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triaromatic dinosteroids

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Journal Article
Journal: Geology
Published: 01 February 1996
Geology (1996) 24 (2): 159–162.
...J. Michael Moldowan; Jeremy Dahl; Stephen R. Jacobson; Bradley J. Huizinga; Frederick J. Fago; Rupa Shetty; David S. Watt; Kenneth E. Peters Abstract New data from numerous detailed mass-spectrometric studies have detected triaromatic dinosteroids in Precambrian to Cenozoic rock samples...
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Representative saturate and aromatic fraction fragmentograms of Carbonifero...
Published: 15 July 2019
29 trimethyl triaromatic dinosteroid.
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Scatter plots of biomarker parameters used to justify oil groupings. Each o...
Published: 01 April 2004
30 tetracyclic polyprenoids (TPP ratio) vs. gammacerane index. 95% confidence intervals for group 2 oils are not plotted on any of the plots because of the small sample size ( n = 3). (C) Plot of C 30 methyl-steranes vs. triaromatic dinosteroids. (D) Plot of C 35 /C 34 homohopane vs. pristane
Journal Article
Published: 01 August 2011
Russ. Geol. Geophys. (2011) 52 (8): 768–772.
... and 0.91% of the total polycyclic aromatic compounds. Alkylbenzenes ( m / z 92), methylbenzenes ( m / z 105), biaromatic hydrocarbon ( m / z 205), and triaromatic dinosteroids ( m / z 245) have been identified in the aromatic fraction. The concentrations of alkylbenzenes and methylbenzenes...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 2007
AAPG Bulletin (2007) 91 (9): 1273–1293.
... in Peters and Moldowan (1993). Triaromatic methylsteroid ratios (measured on the m / z 245 chromatograms) ( Moldowan et al., 1996 ) are markedly different between the Triassic and Jurassic samples ( Table 3 ). Specifically, Triassic source rock samples are completely lacking in dinosteroids...
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Journal Article
Journal: AAPG Bulletin
Published: 15 July 2019
AAPG Bulletin (2019) 103 (7): 1625–1652.
... 29 trimethyl triaromatic dinosteroid. ...
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Journal Article
Journal: AAPG Bulletin
Published: 11 October 1995
AAPG Bulletin (1995) 79 (10): 1481–1493.
...) ( Summons et al., 1987 ). For example, the Baghewala-1 oil lacks triaromatic dinosteroids. Absence of triaromatic dinosteroids in petroleum indicates a Triassic or older marine source rock (J. M. Moldowan, 1995, personal communication). The Baghewala-1 oil is remarkably similar to unusual oils...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 2000
AAPG Bulletin (2000) 84 (8): 1109–1128.
...-n-propylcholestane ratios than the Cambrian rock extracts in this study. Table 4 Summary Attributes of the Genetic Groups Abundant triaromatic (TA) dinosteroids occur in the Cambrian and Jurassic extracts but were detected in only small amounts in the Middle-Upper Ordovician...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 2012
AAPG Bulletin (2012) 96 (6): 1121–1146.
... in the Pechora Sea and Spitsbergen. Families II, III, V, and VI show ETR less than or equal to 2, with most less than 1.2, which could indicate a Jurassic source rock. Triaromatic dinosteroids are generally abundant in Mesozoic samples but are below detection limits for most of the Paleozoic marine samples...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 2004
AAPG Bulletin (2004) 88 (4): 447–481.
... 30 tetracyclic polyprenoids (TPP ratio) vs. gammacerane index. 95% confidence intervals for group 2 oils are not plotted on any of the plots because of the small sample size ( n = 3). (C) Plot of C 30 methyl-steranes vs. triaromatic dinosteroids. (D) Plot of C 35 /C 34 homohopane vs. pristane...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 2016
AAPG Bulletin (2016) 100 (3): 319–343.
