Showing posts with label maya. Show all posts
Showing posts with label maya. Show all posts

Monday, April 23, 2018

Evidence of the Importance of Animal Management for the Maya in Ceibal, Guatemala

Earliest isotopic evidence in the Maya region for animal management and long-distance trade at the site of Ceibal, Guatemala 
Authors: 
Sharpe et al 
Abstract: 
This study uses a multiisotope (carbon, nitrogen, oxygen, and strontium) approach to examine early animal management in the Maya region. An analysis of faunal specimens across almost 2,000 years (1000 BC to AD 950) at the site of Ceibal, Guatemala, reveals the earliest evidence for live-traded dogs and possible captive-reared taxa in the Americas. These animals may have been procured for ceremonial functions based on their location in the monumental site core, suggesting that animal management and trade began in the Maya area to promote special events, activities that were critical in the development of state society. Isotopic evidence for animal captivity at Ceibal reveals that animal management played a greater role in Maya communities than previously believed.

Wednesday, March 07, 2018

Reconstructing the Mayan Coastal Settlement at Vista Alegre



Authors:

Jaijel et al

Abstract:

Past coastal reconstruction is useful for understanding archaeological coastal settlements and predicting how coastal change might affect modern populations. The ancient Maritime Maya inhabitants of Vista Alegre in the northeastern Yucatan were active seafaring peoples. However, the past coastal landscape environmental history is unknown. Previous research concentrated on the fully terrestrial component of the site, and did not approach the issue from an earth sciences, sedimentological perspective. In this study, a sediment core campaign in the shallow offshore of Vista Alegre aimed to reconstruct the coastal and environmental changes that occurred over the past 3000 years, and specifically identify the changes in sea-level. Nine cores were analyzed using a multi-proxy approach including a range of sedimentological parameters such as granulometry, micropaleontology (foraminifera), radiocarbon dating, and loss on ignition. The sediment cores provided an archive of environmental changes related to sea-level change, anthropogenic influence, and shifting microenvironments which can be associated with cultural time periods. The environmental phases and shifts show some linkage to the archaeological chronology, suggesting an association between the environmental conditions and human activities. Sea-level changes and shifting shorelines have always been, and still are, a challenge for coastal settlements, and ancient sites can be a harbinger of what to anticipate in the future. In addition to this, current natural and anthropogenic pressures on coastlines are placing archaeological sites at increasing risk and thereby threatening this important scientific and cultural archive. Therefore, efforts to identify, characterize, and record natural and anthropogenic pressures prior to destruction are increasingly important.

Tuesday, March 06, 2018

LIDAR Finds Mayan Megapolis in Guatemalan Jungle

A vast Mayan megalopolis apparently lies hidden underneath all the trees, creepers and centuries of growth and soil in the Guatemalan forest -- and we might never have found it if not for the wonders of laser technology. The PACUNAM Foundation, which champions the use of scientific research to preserve cultural heritage, has scanned the jungles in the country using Light Detection and Ranging (LiDAR) technology and found an interconnected network of ancient cities. They discovered 60,000 previously unknown structures without having to cut down a single plant, and that discovery changes many things we thought we knew about the ancient civilization.

The sheer size of the megalopolis suggests that Mayan populations were bigger than we thought. Previous estimates put the Mayan people's population at around 5 million, but now it's possible that there were 10 to 15 million of them. The fact that the team discovered houses, pyramids, palaces and elevated highways even though Mayans didn't use wheels or relied of beasts on burden indicates that they had an organized workforce.

Friday, January 06, 2017

A 6th Century Volcanic Eruption Disrupted Mayan Civilization


Authors:

Nooren et al

Abstract:

A remarkably long period of Northern Hemispheric cooling in the 6th century CE, which disrupted human societies across large parts of the globe, has been attributed to volcanic forcing of climate. A major tropical eruption in 540 CE is thought to have played a key role, but there is no consensus about the source volcano to date. Here, we present evidence for El Chichón in southern Mexico as the most likely candidate, based on a refined reconstruction of the volcano’s eruption history. A new chronological framework, derived from distal tephra deposits and the world’s largest Holocene beach ridge plain along the Gulf of Mexico, enabled us to positively link a major explosive event to a prominent volcanic sulfur spike in bipolar ice core records, dated at 540 CE. We speculate that voluminous tephra fall from the eruption had a severe environmental impact on Maya societies, leading to temporary cultural decline, site abandonment, and migration within the core area of Maya civilization.

