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Crazy Beliefs

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This cartoon came to my attention on Facebook:

Some may be expecting me to make a point in favor of a particular political party. But my thought when seeing this was just how much the beliefs that some people have across the political and economic spectrums, about political and economic matters, are comparable to the kinds of religious beliefs that would get most people thinking “NUT.”

Paul Tillich focuses particular attention in his book The Dynamics of Faith on the way that “faith” in one's nation or political party becomes idolatrous, substituting in place of the truly ultimate something which is less than ultimate.

How close are the parallels to religion in the political and economic devotion of human beings (and Americans in particular, thinking of my own immediate context)? Do people turn only to particular news sources or types of sources, much as ancient Israelites sought prophets who said what they wanted to hear rather than what they needed to hear? Do people have a blind and irrational faith that if they choose the right president, jobs will be created, gas prices will fall, and other things outside of a president's control will nonetheless occur as a result?

It is a well-known fact that we quickly label views we disagree with as “nuts” but are rarely able to see how our own beliefs look from the perspective of others. Perhaps more of us need to publicly present our views, and listen closely enough to hear the judgment on our sanity which others pass as a result, and ask what we can learn from what they say (hopefully out loud, since in real life we do not have the benefit of cartoon thought bubbles).

I am not suggesting that all views are equally worthy of respect, nor even that the label “crazy” might not be apt on occasion. I am simply highlighting that everyone has views which seem completely ludicrous and insane to someone else. And unless we are open to receiving correction and constructive criticism, our chances of sidestepping actual craziness is that much smaller – as I emphasized here on this blog not that long ago.

Are there any beliefs which you hold that you know seem crazy to others? Why do you persist in holding them? What beliefs do others hold that seem crazy to you? Are you able to understand why they do not seem that way to them? And are labels related to lack of sanity used to frequently and inappropriately?


"Time Team" to End

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It has been announced that after some 20 years on the air, the once-ground-breaking and highly popular archaeology 'reality show' Time Team is being wound down by its producers, British TV sytation Channel 4 (Tara Conlan, 'Channel 4 consigns Time Team to TV history', The Guardian, Saturday 20 October 2012). There will be one more season of 13 episodes running into 2013, and then production will cease. There is a response to the news from its originator and producer Tim Taylor here. The show was always controversial, but there is no doubt that it brought 'dirt archaeology' into the public consciousness in a way other programmes had not.

Of course the problem was that many people thought watching a few episodes was suffice to understand all about archaeology. The programme also attracted criticism in some circles because it did not always follow the PAS-script and talked openly of the erosive effects of artefact hunting and the difference between hoiking out metal objects when a box of electronics beeps and real archaeology. A typical example of tekkie grouching can be found in comments on the Past Horizons website by one Jerry Morris:
Metal detectorists can show the public more finds over a very much shorter period than Time Team and got very little thanks for their contribution when they tried to participate. If Metal detectorists did find anything Time Team latched on to the find like leaches as if it was theirs [...] Best Wishes to any new style productions and perhaps its worth having a look at the old "Two Men in a trench"serious. that took advantage of the knowledge and finds of responsible detectorists.
The metal detector is a tool (one of many) and there really is no need why the TV programme should be fawning over its users any more than a mechanical excavator driver, mattock user or the girl with a tube of glue that sticks the pots together.  It seems to me that the PAS and its "revealing secret treasures" approach has a lot to answer for in Britain as "archaeological outreach" when it becomes reduced to a race to see "who can show the British public more and more findds" hoiked from the archaeological record.


P. P. Funari, A. Pollini, Mercato. Le Commerce dans les mondes grec et romain

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mercato.gif

Pedro Paulo Funari, Airton Pollini (éd.), Mercato. Le Commerce dans les mondes grec et romain, Paris, 2012.

