Sunday, February 12, 2012

Archaeology: What's Hot Now: Marshalltown Trowels

Archaeology: What's Hot Now
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Marshalltown Trowels
Feb 12th 2012, 11:09

One important piece of equipment that each archaeologist carries is his or her trowel. It's important to get a sturdy trowel with a flat blade that can be sharpened. In the US, that means only one kind of trowel: the Marshalltown, known for its reliability and longevity.

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Archaeology: What's Hot Now: Viking Settlement

Archaeology: What's Hot Now
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Viking Settlement
Feb 12th 2012, 11:09

Viking settlers lived not so much in villages, but rather on isolated, regularly spaced farmsteads surrounded by grain fields, and led by chieftainships with multiple farmsteads. In some areas, saeters, upland stations where livestock could be moved during summer seasons, were constructed, including dwellings, byres, barns, stables and other buildings associated with a year-round farmstead. This grazing method, called shieling, was part of the overall process of Norse agriculture called landnám.

A model Viking settlement had access to the sea with a reasonable boat access; a flat, reasonably well-drained area of a farmstead; and extensive grazing areas. The farming economy included barley, and domesticated sheep, goat, cattle, pig, and horse. Marine resources included seaweed, fish, shellfish and whale. Seabirds were exploited for their eggs and meat, and driftwood and peat was used to build fires and buildings.

Churches were small square buildings in the center of a circular churchyard. Dwellings, storage facilities and barns might be built of stone or stone-foundations; peat or turfs, or wood, or all three. Fuels used by the Norse included peat, peaty turf and wood; in addition for heating and building construction, much wood was used for iron smelting.

Viking Settlements

Sources

This glossary entry is a part of the Guide to Ancient Vikings and part of the Dictionary of Archaeology.

See the Viking bibliography for more research areas.

Adderley, W. P., Ian A. Simpson, and Orri Vésteinsson 2008 Local-Scale Adaptations: A Modeled Assessment of Soil, Landscape, Microclimatic, and Management Factors in Norse Home-Field Productivities. Geoarchaeology 23(4):500-527.

Barrett, James H., Roelf P. Beukens, and Rebecca A. Nicholson 2001 Diet and ethnicity during the Viking colonization of northern Scotland: Evidence from fish bones and stable carbon isotopes. Antiquity 75:145-154.

Buckland, Paul C., Kevin J. Edwards, Eva Panagiotakopulu, and J. E. Schofield 2009 Palaeoecological and historical evidence for manuring and irrigation at Garðar (Igaliku), Norse Eastern Settlement, Greenland. The Holocene 19:105-116.

Goodacre, S., et al. 2005 Genetic evidence for a family-based Scandinavian settlement of Shetland and Orkney during the Viking periods. Heredity 95:129-135.

Milner, Nicky, James Barrett, and Jon Welsh 2007 Marine resource intensification in Viking Age Europe: the molluscan evidence from Quoygrew, Orkney. Journal of Archaeological Science 34:1461-1472.

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Archaeology: What's Hot Now: Stable Isotopes for Dummies

Archaeology: What's Hot Now
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Stable Isotopes for Dummies
Feb 12th 2012, 11:09

The following is a vastly over-simplified discussion of why stable isotope research works. If you are a stable isotope researcher, the imprecision of the description will drive you mad. But it is a fairly accurate description of the natural processes which are being used by researchers in so very many interesting ways these days. A more precise description of this process is provided in the article by Nikolaas van der Merwe called the Isotope Story.

Forms of Stable Isotopes

All of the earth and its atmosphere is made up of atoms of different elements, such as oxygen, carbon, and nitrogen. Each of these elements has several forms, based on their atomic weight (the number of neutrons in each atom). For example, 99 percent of all carbon exists in the form called Carbon-12; but the remaining one percent carbon is made up of slightly different forms of carbon. Carbon-12 has an atomic weight of 12, which is made up of 6 protons and 6 neutrons. The 6 electrons don't really count towards the weight, because they're so light. Carbon-13 still has 6 protons and 6 electrons, but it has 7 neutrons; and Carbon-14 has 6 protons and 8 neutrons, which is basically too heavy to hold together in a stable way, so it is radioactive.