Thursday, August 18, 2016

Lessons From Mayan Astronomy


Author:

Loeb

Abstract:

The Mayan culture collected exquisite astronomical data for over a millennium. However, it failed to come up with the breakthrough ideas of modern astronomy because the data was analyzed within a mythological culture of astrology that rested upon false but mathematically sophisticated theories about the Universe. Have we learned the necessary lessons to prevent our current scientific culture from resembling Mayan Astronomy? Clearly, data collection by itself is not a guarantee for good science as commonly assumed by funding agencies. A vibrant scientific culture should cultivate multiple approaches to analyzing existing data and to collecting new data.

Friday, July 29, 2016

Water Tunnels Beneath Mayan Temple had Religious Function

Not long before his demise in 683 AD, the ancient ruler Pakal ordered what was one of the Mayan's most ambitious construction projects. The magnificent, nine-level Temple of the Inscriptions went on to house his body for centuries, but it was the intricate stone carvings found in the tomb that have inspired debate about the king's plans for the afterlife. Archaeologists have now unearthed a network of water tunnels beneath Pakal's tomb, which they say not only offers an indication of his intentions to float way to the underworld, but reframes theories about how the grand pyramid itself was built.

The stone slab that topped Pakal's 20-ton sarcophagus was covered with carvings appearing to depict the ruler's resurrection in the afterlife. It has since become an intensely studied example of classic Mayan artwork. In it, Pakal himself appears tilted backwards in front of a tree, surrounded by glyphs and cosmological signs.

This portrayal caught the eye of certain ancient alien theorists, who interpreted the slab to show Pakal at the controls of a spaceship making his way through the Milky Way (a full-size wooden replica even popped up at the International UFO Museum in Roswell, New Mexico).

But the discovery of the underwater tunnels beneath the Temple of the Inscriptions appears to suggest that Pakal's spirit was sent down the gurgler (taking the far-fetched spaceship theory along with it). The canals were found by researchers from Mexico's National Institute of Anthropology, who began digging at the site in 2012 after picking up anomalies under the ground with a geo-radar they feared could cause the pyramid to collapse.

Thursday, July 21, 2016

Climate had a big Impact on the Maya


Authors:

Akers et al

Abstract:

The stalagmite MC01 was recovered from Macal Chasm cave on the Vaca Plateau of Belize in 1995, and an initial paleoclimate interpretation was published in 2007. Additional uranium-thorium ages have extended the paleoenvironmental record back from 3250 to 5250 cal yr BP, and the stable isotope (δ18O and δ13C) record is dramatically improved by 660 new values. A series of major dry events (MDEs) evident in stable isotopes, ultraviolet-stimulated luminescence, and petrography began ~ 3100 cal yr BP, and the initiation of these events coincides with an increase in El Niño dominance and southern shift in the Intertropical Convergence Zone. Three MDEs, centered at 1750 cal yr BP (200 CE), 1100 cal yr BP (850 CE), and 850 cal yr BP (1100 CE) and found in other regional climate records, coincide with Maya sociopolitical changes. Residuals from regression of δ13C versus δ18O are interpreted as a proxy for maize cultivation and land clearing, with residual values gradually increasing at the start of Preclassic Period settlement (3950 cal yr BP/2000 BCE), peaking after 2250 cal yr BP (300 BCE) during major Maya development in the Late Preclassic and Classic Periods, and dropping to pre-Preclassic values after regional land abandonment (~ 850 cal yr BP/1100 CE). Regional Maya population growth and cultural expansion may have been aided by abnormally low precipitation variability, as stable isotope variability suggests the Late Preclassic through the Late Classic was the most stable precipitation regime of the past 4000 years. This additional research on MC01 complements other regional paleoenvironmental records that suggest that MDEs coincided with disruptions in Maya society from the Preclassic through the Postclassic Periods. Although it is clear that not all significant sociopolitical changes can be attributed to the MDEs, these events likely played an antagonistic role in social stability.

