Hello,GraceSCKao . I think you are reading into the text too much. (Also, this is question 6, not 7. It took me a minute to figure out that what I was prepared to write had nothing to do with the question you quoted above.)
I did not read much beyond the first paragraph and the topic sentence of the secondparagraph:
I did not read much beyond the first paragraph and the topic sentence of the secondparagraph:
Quote:
According to a recent theory, Archean-age gold-quartz vein systems were formed more than two billion years ago from magmatic fluids that originated from molten granite-like
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Screen Shot 2022-07-11 at 15.07.41.png [ 39.16 KiB | Viewed 22 times ]
