Flinders Ranges MapThis area in southeastern Australia is particularly important for geologic histor

Flinders Ranges MapThis area in southeastern Australia is particularly important for geologic history. The Flinders Ranges are the result of a sedimentary basin that began forming and filling 800 million years ago prior to being built into mountains starting 500 million years ago, creating the complex folding and uplifts that are now exposed at the surface.Because of the time represented by this basin, rocks from it cover the proposed “Snowball Earth” events and provide some of the best examples of glacial processes.Those rocks are then followed by rocks from the Ediacaran period, the time just before the Cambrian when multicellular, animal life existed on Earth, but without hard parts that are easy to fossilize. In fact, the Ediacaran hills are just southwest of the area covered by this satellite image collected by the European Space Agency’s Sentinel Satellites.This is a false-color image. Different minerals and different rocks are absorbing light at different wavelengths, and those absorbances are being assigned to colors that we can see. Thus, we’re using infrared light to be able to distinguish one rock from another, one layer from another. While the rocks don’t look like this in the field, the image itself would be extremely useful because this is basically a broad-scale geologic map, collected from space. You can even make out areas of active sediment cover at the western side.The original image would be large enough to print and hang on a wall.-JBBImage credit: ESAhttps://flic.kr/p/2jrAweP -- source link

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