Éditeur : Les Belles Lettres
Collection : Signets Belles Lettres 19
XXVIII - 316 pages
ISBN : 978-2-251-03019-7
14,50 €

Précédé d'un entretien avec Jean Andreau

Ceci n'est pas un livre sur les footballeurs. Mercato, mot italien pour le marché, est utilisé en français en référence au « marché » des joueurs de foot et il n'est pas question ici de rapprocher ces transactions modernes au commerce des personnes dans l'Antiquité. Pourtant, l'on trouve de tout sur les étals des Anciens : des esclaves bien sûr, mais aussi des fruits, des légumes, des chevaux, des professeurs, des poètes, des petites filles et parfois des hommes d'affaires véreux. Au cœur de la cité grecque et de la ville romaine, l'agora grecque ou le forum romain ont aussi inspiré une réflexion économique, sociologique et philosophique, souvent différente de la nôtre.
Critiques, élogieux, ironiques voire sarcastiques, les plus de cent extraits de Mercato offrent un joyeux aperçu du marché antique sous toutes ses facettes, sociales, politiques, religieuses mais aussi pratiques et comiques. Évoquer l'économie antique, en percevoir l'altérité, c'est plonger dans la vie quotidienne des Anciens, mais également accroître notre esprit critique et acquérir un regard plus avisé sur le monde contemporain. Consommez intelligent et faites vos courses avec Aristophane, Cicéron et Platon !

Lire la suite...

P. Brown, Through the Eye of a Needle

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Peter Brown, Through the Eye of a Needle: Wealth, the Fall of Rome, and the Making of Christianity in the West, 350-550 AD, Princeton (N. J.), 2012.

Éditeur : Princeton University Press
806 pages
ISBN : 9780691152905
$ 39.95

Jesus taught his followers that it is easier for a camel to go through the eye of a needle than for a rich man to enter heaven. Yet by the fall of Rome, the church was becoming rich beyond measure. Through the Eye of a Needle is a sweeping intellectual and social history of the vexing problem of wealth in Christianity in the waning days of the Roman Empire, written by the world's foremost scholar of late antiquity.
Peter Brown examines the rise of the church through the lens of money and the challenges it posed to an institution that espoused the virtue of poverty and called avarice the root of all evil. Drawing on the writings of major Christian thinkers such as Augustine, Ambrose, and Jerome, Brown examines the controversies and changing attitudes toward money caused by the influx of new wealth into church coffers, and describes the spectacular acts of divestment by rich donors and their growing influence in an empire beset with crisis. He shows how the use of wealth for the care of the poor competed with older forms of philanthropy deeply rooted in the Roman world, and sheds light on the ordinary people who gave away their money in hopes of treasure in heaven.
Through the Eye of a Needle challenges the widely held notion that Christianity's growing wealth sapped Rome of its ability to resist the barbarian invasions, and offers a fresh perspective on the social history of the church in late antiquity.

Lire la suite...

Exporting Hoikery: UK Detectorists, "Let's go and Loot Brazil"

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On the UK and European Metal Detecting Forum they are discussing the possibilities of going to loot archaeological sites in Brazil at the Christmas break. London resident rogargaro15 (Sat Oct 20, 2012 3:31 am) is going and invites people to join him:
 hey guys, near christmas i will be going to brazil do some metal detecting, it's not too bad there, it's not very old, but is the same age as usa is. you can find easily some stuff from the 1700s and the best is that metal detecting is very rare there,  meaning that most places are undiscovered yet, filled with treasures =)  and other, there are almost no laws against metal detecting, as some people there dont even know what it is. lol
So, basically this guy is proposing to take a metal detector to hoik metal artefacts out of the pre-independence and colonial sites of the region? To take away pieces of Brazil's early past? And they think they'll probably get away with it because the ignorant brown-skinned folk over there are so stupid they "dont even know what it is ("lol")" to have people from abroad loot archaeological sites for collectables.  Not yet. Why, the native are so brown-skinned-ignorant they say that there are "almost" no laws against metal detecting. Says who? I can see on the legislation at least one hurdle to the plan. What does "almost no laws" mean? In any case, is it really just the "law" which is important in such things?  A lot of things which are not right in the eyes of most people are legal (or not illegal).

Just who do these people think they are? Just because British law is so pathetically inadequate to save anything much less exhaulted from Stonehenge from being bulldozed or looted away does not mean that this gives Brits a licence to loot and destroy sites all over the world with the same gay abandon as they treat the archaeological heritage at home, on the grounds that the unenlightened natives are so ignorant that they will not stop them. That is neo-colonialism at its worst - I thought the Brits at least would have that behind them. Obviously however from the responses the invitation got colonial attitudes are still thriving in certain circles of British society.

Vignette: Brazilian border guards, look out for this man if he leaves the country carrying a metal detector and a big bag (click here to enlarge image). 


" Southern Urals State University Students Association for the Advancement of Archaeological and Anthropological Studies"

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I missed this post when it was published, but Doug Smith has recently taken a look at the webpage of the so-called 'Southern Urals State University Students Association for the Advancement of Archaeological and Anthropological Studies'. Ostensibly this is a webpage of an academic institution in Russia which is now selling off surplus artefacts from its teaching collections to raise funds for "advancing archaeological and anthropological studies" through a house on a leafy street on an island in Washington State in the US. As Doug spotted, the artefacts they are selling are - to put it mildly - on the whole, if not wholly dubious-loooking (my favourite are the "Victorian Europe" ones)*. According to the website:
the Roman artifacts were found principally in Romania (literally "land of the Romans"), Bulgaria, and Syria. The Sumerian artifacts were unearthed in both Turkey and Syria, which [...] constituted the majority of the sites of the ancient Sumerian civilizations [sic]. The Egyptian antiquities were part of a collection amassed in the mid-1960's, at the height of Soviet influence in Egypt. As well, additional specimens are occasionally acquired from other institutions and dealers in Eastern Europe and the Eastern Mediterranean. 
These poeople have been at it a long time, I recall being pointed at them by artefact collectors years ago in the pre-blog days as an example of "how [other] academics can be involved in the antiquities trade". I do not expect I was very polite about them in response, wherever that was. Anyway, buying antiquities from suppliers with goods like these seems to me to be a way of collecting which is not likely to be contributing very much to the erosion of the archaeological record. They give you a COA (Certficate of Authenticity) issed by the South Urals University (is in in Cyrillic?).


[* Even here, most of the artefacts do not look to me very likely to be as-described. The 1937 two-mark coin is probably original, but the hype not really worth paying for. Such a coin can be got here in Europe for about ten Euros in that condition, they are selling it for 70 dollars.]

UK Treasure Rewards to Fall Victim of Government Cuts?

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March in Glasgow City centre
MORE than 110,000 people took to the streets ­yesterday in a mass protest against Government cuts. Campaigners chanted, sang and waved placards and balloons as they marched in Glasgow, London and Belfast to call for an end to austerity measures. The A Future That Works march called for changes in economic policies and gave out the message that austerity is ­simply ­failing, the Government is making life ­desperately hard for millions of people because of pay cuts for workers, while the rich are given tax cuts (Lauren Crooks, 'Thousands join protests across UK in bid to stop Con-Dem cuts and protect their future', The Daily Record and Sunday Mail 21st October 2012).

This has a portable antiquities contexttoo. regular followers of the antiquitist blogosphere will be aware that the austerity measures in European states such as Greece, Spain and Italy have been prompting the leading pro-collecting lobbyists in the US to predict that the end of state custodianship of the archaeological heritage will be coming to an end. For excample, one analyst, based on information from MSN and Fox News sees the future of Europe and its cultural heritage in entirely black, if not apocalyptic tones:
Greece:  Greek voters deal blow to parties that have govern..., The Collapse of Cultural Property Nationalism Say your prayers': Attempts to form new Greek gove..., Greeks withdraw $894 million in a day: Is this beg..., Facing Reality, Greek Archaeologists Out of TouchGreece Mandates High Judge As Caretaker PM Ahead ..., Greece warns of going broke as tax proceeds dry up...,  Wall Street prepares for Greece exit from Eurozone...,   Italy: State Control Collapsing, Bad laws - Failed policies, Spain:  Spain Feels the Pain, The New Cultural Reality.

Of course these people are expecting that this will mean that lots of stuff will be soon coming onto the open market instead of being housed in public collections funded from the public purse.  Perhaps they are also hoping that as the cuts bite into citizens' disposable income and more and more collectable objects enter the market instead of going to public collections, prices will drop and there will be profits to be made in markets outside the zone directly afected by the crises.

But where is this, when the crisis is even cutting into the employment figures and threatening standards of living even in the US?

The fact that the crisis is even prompting political unrest in the United Kingdpom leads us to consider whether the public purse really can afford the burden of administering the paying out of hundreds of thousands of pounds (perhaps millions, I have never seen a proper estimate of the overall costs) as a result of the Treasure Act in England, Wales and Scotland. Can the state aford to have increasing numbers of people out there ripping these treasures from the security of the archaeological context (in many cases) and then demanding their reward? What is the point of accumulating more and more gold and silver in museums which can barely afford the insurance and costs of the security even now?

To what extent is the current situation sustainable, not only from the point of view of archaeological resource conservation, but also in terms of the sheer costs of the artefact-hoiking free-for-all that exists in the UK at the moment?

Why are US antiquitist doom-and-gloom analysts ignoring the very real costs for the UK of the Portable Antiquities Scheme and Treasure legislation? If in their opinion, other nations are to give up the 'expendable luxury' of protecting their heritage in the way they think fit, why not the British Isles?



FUN: The Great Groucho Sphinx


Sometimes secrecy may be no bad thing.

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Freedom of information (data protection)

I caught a snatch of Any Questions yesterday; someone (I think it might have been Sally Bercow) was saying words to the effect of "transparency is always a good thing" -- presumably in the context of whether Prince Charles's letters to government ministers should be made public.

I am not sure what I think about that partcular teaser. My gut reaction is to think that even people in power ought to be able to write things to each other that aren't automatically made public. If they cant write it down for fear of disclosure, they'll do exactly the same business on the phone or over dinner and then no evidence will be left and no-one will ever know.

But what really struck me was how people get fixated on the "right to know", at the expense of much bigger and more important questions. If we are going to have a king -- then I guess I'm prepared to let him, when heir to the the throne, write to government ministers privately. I'd much rather that people got worked up about whether we should have a king at all, or at least whether the structures of the monarchy as now defined deliver to us what we want. Just knowing what he wrote doesn't make a blind bit of difference to that big issue. You'd never actually be able to pin any decision to his influence anyway.

I've fought for disclosure on all kinds of things, and information that the powers that be think we cant be trusted with. And just after the final Hillsborough revelations, it's probably a bad time to be writing this. But, unfashionable as it is to say, we do appear to have forgotten that sometimes not knowing things can actually be useful. Some things are usefully confidential.

It always strikes me at this time of year, when the uni applications for next year have come in. In days gone by (presumably back in the Dark Ages before the data-protection act), the school references for candidates were confidential, between the head and the university; the kids didnt get access to them. Now they are entirely open to both the applicant and their parents. And they are much less useful in the selection process, for obvious reasons.

I know all the good motves for the change (apart from the long arm of the data protection act). The relationship between pupil and school should be such that nothing that is said should come as a surprise to the applicant. If there are mistakes in the reference, then it is only right that the kid should be able to correct it. Etc etc. In fact, when I got my job aged almost 30, back in my old college, one of the first things I did was rummage through the old files and dig out my head teacher's reference.

Now I dont want to sound as if I don't value the hard work that teachers still put into writing these references, to be as helpful as they possibly can. But the truth is (as many teachers will tell you) that openness does put a curb on frank honesty. And when we are trying to get as rounded a picture of the candidate as we can (partly with all the well known issues of access in mind), the blander records-of-achievement style references that we now often have are much less useful.

Of course, in the old days, there were occasionally teachers who were biased for or against a candidate, or made a bad judgement of them ( I remember one teacher lambasting a girl for her lack of enthusiasm for team sports... it might have been a clever double bluff, but I dont think so). But we never treated these things as gospel truth anyway; they were however very useful as judgements, and we judged the judgements.

And however good the relationship is between school and pupil, there are things that might be usefully conveyed that would be useless and counterproductive for an anxious, or ambitious, or volatile eighteenyear old to read (still less their Mum and Dad). When I finally got to my reference among all the back files, I thought it was spot on, and it pinpointed things about me that would have been a useful guide to how I was likely to perform (or not) at interview. "She is the only child of elderly parents" said a very great deal about the 18 year-old Beard, but it wouldn't have done me any good to read at the time.

The same goes, so far as I'm converned, for medical records. There is nothing I want to see less than what my doctor has just written ("over anxious, borderline obese, drinks too much...?cancer"). What I do want from my doctor is that s/he'll have the time to talk to me, according to the necessarily changing agenda of what I want to know or what s/he thinks I need to know. I mean, what I want is dialogue, not a glimpse of some notes (whether written in the knowledge that I shall be looking at them or not).

My sneaking suspicion is that access to documents is what a bureaucracy gives us when its practitioners havent got the time to talk to us anymore. It can be a poor substitute.

 

 

 

 

 

 

Open Access Journal: Africa: Revue des Études et Recherches préhistoriques, antiques, islamiques et ethnographiques

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Africa: Revue des Études et Recherches préhistoriques, antiques, islamiques et ethnographiques
Tunis : Institut national du patrimoine
Africa est une revue composée de trois séries. La première est consacrée aux études et aux recherches préhistoriques antiques et islamiques (Africa), la seconde aux études et aux recherches relatives au monde phénico-punique et aux antiquités libyques (Reppal), la troisième est consacrée aux études et aux recherches ethnographiques (C.A.T.P.).

Outre les études et la recherche scientifique, Africa publie tous les travaux d’inventaire, de sauvegarde, de mise en valeur et de présentation muséographique du patrimoine.


La revue accueille les contributions originales (articles, rapport de fouilles, notes ou compte rendus) en langue arabe, française, anglaise, italienne, espagnole ou allemande.
[1] 
[2] 
[3&4] 
[5&6]
[7&8]
[9]
[10]
[11&12]
[13] 
[14] 
[15] 
[16] 
[17] 
[18]
[19] 

Open Access Journal: IRS Heritage - IRS – Наследие

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IRS Heritage - IRS – Наследие
Online ISSN : 1992-4836
Print ISSN : 1992-4828 
http://irs-az.com/new/images/stories/cover_herritage_3-2012.jpg
The success of every printed publication depends on how it is received by the readership. From this point of view the Irs-Heritage magazine, which was previously published under the name Irs, was a definite success. It has its own regular readers who value it highly and impatiently wait for the next issue. This question is often heard: To whom does the Irs-Heritage magazine belong? The answer is very simple and clear: It belongs to all - to all who strive to glorify their homeland far beyond its boundaries. Our aim is also simple: to acquaint our readers with the past and present, with the economical and cultural life of Azerbaijan and to transmit this heritage to future generations. In addition, the publishing of this magazine proved to be welcome because our compatriots living outside Azerbaijan have for a long time felt that there is a shortage of publications meeting modern requirements. We would like them to have close connections with their homeland and be able to represent it properly abroad. That is why the meeting between You, Dear Readers, and the magazine is not an accident but a necessity.

It seems that the day is not far away, when the cherished dream of Azerbaijanis about all Azerbaijani diaspora organisations coming together for a common good will be realised. The fact that scientists, leaders of different communities and representatives of the intelligentsia of different faiths are represented on the editorial board again gives hope that this dream will be realised.

We hope that the activities of the Irs-Heritage magazine will become a fertile ground on which this dream will grow and become a reality. Everyone who believes in the future of Azerbaijan and who makes efforts to strengthen its statehood may confidently call Irs-Heritage their magazine, irrespective of if they live in Azerbaijan or abroad. We invite everyone to collaborate and hope that this will be interesting for You.

Archive

№ 1, 2010

№ 1, 2010

№ 2, 2010

№ 2, 2010

№ 3, 2010

№ 3, 2010

№ 4, 2011

№ 4, 2011

№ 5, 2011

№ 5, 2011

№ 6, 2011

№ 6, 2011

№ 7, 2011

№ 7, 2011

№ 8, 2012

№ 8, 2012

Open Access Journal: Syria. Archéologie, Art et histoire

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 [First posted in AWOL 26 August 2009. Updated 21 October 2012]

Syria. Archéologie, Art et histoire
ISSN format papier: 0039-7946

http://farm7.static.flickr.com/6032/6308713238_79268a3239_m.jpg
Syria, qui paraît depuis 1920 sans interruption, est publiée par l’Institut Français du Proche-Orient, en une seule livraison annuelle. La revue se consacre à l’histoire et l’archéologie du Proche-Orient sémitique (y compris Chypre) de la préhistoire à la conquête islamique. Elle publie des articles dans toutes les disciplines de ce champ de recherche, archéologie, épigraphie, philologie, histoire, histoire de l’art ; ces articles peuvent être quelquefois regroupés en dossiers thématiques, mais le plus souvent chaque volume tente de donner, à travers 12 à 18 articles, un panorama varié de la recherche au Proche-Orient ancien. Les langues employées sont le français, l’anglais, l’allemand, l’italien et l’espagnol. Tous les articles sont précédés d’un résumé en français, en anglais et en arabe. La revue publie aussi à l’occasion de courtes notes d’actualité, et consacre dans chaque numéro un épais cahier aux recensions d’ouvrages parus sur le Proche-Orient ancien.

1990-1999

2000-...

Open Access Article- John Dee, King Arthur, and the Conquest of...

Ancient European DNA assessment with 'globe4'

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In a previous experiment, I showed that ADMIXTURE at K=4 tracks the same signal of Amerindian-like admixture detected with f-statistics. I encapsulated that analysis in the globe4 calculator over at the Dodecad Project blog, and decided to use it to assess a few ancient European autosomal samples:


Please note that a very variable number of SNPs was extracted from these various samples. These results should be viewed as indicative of possible patterns that might be confirmed by a more thorough analysis. Also, please consult the globe4 post for more details on the methodology behind it, and the interpretation of the 4 components.

With these various caveats, I would say that these results seem to make some sense and to be fairly consistent with the scenario of Patterson et al. (2012):

  • Oetzi and Gok4, the "farmers" seem to lack the Amerindian component
  • Ajv52, and Ajv70, the northern hunter-gatherers seem to possess it
  • Bra1, the Mesolithic Iberian seems to lack it as well
Bra1 also happens to be the most limited sample in terms of available SNPs. Nonetheless, this would appear broadly consistent with the idea that the "Amerindian"-like admixture in Europeans emanated from north-eastern Europe. Today, all continental Europeans seem to possess some of it, but this can be explained by migration of Ajv-like individuals and their mixtures into Western and Southern Europe from central or northern Europe for which there is ample historical and archaeological evidence (e.g., Italo-Celts, Germans, and Slavs, in addition to other, earlier phenomena).

A broader context

The absence of the Amerindian-like admixture in South Indian Brahmins and Armenians, and its paucity Kurds and Iranians might indicate that this type of ancestry was not represented in ancient Armenians and Indo-Iranians. Indeed, all these populations possess less of this admixture than those of the North Caucasus. Cypriots possess none of it as well, where the Greek_D sample, a small 2.5% portion. In a previous analysis, I estimated a historical-era estimate of North European admixture in Greeks, and this admixture presumably incorporates the signal of Amerindian-like admixture. Additionally, an Iron Age individual from Bulgaria will soon be announced as being Sardinian-like.

The sum of these factors leads me to believe that the signal of Amerindian-like admixture did not play an important role in the formation of the Graeco-Phrygians (and their Armenian relatives) and the Indo-Iranians, or at least did so to an insignificant degree. As the former expanded westward from the PIE homeland, and the latter eastward, they would have had little opportunity to encounter this type of admixture; rather, they would have admixed with Sardinian-like individuals in the west, and Ancestral South Indian (ASI)-like or East Asian individuals in the east.

On the other hand, as Indo-European groups expanded into eastern Europe, setting off a chain of events that would eventually transform most of the northern part of the continent, and, in historical times, much of the rest of it, they would have met with Ajv-like individuals carrying the signal of Amerindian-like admixture, as well as the Oetzi/Sardinian-like farmers that had spread all the way to Scandinavia by the late Neolithic. The population formed by this mixture would have carried with it the signal of Amerindian-like ancestry, and would then transpose it across the continent. The signal would become increasingly muted westward and southward, and indeed this is what we observe.

UPDATE: It is interesting to see that South Indian Brahmins (both the Metspalu et al. sample, and my Iyer_D and Iyengar_D samples) lack this admixture, while Uttar Pradesh Brahmins do not, given the rolloff evidence for a more recent admixture of the latter. This is consistent with a historical admixture event, after the migration of Brahmin groups southwards, as described in that post.

Blogosphere ~ The Roman Family in the Annals of Tacitus: A Consideration of the Family of the Annals and Its Objective Validity


Blogosphere ~ Cambridge Lectures in Classics

Japanese Lake provides new benchmark for Radiocarbon dates

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Plant samples for carbon dating

A new series of calibrated radiocarbon measurements from Japan’s Lake Suigetsu will give scientists a more accurate benchmark for dating materials, especially for older objects, according to a research team that included Oxford University’s Radiocarbon Accelerator Unit.

Teams have been working for over a decade on the small lake extracting cores of beautifully preserved layers of sediment, containing organic material (such as tree leaf and twig fossils), from the bottom of the lake where they had lain undisturbed for tens of thousands of years.

A view of Lake Suigetsu. Photo: Christopher Bronk Ramsey A view of Lake Suigetsu. Photo: Christopher Bronk Ramsey

A more precise method of dating

As an article in the journal Science explains, the findings are hugely significant because they provide a much more precise way to examine radiocarbon ages of organic material for the entire 11,000-53,000 year time range which will facilitate one of the world’s most accurate methods of carbon dating, providing scientists with a clear and precise window into the Earth’s past.

For example, archaeologists should now be able to pinpoint more accurately the timings for the extinction of Neanderthals or the spread of modern humans into Europe.

At the Oxford Radiocarbon Accelerator Unit, Professor Christopher Ramsey with his doctoral student Richard Staff and chemist Dr Fiona Brock worked with two other radiocarbon laboratories (the NERC facility at East Kilbride, Scotland, and Groningen in the Netherlands) on the radiocarbon record from the lake. This research is part of a large international research team, led by Professor Takeshi Nakagawa of Newcastle University, studying the cores for clues about past climate and environmental change.

Varved sediments from Lake Suigetsu. Photo: Gordon Schlolaut Varved sediments from Lake Suigetsu. Photo: Gordon Schlolaut

Leaf fossils for 50,000 years

Radiocarbon is continuously produced in the upper atmosphere. These roughly constant levels of radiocarbon from the atmosphere are then incorporated into all living organisms. Once the organisms die, the radioactive isotope decays at a known rate, so by measuring the radiocarbon levels remaining in samples today scientists can work out how old things are. However, the complication in the calculation is that the initial amounts of radiocarbon in the environment, which are in turn incorporated into growing organisms, vary slightly from year to year and between different parts of the global carbon cycle.

The radiocarbon in the leaf fossils preserved in the sediment of Lake Suigetsu comes directly from the atmosphere and, as such, is not affected by the processes that can slightly change the radiocarbon levels found in marine sediments or cave formations. Before the publication of this new research, the longest and most important radiocarbon dating records came from such marine sediments or cave formations, but these needed to be corrected. At last, the cores from Lake Suigetsu provide a more complete, direct record of radiocarbon from the atmosphere without the need for further correction.

The cores are unique: they display layers in the sediment for each year, giving scientists the means of counting back the years. These counts are compared with over 800 radiocarbon dates from the preserved fossil leaves. The only other direct record of atmospheric carbon comes from tree rings, but this only goes back to 12,593 years ago. The Lake Suigetsu record extends much further to 52,800 years ago, increasing the direct radiocarbon record by more than 40,000 years.

The new method enables scientists to determine the age of events around the globe within a range of about 340 years.

“In most cases the radiocarbon levels deduced from marine and other records have not been too far wrong. However, having a truly terrestrial record gives us better resolution and confidence in radiocarbon dating,” said Professor Ramsey.

It also allows us to look at the differences between the atmosphere and oceans, and study the implications for our understanding of the marine environment as part of the global carbon cycle.”

Workers coring on Lake Suigetsu. Photo: Takeshi Nakagawa Workers coring on Lake Suigetsu. Photo: Takeshi Nakagawa

Small shifts in chronology

To construct a radiocarbon record from Lake Suigetsu, Professor Ramsey and his colleagues measured radiocarbon from terrestrial plant fragments spaced throughout the core. The research team also counted the light and dark layers throughout the glacial period to place the radiocarbon measurements in time. Many of the layers were too fine to be distinguished by the naked eye, so the researchers used a microscope, as well as a method called X-ray fluorescence that identifies chemical changes along the core.

A record of year-to-year changes in radiocarbon levels in the atmosphere, such as those found in a sediment core, must be ‘anchored’ in time by assigning some part of it an absolute age. The researchers did this by matching the first 12,200 years of their record with the tree-ring data, a well-established record that begins in the present. Ramsey and colleagues also lined up segments of their data with those of other records from the same time periods and found that they generally aligned.

This record will not result in major revisions of dates. But, for example in prehistoric archaeology, there will be small shifts in chronology in the order of hundreds of years,” said Professor Ramsey.

Such changes can be very significant when you are trying to examine human responses to climate that are often dated by other methods, such as through layer counting from the Greenland ice cores.  For the first time we have a more accurate calibrated time-scale, which will allow us to answer questions in archaeology that we have not had the resolution to address before.”

Generally, researchers use a composite record called IntCal to determine the ages of objects, based on their radiocarbon measurements. The IntCal record uses data from multiple sources, including marine records, stalagmites and stalactites, and tree rings. It is expected that the Suigetsu data will be incorporated into the latest iteration of IntCal, which is due to be released within the next few months.

Source: University of Oxford

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