Relive Important Archive Articles

A large number of important articles get buried over time as new articles are added to our website, so here’s a chance to review and relive some of our most important articles. We think you might enjoy reviewing these timeless features.

Front Porch: Water etches interesting stories on landscape

I have always loved the ocean. I spent my growing-up years in, on or at least somewhere near the Atlantic Ocean and its various bays. The feel of ocean water, its movement, how it smells and all the amazing life that it supports – wonderful. And whenever I looked over the ocean’s horizon, it wasn’t scary, but rather full of potential for what was just beyond what I could see. When I moved to Spokane – clearly, no ocean, but lots and lots of freshwater lakes and rivers. I have spent I can’t tell you how many of my adulthood hours, swimming in Lake Coeur d’Alene, Lake Pend Oreille, Priest Lake, etc. And sailing. And walking along riverbanks. And tossing sticks into whatever body of water, fast moving or still, that was before me, for our dog to fetch. Water is wonderful. As a young bride, newly relocated to Eastern Washington, lo those many years ago, I took my first drive to Seattle with my husband. Heading up the Sunset Hill, passing Four Lakes, then Fishtrap, then … yikes. Where did the water go? There was a long stretch – broken up briefly by Sprague Lake and Moses Lake – of what was the thirstiest landscape I’d encountered. It wasn’t until we crossed the Columbia River and drove up and past the Vantage Grade did I begin to see deciduous trees and bigger leafy plants that suggested the rainfall amounts required to support them. It got lush and humid and wet as we drove west. We were heading to … water! I just endured that unappealing stretch of land between Fishtrap and the Columbia over a number of years driving back and forth to Seattle. Not only was it dry, it was essentially treeless. One friend of like mind said it was best just to drive through there at night because the view would be just as interesting. So much for being young and stupid. It was still kind of dry for my taste, but I began to appreciate how the sunlight hit the terrain at different times of year and in different weather conditions. It still wasn’t water, of course, but it kind of grew on me. It’s hard to live in this neck of the woods and not learn about the wonderful Columbia Basin Project that brought irrigation to east-central Washington (ah, water!), which produces amazing amounts of agricultural products for export and to feed us all. But what really sold me on that, to me, foreign scenery was back when I worked at Eastern Washington University and I met the terrific Bob Quinn, professor of geography, who loved the environs of the state’s east side with a zeal and passion I couldn’t possibly imagine. He gave me some information, and I began to read about this landscape I’d so easily dismissed – land that was scoured by massive floods some 18,000 to 13,000 years ago (the last Ice Age), floods from glacial Lake Missoula that carved out the canyons and created braided waterways now known as the Channeled Scablands of Eastern Washington. The floods were cataclysmic, with estimates indicating that 500 cubic miles of water that was 2,000 feet deep, burst forth at 386 million cubic feet per second – all headed this way, and beyond, in one darn big rushing, gushing explosion. And then it built up and did it over and over again. That’s a lot of water. I began looking at the landscape differently as I drove through, marveling at the magnificence of that creation, and saw that it has its own beauty – not to mention a heck of a back story. How ignorant of me to just have ignored all that geologic magnificence because it didn’t fit into my preferred norm. I thought about that again on our most recent drive to Seattle to visit our son. Clearly, I am no longer a young adult full of not-burdened-by-knowledge opinion and attitude, but an older person with a fair number of miles on her and, I hope, a greater realization that everything deserves a second look – and also, that a little research is also a good thing. Because I read a book and some supporting literature, I discovered things that gave me a different set of eyes with which to see a particular section of the world around me. I’m trying still, even in my old age, to keep doing that. Never too old to read a book and learn something. Or to change a mind. The Spokesman Voices correspondent Stefanie Pettit can be reached by email at upwindsailor@comcast.net

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Bretz and His Floods Story – National Geographic