All three forms react the exact same wayâ€"if you combine Carbon with Oxygen you get Carbon Dioxide, no matter what the number of neutrons. In addition, Carbon-12 and Carbon-13 forms are stableâ€"that is to say, they don’t change over time. Carbon-14, on the other hand, is not stable, but instead decays at a known rateâ€"because of that, we can use its remaining ratio to Carbon-13 to calculate radiocarbon dates, but that’s another issue entirely.

Constant Ratios

The ratio of Carbon-12 to Carbon-13 is constant in earth’s atmosphere. There are always 100 12C atoms to one 13C atom. During the process of photosynthesis, plants absorb the carbon atoms in earth’s atmosphere, water, and soil, and store them in the cells of their leaves, fruits, nuts, and roots. But as a result of the photosynthesis process, the ratio of the forms of carbon gets changed as it is being stored. The alteration of the chemical ratio is different for plants in different parts of the world. For example, plants that live in regions with lots of sun and little water have relatively fewer 12C atoms in their cells (compared to 13C) than do plants that live in forests or wetlands. This ratio is hardwired into the plant’s cells, andâ€"here’s the best partâ€"as the cells get passed up the food chain (i.e., the roots, leaves, and fruit are eaten by animals and humans), the ratio of 12C to 13C) remains virtually unchanged as it is in turned stored in bones, teeth and hair of the animals and humans.

In other words, if you can determine the ratio of 12C to 13C in an animal's bones, you can figure out what kind of climate the plants it ate during its lifetime came from. The measuring takes mass spectrometer analysis; but that’s another story, too.

Carbon is not by a long shot the only element used by stable isotope researchers. Currently researchers are looking at measuring the ratios of stable isotopes of oxygen, nitrogen, strontium, hydrogen, sulfur, lead, and many other elements that are processed by plants and animals. That research has led to a simply incredible diversity of human and animal dietary information.

More on Stable Isotopes

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Archaeology: What's Hot Now: La Iglesia (The Church)

Archaeology: What's Hot Now
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La Iglesia (The Church)
Feb 12th 2012, 11:09

This building was named la Iglesia (the Church) by the Spanish, probably simply because it was located right next to the Nunnery. This rectangular building is of classic Puuc construction with an overlay of central Yucatan styles (Chenes). This is probably one of the most frequently drawn and photographed buildings at Chichén Itzá; famous 19th century drawings were made by both Frederick Catherwood and Desiré Charnay. The Iglesia is rectangular with a single room inside and an entrance on the west side. The outside wall is completely covered with veneer decorations, which extend clear up to the roof comb. The frieze is bounded at ground level by a stepped fret motif and above by a serpent; the stepped fret motif is repeated on the bottom of the roof comb. The most important motif of the decoration is the Chac god mask with a hooked nose standing out on the corners of the building. In addition, there are four figures in pairs between the masks including an armadillo, a snail, a turtle, and a crab, who are the four "bacabs" who hold up the sky in Maya mythology.

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Saturday, February 11, 2012

Archaeology: What's Hot Now: Wine and its Origins

Archaeology: What's Hot Now
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Wine and its Origins
Feb 11th 2012, 11:09

Wine is an alcoholic beverage made from grapes; and depending on your definition of "made from grapes" there are at least two independent inventions of the lovely stuff. The oldest known possible evidence for the use of grapes as part of a wine recipe with fermented rice and honey was in China, about 9,000 years ago. Two thousand years later, the seeds (or I suppose pips) of what became the European wine-making tradition began in western Asia.

Archaeological Evidence

Archaeological evidence of wine-making is a little difficult to come by, of course; the presence of grape seeds, fruit skins, stems and/or stalks in an archaeological site does not necessarily imply the production of wine. Two main methods of identifying wine making that are accepted by scholars are identifying domesticated stocks, and discovering grape processing evidence.

The main change incurred during the domestication process of grapes is that the domesticated forms have hermaphrodite flowers. What that means is that the domesticate forms of the grape are able to self-pollinate. Thus, the vintner can pick traits she likes and, as long as she keeps them all on the same hillside, she need not worry about cross-pollination gumming up the works.

