How Old Tree Rings And Ancient Wood Are Helping Rewrite History

ScienceDaily (Oct. 27, 2007) — Cornell archaeologists are rewriting history with the help of tree rings from 900-year-old trees, wood found on ancient buildings and through analysis of the isotopes (especially radiocarbon dating) and chemistry they can find in that wood.

Sturt Manning talks to visitors during a demonstration of the tree-ring laboratory following his presentation during Trustee/Council Weekend. At the lecture, Manning explained how students and lab staff members precisely dated a wooden support beam from McGraw Hall to 1870. (Credit: Jason Koski/Cornell University Photography)"

By collecting thousands of years worth of overlapping tree rings, with each ring representing a tree's annual growth, the researchers have created long-term records in the eastern Mediterranean that allow them to precisely date such seminal milestones in history as when Hammurabi, "the law-giver," reigned, when the massive Santorini volcanic eruption occurred, and the timelines of the Bronze and Iron ages, as well as many more recent events.

Sturt Manning, director of the Malcolm and Carolyn Wiener Laboratory for Aegean and Near Eastern Dendrochronology at Cornell, summarized his work for Cornell council members and trustees, Oct. 19 in Statler Hall. Dendrochronology is the science of comparing growth patterns in tree trunks to date past events or climate changes. Cornell's dendrochronology laboratory now holds more than 40,000 tree-ring samples, including many from the eastern Mediterranean.

Trees of the same species from the same geographical area have fairly similar ring patterns, Manning said, because they are exposed to similar climatic conditions. By starting with living trees and then finding samples from slightly older trees used in buildings and still older trees from more ancient sites, archaeologists have been able to overlap tree-ring data to create chronologies that date back thousands of years.

Radiocarbon dating, statistical analysis, researchers' trained eyes and prior knowledge of events in the area are then used to match new samples with tree-ring chronologies from the same area. Manning and his staff in the lab have used such techniques to verify, for example, the likely origins of a Circle of Rembrandt painting (referring to an elite group of students that worked directly with the artist). He showed that the oak board of the painting came from the same tree as the board of another painting, whose origins are known and which hangs in a museum in Krakow, Poland.

Similarly, scholars have debated for more than 150 years about the dates of the ancient civilizations of the Babylonians, the Assyrians and the lifetime of Hammurabi, the Babylonian king who helped create the oldest set of written laws. Mainstream scholars have proposed dates for his reign that differ by 300 years.

"You can't do history if you have a difference of 300 years or so," said Manning. "That would place George Washington as a contemporary of some person living right now. ... You'd get entirely the wrong historical reconstruction if you didn't have the dates sorted out."

Using ancient beams from palaces of known contemporaries of Hammurabi, Cornell researchers combined radiocarbon dating techniques with dendrochronological evidence to date Hammurabi to around 1792 B.C., Manning said.

Similar techniques used on wood buried beneath volcanic ash allowed Manning and others to date the Santorini volcanic eruption, one of the largest in the last 10,000 years, as most likely occurring in the late 17th century B.C., 100 years earlier than previously believed. The discovery may rewrite the late Bronze Age history of Mediterranean civilizations, he said.

“Similar techniques used on wood buried beneath volcanic ash allowed Manning and others to date the Santorini volcanic eruption, one of the largest in the last 10,000 years, as most likely occurring in the late 17th century B.C., 100 years earlier than previously believed. “

Given that Santorini has been linked to the miracles in Exodus, wonder how this new time line fits in with Biblical scholars?

Bible date for Exodus around 1461 BC; Santorini, around 1628 BC.

King Hammurabi is the best known of the early monarchs of ancient times... belonged to the First BabyIonian Dynasty which came to an end, under circumstances shrouded in mystery, some three or four generations after Hammurabi. For the next several centuries, the land was in the domain of a people known as the Kassites. They left few examples of art and hardly any literary works -- theirs was an age comparable to and contemporaneous with that of the Hyksos in Egypt, and various surmises were made as to the identity of the two peoples. A cartouche of the Hyksos king Khyan was even found in Babylonia and another in Anatolia, a possible indication of the extent of the power and influence wielded by the Hyksos. Until a few decades ago, the reign of Hammurabi was dated to around the year 2100 before the present era... At Platanos on Crete, a seal of the Hammurabi type was discovered in a tomb together with Middle Minoan pottery of a kind associated at other sites with objects of the Twelfth Egyptian Dynasty, more exactly, of its earlier part. This is regarded as proof that these two dynasties were contemporaneous... however... At Mari on the central Euphrates, among other rich material, a cuneiform tablet was found which established that Hammurabi of Babylonia and King Shamshi-Adad I of Assyria were contemporaries. An oath was sworn by the life of these two kings in the tenth year of Hammurabi, The finds at Mari "proved conclusively that Hammurabi came to the throne in Babylonia after the accession of Shamshi-Adad I in Assyria"... The Khorsabad list ends in the tenth year of Assur-Nerari V, which is computed to have been -745... the first year of Shamshi-Adad is calculated to have been -1726 and his last year -1694... it reduced the time of Hammurabi from the twenty-first century to the beginning of the seventeenth century... "a puzzling chronological discrepancy", which could only be resolved by making Hammurabi later than Amenemhet I of the Twelfth Dynasty... If Hammurabi reigned at the time allotted to him by the finds at Mari and Khorsabad -- but according to the finds at Platanos was a contemporary of the Egyptian kings of the early Twelfth Dynasty -- then that dynasty must have started at a time when, according to the accepted chronology, it had already come to its end. In conventionally-written history, by -1680 not only the Twelfth Dynasty, but also the Thirteenth, or the last of the Middle Kingdom, had expired.

[Immanuel Velikovsky, Hammurabi and the Revised Chronology]

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