National Geographic has published an outstanding article, “Formed by Megafloods, This Place Fooled Scientists for Decades”, about J Harlan Bretz and his outrageous, fantastical theories of a landscape shaped by huge floods. Most Ice Age Floods aficionados are generally aware of the story, but this one is so detailed and well written it’s worth reading for the story-telling value alone. Please see: This National Geographic site:

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Earth Appears to Have a 27.5-Million-Year ‘Heartbeat’

Geologists have been investigating a potential cycle in geological events for a long time. A recent analysis on the ages of 89 well-understood geological events from the past 260 million years show a catastrophic 27.5 million year pulse in eight clusters of world-changing geologic events over geologically small timespans. This pulse of clustered geological events – including volcanic activity, mass extinctions, plate reorganizations, and sea level rises – is incredibly slow, a 27.5-million-year cycle of catastrophic ebbs and flows. As you can see from the graph, some of those times were tough – with over eight of such world-changing events clustering together over geologically small timespans, forming the catastrophic ‘pulse’. “These events include times of marine and non-marine extinctions, major ocean-anoxic events, continental flood-basalt eruptions, sea-level fluctuations, global pulses of intraplate magmatism, and times of changes in seafloor-spreading rates and plate reorganizations,” the team writes in their paper. These cyclic pulses of tectonics and climate change may be the result of geophysical processes related to the dynamics of plate tectonics and mantle plumes, or might alternatively be paced by astronomical cycles associated with the Earth’s motions in the Solar System and the Galaxy. Luckily for us, the research suggests we have another 20 million years before the next ‘pulse’. 

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Humans in the Beringia Yukon ~24,000 Years Ago

Archaeologists have long debated how and when people entered the Americas. Throughout the 20th century, the mainstream hypothesis was that the Clovis people were the first to pass into Alaska about 13,000 years ago.  Stemming from his excavations between 1977 and 1987 at the Bluefish Caves in northwestern Yukon, Jacques Cinq-Mars, a Canadian archaeologist, unearthed evidence that hunters were using the site some 24,000 years ago. Lauriane Bourgeon, a French archaeologist, has spent much of her career re-examining and dating the Bluefish Caves collection to clarify the history of the contentious site. Her research has shown that at least 15 bones from the Bluefish Caves were cut-marked by people as early as 23,500 years ago.

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Beryllium-10 dating of late Pleistocene megafloods and Cordilleran Ice Sheet retreat

Balbas et. al. use cosmogenic beryllium-10 dating methods to further constrain the timing of ice sheet retreat, as well as the potential pathways for megafloods from both Lake Missoula and Lake Columbia. Read this fascinating Geology article summarizing their findings. Balbas2017 – Missoula Flood Chronology In summary, our new chronological information suggests the following: (1) Blockage of the Clark Fork river by the Purcell Trench lobe by ca. 18.2 ka, resulting in Missoula floods following the Columbia River valley. (2) Blockage of the Columbia River valley by the Okanogan lobe before 15.4 ± 1.4 ka, which shunted Missoula flood water south across the Channeled Scablands. (3) The final Missoula floods at ca. 14.7 ± 1.2 ka, signaling retreat of the Purcell Trench lobe from the Clark Fork valley, yet these floods entered a glacial Lake Columbia still impounded by the Okanogan lobe. (4) Down-Columbia floods at ca. 14 ka from breakouts of glacial Lake Columbia, signaling the retreat and final damming of the Columbia Valley by the Okanogan lobe

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OSU Archaeologists Find Oldest Known Projectile Points in the Americas

