Relative dating is used to determine the privet thedatingelement com bu 1

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We count the types of musical recording methods found in each of our junkyard samples, and then work out the percentages.Of all the music recording artifacts in our sample from Junkyard E, 10% are related to 45 rpm technology; 20% to 8-tracks; 60% are related to cassette tapes and 10% are CD-Rom parts.The same is true for 45s, and 8-tracks, and cassette tapes, and LPs, and CDs, and DVDs, and mp3 players (and really, any kind of artifact).For this seriation demonstration, we're going to assume that we know of six junkyards (Junkyards A-F), scattered in the rural areas around our community, all dated to the 20th century.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.Archaeologically, you would expect no 78s to be found in a junkyard that was closed before 78s were invented.There might be a small number of them (or fragments of them) in the junkyard which stopped taking junk during the first years 78s were invented.

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relative dating is used to determine the-39

You might find a small number of 78s for a long period after they were pretty much done.His worrying about where a pot came from and what period it dated to and what that meant to the other objects buried with it were light-years away from the ideas represented in this photo dated to 1800, in which "Egyptian pots" was considered enough information for the thinking man.Petrie was a scientific archaeologist, probably close to our first example.Larger percentages of artifact types are illustrated with longer bar snippets and smaller percentages with shorter bar snippets.A good source of information about how to make charts in Excel is Ted French's Excel Chart Tutorial (for several different versions of Excel).

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