Dictionary » S » Shale



1. A shell or husk; a cod or pod. The green shales of a bean.

2. [G. Shale.

(Science: geology) A fine-grained sedimentary rock of a thin, laminated, and often friable, structure. Bituminous shale. See Bituminous.

Origin: AS. Scealy, scalu. See Scalme, and cf. Shell.

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5 best proofs of evolution

... Gould's book mentioned above as well as his "It's a Wonderful Life" that considers to immense diversity of life seen in the Burgess shale deposits - that they were wonderfully adapted to the environment but most left no modern evolutionary trace.

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by JorgeLobo
Thu May 31, 2012 3:21 am
Forum: Evolution
Topic: 5 best proofs of evolution
Replies: 170
Views: 269331

Re: Theories - Origin of Life

... do not have mineralized skeletons, make their appearance in the early Cambrian of Chengjiang, Yunnan Province in China.. The Mid Cambrian Burgess Shale fauna from British Columbia, preserves many soft-bodied fossils similar to those of the Chengjiang fauna. This indicates that these forms were ...

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by scottie
Mon Nov 14, 2011 6:47 pm
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1128267

Theories - Origin of Life

Yes, the question, where did the carbon in the Earth's atmosphere? And it got in touch with calcium and oxygen in carbonates. Yes, even in deposits shale, coal and oil.

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by LeoPol
Fri Sep 30, 2011 10:43 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 563
Views: 1128267

Re: Evolution of sexual reproduction

... http://mw2.merriam-webster.com/dictionary/artifactual?show=0&t=1282767154 (2) “As more fossil beds are found… Well there is the famous Burgess shale in Canada, the Chengjiang strata in China perhaps the two most studied sites. There of course other sites, North West Scotland, the Bastian formation ...

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by jevg
Wed Aug 25, 2010 9:47 pm
Forum: Evolution
Topic: Evolution of sexual reproduction
Replies: 29
Views: 36199

Re: Natural selection is proven wrong

... to become more rare” (Ref: Futuyma, Douglas Evolution 2005 I suggest you read It's a Wonderful Life by Steven J. Gould. It's about the Burgess Shale and deals with many of the questions you have about the Cambrian explosion. it was due to the cambrain explosion that gould formulated punctuated ...

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by gamila
Mon Apr 27, 2009 4:23 pm
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 247
Views: 689042
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