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- Newsgroups: sci.geo.geology
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- From: stgprao@st.unocal.COM (Richard Ottolini)
- Subject: Re: life, Moon and geology
- Message-ID: <1992Nov18.011704.7514@unocal.com>
- Sender: news@unocal.com (Unocal USENET News)
- Organization: Unocal Corporation
- References: <1992Nov11.175421.19955@mailer.cc.fsu.edu>
- Date: Wed, 18 Nov 1992 01:17:04 GMT
- Lines: 16
-
- In article <1992Nov11.175421.19955@mailer.cc.fsu.edu> cain@geomag.gly.fsu.edu (Joe Cain) writes:
- >
- > Some of the discussion in planetary geology class has centered on
- >the role that life had on sculpting Earth's geology so I thought I
- >might ask the net for opinions or comments.
- >
- > First, we have read arguments that life would not have started
- >or evolved on Earth at all if we did not have such a large Moon. That
- >is, there would not have been tidal pools in which organics could
- >concentrate, and the Earth's axis would not have been so stable.
- >Because the moon's of Mars are such tiny captured asteroids its axis
- >wobbled more and long term seasonal variations would have helped wipe
- >any life that had started there during the period when it must have
- >been much warmer and wetter. Any comments on this scenario?
-
- The Sun causes diurnal tides too, but they are smaller than the moon's.
-