Friday, June 03, 2016

How did the Southeast Maya Survive Volcanic Eruptions?

Across the centuries, forming cooperative networks beyond cultural boundaries has been a way to overcome natural disasters.

A Nagoya University researcher and his leading international research group discovered a Great Platform built with different kinds of stone at the archeological site of San Andrés, El Salvador, and challenged the prevailing theory regarding the sociocultural development of Southeastern Maya frontier.

San Andrés is located in the Zapotitan Valley, El Salvador, known as Southeastern Maya zone. Archaeological investigation conducted during 40's and 90's has shown that San Andrés had long human occupation beginning from the Middle Preclassic (ca. 600 BC) until the Early Postclassic (ca. AD 1200), in which had role as political, economic and religious center during the Late Classic period (AD 600-900). As San Andrés has been affected by numerous explosive eruptions -- at least three or four -- during the past two millennia, archaeologists have been interested to understand the role of volcanic eruptions in human history.

Between February and May of 2016, the research group led by Assistant Prof. Akira Ichikawa of the Institute for Advanced Research and at the Graduate School of Letters, Nagoya University, made a new discovery that allowed them to reconsider the recovery process from the volcanic eruption of Ilopango (ca. AD 400-450), which was one of the greatest Holocene eruptions in Central America. Assistant Prof. Ichikawa explained: "We have discovered a masonry platform just above the ash caused by the Ilopango eruption in San Andrés, which could prove that people reoccupied in such a devastated area even immediately after the enormous disaster occurred."

Monday, April 11, 2016

How did the Maya Manage Their Water Resources?

Collection, storage and management of water were top priorities for the ancient Maya, whose sites in Mexico, Belize and Guatemala were forced to endure seven months out of the year with very little rainfall. As researchers expand their explorations of the civilization outside of large, elite-focused research site centers, aerial imagery technology is helping them locate and study areas that are showing them how less urbanized populations conserved water for drinking and irrigation. The NSF-supported research by Jeffrey Brewer, a doctoral student in the University of Cincinnati's Department of Geography, and Christopher Carr, a UC research assistant professor of geography, was presented at the 81st annual meeting of the Society of American Archaeology. The meeting takes place April 6-10, in Orlando, Florida.

Thursday, December 24, 2015

Archaeology of Cerén Shows a Different Side to the Maya

For decades scientists thought that, in order to maintain a prosperous and powerful empire along the territories which make up what today is El Salvador, Honduras, Guatemala, Belize and the southwest of Mexico, the Mayan elite must have exerted strict control over the nation’s people, customs and economy.

But new signs found at Cerén, an archaeological park located barely 35 kilometers west of San Salvador, tell a very different story of this civilization that emerged near 1,000 B.C. and developed until it collapsed in the sixteenth century.

Nicknamed “The Pompeii of the Americas”, Cerén’s archaeological remains were discovered in 1976 by Payson Sheets, an anthropologist with Colorado University at Boulder. The ruins existed under a five-meter thick layer of ash, generated by an eruption of the Loma Caldera volcano approximately 1,400 years ago.

Almost four decades after the find, a team of US and El Salvador archaeologists and anthropologists led by Sheets excavated the citadel and found hundreds of daily life objects preserved in excellent condition thanks to the protective ash cover. Scientists believe the volcano eruption was so strong that people were forced to abandon the city, leaving their belongings behind. “This makes Cerén one of the richest archaeological sites in the region,” Sheets says.

The data at the excavation site tells the story of a community that seemed to have plenty of freedom to make crucial decisions about family organization, religion and food crops, according to a story published in Latin American Antiquity.

Saturday, November 07, 2015

Mayan Pompeii From 660 AD/CE Gives Glimpse of Daily Village Life

A continuing look at a Maya village in El Salvador--frozen in time by a blanket of volcanic ash from 1,400 years ago--shows the farming families who lived there went about their daily lives with virtually no strong-arming by the elite royalty lording over the valley.
Instead, archaeological evidence indicates significant interactions at the village of Ceren took place among families, village elders, craftspeople and specialty maintenance workers. This research comes from a new University of Colorado Boulder (CU-Boulder) study, funded by the National Science Foundation (NSF).

