Pollen dating, is one of the lesser utilized methods archaeologists have to determine a relative chronology or timeframe for a certain event. Pollen dating can determine a relative time frame far earlier than radiocarbon dating is able. Although, because of influences such as pollen transportation by wind for thousands of miles and the abundance of certain kinds of pollen, radiocarbon dating is necessary to give absolute dates.

Pollen dating is done by comparing the pollen zones in different rock layers or strata, comparing older, deeper layers to newer ones on top. The pollen zone is the particular time frame where specific species of plants release more pollen into the air than others. Using this, archeologists can determine climate changes, deforestation, or changes in the use of land hundreds of years ago such as the association between European settlement in North America and an increase in the amount of ragweed pollen found. Specific locations can even be determined as the origins for many rare or uncommon pollens.

Pollen can come in a variety of distinct shapes and sizes depending on the plant it is coming from. These microscopic grains are incredibly sturdy with outer shells made from sporopollenin, an incredibly inert substance. This allows the pollen to stay intact for thousands of years, especially when preserved in bodies of water, peat or, lake sediment. Ireland’s bogs are full of sediments and pollen, with certain layers linked to events such as the eruption of Icelandic volcanoes in 1104, 1362, and 1510 and an agricultural shift after the Black Death.

By looking at the sedimentary build up of pollen at the microscopic level, 400-1000x magnification, the pollen grains can be identified and the taxa concentrations determined, which can paint a picture of the climate as it changed over time.

Pollen can also be collected from the inside of pottery such as pots and stone tools, trapped in the fabric of clothes, the the cracks of floors and walls, or on other archeological artifacts and features. This can be used to help determine the diets of a people, their crops, and the materials they used to build their homes. By looking at these specific pollen samples as well as the layer of accumulated pollen, researchers can develop a better understanding of the environment and biodiversity throughout the history of an area.

Pollen magnified

https://www.123rf.com/photo_84820593_stock-illustration-pollen-grains-from-different-plants-3d-illustration-they-are-factors-causing-hay-fever-and-allergic-.html

Two researchers taking core samples

https://www.crowcanyon.org/index.php/palynology

Extra Links:

https://www.jstor.org/stable/20210068?seq=1#metadata_info_tab_contents

https://www.encyclopedia.com/earth-and-environment/ecology-and-environmentalism/environmental-studies/pollen-analysis

Citations:

Hirst, K. Kris. “How Does Palynology Inform Paleoenvironmental Reconstruction?” ThoughtCo, ThoughtCo, 8 Mar. 2017, www.thoughtco.com/palynology-archaeological-study-of-pollen-172154.

“Picture Climate: How Pollen Tells Us About Climate.” National Climatic Data Center, www.ncdc.noaa.gov/news/picture-climate-how-pollen-tells-us-about-climate.

The Irish Times. “Pollen Dating Paints Picture of Our Past.” The Irish Times, The Irish Times, 24 Feb. 2013, www.irishtimes.com/news/pollen-dating-paints-picture-of-our-past-1.365947.

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Three fossilized hominid skulls were found near Herto, Ethiopia in 1997. The skulls were determined to be those of two adults and one child. The remains were too old to be dated using radiocarbon dating. In order to determine the age of the artifacts found at Herto (Figure 1), scientists performed argon-argon dating on volcanic rock that was found near the artifacts (Zielinski 2008).

Figure 1. A map showing the location of Herto, Ethiopia, the village the hominid skulls were found near.

There are multiple radiometric methods of dating artifacts. Some of these radiometric methods include radiocarbon dating, potassium-argon dating, uranium-series dating, and fission-track dating (Renfrew 2010:120-129). Potassium-argon dating, which measures the ratio of potassium-40 to argon-40, is one radiometric method, but this method of dating is not as precise as argon-argon dating. Scientists converted potassium-40 to argon-39. This allowed the scientists to use argon-argon dating. The volcanic rock analyzed by scientists at Herto were found to be around 154,000 to 160,000 years old (Zielinski 2008).

The hominid skulls found at Herto are important discoveries because at the time of their discovery, they were some of the oldest near-modern human remains on record (Graham 2003). Based on archaeological artifacts like the ones found at Herto, artists have created depictions of near-modern humans (Figure 2). The Homo sapiens remains found at Herto, which were distinct from Homo neanderthalensis remains, were given a subspecies name, Homo sapiens idaltu. Other artifacts from the same time period were found near the fossilized skulls. Some of these artifacts include stone tools and animal bones with marks from tools. Additionally, cut marks on the skulls are indicative of the mortuary practices and rituals of the early humans (Sanders 2003). These marks and tools, which include hand axes, help the people of today understand how Homo sapiens lived over 100,000 years ago.

