File:3D laser scan of speleothems in cave.png
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Summary
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| Description |
English: A black and white image of speleothems (secondary cave formations) in a cave created by 3D laser scanning. The scan is composed of about 40 million data points recorded each with xyz coordinates and a reflective value used to create a photo-like immage.The white spheres are used for refference. The picture was authored by geologists Renate Fenzlein (BSc), Ingo Bauer (Dipl. Ing.) and Stephan Kempe (Dr. Prof. of Pysical Geology) of the Institute of Applied Geosciences, Technische Universität Darmstadt. English: 3D laser scan image of speleothems |
| Date | |
| Source | Own work |
| Author | KempeIAGeng |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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The exact position and name of cave is withheld due to natural protection. The picture illustrates several speleothem morphologies and contains paleoclimate information. In the background one can see very thick columns, formed during successions of warm phases in the Pleistocene. To the right side several stalagmites are seen, while stalactites are generally rare because they are removed during cold phases when the cave fills with ice. The cave ice likewise has broken stalagmites and deposited them on the floor (visible on the floor at the right side of the cave). Brocken speleothems, often wrongly considered to be caused by earthquakes, are the traces of cave ice formed during glacial maxima (the last dating back to 20 000 years ago) when the annual temperatures in the area were 15°C lower than today and Germany suffered from deep-seated permafrost.
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This image was uploaded as part of European Science Photo Competition 2015. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:46, 4 November 2015 | | 821 × 547 (568 KB) | KempeIAGeng (talk | contribs) | User created page with UploadWizard |
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