miércoles, 19 de agosto de 2015

Las "grandes losas" del dolmen de La Pastora proceden de Coria o Puebla


Dolmen de La Pastora - Valencina de la Concepción - Sevilla. iaph.es
 
Una "investigación geoarqueológica" detecta "bioerosión marina" en estas rocas y señala la hipotética procedencia de las losas

Las "grandes losas" utilizadas para construir el dolmen de La Pastora, enclavado en Valencina de la Concepción (Sevilla) y legado de las antiguas culturas que habitaron la cornisa del Aljarafe durante la Edad del Cobre, habrían sido extraídas del entorno de Coria del Río o Puebla del Río y transportadas hasta el emplazamiento del conocido monumento megalítico entre los años 3.510 antes de Cristo y el año 2.350 de la misma era, según un informe que firma el arqueólogo Juan Manuel Vargas y recogido por Europa Press. [...] 20minutos.es


Artículo relacionado: Marine bioerosion in rocks of the prehistoric tholos of La Pastora (Valencina de la Concepción, Seville, Spain): archaeological and palaeoenvironmental implications

Entrada relacionada

1st Chinese murals might date back more than 4,000 yrs


A close-up photo shows a piece of a mural. [Photo/chinadaily.com.cn]

A group of recently-discovered murals hinted that the basic production process and rendering techniques used to make Chinese murals might be more than 4,000 years old. Since 2011, continuous excavations by Chinese archaeologists have found some 200 pieces of colorful murals in the Shimao Ruins, the largest completed urban construction in China dating from the late Neolithic (4,600 - 4,000 years ago) age in Shenmu county, Shaanxi province.
The Shaanxi Provincial Institute of Archaeology recently issued a report on the discovery, saying that following lab experiments and analysis, the basic production process and rendering techniques used on the murals in Shimao Ruin were similar to those used to make frescoes dating from the Han Dynasty (202 BC – 220 AD) and later dynasties. This indicates that the process and techniques were in use more than 4,000 years ago.
Archaeologists found traces of pigment layers on a mural that indicates brush-like tools were used to make the mural, even though the brush is considered to have been invented by Meng Tian, a general in the Qin Dynasty (221 – 207 BC).
"The history of using the brush by Chinese people will be rewritten if the tool used to make the mural is confirmed to be a brush," experts said.
The experts also noted that the types of pigments used for the murals were made of glauconite, which was found in the sea, but the Shimao Ruin is located on the Loess Plateau far from the sea.
"The source of the pigment is also a concerned matter for further research," experts said.
According to the historical record, Chinese murals were used to decorate houses from early on and used for tombs as early as the Western Zhou Dynasty (1046 – 771 BC). The murals were found mainly in North China, which indicates that the region was the birthplace of the Chinese mural, experts said. china.org.cn/

Actualización 26-08-15Marcas de pinceladas descubiertas en pinturas murales podrían reescribir la historia del arte en China | Ancient Origins
Recientes descubrimientos realizados en las ruinas de una ciudad prehistórica podrían reescribir la historia del arte en China. Los arqueólogos que se encuentran trabajando en las ruinas del yacimiento Neolítico de Shimao, han identificado fragmentos de pinturas murales que muestran posibles marcas de brocha o pinceladas, lo que podría significar que el procedimiento básico de realización de pinturas murales en China se remonta a hace unos 4.000 años. Los historiadores generalmente atribuyen la invención del pincel al general Meng Tian en una época mucho más tardía, durante la dinastía Qin, que va del 221 a. C. al 207 a. C. 
Los expertos que se encuentran estudiando los restos del mural han observado lo que describen como marcas en las capas de pigmento, semejantes a las que dejarían una brocha o pincel al ser utilizados. Por otro lado, también resulta interesante el hecho de que algunos de los pigmentos incluyan en su composición glauconita, un mineral que procede de zonas costeras de China. Sin embargo, las ruinas de Shimao se encuentran en la Meseta de Loess, muchos kilómetros tierra dentro...


Entrada relacionada (2012)

 

Did Chucking Stones Make Us More Human?


Archaeologist Reid Ferring displays some possible projectiles. Photograph by Paul Salopek

A fossil site in the Republic of Georgia yields clues to humankind’s first missiles.