Oregon State University archaeologists have uncovered projectile points in Idaho that are thousands of years older than any previously found in the Americas, helping to fill in the history of how early humans crafted and used stone weapons. The 13 full and fragmentary projectile points, razor sharp and ranging from about half an inch to 2 inches long, are from roughly 15,700 years ago, according to carbon-14 dating. That’s about 3,000 years older than the Clovis fluted points found throughout North America, and 2,300 years older than the points previously found at the same Cooper’s Ferry site along the Salmon River in present-day Idaho. “From a scientific point of view, these discoveries add very important details about what the archaeologic al record of the earliest peoples of the Americas looks like,” said Loren Davis, an anthropology professor at OSU and head of the group that found the points. “It’s one thing to say, ‘We think that people were here in the Americas 16,000 years ago;’ it’s another thing to measure it by finding well-made artifacts they left behind.” Previously, Davis and other researchers working the Cooper’s Ferry site had found simple flakes and pieces of bone that indicated human presence about 16,000 years ago. But the discovery of projectile points reveals new insights into the way the first Americans expressed complex thoughts through technology at that time, Davis said. The Salmon River site where the points were found is on traditional Nez Perce land, known to the tribe as the ancient village of Nipéhe. The land is currently held in public ownership by the federal Bureau of Land Management. The points are revelatory not just in their age, but in their similarity to projectile points found in Hokkaido, Japan, dating to 16,000-20,000 years ago, Davis said. Their presence in Idaho adds more detail to the hypothesis that there are early genetic and cultural connections between the ice age peoples of Northeast Asia and North America. “The earliest peoples of North America possessed cultural knowledge that they used to survive and thrive over time. Some of this knowledge can be seen in the way people made stone tools, such as the projectile points found at the Cooper’s Ferry site,” Davis said. “By comparing these points with other sites of the same age and older, we can infer the spatial extents of social networks where this technological knowledge was shared between peoples.” These slender projectile points are characterized by two distinct ends, one sharpened and one stemmed, as well as a symmetrical beveled shape if looked at head-on. They were likely attached to darts, rather than arrows or spears, and despite the small size, they were deadly weapons, Davis said. “There’s an assumption that early projectile points had to be big to kill large game; however, smaller projectile points mounted on darts will penetrate deeply and cause tremendous internal damage,” he said. “You can hunt any animal we know about with weapons like these.” These discoveries add to the emerging picture of early human life in the Pacific Northwest, Davis said. “Finding a site where people made pits and stored complete and broken projectile points nearly 16,000 years ago gives us valuable details about the lives of our region’s earliest inhabitants.” The newly discovered pits are part of the larger Cooper’s Ferry record, where Davis and colleagues have previously reported a 14,200-year-old fire pit and a food-processing area containing the remains of an extinct horse. All told, they found and mapped more than 65,000 items, recording their locations to the millimeter for precise documentation. The projectile points were uncovered over multiple summers between 2012 and 2017, with work supported by a funding partnership held between OSU and the BLM. All excavation work has been completed and the site is now covered. The BLM installed interpretive panels and a kiosk at the site to describe the work. Davis has been studying the Cooper’s Ferry site since the 1990s when he was an archaeologist with the BLM. Now, he partners with the BLM to bring undergraduate and graduate students from OSU to work the site in the summer. The team also works closely with the Nez Perce tribe to provide field opportunities for tribal youth and to communicate all findings. The findings were published in the journal Science Advances. Reprinted from Oregon State University Newsroom, STORY BY: Molly Rosbach, SOURCE: Loren Davis

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The Grand Coulee – A Floods Poem

THE GRAND COULEE – A Floods Poem THE GRAND COULEE Older than legends,Younger than mountains,The earth remembersThe Great Inland Sea. And that Sea emptiedIn torrential furyNever imaginedEven in dreams. Down through the canyons,Flood of all riversCarving the couleesTime, time again. Roiled surging waters,Thunder of thunders,Swift toward the oceanReshaping the plain. Gone with the glaciersIs the great Lake Missoula,Gone from remembrance,Like mist in the wind. Yet the story is etchedIn the canyons and couleesLeft for those who imagineTo seek and to find. David Wahl January 4, 2002 Lower Grand Coulee Upper Grand Coulee at Steamboat Rock (left)

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