02-01-2014 Jeff Tepper: Geomythology

About the Talk

Geomythology: The Quest for Scientific Explanations of The Great Flood and Other Mythical Catastrophes

Myths from many cultures around the world contain descriptions of phenomena or events that bear a striking resemblance to natural disasters including floods, earthquakes, volcanic eruptions, tsunamis, and meteorite impacts. Geomythology is an emerging discipline that combines geology, archaeology, mythology, and history to investigate the possibility that some of these mythical “stories” may in fact be garbled accounts of actual events that occurred in the distant past. There is strong evidence that some myths originated over 7,000 (and possibly up to 40,000) years ago. Thus a major challenge in geomythology is to see through the changes these stories underwent as they were passed down orally over hundreds of generations. In this talk we will examine the origins of the Great Flood story, analyzing the Biblical and Mesopotamian versions as well as possible linkages to catastrophic flooding of the Black Sea. We will also discuss Plato’s account of the sinking of Atlantis and several stories that appear to have originated with earthquakes and tsunamis. Included among the latter are legends from the Pacific Northwest that feature battles between the Thunderbird and the Whale, a motif now recognized as a tsunami metaphor.

About the Speaker

Jeff Tepper is a Professor and Chair of the Geology Department at the University of Puget Sound. He received his AB from Dartmouth College and his MS and Ph.D. from the University of Washington, where he studied the origins of granites in the North Cascades. After teaching on the east coast for ten years, he joined the faculty at Puget Sound in 2001. Dr. Tepper’s research uses geochemistry to investigate geologic questions. He and his students are currently studying the Eocene magmatic and tectonic history of the Pacific Northwest, the environmental history of the Puget Sound area as recorded in lake sediments, and the behavior of heavy metals in sediment.

12-07-2013 Wendell Duffield: Kilauea Volcano

About the Talk

Chasing Lava – A Geologist’s Adventures at Kilauea Volcano, Hawai’i

In 1969, as Neil Armstrong set foot on the moon, a young geologist known as Duff (aka Wendell Duffield) was preparing to set foot on a rocky landscape of another sort:  Kilauea Volcano, a growing shield volcano, on the island of Hawaii, where he would spend three years at the U.S. Geological Survey’s Hawaiian Volcano Observatory. Duff’s time at HVO encompassed everything from the scientific to the humorous to life-threatening.

While he was at HVO, Kilauea erupted at three areas. Several times, 2,000-ft-tall lava fountains spewed from the east rift zone, at a site later named Mauna Ulu (Hawaiian: growing mountain). Elsewhere, so-called “curtains of fire” danced from long cracks on the floor of Kilauea’s summit caldera. And for only the fourth time in Hawaii’s historic record, lava emerged from a fissure along the southwest rift zone.

An unexpected “extra” for Duff was large, sluggishly circulating lake of thinly-crusted-over molten lava that played out a miniature version of global plate tectonics — then a revolutionary and newly developing model of how Earth’s crust moves about. Duff’s movies and photos of the small-scale version of ‘plate’ motions quickly became a popular teaching aid in classrooms worldwide.

Meanwhile, during the brief moments between Duff’s observing and recording antics of the active volcano, his dog Cinda discovered a reticulated python hiding in the rainforest — in a state that proudly advertised a total lack of snakes other than at the Oahu zoo. This discovery was very unwelcome news for Hawaiian political officials.

About the Speaker

Duffield’s first encounter with an active volcano was at Kilauea on the Big Island in 1968. From 1969 to 1972 he was a staff geologist there at the USGS Hawaiian Volcano Observatory. Kilauea erupted nearly non-stop during those three years. His book “Chasing Lava” tells the tale of those exciting times.

In 1997, Duff retired from the USGS and immediately settled into being an Adjunct Professor for the Geology Department of Northern Arizona University, Flagstaff, where he gave the occasional classroom lecture, mentored students, continued researching topics volcanic and began writing essays and books on a variety of topics. Although he moved from Flagstaff to Whidbey Island in May of this year, he retains his NAU title but now spends most of his time writing.

05-04-2013 Rowland Tabor: Olympic Mountains

About the Talk

Rocks and Rain in the Olympic Backcountry

Ever hiked deep into the Olympic Mountains and wondered why they are so high, so steep and where they came from? Well, Dr. Rowland Tabor of the U.S. Geological Survey is ready to answer these and many more questions about the Olympic Mountains when he presents “Mapping a Tectonic-Plate Boundary: Rocks and Rain in the Olympic Backcountry” as part of the  Jefferson Land Trust Geology Lecture Series.

Along the west coast of North America, from Mexico to southern Canada, are mountain ranges of diverse character collectively called the Coast Ranges. The Olympic Mountains, at the extreme northwest corner of the conterminous United States, are a unique part of these ranges. Even though they are closely related to rock composition to the Coast Ranges of Oregon, they are separated from them by the broad lowland of the Chehalis River and are considerably higher and more rugged. They have some scenery in common with the Insular Ranges of Vancouver Island in Canada but are geologically quite different. To learn more about the geology of the region, or to take a virtual field trip.

About the Speaker

Dr. Tabor, a leading scientist in the Northwest and author of the sentinel publication Geology of Olympic National Park, will present his personal experiences from years of mapping in the Olympic Mountains, a detailed outline of their geology, the development of geologic ideas about their formation, and briefly mention of some new work by others.