The discovery of parts of the plant outside its native territory is also accepted evidence of domestication. The wild ancestor of the European wild grape (Vitis vinifera va. sylvestris) is native to western Eurasia between the Mediterranean and Caspian seas; thus, the presence of V. vinifera outside of its normal range is also considered evidence of domestication.

Chinese Wines

But the story really must start in China. Residues on pottery sherds from the Chinese early Neolithic site of Jiahu have been recognized as coming from a fermented beverage made of a mixture of rice, honey and fruit, radiocarbon dated to ~7000-6600 BC. The presence of fruit was identified by the tartaric acid/tartrate remnants in the bottom of a jar, familiar to anyone who drinks wine from corked bottles today. Researchers could not narrow the species of the tartrate down between grape, hawthorn, or longyan or cornelian cherry, or a combination of two or more of those. Grape seeds and hawthorn seeds have both been found at Jiahu. Textual evidence for the use of grapes (but not grape wine) date to the Zhou Dynasty (ca 1046-221 BC).

If grapes were used in wine recipes, they were from a wild grape species native to China-there are between 40 and 50 different wild grape species in China-not imported from western Asia. The European grape was introduced into China in the second century BC, with other imports resulting from the Silk Road.

Western Asia Wines

The earliest firm evidence for wine-making to date in western Asia is from the Neolithic period site called Hajji Firuz, Iran, where a deposit of sediment preserved in the bottom of an amphora proved to be a mix of tannin and tartrate crystals. The site deposits included five more jars like the one with the tannin/tartrate sediment, each with a capacity of about 9 liters of liquid. Hajji Firuz has been dated to 5400-5000 BC.

Sites outside of the normal range for grapes with early evidence for grapes and grape processing in western Asia include Lake Zeriber, Iran, where grape pollen was found in a soil core just before ~4300 cal BC. Charred fruit skin fragments were found at Kurban Höyük in southeastern Turkey by the late 6th-early 5th millennia BC.

Wine importation from western Asia has been identified in the earliest days of dynastic Egypt. A tomb belonging to the Scorpion King (dated about 3150 BC) contained 700 jars believed to have been made and filled with wine in the Levant and shipped to Egypt.

European Wine Making

In Europe, wild grape (Vitis vinifera) pips have been found in fairly ancient contexts, such as Franchthi Cave, Greece (12,000 years ago), and Balma de l'Abeurador, France (about 10,000 years ago).

Excavations at a site in Greece called Dikili Tash have revealed grape pips and empty skins, direct-dated to between 4400-4000 BC, the earliest example to date in the Aegean.

A wine production installation dated to ca. 4000 cal BC has been identified at the site of Areni 1 in Armenia, consisting of a platform for crushing grapes, a method of moving the crushed liquid into storage jars and (potentially) evidence for the fermentation of red wine.

Sources

Barnard H, Dooley AN, Areshian G, Gasparyan B, and Faull KF. 2011. Chemical evidence for wine production around 4000 BCE in the Late Chalcolithic Near Eastern highlands. Journal of Archaeological Science 38(5):977-984.

Broshi, Magen 2007 Date Beer and Date Wine in Antiquity. Palestine Exploration Quarterly 139(1):55-59.

Brown, A. G., I. Meadows, S. D. Turner, and D. J. Mattingly 2001 Roman vineyards in Britain: Stratigraphic and palynological data from Wollaston in the Nene Valley, England. Antiquity 75:745-757.

Cappellini E, Gilbert M, Geuna F, Fiorentino G, Hall A, Thomas-Oates J, Ashton P, Ashford D, Arthur P, Campos P et al. 2010. A multidisciplinary study of archaeological grape seeds. Naturwissenschaften 97(2):205-217.

Figueiral I, Bouby L, Buffat L, Petitot H, and Terral JF. 2010. Archaeobotany, vine growing and wine producing in Roman Southern France: the site of Gasquinoy (Béziers, Hérault). Journal of Archaeological Science 37(1):139-149.

Isaksson S, Karlsson C, and Eriksson T. 2010. Ergosterol (5, 7, 22-ergostatrien-3[beta]-ol) as a potential biomarker for alcohol fermentation in lipid residues from prehistoric pottery. Journal of Archaeological Science 37(12):3263-3268.

