Earth Science

A layer of sandstone is found on top of a layer of limestone in a geologic cross section. What does this tell you about how the sea level changed in that area?

I know how metamorphic rocks are formed but how are metamorphic rocks formed into other metamorphic rocks?

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  1. Check these sites.

    http://www.fi.edu/fellows/fellow1/oct98/expert/limestone.htm

    http://geology.about.com/library/bl/images/blsandstone.htm

    http://www.bobspixels.com/kaibab.org/geology/gc_layer.htm

    http://en.wikipedia.org/wiki/Metamorphic_rock

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    Ms. Sue

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