Figure 2. An artist’s depiction of a near-modern human.

Scientists claim the analysis of the Herto hominid skulls supports claims made by molecular anthropologists. Before the discovery of the Herto artifacts, molecular anthropologists have claimed modern humans evolved out of Africa (Sanders 2003). The discovery of near-modern human skulls in Herto, Ethiopia supports this Out of Africa hypothesis. Before the discovery of the Herto artifacts, other Homo sapiens remains had been discovered in Ethiopia and other African countries. The ages of these other remains range from 80,000 years old to 130,000 years old (Sanders 2003). Since the discovery of the Homo sapiens idaltu fossils near Herto, remains found in Jebel Irhoud, Morocco have been found to be about 315,000 years old, making them the oldest Homo sapiens remains on record (Callaway 2017). While the Herto remains may no longer be considered the oldest Homo sapiens remains on record, the discovery was important in the understanding of the origins of Homo sapiens and illustrates the importance and usefulness of radiometric dating methods like argon-argon dating.

Additional Content

An article that details the importance of dating methods in the Herto discovery and other discoveries: https://www.smithsonianmag.com/history/showing-their-age-62874/

An article about the Jebel Irhoud Homo sapiens discoveries: http://www.sciencemag.org/news/2017/06/world-s-oldest-homo-sapiens-fossils-found-morocco

References Cited

Callaway, Ewen
2017 Oldest Homo sapiens fossil claim rewrites our species’ history. Electronic document,
https://www.nature.com/news/oldest-homo-sapiens-fossil-claim-rewrites-our-species-history-1.22114, accessed September 19, 2018.

Graham, Sarah
2003 Skulls of Oldest Homo sapiens Recovered. Electronic document,
https://www.scientificamerican.com/article/skulls-of-oldest-homo-sap/, accessed September 19, 2018.

Renfrew, Colin, and Paul Bahn
2010 Archaeology Essentials. 2nd ed. Thames & Hudson, New York.

Sanders, Robert
2003 160,000-year-old fossilized skulls uncovered in Ethiopia are oldest anatomically modern humans. Electronic document,
https://www.berkeley.edu/news/media/releases/2003/06/11_idaltu.shtml, accessed September 18, 2018.

Zielinski, Sarah
2008 Showing Their Age. Electronic document,
https://www.smithsonianmag.com/history/showing-their-age-62874/, accessed September 18, 2018.

Image Sources

Amos, Johnathan
2003 Oldest human skulls found. Electronic document,
http://news.bbc.co.uk/2/hi/science/nature/2978800.stm, accessed September 19, 2018.

Sanders, Robert
2003 160,000-year-old fossilized skulls uncovered in Ethiopia are oldest anatomically modern humans. Electronic document,
https://www.berkeley.edu/news/media/releases/2003/06/11_idaltu.shtml, accessed September 18, 2018.

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In the mid 1800’s Crystal skulls began to circulate, some even finding their way into museums – claiming to be made by pre-Columbian peoples. Although these allegedly magical artifacts raised suspicion among historians and archaeologists for almost a century, they remained in museum collections. However, in 1992 one notable example, The Smithsonian Skull, was donated anonymously to the British Museum, and this event finally moved American and British archaeologists to begin research that led to the debunking of these mysterious artifacts.

Though the Smithsonian Skull was donated anonymously, many other similar crystal skulls were traced back to the 19th century French antiquity dealer, Eugene Boban. Boban had sold the skulls to art dealers claiming they were ancient aztec artifacts, exploiting the imagination of the ignorant buyers. With this forged pre-Columbian provenance, the skulls found their way into both the British Museum and The Quai Branly Museum in Paris.

As research on these skulls commenced, the initial evidence of falsification was the fact that the Smithsonian skull had come from an undocumented site. Furthermore, as crystal can not be carbon dated, no absolute dating method had ever been used to test the authenticity of the skulls. However, archaeologists used relative dating to compare the style of real Aztec skull symbolism to the crystal skulls, and a discrepancy was found in representation of teeth. In the crystal skulls, teeth had been created in linear, symmetrical rows – unlike the more natural pattern of the Aztec designs. Archaeologists also used relative dating methods to compare surface etchings. On the surface of an authentic, Aztec, crystal goblet, etchings showed variance – signs of a handcrafted object. However, the crystal skull etchings showed the use of a rotary wheel, which was only introduced after the Spanish Conquest. The relative date Archaeologists had begun to consider of at least the late 1500’s, was then cross checked using an X-ray diffraction system. The researchers found leftover residue of silicon carbide: an abrasive material used for smoothing in stone carving workshops beginning in the 20th century. Lastly, iron-rich chlorite mineral traces that were found in the crystal of the skull suggested that the crystal material wasn’t even naturally occurring in the Yucatan region, but rather from Brazil or Madagascar.

