|
Earth Explorer
|
Volume 53 Number 4, July/August 2000
|
by Tom Gidwitz
|
|
Volcanologist Sigurdsson makes his daily two-mile commute across Narragansett Bay from Jamestown to the University of Rhode Island's School of Oceanography in Kingston. (Courtesy Haraldur Sigurdsson) [LARGER IMAGE] |
The 60-year-old volcanologist Haraldur Sigurdsson has spent his life picking
through the stones spewed by volcanoes, discovering facts about the earth's
workings, and revealing clues to human history hidden in ash. His findings
have changed our ideas about Minoan Crete, Herculaneum, and Pompeii, and his
research into the climatic impact of eruptions has helped archaeologists
gain insight into the distant past. "He studies volcanoes with a really
broad brush, and that's useful for us," says archaeologist Payson Sheets of
the University of Colorado at Boulder. Sheets is excavating an ash-buried
settlement in El Salvador and has been researching volcanic impacts on
Mesoamerican societies for more than two decades. "So much of his work has a
human dimension to it, what happens to people and how volcanoes affect human
society."
In his new book, Melting the Earth: The History of Ideas on Volcanic
Eruptions, Sigurdsson describes how our bias for the new blinds researchers
to the discoveries of the past. "Generally people are only really interested
in the most recent works. They only cite the most recent references on a
given topic, so the guy who made the original breakthrough is often
forgotten."
Archaeologists, too, sometimes have their own blinders, says Sigurdsson,
noting that "[Classical] archaeologists have, until recently, been
professionally trained as art historians. They are archaeologists, but their
main motivation is to contribute to an understanding of art history." In the
case of Pompeii and Herculaneum, the eruption that covered the site was
"kind of secondary, and certainly the material that enclosed the site was
just in the way." This focus on the cultural import of the artifact, the
message inherent in its form rather than the tale of the process that
entombed it, meant that archaeologists often did not recognize or care to
recognize external forces that changed the society. "That's the fundamental
division or schism between archaeology and volcanology, the approach to the
study of sites of this type," says Sigurdsson. "That's changing, of course."
Tom Gidwitz is a freelance writer specializing in the earth sciences. His book Story in the Stone will be published this fall by Steck-Vaughn Publishing Company.
© 2000 by the Archaeological Institute of America archive.archaeology.org/0007/abstracts/earth.html |