![]() | Oil shale geology has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it. | ||||||||||||
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![]() | Material from Oil shale was split to Oil shale geology on 09:47, 19 July 2007. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted so long as the latter page exists. Please leave this template in place to link the article histories and preserve this attribution. The former page's talk page can be accessed at Talk:Oil shale. |
I changed the opening sentence of the article from "Oil shale geologically includes a group of fine-grained sedimentary rocks which contain significant amounts of kerogen." to "Oil shale includes a group of fine-grained sedimentary rocks which contain significant amounts of kerogen." because I felt it was an unnecessary qualification. This article is about the geology of oil shale anyway. I think it reads better too. Unlike other (more significant) geological terms including "rock" and "volcano", I doubt oil shale is confused with anything non-geological. GeoWriter 08:15, 19 August 2007 (UTC)
Found following information, which is probably worth to add into this article. However, as I'm not the expert on this field, maybe somebody who is more familiar with this topic, could assist.
"Hutton (1987) recognised three major macerals in oil shale: telalginite, lamalginite, and bituminite. Telalginite is defined as structured organic matter composed of large colonial or thick-walled unicellular algae such as Botryococcus and Tasmanites. Lamalginite includes thin-walled colonial or unicellular algae that occur as distinct laminae, but displays little or no recognisable biologic structures. Under the microscope, telalginite and lamalginite are easily recognised by their bright shades of yellow under ultraviolet/blue fluorescent light. The third maceral, bituminite, is another important component in many oil shales. It is largely amorphous, lacks recognisable biologic structures, and displays relatively low fluorescence under the microscope. This material has not been fully characterised with respect to its composition or origin, although it is often a quantitatively important component of the organic matter in many marine oil shales. Other organic constituents include vitrinite and inertinite, which are macerals derived from the humic matter of land plants. These macerals are usually found in relatively small amounts in most oil shales." http://www.worldenergy.org/publications/survey_of_energy_resources_2007/oil_shale/647.asp Beagel 19:53, 24 October 2007 (UTC)
There is a problem with following block:
The problem is that this information, obtained from http://www.solarnavigator.net/coal.htm and http://www.eng.uwo.ca/people/esavory/ES%20832_Lect%204.ppt , talks about formation of coal. It needs also verification and additional references to prove that same process applies also to oil shale. Beagel 18:00, 8 November 2007 (UTC)
Hi there, i just wanted a clarification regarding "One theory supposes that the organic material in the Irati oil shale originates from algae deposited in a freshwater to brackish lacustrine environment"......In the above sentence, what does the phrase "freshwater to brackish lacustrine environment" mean??? Does it mean "oil shale originates from algae deposited in a freshwater environment" or does it mean "oil shale originates from algae deposited in a brackish lacustrine environment" ??? or does it mean something else???.... Gprince007 ( talk) 07:21, 28 July 2008 (UTC)
I'm going to review this GA nom now. Intothewoods29 ( talk) 21:58, 30 July 2008 (UTC)
Well, I think it fulfills all of the GA requirements, so I'm promoting it!
1. Worded and organized well, plenty of wikilinks to help in comprehension
2.reliable refs
3.doesn't get off topic
4.neutral
5.looks stable
6.every pic is tagged
Feel free to go over the article again too. My recommendations for FA: you only have 11 refs for all that info. You might want to try and get some more. Also, at the end, you list a bunch of formations from around the world, then you only cover 3 countries - the US, Brazil, and Estonia. Maybe explain why or add sections about other countries... just a thought for later.
Anyway, good job! Intothewoods29 ( talk) 22:12, 30 July 2008 (UTC)