Tropical Fossils in Alaska | Geophysical Institute
Jan 29, 2026 · Paleobotanist Jack A. Wolfe of the United States Geological Survey at Menlo Park, California, has found a number of tropical rain forest fossils along the eastern Gulf of Alaska. These …
Northern Tree Habitats | Geophysical Institute
Jan 29, 2026 · Why take a chance with exotics, when native trees have proven their ability to survive? Several reasons prompt testing of foreign tree species. Human activities often create and maintain …
More on Why Tree Trunks Spiral | Geophysical Institute
Jan 29, 2026 · Granted, not all trees exhibit the same twist, but the majority of them do. The phenomenon can be likened to the claim that water will always spiral out of a drain in a counter …
Trees as Earthquake Fault Indicators | Geophysical Institute
Jan 29, 2026 · A swath of dead, tilted and broken trees now makes obvious the trace of the Fairweather fault that broke in July 1958 to devastate Lituya Bay and nearby parts of southeastern Alaska. …
Visit to an exotic tree plantation in Alaska | Geophysical Institute
Jun 18, 2021 · These exotic trees — some now 70 feet tall — are a nice legacy for the men who planted shin-high seedlings years before Woodward last visited the plot in 1981. Les Viereck, a renowned …
Old Trees, New Problems - Geophysical Institute
Jan 29, 2026 · The trees themselves play surprising roles at some distance from the forest: in southeastern Alaska, for example, terpenes---natural hydrocarbons exuded by conifers--are an …
Trees for a Cold Climate | Geophysical Institute
Apr 1, 1993 · The hardiest trees rely on physics more than on chemistry to make it through the winter. When the seasonal chill begins to reach black or white spruce, for example, the sap leaves their …
Orange trees in the Alaska Range | Geophysical Institute
Sep 3, 2020 · While wandering middle Alaska this summer, I noticed orange spruce trees along the entire length of the Denali Highway, from Paxson to Cantwell.
Mummified forest tells tale of a changing north | Geophysical Institute
Jan 6, 2011 · Pollen samples from lake-bottom muck also show that basswoods, hickories, elms and other trees grew in Alaska and other northern places millions of years ago. Those fair-weather trees …
The Kodiak Treeline | Geophysical Institute
Jan 29, 2026 · Spruce trees planted on the islands by the Russians in 1805 are doing just fine and reseeding themselves naturally, although the total tree population hardly amounts to a forest.