Koh AJ, and Betancourt PP. 2010. Wine and olive oil from an early Minoan I hilltop fort. Mediterranean Archaeology and Archaeometry 10(2):115-123.

McGovern, P., D.L. Glusker, L.J. Exner, and M.M Voight. 1996. Neolithic resinated wine. Nature 480-481.

McGovern, Patrick E., et al. 2004 Fermented Beverages of Pre- and Proto-Historic China. Proceedings of the National Academy of Sciences 101(51):17593-17598.

Miller, Naomi F. 2008 Sweeter than wine? The use of the grape in early western Asia. Antiquity 82937-946.

Valamoti, S. M., M. Mangafa, Ch. Koukouli-Chrysanthaki, and D. Malamidou 2007 Grape-pressings from northern Greece: the earliest wine in the Aegean? Antiquity 81(311):54-61.

Origins and Ancient History of Wine, highly recommended.

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Archaeology: What's Hot Now: Hisarlik (Turkey)

Archaeology: What's Hot Now
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Hisarlik (Turkey)
Feb 11th 2012, 11:09

Definition:

Hisarlik is the modern name for the ancient site of Troy, located in what is now Turkey. First occupied during the Early Bronze Age, 3000 BC, but certainly most famous as the location of Homer's stories of the Late Bronze Age Trojan War, which occurred either at the time of the level known as Troy VI (1800-1275 BC) or Troy VII (1275-1100 BC).

The status of the site as an important regional capital of western Anatolia during the Late Bronze Age has come under some discussion. Because of Hisarlik's connection with Homer, the site has perhaps unfairly been intensively debated. But the site was likely a pivotal one for its day, and, based on Manfred Korfmann's studies, may well be the historic capital of Wilusa.

Archaeology at Hisarlik

Test excavations were first conducted at Hisarlik by railroad engineer John Brunton in the 1850s and archaeologist/diplomat Frank Calvert in the 1860s. Both lacked the connections and money of their much-better known associate, Heinrich Schliemann, who excavated at Hisarlik between 1870 and 1890. Wilhelm Dorpfeld excavated there between 1893-1894, and Carl Blegen in the 1930s. In the 1980s, a new collaborative team started at the site led by Manfred Korfmann of the University of Tubingen.

Sources

Archaeologist Berkay Dinçer has several excellent photographs of Hisarlik on his Flickr page.

Easton, D. F., J. D. Hawkins, A. G. Sherratt, and E. S. Sherratt 2002 Troy in recent perspective. Anatolian Studies 52:75-109.

Jablonka, Peter and C. B. Rose 2004 Late Bronze Age Troy: A Response to Frank Kolb. American Journal of Archaeology 108(4):615-630.

Kolb, Frank 2004 Troy VI: A Trading Center and Commercial City? American Journal of Archaeology 108(4):577-614.

This glossary entry is part of the Dictionary of Archaeology. Any mistakes are the responsibility of Kris Hirst.

Also Known As: Ilion (Early Iron Age name), Troy, Ilium Novum

Alternate Spellings: Hissarlik

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Friday, February 10, 2012

Archaeology: What's Hot Now: Seriation

Archaeology: What's Hot Now
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Seriation
Feb 10th 2012, 11:08

Next, we break apart the bars, and align them so that all of the same colored bars are positioned vertically next to the others. Horizontally, the bars still represent the percentages of musical recording types in each of the junkyards. What this step does is create a visual representation of the qualities of the artifacts, and their co-occurrence at different junkyards.

Notice that this figure does not mention what kind of artifacts we're looking at, it just groups similarities. The beauty of the seriation system is that you don't necessarily have to know the dates of the artifacts at all, although it helps to know which is earliest. You derive the relative dates of the artifacts--and the junkyards -- based on the relative frequencies of artifacts within and between sites.

What the early practitioners of seriation did was use colored strips of paper to represent the percentages of artifact types; this figure is an approximation of the descriptive analytical technique called seriation.

Sources and Further Information

See the bibliography for a list of sources and further reading.

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