![]() ![]() Green = Old-Growth Forests 120+ years of ageįorest inventories were created using a variety of source data including USFS data. Willamette National Forest interactive map (good accuracy)īlue = Mature forests 80-120 years of age Siuslaw National Forest interactive Map(moderate- accuracy) Mount Hood National Forest Interactive Map(moderate+ accuracy) Oregon Wild believes these maps to be the most accurate depiction of mature and old-growth trees for these areas, but its important to note that the data is not perfect. ![]() This generalized range provides an idea of where mature and old-growth forests exist in Oregon. For the purpose of mapping the general location of these forests, mature forests are defined 80-120 years of age, and old-growth as 120 years and older. There is no exact definition for what constitutes a mature or old-growth forest. Oregon Wild has inventoried the mature and old-growth forests in some of Oregon's oldest, most intact landscapes. Holocene Volcanoes (KMZ File 534bytes Aug14 14)ĭata source: Smithsonian Institution Global Volcanism.Old-growth forests are one of our state's treasures, providing homes for an incredible array of plant and animal species, some endangered and some not, and giving humans a place to fish, hike, hunt, camp and enjoy nature.Īlthough logging has destroyed most of these forests, we're fortunate that some of our old-growth and mature forests are still relatively intact, and its important to keep them this way. and Roest, W.R., 2008, Age spreading rates and spreading asymmetry of the world's ocean crust, Geochemistry, Geophysics, Geosystems, 9, Q04006, doi:10.1029/2007GC001743. Digital isochrons of the world's ocean floor.J. Seafloor age 5 my isochrons (KMZ File 9.6MB Aug14 14)ĭata source: Muller, R. Seafloor age 10 my isochrons (KMZ File 227kB Aug14 14) Geological Survey, USDA Farm Service Agency Oregon United States Earth View is a collection of the most beautiful and striking landscapes found in Google Earth. USGS Earthquakes 2.5+ for the past 30 days, plotted by depth, updated every 15 minutes (KMZ File 442bytes Aug14 14) Oregon, United States Earth View from Google 2023 Cnes/Spot Image, Maxar Technologies, State of Ohio / OSIP, U.S. ![]() USGS Earthquakes 1.0+ for the past week, plotted by depth, updated every 5 minutes (KMZ File 440bytes Aug14 14) USGS 5.4+ epicenters colored by depth.kmz (KMZ File 1.5MB Dec25 16) 'USGS Earthquakes 5.4+ 1986-2015, colored by depth']ĭata source: compiled from USGS NEIC catalog Plate boundary model with orogens (KMZ File 79kB Aug14 14)ĭata source: Bird, Peter (2003) An updated digital model of plate boundaries, Geochemistry Geophysics Geosystems, 4(3), 1027 converted into Google Earth format by Thomas Chust (Ludwig-Maximilians-Universitat Munchen). Plate boundary model (KMZ File 66kB Aug14 14) Handout for Exploring Plate Tectonics with Google Earth, less guided version (Acrobat (PDF) 130kB Feb23 13) Individual Google Earth data layers Handout for Exploring Plate Tectonics with Google Earth, less guided version (Microsoft Word 51kB Feb23 13) Handout for Exploring Plate Tectonics with Google Earth, more guided version (Acrobat (PDF) 204kB Feb23 13) Handout for Exploring Plate Tectonics with Google Earth, more guided version (Microsoft Word 2007 (.docx) 103kB Feb23 13) The sources of the compiled data are given in the Google Earth layer menu.ĭynamic Earth kmz file for use with Plate Tectonics exercises (KMZ File 1.1MB Feb21 23) Materials include two versions of the student handout, one more explicitly guided than the other, and a Google Earth kmz file with data layers compiled from other a variety of sources. The kmz file compiled by the author is a easy-to-use resource adaptable for other activities. No background is assumed, although it is helpful for students to have have a basic knowledge of global geography. Depending on a student's previous experience with Google Earth, background in plate tectonics, and ease with simple graphing and calculations, and how far the instructor wants to take it, the whole exercise typically takes several hours to a lab period or two. For our faster-paced introductory class typically taken by more quantitatively-able students including engineers, the less-guided versions is assigned as a problem set then discussed at precept. For example, for our hazards course for non-majors, I assign a portion of the more-explicitly guided version as a preparation assignment, then students complete the rest during a lab session. I have used it in a number of class settings. I submit two versions, one being slower-paced and more explicitly guided. This exercise is adaptable for all level of students, from introductory level students to more-advanced students wanting a crash course in plate tectonics. ![]()
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