Ceren is the best-preserved ancient Maya village in all of Latin America. In A.D. 660, the village was blasted by toxic gas, pummeled by lava bombs and then choked by a 17-foot layer of ash falling over several days after the Loma Caldera volcano, less than half a mile away, erupted.

Discovered in 1978 by CU-Boulder anthropology Professor Payson Sheets, Ceren has been called the "New World Pompeii." The degree of preservation is so great researchers can see marks of finger swipes in ceramic bowls, and human footprints in gardens that host ghostly ash casts of corn stalks. Researchers have also uncovered thatched roofs, woven blankets and bean-filled pots.

Some Maya archaeological records document "top-down" societies, where the elite class made most political and economic decisions, at times exacting tribute or labor from villages, said Sheets. But at Ceren, the villagers appear to have had free reign regarding their architecture, crop choices, religious activities and economics.

"This is the first clear window anyone has had on the daily activities and the quality of life of Maya commoners back then," said Sheets, who is directing the excavation. "At Ceren we found virtually no influence and certainly no control by the elites."

Friday, November 06, 2015

Evidence of the Lives of Mayan Lower Classes Through Their Bones

Most of what we know about Mayan civilization relates to kings, queens and their elaborate temples. To understand what life was like for the 99 percent, one researcher turned to ancient animal bones stored at the Florida Museum of Natural History.

Ashley Sharpe, a doctoral student at the museum on the UF campus, says the picture researchers have painted of the Maya people isn't broad enough.

"When you think about the Romans and the Greeks, we know a lot about all of the different social classes -- from the Caesars down to the commoners -- but although there were tens of thousands of middle-class and lower-income Maya in big cities, we still don't know much about the everyday lives of most people."

For the first time in Maya archaeology research, 22,000 animal remains at the museum, one of the largest collections of its kind outside of Central America, were used as clues about life in the Maya lower classes. The bones revealed that the civilization known for its art and astronomy also had political and economic systems that were more complex than previously thought - systems similar to modern societies. The details are described in a new study appearing online this month in the Journal of Anthropological Archaeology.

Thursday, September 03, 2015

The "Mayacene:" How the Maya's Impact on Their Environment


Evidence from the tropical lowlands of Central America reveals how Maya activity more than 2,000 years ago not only contributed to the decline of their environment but continues to influence today's environmental conditions, according to researchers at The University of Texas at Austin.

Synthesizing old and new data, researchers were the first to show the full extent of the "Mayacene" as a microcosm of the early anthropocene -- a period when human activity began greatly affecting environmental conditions.

"Most popular sources talk about the anthropocene and human impacts on climate since the industrial revolution, but we are looking at a deeper history," said lead author Tim Beach, the C.B. Smith Sr. Centennial Professor of Geography and the Environment. "Though it has no doubt accelerated in the last century, humans' impact on the environment has been going on a lot longer."

By looking at Maya impacts on climate, vegetation, hydrology and lithosphere from 3,000 to 1,000 years ago, researchers propose that the Maya's advanced urban and rural infrastructure altered ecosystems within globally important tropical forests.

The researchers identified six stratigraphic markers -- or "golden spikes" -- that indicate a time of large-scale change, including: "Maya clay" rocks; unique soil sequences; carbon isotope ratios; widespread chemical enrichment; building remains and landscape modifications; and signs of Maya-induced climate change.

"These spikes give us insight into how and why Mayas interacted with their environment, as well as the scope of their activity," said Sheryl Luzzadder-Beach, co-author and chair of the Department of Geography and the Environment.

Maya clay and soil sequences indicated erosion, human land-use changes and periods of instability. Soil profiles near wetlands revealed heightened carbon isotope ratios due to agriculture and corn production; and researchers noted a three- to fourfold increase in phosphorus throughout Maya-age sediments.

However, the most visual indication of human impact was found in building material remains and landscape modifications. Researchers believe that these clues reveal how the Maya used water management to adapt to climate change.

Saturday, July 18, 2015

1700 year Old PreColumbian Pyramid Comparable to El Mirador in MExico


Researchers discover immense pyramid in Mexico, larger than Teotihuacan’s Pyramid of the Sun. Researchers in Mexico have discovered a Pyramid that, according to initial measurements, is larger than the Great Pyramid of the Sun in Teotihuacan. Initial excavations were done in 2010.

