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Showing results for tags 'stratigraphy'.
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Hi All, Like many of you, no doubt, I like to keep detailed records of where all my fossils are from. One thing I'm not sure of, though, is in what order stratigraphic data should be written. Do you move from the largest units (groups) to the smaller ones (beds and horizons), or visa versa? And whereabouts should geographical information be placed, not to mention periods, dates, etc. I'd be surprised if there isn't a convection about these sort of things. Can anyone tell me what it is?
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Does anyone know where I can get my hands on a decent stratigraphic wall map of North America? Or a stratigraphic atlas of the United States? I've seen very pretty ones, but I can't find one that is commercially available. Thanks in advance!
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I've been curious about 'core samples' obtained from wells and geologic exploration. Is there anywhere online that one can look at examples of bedrock cores. For example, I'd love to see what a cambrian core looks like from deep in the Illinois bedrock and how deep the sample was located. I know mostly they are looking at microfossils to determine the age, but I've seen a few times where more easily identifiable fossils are found in the cores. Anyone have examples or know where some are found. And with any examples, it would be of interest to know how many feet deep the core comes from.
