Sentences with word «knapping»

«Conventional wisdom in human evolutionary studies since has supposed that the origins of knapping stone tools was linked to the emergence of the genus Homo, and this technological development was tied to climate change and the spread of savannah grasslands,» says Dr. Lewis, a Research Assistant Professor at TBI.

He and a colleague knapped flint reproductions of spear and arrow points from the Middle Stone Age in Africa and attached them to wooden shafts.

One line of thinking is that hominins started knapping — banging one rock against another to make sharp - edged stones — so they could cut meat off of animal carcasses, said paper co-author Jason Lewis of the Turkana Basin Institute and Rutgers.

They concluded that the techniques used «could represent a technological stage between a hypothetical pounding - oriented stone tool use by an earlier hominin and the flaking - oriented knapping behavior of [later] toolmakers.»

«It blew us away that these delicate flint - knapped points are this old,» says Todd Braje of Humboldt State University in Arcata, California.

In testing five different ways to convey Oldowan stone - knapping skills to more than 180 college students, the researchers found that the demonstration that used spoken communication — versus imitation, non-verbal presentations or gestures — yielded the highest volume and quality of flakes in the least amount of time and with the least waste.

A wide range of clues made this site convincing, including isolated clusters of burned flint, as if toolmakers had been knapping hand axes by several firesides.

They found stone artifacts — mostly flakes that were dropped as hominins knapped rocks to create tools for butchering animals — lying in sediments almost 1.85 million years old.

Animal bones were frequently used as knapping tools.

The set includes a double - sided blanket backed with double - knapped flannel.

Oldowan stone - knapping dates back to the Lower Paleolithic period in eastern Africa, and remained largely unchanged for 700,000 years until more sophisticated Acheulean hand - axes and cleavers, which marked the next generation of stone tool technology, came on the scene.

«The most distinct of the many cultural innovations in the HP culture were the invention of the bow and arrow, different methods of heating raw materials (stone) before knapping to produce arrow heads, engraving ostrich eggshells with elaborate patterns, intensive use of hearths and relatively intense hunting and gathering practices,» says Professor Christopher Henshilwood, one of the team members from Wits and Bergen Universities.

The researchers tried knapping stones themselves to better understand how the tools they found might have been made.

Now, the Lomekwi artifacts show that those ideas are correct and at least one group of ancient hominin started intentionally knapping stones to make tools long before previously thought.

«The artifacts were clearly knapped [created by intentional flaking] and not the result of accidental fracture of rocks,» said Harmand.

The changing way we view evidence is a lot like knapping stone to make a tool.

You can place the litter boxes on a plastic runner, a vinyl tablecloth, or a short - knapped bath mat.

As Springers are one of the most dog knapped breeds of dogs we have a section on Protecting your Springer, what to do if your springer spaniel goes missing and you can buy a unqiue springer spaniel protection device that is exclusive to out site for just # 2.50.

Constructed from knapped or split Norfolk flint, the stones radiate out from a central nexus like spokes on a wheel, alternating in tone between the chalky white exterior and each flint's darker core.

Kanzi had been taught to knap flint flakes in the 1990s.

In testing five different ways to convey Oldowan stone - knapping skills to more than 180 college students, the researchers found that the demonstration using spoken communication, versus imitation, non-verbal presentation or gestures, yielded the highest volume and quality of flakes in the shortest amount of time and with the least waste.

The study of the Lomekwi 3 artifacts suggest they could represent a transitional technological stage — a missing link — between the pounding - oriented stone tool use of a more ancestral hominin and the flaking - oriented knapping of later, Oldowan toolmakers.

«We found very thin, expertly made projectile points and it blew us away that these delicate flint - knapped points are this old,» he says.

To test whether learning with language impacts which brain networks are involved in stone toolmaking, 15 of the 31 participants learned to knap stone via verbal instruction by watching videos of a skilled knapper's hands during individual training sessions.

We know roughly when that change occurred from experiments in which researchers made their own versions of ancient stone tools using either their left or right hands to chip — or knap — the tool into shape, before comparing them with the tools made by early hominins.

But a series of papers published in early 2015 have solidified an emerging paradigm shift in paleoanthropology — Australopithecus africanus and other Pleistocene hominins, traditionally considered not to have made stone tools, have a human - like trabecular bone pattern in their hand bones consistent with stone tool knapping and use.

Morgan and University of Liverpool archaeologist Natalie Uomini arrived at their conclusions by conducting a series of experiments in teaching contemporary humans the art of «Oldowan stone - knapping,» in which butchering «flakes» are created by hammering a hard rock against certain volcanic or glassy rocks, like basalt or flint.

The head of the chain received a knapping demonstration, the raw materials and five minutes to try their hand at it.

Dr. Harmand, the lead author, says that the Lomekwi 3 artifacts show that at least one group of ancient hominin started intentionally «knapping» stones — breaking off pieces with quick, hard strikes from another stone — to make sharp tools long before previously thought.

After furious debate, most paleoanthropologists now agree that Homo floresiensis, nicknamed the hobbit, is a genuine ancient human with a teensy brain folded in ways that increased its complexity — enough for hobbits to hunt cooperatively, knap their own tools, and thrive on an island for more than a million years.

Relics unearthed in Flores indicate that the hobbits used large stones as hammers to knap and chip away at stone flakes, shaping them into cutting tools.

Harmand believes the Lomekwi 3 tools represent a precursor to free - hand knapping.

When it comes to acquiring and processing food, a hammerstone is better than a big molar, and a knapped flint is sharper than a pointed canine.

Morgan and University of Liverpool archaeologist Natalie Uomini arrived at their conclusions by conducting a series of experiments in teaching contemporary humans the art of «Oldowan stone - knapping,» in which butchering «flakes» are created by hammering a hard rock against certain volcanic or glassy rocks, like basalt or flint (see video demonstration above).

On the other hand, animal bones were often used in knapping.

«We suggest that the use of tools drove the evolution of language, and it seems likely that «words» for things other than current emotional states would have been very useful for learning to knap,» lead author Thomas Morgan told Discovery News.

Morgan, University of Liverpool archaeologist Natalie Uomini and their team conducted a series of experiments in teaching contemporary humans the art of «Oldowan stone knapping.»

Stone knapping is not just banging rocks against each other.

The Maya were skilled at making pottery, carving jade, knapping flint, and making elaborate costumes of feathers.

This population, understandably, was not very skilled at stone knapping.

KNAP!

While an unsuspecting viewer could approach Walker's «Excavated» innocently enough, the narrative portrayed by the installation will eventually set in: baby - knapping, genital grabbing, defecating and other vulgarities.

They use strengths - based processes when engaging Aboriginal and Torres Strait Islander men, as well as stimulating the re-emergence of cultural practices such as yarning circles, stone knapping, reading landscapes, and healing traumas from the past.