Biomarker stratigraphy in the Athel Trough of the South Oman Salt Basin at the Ediacaran-Cambrian Boundary
Anaïs Roussel
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
Search for more papers by this authorCorresponding Author
Xingqian Cui
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
School of Oceanography, Shanghai Jiao Tong University, Shanghai, China
Correspondence
Roger E. Summons and Xingqian Cui, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Emails: rsummons@mit.edu (R. E. S.); xcui@mit.edu (X. C.)
Search for more papers by this authorCorresponding Author
Roger E. Summons
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
Correspondence
Roger E. Summons and Xingqian Cui, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Emails: rsummons@mit.edu (R. E. S.); xcui@mit.edu (X. C.)
Search for more papers by this authorAnaïs Roussel
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
Search for more papers by this authorCorresponding Author
Xingqian Cui
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
School of Oceanography, Shanghai Jiao Tong University, Shanghai, China
Correspondence
Roger E. Summons and Xingqian Cui, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Emails: rsummons@mit.edu (R. E. S.); xcui@mit.edu (X. C.)
Search for more papers by this authorCorresponding Author
Roger E. Summons
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
Correspondence
Roger E. Summons and Xingqian Cui, Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
Emails: rsummons@mit.edu (R. E. S.); xcui@mit.edu (X. C.)
Search for more papers by this authorAbstract
The South Oman Salt Basin (SOSB) has been studied extensively for knowledge concerning the habitat of the enigmatic Ediacaran–Cambrian oils that are produced from that region. Geological, geochemical, geophysical, and geochronological investigations have all contributed to improved understanding of the range of late Neoproterozoic depositional environments recorded there. Of particular interest has been the deep Athel depocenter within the SOSB that features a silica-rich interval known as the Al Shomou Member or Athel Silicilyte and the co-eval A4 carbonate–evaporite sequence that straddles the Ediacaran–Cambrian boundary. The deep basin has been suggested to be anoxic and euxinic based on studies of sulfur isotopes, trace metal distributions and other proxies. Organic geochemistry has provided some clues concerning aspects of the depositional environments and microbial communities prevailing during this interval. However, ambiguities remain including a paucity of convincing molecular evidence for euxinia in the photic zone of the basin. Here, we present a comprehensive study of biomarker hydrocarbons, including steroids, triterpenoids, and carotenoids. Among the compounds detected is a distinctive array of aromatic carotenoids. Relatively low abundances of monoaromatic carotenoids, such as chlorobactane, okenane, and β-isorenieratane, suggest the possibility of transient photic zone euxinia with a shallow chemocline or, perhaps, exogenous inputs from microbial mats. However, it is the dominance of renieratane and renierapurpurane over isorenieratane in diaromatic carotenoids and their association with abundant C38 and C39 carotenoids that identifies cyanobacteria as major contributors to the inventory of carotenoids. Our results, based on multiple lines of molecular evidence and statistical analysis, also suggest that the Athel Silicilyte was biogeochemically distinct from the other units of the Ara Group. Overall, our study has important implications for understanding other late Neoproterozoic depositional environments.
Supporting Information
Filename | Description |
---|---|
gbi12407-sup-0001-SupInfo.docxWord document, 532.7 KB | Supplementary Material |
gbi12407-sup-0002-SupData.pdfPDF document, 48.8 KB | Supplementary Material |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
REFERENCES
- Aitken, J. (1966). Middle Cambrian to Middle Ordovician cyclic sedimentation, southern Rocky Mountains of Alberta. Bulletin of Canadian Petroleum Geology, 14, 405–441.
- Al Rajaibi, I. M., Hollis, C., Macquaker, J. H., & Pufahl, P. (2015). Origin and variability of a terminal Proterozoic primary silica precipitate, Athel Silicilyte, South Oman Salt Basin, Sultanate of Oman. Sedimentology, 62, 793–825. https://doi.org/10.1111/sed.12173
- Allen, P. A. (2007). The Huqf Supergroup of Oman: Basin development and context for Neoproterozoic glaciation. Earth-Science Reviews, 84, 139–185. https://doi.org/10.1016/j.earscirev.2007.06.005
- Al-Siyabi, H. A. (2005). Exploration history of the Ara intrasalt carbonate stringers in the South Oman Salt Basin. GeoArabia, 10, 39–72.
