123:. The two guesses as to the reason were that it was a biological phenomenon within the species or that the species had just degraded. Using chromatography with He as a carrier gas, degradation was visible in the samples. There was found to be a presence of beta and gamma carotane derivatives. The derivatives were cross-referenced with synthesized derivatives that were produced via the catagenesis of beta carotene through hydrous pyrolysis.
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Carotane was first measures in the Green River
Formation. It was discovered using gas-liquid chromatography and GC/MS. The sample was purified with a thin layer of Ag silica, and larger samples of 5 μg were used to give more accurate results and reduce the noise in the MS peaks. What was found was
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Given its long degradation time, carotane acts as an important biomarker Given how long it is preserved. It remains best in sediment and oil environments where it can last years. Beta-carotane, in specific, acts as a biomarker for saline and low lacustrine environments. This means carotane can be
88:. However, where carotene has double bonds, carotane only has single bonds. This is the only difference in the structure given that carotane represents the degradation of carotene. Given the length of time it takes to degrade carotane, the species allows for a more extensive geologic record.
81:. These colors are beneficial to their host species that tend to be plants and algae. Within plants, carotenoids play the major roles of allowing light to be absorbed via photosynthesis as well ad providing photoprotection through a non-photochemical quenching.
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334:"Identification of carotane breakdown products in the 1.64billion year old Barney Creek Formation, McArthur Basin, northern Australia"
279:"Geochemical significance of β-carotane in lacustrine oils from the Shahejie Formation of the Dongying Depression, eastern China"
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The tetraterpene is also a product of the degradation of carotene and thus represents an important
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The Barney Creek Study was set up to determine why deep levels of carotane did not exist in the
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Wang, Qianru; Huang, Haiping; Li, Zheng; Ma, Yong; Zeng, Jianhui; Larter, Steve (2021-06-01).
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167:"Carotenoids 2: Genetics and molecular biology of carotenoid pigment biosynthesis"
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used as a biomarker to identify previous water-based habitats.
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Murphy, Mary T. J.; McCormick, A.; Eglinton, G. (1967-09-01).
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165:Armstrong, G. A.; Hearst, J. E. (February 1996).
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224:"Perhydro-β-Carotene in the Green River Shale"
69:is a plant pigment that belongs to a class of
332:Lee, Carina; Brocks, Jochen J. (2011-05-01).
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102:the degradation results of carotene.
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184:10.1096/fasebj.10.2.8641556
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145:Linus Pauling Institute
121:Barney Creek Formation
92:Measurement techniques
391:Green River Formation
97:Green River Formation
338:Organic Geochemistry
283:Organic Geochemistry
350:2011OrGeo..42..425L
295:2021OrGeo.15604241W
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149:. Retrieved
147:. 2014-04-28
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115:Barney Creek
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106:Preservation
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386:Carotenoids
75:carotenoids
380:Categories
289:: 104241.
151:2021-09-26
127:References
366:0146-6380
319:235582921
311:0146-6380
193:0892-6638
86:biomarker
264:40339193
256:17770425
209:22385652
67:Carotane
346:Bibcode
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228:Science
201:8641556
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