DMANISI, Georgia—Reid Ferring holds a rock in each hand. They are the size of hens’ eggs. They are oblong. They are grey. They are categorically ordinary. Aside from numbers inked onto their surfaces for cataloging purposes, they look like a quadrillion other natural stones scattered across the face of the Earth.

“The evidence is circumstantial,” Ferring, an American archaeologist, admits. “But we’ve got some good indications they were thrown.”

He is talking about prehistoric pitching.

Hundreds of such nondescript cobbles have been unearthed near the remains of prey animals at Dmanisi, an important hominin site in the forested hills of the former Soviet republic of Georgia. [...] news.nationalgeographic.com

Chimpanzees and monkeys have entered the Stone Age


 
We think of the Stone Age as something that early humans lived through. But we are not the only species that has invented it

In the rainforests of west Africa, the woodlands of Brazil and the beaches of Thailand, archaeologists have unearthed some truly remarkable stone tools.

It's not the workmanship that makes them special. If anything, a casual observer might struggle to even identify them as ancient tools. It's not their antiquity that's exceptional either: they're only about the same age as the Egyptian pyramids.

What makes these tools noteworthy is that the hands that held them weren't human.

These stone tools were wielded by chimpanzees, capuchins and macaques. The sites where they have been unearthed are the basis of a brand new field of science: primate archaeology.

The tools are crude. A chimpanzee or monkey stone hammer is hardly a work of art to rival the beauty of an ancient human hand axe. But that's not the point. These primates have developed a culture that makes routine use of a stone-based technology. That means they have entered the Stone Age. [...] bbc.com


Actualización 29-08-15: Algunos chimpancés ya están en la Edad de Piedra – emeequis
De acuerdo con un fascinante informe de Collin Barras, de la BBC, arqueólogos de África, Sudamérica y el sureste asiático han estado excavando crudas herramientas de piedra que datan de hace miles de años –herramientas que fueron fabricadas por primates no humanos.

Esto es algo extraordinario: “Las herramientas son crudas. Un martillo de piedra hecho por un chimpancé u otro mono difícilmente es una obra de arte que pudiera rivalizar la belleza de la antigua hacha de mano humano. Pero ese no es el asunto. Estos primates han desarrollado una cultura que hace uso rutinario de tecnología basada en la piedra. Esto significa que han entrado en la Edad de Piedra.”

Esto significa que tenemos evidencia muy sólida que sugiere que por lo menos algunos chimpancés están firmemente en la Edad de Piedra, reportó Upworthy.

Nuestra especie logró muchas cosas de alta importancia durante la Edad de Piedra. En esta etapa de nuestro desarrollo, que abarcó los primeros casi 200 mil años de existencia de nuestra especie y millones de años para las especies que nos precedieron, los humanos aprendimos a controlar el fuego, domesticar a los perros, construir casas, producir cerámica y construir canoas.

Algunos países, como Nueva Zelanda y el Reino Unido, han prohibido los experimentos con chimpancés y otros primates. Otros países, como España, incluso les han otorgado derechos humanos limitados.

Early Britons: Have we underestimated our ancestors?

Have we underestimated the first people to resettle Britain after the last Ice Age? Evidence from a variety of sources suggests that early Britons were more sophisticated than we could have imagined.

Archaeologists once thought that the story of the early hunter-gatherer Britons was lost to the mists of time.

The hunter-gatherers left almost no trace of their nomadic existence behind.

As a result, the stone-age settlers of ancient Britain were thought of as simple folk, living a brutal hand-to-mouth existence.

But now, evidence is emerging that turns those assumptions upside down. Archaeological sites all over the UK and northern Europe are producing evidence that paints these people in a very different light.

Thanks to this cutting-edge science, we now have an increasingly clear picture of prehistory, and the adaptable, culturally rich, and sophisticated people who inhabited these islands.

A BBC Horizon documentary, to screen on Wednesday, tells the story of this quest to understand the first Britons.

Some of these Mesolithic, or Middle Stone Age, people lived at Blick Mead, Wiltshire - a few miles away from the future site of Stonehenge. [...] bbc.com/

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