- Amend, J. P., & Shock, E. L. (2001). Energetics of overall metabolic reactions of thermophilic and hyperthermophilic Archaea and Bacteria. FEMS Microbiology Reviews, 25, 175–243. https://doi.org/10.1111/j.1574-6976.2001.tb00576.x
- Amthor, J., Faulkner, T., Frewin, N., Alixant, J., Matter, A., & Ramseyer, K. (1998). The Athel play in Oman: Controls on reservoir quality. GeoArabia, 3, 61–62.
- Amthor, J. E., Grotzinger, J. P., Schröder, S., & Schreiber, B. C. (2002). Tectonically-Driven Evaporite–Carbonate Transitions in a Precambrian/Cambrian Saline Giant: Ara Salt Basin of South Oman. American Association of Petroleum Geologists Annual Convention, March 10–13th, Houston, Abstract Volume, pp. A6–A7.
- Amthor, J. E., Ramseyer, K., Matter, A., Pettke, T., & Fallick, A. E. (2015). Diagenesis of a light, tight-oil chert reservoir at the Ediacaran/Cambrian boundary, Sultanate of Oman. GeoArabia, 20, 147–178.
- Behrens, A., Schaeffer, P., Bernasconi, S., & Albrecht, P. (2000). Mono-and bicyclic squalene derivatives as potential proxies for anaerobic photosynthesis in lacustrine sulfur-rich sediments. Geochimica Et Cosmochimica Acta, 64, 3327–3336. https://doi.org/10.1016/S0016-7037(00)00423-3
- Bhattacharya, S., Dutta, S., & Summons, R. E. (2017). A distinctive biomarker assemblage in an Infracambrian oil and source rock from western India: Molecular signatures of eukaryotic sterols and prokaryotic carotenoids. Precambrian Research, 290, 101–112. https://doi.org/10.1016/j.precamres.2016.12.013
- Blankenship, R. E., Madigan, M. T., & Bauer, C. E. (2006). Anoxygenic photosynthetic bacteria, Dordrecht, Netherlands: Springer.
- Bowring, S. A., Grotzinger, J. P., Condon, D. J., Ramezani, J., Newall, M. J., & Allen, P. A. (2007). Geochronologic constraints on the chronostratigraphic framework of the Neoproterozoic Huqf Supergroup, Sultanate of Oman. American Journal of Science, 307, 1097–1145. https://doi.org/10.2475/10.2007.01
- Brocks, J. J., Jarrett, A. J., Sirantoine, E., Hallmann, C., Hoshino, Y., & Liyanage, T. (2017). The rise of algae in Cryogenian oceans and the emergence of animals. Nature, 548, 578. https://doi.org/10.1038/nature23457
- Brocks, J. J., Love, G. D., Summons, R. E., Knoll, A. H., Logan, G. A., & Bowden, S. A. (2005). Biomarker evidence for green and purple sulphur bacteria in a stratified Palaeoproterozoic sea. Nature, 437, 866. https://doi.org/10.1038/nature04068
- Brocks, J. J., & Schaeffer, P. (2008). Okenane, a biomarker for purple sulfur bacteria (Chromatiaceae), and other new carotenoid derivatives from the 1640 Ma Barney Creek Formation. Geochimica Et Cosmochimica Acta, 72, 1396–1414. https://doi.org/10.1016/j.gca.2007.12.006
- Bryant, D. A., Liu, Z., Li, T., Zhao, F., Costas, A. M. G., Klatt, C. G., … Overmann, J. (2012). Comparative and functional genomics of anoxygenic green bacteria from the taxa Chlorobi, Chloroflexi, and Acidobacteria. R. Burnap & W. Vermaas Functional genomics and evolution of photosynthetic systems (pp. 47–102). Dordrecht, Netherlands: Springer.
