didn’t study advanced geometry and physics engine).The best (most frightening) part? Read on… (source: SketchUp website) SketchUp allows the common man to easily create 3D environments and models, apply textures… all the stuff that 3D Studio does, but for non-graphic artists (i.e. Of course, as expected, the Mac version isn’t available yet in a « Googlified » version, but the trial of V4 I had used was simply beautiful, intuitive and oh, so powerful. This technique can be applied to any area in Google Earth where a mismatch exists between real and virtual topography.I was amazed to see that one of the best software I’ve ever used has now been snapped up by Google. The SketchUp model was then imported into Google Earth to show the outcrop and interstate as it looks today, with the interstate passing uninterrupted through a ridge rather than draping over hilly topography.
To correct for this, terrain modifications were made with Sketch-Up by copying and virtually excavating the landscape. Google Earth satellite and Street View images show the outcrop, but the digital terrain in Google Earth does not reflect the approximate 150,000 m 3 of rock removed to form this roadcut. Near mile marker 44 along I-26, an ~250 m-long and 65 m-high outcrop was formed as part of the early 1990s construction. The series of outcrops created along the corridor provide an exceptional traverse through Grenvillian-age basement and cover strata which contain numerous stacked Alleghanian thrust sheets and shear zones. 23 (future I-26) was widened to four lanes from Sams Gap at the North Carolina–Tennessee line to the Nolichucky River near Erwin, Tennessee, in the early 1990s. Such is the case along sections of the I-26 corridor in Unicoi County, northeastern Tennessee. Users of Google Earth for field research often encounter disparities between the digital topography and the current-day Earth's surface, as newly formed outcrops may not be represented in the topography. The creation of new outcrops through construction is an important source of field data for geologists, especially in parts of the Appalachians with limited rock exposure.
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