update : November 10, 2018 23:41 IST
<! – 8 minutes ago
Washington DC. [USA], November 10 (ANI): In a recent study, archeologists point out that distant community interactions can be understood more clearly by studying the types of stone tools they use.
Howiesons Poort blades and blades were found mainly in the Klipdrift Shelter in South Cape South Africa. It has been surveyed by a group of coal experts who have found clear similarities to the tools in the South African Western Cape region, more than 300 km away, especially at the Diepkloof Rock Shelter site.
Dr. Katja Douze, lead author of the study, said, "Although there are regional specificities for tools on many sites, the similarities between Klipdrift Shelter and Diepkloof Rock Shelter are amazing." This study was published in PLOS ONE.
Under the direction of Professor Christopher Henshilwood, the team investigated thousands of stone tools excavated from seven levels representing 66,000 years ago and 59,000 years ago, establishing the differences in stone tool design over time. They compared stone tools to several other sites in Howiesons Poort.
"Klipdfrift Shelter's site is one of the few places in the Howiesons Poort to include a long archeological sequence that provides data on cultural change over time, and is perfect for studying cultural change over time "
What is even more interesting for researchers, however, was the fact that for the first time, designing stone tools could show a close networked interaction between distant communities.
"You can see that there is a regular interaction between the two communities because Klipdrift and Diepkloof Shelter's tools are almost perfectly matched, which can draw different parallel lines at first. And showed portability between the two sites, a unique feature of the medieval Stone Age.
Africa's medieval stone age has grown from 350,000 years ago to 25,000 years ago and is an important time to understand the evolution of the first homo sapiens and behavioral changes in Africa's time and movements.
Howieson 's Poort Shelter, an archeological site near Grahamstown, South Africa Howiesons Poort is a specific technical culture of the Middle Stone Age that evolved from Southern Africa in the Diepkloof Shelter 100,000 years ago, but 66,000 – 59,000 years from most other Howiesons Poort sites .
Howiesons Poort features are distinctly different from other mid-industry industries. It features the production of small blades and backed tools and is used as a hunting shoe for meat processing, while the other MSA industry is slice, big day, point production.
The tools found in the deeper layers of the Klipdrift Shelter, representing the early stages of the Howiesons Poort, were made of heat-treated silcrete, but later-stage tools were made of less homogeneous rocks such as quartz and quartzite. These changes occur with changes in tool production strategies. "Changes over time seem to reflect cultural changes rather than designer's immediate changes due to climate change," Douze explained.
"Our preconceptions about prehistoric times are only for survival, but in fact they can adapt very well to environmental conditions," says Douze. "It seems that there is no motive between the change of design choice and environmental change, Over the course of time, a very gradual change would have taken place that ended the Howiesons Poort. "
The team also established how and how the Howiesons Poort was terminated and attempted to determine whether it ended abruptly or gradually.
"Klipdrift Shelter's Howiesons Poort reduction shows a gradual and complex pattern of change, and the first" symptom "is much earlier than the final cancellation of the typical Howiesons Poort technology and toolkit, Douze said.
"We do not support lethal scenarios that result in demographically dangerous population declines or massive population changes," he said. The three areas of Howiesons Poort in southern Africa (Rose Cottage Cave, the main site of the Diepkloof Rock Shelter and Klasies River) identify intensive evolution on cultural trajectories rather than an isolated group that responds immediately to locally determined pressures. "(ANI)