due to advances in modeling lithium-ion battery storage ... could benefit from a theoretical model created at ... Rice University that predicts how carbon components ... for energy storage emphasizes the urgent need for ...
(Date:7/24/2014)... , July 24, 2014  CorMedix Inc. (NYSE ... and commercializing therapeutic products for the prevention and ... receipt of notice on July 18, 2014 from ... has accepted the CorMedix plan to regain compliance ... a result, the NYSE-MKT is continuing the Company,s ...
(Date:7/24/2014)... 2014 Deep Research Report on Global ... and in-depth research report on Potassium Sulphate ... information, including its definition, classification, application, and industry ... the international market analysis, including China’s domestic market ... environment & economic situation analysis, the influence of ...
Breaking Biology Technology:Global Cell Culture Market 2014-2018: Key Vendors are Becton, Dickinson and Co, EMD, GE Healthcare, Lonza Group, Sigma Aldrich and Thermo Fisher Scientific 2Getting More Life out of Lithium-ion Batteries 2CorMedix, Inc. Granted Extension of NYSE-MKT Listing 2CorMedix, Inc. Granted Extension of NYSE-MKT Listing 3Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at 2Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at 3Potassium Sulphate Market & SHMP Industry 2014 (Global, China) Analysis Now Available at 4
... Doyle selected two local residents as nominees for ... whom expressed eagerness about their forthcoming role in shaping ... a city alderman, and Judy Schieble, co-director of an ... the commission, which will be responsible for the development ...
... and search engines took another turn last month when the ... case 800- JR Cigar, Inc ., v., Inc . ... is now part of Yahoo! , ,GoTo ... JR Cigar" to various JR Cigar competitors. , ,As mentioned ...
... - The United States Catholic Bishops did not ... White House . , , Wisconsin Right to Life ... method of deriving stem cells from human embryos that does not ... a promising development. , ,While various objections still remain, could the ...
Cached Biology Technology:Wisconsin spaceport committee moves closer to formation 2Are consumers confused by search engine ads? 2Are consumers confused by search engine ads? 3Are consumers confused by search engine ads? 4There's a new dynamic in the stem cell debate 2There's a new dynamic in the stem cell debate 3There's a new dynamic in the stem cell debate 4
... Reticulocyte Lysate contains the cellular components necessary ... initiation, elongation and termination factors) but has ... Lysate is used primarily for the isolation ... source of endogenous globin mRNA. Untreated Lysate ...
Coverslips for Microarrays, 1. *Category: MICROARRAY ACCESSORIES....
Form: Concentrated Applications: ELISA...
Biology Products: