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Stone Tools Found On Crete Push Back Humans' Maritime History

The New York Times reports that stone tools discovered on the Greek island of Crete, and reported last month at an academic conference, are strong evidence for rethinking the maritime capabilities of early humans. The researchers who found the tools (hand-axes, cleavers, and scrapers) estimate them to be at least 130,000 years old; if they're right, humans have been traveling long distances at sea (Crete is 200 miles from the northern African coastline) for at least several tens of thousands of years longer than earlier believed.

9 of 176 comments (clear)

  1. Obligatory ... by Webster9 · · Score: 5, Funny

    132,010 BC @ 00:12 Webster9 wrote: First Post

  2. First Post by Anonymous Coward · · Score: 5, Funny

    In a related story, next to one of the axes they found a mast with the words "First Post".
    But the amazing part was the -1 Offtopic heading right beside the inscription.

  3. Re:They're just rocks. by Daniel+Dvorkin · · Score: 5, Insightful

    I knew someone was going to say that.

    Many primitive stone tools look like plain rocks at first glance, but there are distinctive chip and wear patterns on tools that just don't occur by chance. An expert will be able to tell you very quickly if you're dealing with an actual tool or just a rock that's assumed a suggestive shape.

    --
    The correlation between ignorance of statistics and using "correlation is not causation" as an argument is close to 1.
  4. Re:They're just rocks. by Anonymous Coward · · Score: 5, Funny

    An expert will be able to tell you very quickly if you're dealing with an actual tool

    Seriously. You're just asking for a smartass remark.

  5. Re:Not Necasrily? by wizardforce · · Score: 5, Insightful

    FTA:

    Crete has been an island for more than five million years, meaning that the toolmakers must have arrived by boat.

    Stone tools found on an island indicates that humans were capable of rudimentary sea travel in order to get to Crete from the mainland. Also FTA:

    More than 2,000 stone artifacts, including the hand axes, were collected on the southwestern shore of Crete, near the town of Plakias

    That is an awful lot of stone tools to have just "washed up on to the beach" wouldn't you think so?
    TFA states that the team was originally looking for much younger tools on the order of ~11,000 years old when they found these instead. Also FTA:

    The cliffs and caves above the shore, the researchers said, have been uplifted by tectonic forces where the African plate goes under and pushes up the European plate. The exposed uplifted layers represent the sequence of geologic periods that have been well studied and dated, in some cases correlated to established dates of glacial and interglacial periods of the most recent ice age. In addition, the team analyzed the layer bearing the tools and determined that the soil had been on the surface 130,000 to 190,000 years ago.

    Dr. Runnels said he considered this a minimum age for the tools themselves. They include not only quartz hand axes, but also cleavers and scrapers, all of which are in the Acheulean style.

    In other words, the dating of the soil associated with the tools indicates that they are at least 130,000 years old and are of a tool style used by humans/ancestors that is very ancient. The tools were not neccessarily made by early humans as at the time these tools were likely created, humans were not the only hominids. The upper limit for the date of these tools is ~700,000 years which would pre-date modern humans although it seems unlikely that they are that old.

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    Sigs are too short to say anything truly profound so read the above post instead.
  6. Re:They're just rocks. by Arker · · Score: 5, Informative

    Sure, if you can smuggle the mathematical concept of infinity in you can always get absurd results. :)

    But in reality these are indeed as you say 'the real deal' - stones dont knapp themselves. If you ever get a chance to see how things things were made up close you will understand why. It's quite a fascinating - and painstaking - craft.

    I'm still thinking the article is melodramatic fluff though. It's not at all surprising to see these things on Crete with such a date. We know archaic homonids made them, we know they spread out all along the coastlines 'beachcombing' just as our own ancestors did a little later. And island-hopping to Crete during a glacial maximum should have been well within their capabilities - other large mammals were doing it too, the hippos I already mentioned, elephants, even deer made that crossing at various points.

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  7. Re:Not so far from Greece by whatajoke · · Score: 5, Insightful

    an undiscovered Greek sea-faring civilization engaging in island-hopping trade among islands within sight of each other than a mysterious African tribe that suddenly invented the boat to colonize the island
    Still not comfortable with our African ancestry I see.

  8. Re:Interesting Article But... by JackieBrown · · Score: 5, Insightful

    McDonald's signs are how Man in four thousand years will discover that the whole world was once globally connected.

    There will be debates as the signs are uncovered about whether they could have been formed naturally, but - in the end - it will demonstrate the global society we have today.

  9. Re:Humans are pretty damn clever... by CrimsonAvenger · · Score: 5, Insightful

    Aiming for an island, even a big island, if you're off by a couple degrees you could miss by a hundred miles.

    In order to miss by a hundred miles with a couple of degree course error, your trip has to be about 3000 miles long, rather than 200. To miss Crete from North Africa would require a sustained course error of about 30 degrees.

    In addition, let's not forget the basic navigational techniques of the Polynesians (another Stone Age people who sailed great distances routinely).

    The flights of birds can give you clues to the location of land from dozens to hundreds of miles away - some birds fly over water but sleep only on land - if they're flying in a particular direction late in the day, that's a pretty solid hint of land in that direction.

    Wave patterns can also show you hints as to the directions of land too far away to see, but plenty close enough to reach.

    Plus there's those mountains. Crete's highest peak is visible from about 100 nm. Makes it a lot easier to find when you can see it after you've completed half your voyage.

    And finally, consider that there is a chain of islands from Turkey to Crete (as well as an alternate chain from Greece - and Crete's mountain peaks are barely visible from Greece) - if that chain were followed (as by successive waves of migration), the path would be from one island to the next visible island repeated till you hit Crete.

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    "I do not agree with what you say, but I will defend to the death your right to say it"