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¿El mapa más antiguo del mundo? Expertos no se ponen de acuerdo

El Comercio, 16 de enero de 2014

Image: Keith Clarke. NewScientist.

Los arqueólogos sabían desde hace mucho de la existencia de un mural creado hace 8.500 años en Turquía, pero un reciente estudio ha puesto en tela de juicio si la pintura es un mapa de la ciudad de piedra de aquella época.

Lo que señala el arqueólogo Axel Schmitt, de la Universidad de California, en el estudio publicado por PLoS ONE es que la serie de puntos en la piedra “representa la erupción del Hasan Dagi, ubicado a 130 kilómetros al noreste de Çatalhöyük y, además, es la vista aérea de un plano de la ciudad”.

El artículo de la publicación especializada sugiere que existe evidencia de que en ese tiempo hubo actividad volcánica en la zona.

“No puedo asegurarlo con certeza, pero creo que la evidencia está aquí, ahora, a favor de que sí es un mapa”, señaló por su parte el cartógrafo de la Universidad de California, Keith Clarke, a la National Geographic.

Schmitt tiene trabajo que hacer: convencer a los científicos de que, en efecto, es un mapa real y no el patrón de una piel de leopardo, como sugieren algunos.

¿CUÁL ES EL MÁS ANTIGUO?
En España hay un supuesto mapa que habría sido dibujado hace 14.000 años -unos 5.000 años antes que el de Turquía- y hay otro en República Checa que dataría de hace 25.000 años.

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Aquí la noticia en NewScientist (9 de enero de 2014): Stone Age mural ups the stakes in quest for oldest map

Artículo completo en Plus ONE (8 de enero de 2014):

PlusONE: Identifying the Volcanic Eruption Depicted in a Neolithic Painting at Çatalhöyük, Central Anatolia, Turkey

A mural excavated at the Neolithic Çatalhöyük site (Central Anatolia, Turkey) has been interpreted as the oldest known map. Dating to ~6600 BCE, it putatively depicts an explosive summit eruption of the Hasan Dağı twin-peaks volcano located ~130 km northeast of Çatalhöyük, and a birds-eye view of a town plan in the foreground. This interpretation, however, has remained controversial not least because independent evidence for a contemporaneous explosive volcanic eruption of Hasan Dağı has been lacking. Here, we document the presence of andesitic pumice veneer on the summit of Hasan Dağı, which we dated using (U-Th)/He zircon geochronology. The (U-Th)/He zircon eruption age of 8.97±0.64 ka (or 6960±640 BCE; uncertainties 2σ) overlaps closely with 14C ages for cultural strata at Çatalhöyük, including level VII containing the “map” mural. A second pumice sample from a surficial deposit near the base of Hasan Dağı records an older explosive eruption at 28.9±1.5 ka. U-Th zircon crystallization ages in both samples range from near-eruption to secular equilibrium (>380 ka). Collectively, our results reveal protracted intrusive activity at Hasan Dağı punctuated by explosive venting, and provide the first radiometric ages for a Holocene explosive eruption which was most likely witnessed by humans in the area. Geologic and geochronologic lines of evidence thus support previous interpretations that residents of Çatalhöyük artistically represented an explosive eruption of Hasan Dağı volcano. The magmatic longevity recorded by quasi-continuous zircon crystallization coupled with new evidence for late-Pleistocene and Holocene explosive eruptions implicates Hasan Dağı as a potential volcanic hazard. (seguir leyendo)

 


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Mapa arqueológico de Angkor, Camboya

Uno de los hitos arqueológicos del 2007, según la revista Archaeology, fue la culminación del mapa arqueológico del monumento que ha tardado 10 años en realizar el proyecto Greater Angkor (GAP). Este mapa de la ciudad preindustrial más grande del mundo ha ayudado a dar pistas de las posibles causas del colapso de la ciudad, que posiblemente se debió a la sobrepoblación y a problemas con el medio ambiente y manejo de los recursos.

Archaeology, enero/febrero 2008: Greater Angkor, Cambodia

This computer reconstruction of Angkor Wat is based in part on a new map of the site and the vast urban landscape that surrounded it. (Courtesy Tom Chandler/Monash University). Archaeology.

The capital of a Khmer state that flourished between the ninth and fifteenth centuries, Cambodia’s Angkor is one of the most intensively studied sites in the world. But it continues to inspire more questions than answers, the most fundamental being why the sophisticated Khmer Empire collapsed. In 2007, research into the mysteries of the world’s largest preindustrial city reached a milestone with the completion of a 10-year mapping project, which yielded clues suggesting that the sprawling metropolis may have collapsed under self-induced environmental pressures related to overpopulation and deforestation.

«Angkor was a vast inhabited landscape…larger than anything previously known,» says Damian Evans, deputy director of the Greater Angkor Project (GAP) and lead author of the group’s findings. Their map covers more than 1,100 square miles, detailing thousands of features that were part of an elaborate irrigation system.

The GAP team combined previously existing ground surveys, aerial photos, and radar remote-sensing data provided by NASA’s Jet Propulsion Lab to create the comprehensive map. It shows an urban center surrounded by dispersed agricultural villages, local temples, and small reservoirs. The team found evidence of silted canals and breached waterworks that suggest the people of Angkor were eventually unable to maintain the vast irrigation system because of erosion and increased flooding. The map also shows the metropolis extended miles beyond the ruins within today’s Angkor Archaeological Park. «Extremely valuable archaeological material stretches far beyond the World Heritage zone,» Evans says.

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La revista PNAS (Proceedings) dedica un artículo muy completo sobre este mapa.

PNAS, 29 de junio de 2007: A comprehensive archaeological map of the world’s largest preindustrial settlement complex at Angkor, Cambodia

A new archaeological map of Greater Angkor. PNAS.

The great medieval settlement of Angkor in Cambodia [9th–16th centuries Common Era (CE)] has for many years been understood as a “hydraulic city,” an urban complex defined, sustained, and ultimately overwhelmed by a complex water management network. Since the 1980s that view has been disputed, but the debate has remained unresolved because of insufficient data on the landscape beyond the great temples: the broader context of the monumental remains was only partially understood and had not been adequately mapped. Since the 1990s, French, Australian, and Cambodian teams have sought to address this empirical deficit through archaeological mapping projects by using traditional methods such as ground survey in conjunction with advanced radar remote-sensing applications in partnership with the National Aeronautics and Space Administration (NASA)/Jet Propulsion Laboratory (JPL). Here we present a major outcome of that research: a comprehensive archaeological map of greater Angkor, covering nearly 3,000 km2, prepared by the Greater Angkor Project (GAP). The map reveals a vast, low-density settlement landscape integrated by an elaborate water management network covering >1,000 km2, the most extensive urban complex of the preindustrial world. It is now clear that anthropogenic changes to the landscape were both extensive and substantial enough to have created grave challenges to the long-term viability of the settlement. (seguir leyendo)