    The story of the Smithsonian Skull highlights the importance of empiricism in archaeology. Though Babon did sell fake artifacts, he had also traded real ones – making it likely that he knew he was selling forges, but let his personal bias and motivations for profit allow him to look past this. On the other hand, British and American researchers had to look past their own possible, natural biases in order to question the authenticity of the crystal skulls – which up to this point had been ignorantly assumed to be pre-Columbian. Lastly, this series of events shows the importance of the use of multiple dating methods to cross check, and how relative dating can become crucial in artifacts that do not allow absolute dating methods.

The image above is an authentic pre-Columbian skull mask carved in stone from the 1st century AD.

The image above is the Smithsonian Skull sent to the British Museum in 1992.

Work Cited
“Ancient Costa Rica Stone Underworld Skull Deity Death Mask.” Busacca Gallery , www.busaccagallery.com/catalog.php?catid=157&itemid=6383.

Everts, Sarah. “Crystal Skulls Deemed Fake.” CEN RSS, American Chemical Society, 4 Mar. 2013, https://cen.acs.org/articles/91/i9/Crystal-Skulls-Deemed-Fake.html

“Is This Crystal Skull Really Ancient?” Smithsonian.com, Smithsonian Institution, www.smithsonianmag.com/videos/category/history/a-real-crystal-skull/.

“The Smithsonian Skull .” Chemical and Engineering News , https://cen.acs.org/articles/91/i9/Crystal-Skulls-Deemed-Fake.html

Additional Content
https://anthropology.si.edu/crystal_skulls/
http://www.britishmuseum.org/research/news/studying_the_crystal_skull.aspx

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Although tattoos were originally thought to have dated back to around 2,000 B.C to ancient Egyptian times, recent archaeological discoveries have carbon-dated tattoos to be approximately 5,200 years old. Due to such discoveries, the certainty of when tattoos first originated has become rather unclear. In Egyptian times, “the distribution of the tattooed dots and small crosses on the lower spine and right knee and ankle joints correspond to areas of strain-induced degeneration, with the suggestion that they may have been applied to alleviate joint pain and were therefore essentially therapeutic” (Lineberry). Archeological studies have shown that ancient Egyptian tattooing was primarily a practice reserved for women. Tattooing was used “during the very difficult time of pregnancy and birth. This is supported by the pattern of distribution, largely around the abdomen, on top of the thighs and the breasts” (Lineberry). It is believed that older Egyptian women would pass this tradition of tattooing down to the younger counterparts. The symbolic value of the tattoo in ancient Egypt differs drastically from Samoan culture and more parallely resembles ancient Japanese culture.  

While tattoos do not date back quite as far in Samoan culture as they do in Egyptian culture, tattooing was a long standing tradition that represented an individual’s rank within the tribe. Tattoos in Samoan culture were most often associated with men; however, “women too endured tattooing, but their patterns were typically smaller” (PBS). The men’s tattoos would, “forever celebrate their endurance and dedication to cultural traditions.”(PBS). Typically, Samoan tattoos started at a man’s mid-torso and extended downwards towards their feet. The process of receiving these tattoos was both an extremely painful and dangerous one. Besides the excessively high risk of infection, the men would experience massive amounts of pain, as the tattoos would typically take up to a year to heal completely. The entire tribe would come together to help support the man who received the tattoo. The tattoos needed to be cleaned daily and the men oftentimes needed help with daily tasks, for even just sitting and walking was rather painful.

While different cultures throughout the world have used tattooing as a way to symbolize their beliefs, it is important to note that although these cultures have tattooing in common, the symbolism behind the practice of tattooing differs from culture to culture. This does that mean that there are no similarities in tattooing practices across cultures. For example, Japan and Egypt both used some tattoos as protective symbols, while Samoa and Japan used certain tattoos to denote an individual’s rank (Kearns). Japan’s tattoo practice incorporates elements of both the Samoan and the Egyptian cultures, but still maintains its own uniqueness (Kearns).

Above is a picture of a traditional Samoan tattoo. One that begins mid-torso and continues downward.

Above is a corpse that has been mummified and the tattoos that are showing have been preserved over thousands of years.

Reference List

Kearns, Angel. “Inked and Exiled: A History of Tattooing in Japan.” Bodylore: Gender, Sex, Culture, Folklore, and the Body. February 28 2018. Web. <https://sites.wp.odu.edu/bodylore/2018/02/28/inked-and-exiled-a-history-of-tattooing-in-japan/>.

Lineberry, Cate. “Tattoos: The Ancient and Mysterious History.” Smithsonian.com. January 1 2007. Web. <https://www.smithsonianmag.com/history/tattoos-144038580/>.

