A cemetery in New England contains headstones from the seventeenth to the twenty-first centuries. Headstones from the seventeenth century are made of slate
Headstones from the mid-nineteenth century are made of marble. The information on the seventeenth-century headstone is clear and easy to read, whereas the nineteenth-century headstone is now illegible. Why? What weathering has occurred?What will be an ideal response?
Answer: The slate headstone will be more legible/resistant. Marble is a softer rock and much more prone to dissolution from slightly acidic rain.
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Light winds and poor vertical mixing can produce a condition known as____________________
Fill in the blank with correct word.