The Pyramid, 75 meters in height, was explored by specialists from the National Institute of Anthropology and History (INAH) on the acropolis of Tonina, Chiapas, estimated to be around 1700 years old.

Emiliano Gallaga, director of the archaeological zone, explained that work has been done in the last two years, and by means of a “three-dimensional, researchers verified that in the northeastern part of the site, stands one of the largest construction in Mesoamerica, comparable in size only to great Mayan cities like Tikal and El Mirador in Guatemala.

Wednesday, April 29, 2015

How Drought Brought Down the Classical Maya Despite Climate Adaptations

Drought, agricultural adaptation, and sociopolitical collapse in the Maya Lowlands

Authors:

Douglas et al

Abstract:

Paleoclimate records indicate a series of severe droughts was associated with societal collapse of the Classic Maya during the Terminal Classic period (∼800–950 C.E.). Evidence for drought largely derives from the drier, less populated northern Maya Lowlands but does not explain more pronounced and earlier societal disruption in the relatively humid southern Maya Lowlands. Here we apply hydrogen and carbon isotope compositions of plant wax lipids in two lake sediment cores to assess changes in water availability and land use in both the northern and southern Maya lowlands. We show that relatively more intense drying occurred in the southern lowlands than in the northern lowlands during the Terminal Classic period, consistent with earlier and more persistent societal decline in the south. Our results also indicate a period of substantial drying in the southern Maya Lowlands from ∼200 C.E. to 500 C.E., during the Terminal Preclassic and Early Classic periods. Plant wax carbon isotope records indicate a decline in C4 plants in both lake catchments during the Early Classic period, interpreted to reflect a shift from extensive agriculture to intensive, water-conservative maize cultivation that was motivated by a drying climate. Our results imply that agricultural adaptations developed in response to earlier droughts were initially successful, but failed under the more severe droughts of the Terminal Classic period.

How the Maya Became the Maya

Development of sedentary communities in the Maya lowlands: Coexisting mobile groups and public ceremonies at Ceibal, Guatemala

Authors:

Inomata et al

Abstract:

Our archaeological investigations at Ceibal, a lowland Maya site located in the Pasión region, documented that a formal ceremonial complex was built around 950 B.C. at the onset of the Middle Preclassic period, when ceramics began to be used in the Maya lowlands. Our refined chronology allowed us to trace the subsequent social changes in a resolution that had not been possible before. Many residents of Ceibal appear to have remained relatively mobile during the following centuries, living in ephemeral post-in-ground structures and frequently changing their residential localities. In other parts of the Pasión region, there may have existed more mobile populations who maintained the traditional lifestyle of the preceramic period. Although the emerging elite of Ceibal began to live in a substantial residential complex by 700 B.C., advanced sedentism with durable residences rebuilt in the same locations and burials placed under house floors was not adopted in most residential areas until 500 B.C., and did not become common until 300 B.C. or the Late Preclassic period. During the Middle Preclassic period, substantial formal ceremonial complexes appear to have been built only at a small number of important communities in the Maya lowlands, and groups with different levels of sedentism probably gathered for their constructions and for public rituals held in them. These collaborative activities likely played a central role in socially integrating diverse groups with different lifestyles and, eventually, in developing fully established sedentary communities.

Monday, March 16, 2015

Yucatan Peninsula hit by Tsunami Between 1,500 and 900 Years ago


The eastern coastline of Mexico's Yucatan Peninsula, a mecca for tourists, may have been walloped by a tsunami between 1,500 and 900 years ago, says a new study involving Mexico's Centro Ecological Akumal (CEA) and the University of Colorado Boulder.

There are several lines of evidence for an ancient tsunami, foremost a large, wedge-shaped berm about 15 feet above sea level paved with washing machine-sized stones, said the researchers. Set back in places more than a quarter of a mile from shore, the berm stretches for at least 30 miles, alternating between rocky headlands and crescent beaches as it tracks the outline of the Caribbean coast near the plush resorts of Playa del Carmen and Cancun.

Radiocarbon dates of peat beneath the extensive berm indicate a tsunami, which may have consisted of two or even three giant waves, likely slammed the coastline sometime after A.D. 450. In addition, ruins of Post-Classic Mayan structures built between A.D. 900 and 1200 were found atop parts of the berm, indicating the tsunami occurred prior to that time.