PBS. “Skin Stories: The Art and Culture of Polynesian Tattoo.” PBS Thirteen. 2003. Web. <https://www.pbs.org/skinstories/history/>.

Additional Content

https://www.pbs.org/skinstories/history/

https://sites.wp.odu.edu/bodylore/2018/02/28/inked-and-exiled-a-history-of-tattooing-in-japan/

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Since it was rediscovered over 250 years ago, Pompeii has been an intriguing and popular destination for generations across the world. For its most recent resurgence, millennials have manifested their own captivation in site through the 2013 Bastille song about the city and a popular meme currently circulating around the internet. The meme, that began after CNN posted pictures from a dig site, shows an unnamed skeleton who appears to have initially escaped the volcanic ash, only to be then killed by a falling boulder. The irony of the situation inspired many to apply it to their own lives and it became a phenomenon on social media platforms.

A recent photo of an excavation site at Pompeii, Italy, most likely a similar setting to where the unnamed man was found. Photo provided by The Special Superintendency for the Archaeological Heritage of Naples and Pompeii, May 17, 2018.

However, in a Forbes article published in June, archaeologist Kristina Killgrove reports that through examining the skull of the skeleton, the archaeologists found that the man’s skull remained completely intact (Killgrove 2018). This helped them conclude that man had actually not been killed by the boulder, but instead, the upper part of the body had sunk during a previous excavation, causing it to appear that the boulder had been fatal. He most likely died due to asphyxiation.  Although this essentially discredits the meme, the study of the man after he was buried led the team to further understand the context of Pompeii and the fate of one of its citizens. This type of inspection–the study of how an organism is buried and the processes that affect it after burial–is called taphonomy, and it remains widely important in the fields of archaeology and paleontology to explain why we find certain fossils and why we don’t, and how that affects the greater scheme of studying the past life (Renfrew 2010:41).

An artificially fossilized lizard foot, evidence of the some of the new technology being used by archaeologists to better understand taphonomy. Photo provided by Evan Sattia, Field Museum/University of Bristol and Tom Kaye, Foundation for Scientific Advancement

Through greater advances in technology, archaeologists are investigating how to replicate the fossilizing process, in order to better examine and understand decaying, and how one organism becomes a fossil. Evan Sattia of the Field Museum in Chicago explains in a July article for Popular Science that his team is essentially “baking” samples in clay tablets at 3500 psi, which is roughly the temperature of the level of the Earth’s crust where fossils are found. By replicating the process, scientists are able to probe into what temperature, gas, and other environmental effects lead to the fossilizing process and what materials are able to survive, a breakthrough in understanding how we find fossils and why we find them.

Although it is sometimes overlooked, taphonomy is a crucial part of the entire archaeological process within a site. The fossils that are left behind, allow archaeologists to peek further into the past living and provide a greater context of the past culture and environment of an area. And as evidenced through technological advances, taphonomy will continue, and should continue, to grow and improve along with further discoveries.

Further Readings:

Curren, Thomas.

2017  Archaeology as Blood Sport: How an Ancient Mastodon Ignited Debate over Humans’ Arrival in North America. Los Angeles Times, December 22, 2017. http://www.latimes.com/local/california/la-me-cerutti-mastodon-20171222-htmlstory.html#, accessed September 16, 2018.

Pickrell, John.

2018  Here’s How Humans Can Make It as a Fossil. Reader’s Digest, February 15, 2018. https://www.rd.com/culture/human-fossils/, accessed September 16, 2018.

Reference List:

Blakemore, Erin.

  2018  To Understand Fossils, Scientists Are Baking Their Own. Popular Science, July 25, 2018. https://www.popsci.com/easy-bake-fossil, accessed September 16, 2018.

Killgrove, Kristina.

  2018  That Meme-Worthy Pompeii Skeleton? Not Crushed By A Block, His Skull Shows. Forbes, June 28, 2018. https://www.forbes.com/sites/kristinakillgrove/2018/06/28/that-meme-worthy-pompeii-skeleton-not-crushed-by-a-block-his-skull-shows/#7a375b9a1c61, accessed September 16, 2018.

Renfrew, Colin and Paul Bahn.

  2010  Archaeology Essentials. 2nd edition. Thames & Hudson, New York.

Images:

Blakemore, Erin.

  2018  To Understand Fossils, Scientists Are Baking Their Own. Popular Science, July 25, 2018. https://www.popsci.com/easy-bake-fossil, accessed September 16, 2018.

McGrath, Maryellen.

2018 Extraordinary discovery of the archaeological site of Pompeii. ABC News, May 19, 2018. https://abcnews.go.com/International/extraordinary-discovery-archaeological-site-pompeii/story?id=55237858, accessed September 16, 2018.

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