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I think that this template should be deleted. No one in the lunar community uses the term "basin groups" or "Hadean". Basin groups and "Imbrian" are never applied to the Earth either. Lacking a good rationale for keeping this, I will soon put this template up for deletion. Lunokhod 18:48, 14 January 2007 (UTC)
How can it be said that the USGS doesn't recognize the Hadean when it is a term both in their Thesaurus and a search term in GEOLEX? -- Bejnar 03:35, 17 January 2007 (UTC)
It appears that these subdivions of the Hadean come from Harland et al. (1989). In the text, he advocated using the lunar geolocic time scale for the Hadean period, which inludes the Pre-Nectarian, Nectarian, and Lower Imbrian periods. He then notes that the pre-Nectarian has been subdivided into Cryptic, Basin Group 1, and Basin Groups 2-9 by Wilhelms (1987). However, when you look at his figure, he only showed the subdivisions of the Pre-Nectarian (i.e., Cryptic and Basin Goups), but not the Pre-Nectarian itself. The only way that I can interpret this inconsistency is that the figure contains an "typo."
Thus, if we are to keep this template (which I would prefer not too because using the lunar geologic time scale for the Earth is a very minor opinion in the scientific literature) I suggest that Cryptic and Basin Groups be replace with Pre-Nectarian, as per the original proposal of Harland et al. (1989). Otherwise, I will insist that this be given a citation from a reputable source, which does not include the Harland et al. book.
I highly suggest that those interested read the Harland et al. book. I am certain that you will come to the same conclusion. Lunokhod 15:22, 20 January 2007 (UTC)
Geology Template‑class | |||||||
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I think that this template should be deleted. No one in the lunar community uses the term "basin groups" or "Hadean". Basin groups and "Imbrian" are never applied to the Earth either. Lacking a good rationale for keeping this, I will soon put this template up for deletion. Lunokhod 18:48, 14 January 2007 (UTC)
How can it be said that the USGS doesn't recognize the Hadean when it is a term both in their Thesaurus and a search term in GEOLEX? -- Bejnar 03:35, 17 January 2007 (UTC)
It appears that these subdivions of the Hadean come from Harland et al. (1989). In the text, he advocated using the lunar geolocic time scale for the Hadean period, which inludes the Pre-Nectarian, Nectarian, and Lower Imbrian periods. He then notes that the pre-Nectarian has been subdivided into Cryptic, Basin Group 1, and Basin Groups 2-9 by Wilhelms (1987). However, when you look at his figure, he only showed the subdivisions of the Pre-Nectarian (i.e., Cryptic and Basin Goups), but not the Pre-Nectarian itself. The only way that I can interpret this inconsistency is that the figure contains an "typo."
Thus, if we are to keep this template (which I would prefer not too because using the lunar geologic time scale for the Earth is a very minor opinion in the scientific literature) I suggest that Cryptic and Basin Groups be replace with Pre-Nectarian, as per the original proposal of Harland et al. (1989). Otherwise, I will insist that this be given a citation from a reputable source, which does not include the Harland et al. book.
I highly suggest that those interested read the Harland et al. book. I am certain that you will come to the same conclusion. Lunokhod 15:22, 20 January 2007 (UTC)