Friday, May 30, 2014

Zircon Dust in Mayan Pottery *NOT* From Tierra Blanca Joven Eruption of lopango Volcano

Volcanic ash provenance from zircon dust with an application to Maya pottery

Authors:

Coffey et al

Abstract:

When analyzed using secondary ion mass spectrometry, dust-sized (less than 63 μm) zircon in distal ash deposits of the Tierra Blanca Joven (TBJ) eruption of Ilopango Volcano (El Salvador) yielded results consistent with ages obtained from those in proximal deposits. This finding indicates insignificant age sorting of zircon crystals during their dispersal in the TBJ ash plume. As a result, analysis of zircons may permit reliable source identification of distal tephra marker beds commonly found in terrestrial and marine environments. This technique was applied to test whether an enigmatic volcanic ash used to manufacture Late Classic Maya pottery from El Pilar is from distal TBJ ash deposits, a hypothesis supported by the location, extent, and timing of the TBJ eruption, and the matching high silica content and trace element ratios between TBJ glass and glass in the archaeological samples. The exclusively older than 1 Ma ages of the archaeological zircons compared with the dominantly ca. 0–30 ka ages of the TBJ zircons, however, rule out the TBJ eruption as the source of the pottery ash. The three analyzed archaeological pottery samples define two distinct zircon age distributions, indicating that the ash in the Maya pottery must be from multiple sources, which currently remain unidentified.

Tuesday, May 27, 2014

Mayans may Have Used a Greco-Roman Style Mortar


The use of pozzolanic materials in Maya mortars: new evidence from Río Bec (Campeche, Mexico)

Author:

Gillot

Abstract:

The use of pozzolanas to improve the performance of lime mortar is usually regarded as a major contribution of the Greco-Roman civilizations to mortar technology. While this remains unquestioned; recent investigations have shown that this practice was also known in Mesoamerica before the Spanish Conquest. The mortars produced in the Maya lowlands, in particular, have been shown to contain various compounds similar to those formed as a result of the reaction between lime and pozzolanas such as volcanic ash or other siliceous and/or aluminous materials. However, until recently, petrographic studies had failed to present direct evidence that the formation of these compounds was due to the addition of pozzolanas rather than to the use of a natural hydraulic lime. The microscopic analysis of mortar samples from the archaeological site of Río Bec in southeastern Campeche provides this evidence. The identification of pyroclastic material in the form of unaltered glass shards confirms, for the first time, the use of pozzolanic materials in ancient Maya mortars. Furthermore, the analysis suggests the use of other materials that potentially acted as pozzolanas such as phytoliths and argillaceous inclusions. The purpose of this paper is to present these new data and to discuss their significance for the understanding of Maya mortar technology.

Thursday, August 08, 2013

Amazingly Preserved Mayan Frieze Found in Holmul, Guatemala



Archaeologist Anya Shetler cleans an inscription below an ancient stucco frieze recently unearthed in the buried Maya city of Holmul in the Peten region of Guatemala. Sunlight from a tunnel entrance highlights the carved legs of a ruler sitting atop the head of a Maya mountain spirit.

The enormous frieze—which measures 26 feet by nearly 7 feet (8 meters by 2 meters)—depicts human figures in a mythological setting, suggesting these may be deified rulers. It was discovered in July in the buried foundations of a rectangular pyramid in Holmul.

Maya archaeologist Francisco Estrada-Belli and his team were excavating a tunnel left open by looters when they happened upon the frieze. "The looters had come close to it, but they hadn't seen it," Estrada-Belli said.

According to Estrada-Belli, the frieze is one of the best preserved examples of its kind. "It's 95 percent preserved. There's only one corner that's not well preserved because it's too close to the surface, but the rest of it isn't missing any parts," said Estrada-Belli, who is affiliated with Tulane University, Boston University, and the American Museum of Natural History and who is also a National Geographic Explorer. His excavations at Holmul were supported by the National Geographic Society/Waitt Grants Program.

Maya archaeologist Marcello Canuto agreed, calling the frieze "amazingly and beautifully preserved."