... a Triassic or younger age for the source rock. Triaromatic dinosteroids are generally abundant in Mesozoic oils and absent in Paleozoic oils ( Peters et al., 2005 ). Therefore, the dinosteranes/(dinosteranes + stigmastane 20R) ratio ranges from 0.07 to 0.26, and the (D 3 + D 4 + D 5 + D 6 )/(D 3-6 + 3...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 2003
AAPG Bulletin (2003) 87 (5): 817–846.
... to be varying amounts of algal-derived biomarker indicators. In addition, the Zuunbayan samples have lower pristane/phytane ratios and lower n-alkane concentrations than the Tsagan Els samples. The Tsagan Els oil also contains lower but detectable amounts of β-carotane, gammacerane, triaromatic dinosteroids...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 2014
AAPG Bulletin (2014) 98 (6): 1235–1267.
...; NDR = C 26 β α   24 / ( 24 + 27 ) -nordiacholestane (m/z 358-217); DMD 3 = C 28 triaromatic desmethyldinosterane (modified from Barbanti et al., 2011 ); TA - Dino = triaromatic dinosteroids ( Moldowan et al., 1996 , 2001 ); Pr...
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Journal Article
Journal: Geology
Published: 01 December 2008
Geology (2008) 36 (12): 923–926.
..., as expressed in the synchronous cessation of significant phosphogenic events, complete closure of the phosphatization window ( Cook, 1992 ; Porter, 2004 ), and decline in acritarch (phytoplankton) species diversity and triaromatic dinosteroid frequency ( Moldowan et al., 2001 ; Zhuravlev, 2001 ). We...
FIGURES
Journal Article
Published: 07 October 2016
Petroleum Geoscience (2017) 23 (2): 190–209.
... analyses of triaromatic dinosteroids (Karlsen pers. comm. 2013) suggested a Palaeozoic age, and a Permian source-rock affinity for sample C (7120/2-1), while Killops et al . (2014) suggested a Triassic origin. The samples Æ–Æ2 are not shown in Figure 4 owing to a lack of δ 13 C data. Still...
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Series: AAPG Memoir
Published: 01 January 2000
DOI: 10.1306/M73705C2
EISBN: 9781629810706
... terpanes were also used: C 19 -tri/C 23 -tri, C 23 -tri/C 24 -tri, C 26 -tri/C 25 -tri, and C 24 -tetra/C 26 -tri. Finally, the distribution of the C 29 -triaromatic dinosteroids and triaromatic 3- and 4-methyl steroids measured from m/z 245 ( Moldowan et al., 1995 ) were used, and the abundance...
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Journal Article
Journal: AAPG Bulletin
Published: 01 April 2001
AAPG Bulletin (2001) 85 (4): 601–619.
..., and this may explain why the biomarker parameters are indicative of immature oils. All samples contain triaromatic dinosteroids, which are derived from dinoflagellates ( Moldowan et al., 1996 , 1998) . Although dinoflagellates comprise the second largest group of primary producers in the modern oceans...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2001
AAPG Bulletin (2001) 85 (10): 1817–1845.
... having elevated triaromatic dinosteroid levels (commonly observed in post-Triassic source rocks), are also found throughout Oman. Although such unexpected components are expected to be the result of contamination by drilling fluid additives, whose signature is enhanced by the low abundance...
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Journal Article
Published: 01 May 2000
Proceedings of the Yorkshire Geological Society (2000) 53 (1): 1–16.
..., may have survived this OAE. This contention could be tested by analysing for molecular biomarkers such as triaromatic dinosteroids ( Moldowan et al . 1996 ). This Lower Toarcian dinoflagellate cyst 'blackout' also correponds with high TOC values throughout Europe and it can be considered a regional...
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Journal Article
Journal: AAPG Bulletin
Published: 15 January 2021
AAPG Bulletin (2021) 105 (1): 65–107.
... . Li , M. , T.-G. Wang , P. G. Lillis , C. Wang , and S. Shi , 2012a , The significance of 24-norcholestanes, triaromatic steroids and dinosteroids in oils and Cambrian–Ordovician source rocks from the cratonic region of the Tarim Basin, NW China : Applied Geochemistry , v...
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