- Canfield, D. E., Farquhar, J., & Zerkle, A. L. (2010). High isotope fractionations during sulfate reduction in a low-sulfate euxinic ocean analog. Geology, 38, 415–418. https://doi.org/10.1130/G30723.1
- Connock, G. T., Nguyen, T. X., & Philp, R. P. (2018). The development and extent of photic-zone euxinia concomitant with Woodford Shale deposition. AAPG Bulletin, 102, 959–986. https://doi.org/10.1306/0726171602017224
- Cui, X., Liu, X.-L., Shen, G., Ma, J., Husain, F., Rocher, D., … Summons, R. E. (2020). Niche expansion for phototrophic sulfur bacteria at the Proterozoic-Phanerozoic transition. Proceedings of the National Academy of Sciences of the United States of America, in press. https://doi.org/10.1073/pnas.2006379117
- Damsté, J. S. S., Kock-van Dalen, A., & de Leeuw, J. W. (1988). Identification of long-chain isoprenoid alkylbenzenes in sediments and crude oils. Geochimica Et Cosmochimica Acta, 52, 2671–2677. https://doi.org/10.1016/0016-7037(88)90035-X
- Damsté, J. S., & Koopmans, M. P. (1997). The fate of carotenoids in sediments: An overview. Pure and Applied Chemistry, 69, 2067–2074. https://doi.org/10.1351/pac199769102067
- Didyk, B. M., Simoneit, B. R. T., Brassell, S. C., & Eglinton, G. (1978). Organic geochemical indicators of palaeoenvironmental conditions of sedimentation. Nature, 272, 216. https://doi.org/10.1038/272216a0
- Erwin, D. H. (2015). Early metazoan life: Divergence, environment and ecology. Philosophical Transactions of the Royal Society B: Biological Sciences, 370, 20150036.
- Farrimond, P., Taylor, A., & TelnÆs, N. (1998). Biomarker maturity parameters: The role of generation and thermal degradation. Organic Geochemistry, 29, 1181–1197. https://doi.org/10.1016/S0146-6380(98)00079-5
- Fike, D., & Grotzinger, J. (2008). A paired sulfate–pyrite δ34S approach to understanding the evolution of the Ediacaran-Cambrian sulfur cycle. Geochimica Et Cosmochimica Acta, 72, 2636–2648. https://doi.org/10.1016/j.gca.2008.03.021
- Fike, D., & Grotzinger, J. (2010). A δ34SSO4 approach to reconstructing biogenic pyrite burial in carbonate-evaporite basins: An example from the Ara Group, Sultanate of Oman. Geology, 38, 371–374. https://doi.org/10.1130/G30230.1
- Fike, D., Grotzinger, J., Pratt, L., & Summons, R. (2006). Oxidation of the Ediacaran Ocean. Nature, 444, 744–747. https://doi.org/10.1038/nature05345
- Forbes, G., Jansen, H., & Schreurs, J. (2010). Lexicon of Oman subsurface stratigraphy. GeoArabia, 15, 210–215.
- French, K. L., Birdwell, J. E., & Berg, M. V. (2020). Biomarker similarities between the saline lacustrine Eocene Green River and the Paleoproterozoic Barney Creek Formations. Geochimica et Cosmochimica Acta, 274, 228–245.
- French, K., Rocher, D., Zumberge, J., & Summons, R. (2015). Assessing the distribution of sedimentary C 40 carotenoids through time. Geobiology, 13, 139–151.
- French, K. L., Tosca, N. J., Cao, C., & Summons, R. E. (2012). Diagenetic and detrital origin of moretane anomalies through the Permian-Triassic boundary. Geochimica Et Cosmochimica Acta, 84, 104–125. https://doi.org/10.1016/j.gca.2012.01.004
- Frigaard, N.-U., & Bryant, D. A. (2004). Seeing green bacteria in a new light: Genomics-enabled studies of the photosynthetic apparatus in green sulfur bacteria and filamentous anoxygenic phototrophic bacteria. Archives of Microbiology, 182, 265–276. https://doi.org/10.1007/s00203-004-0718-9
- Fulton, J. M., Arthur, M. A., Thomas, B., & Freeman, K. H. (2018). Pigment carbon and nitrogen isotopic signatures in euxinic basins. Geobiology, 16, 429–445. https://doi.org/10.1111/gbi.12285
- Glaeser, J., & Overmann, J. (2003). Characterization and in situ carbon metabolism of phototrophic consortia. Applied and Environmental Microbiology, 69, 3739–3750. https://doi.org/10.1128/AEM.69.7.3739-3750.2003
- Gold, D. A., Grabenstatter, J., de Mendoza, A., Riesgo, A., Ruiz-Trillo, I., & Summons, R. E. (2016). Sterol and genomic analyses validate the sponge biomarker hypothesis. Proceedings of the National Academy of Sciences of the United States of America, 113, 2684–2689.
- Grabenstatter, J., Méhay, S., McIntyre-Wressnig, A., Giner, J.-L., Edgcomb, V. P., Beaudoin, D. J., … Summons, R. E. (2013). Identification of 24-n-propylidenecholesterol in a member of the Foraminifera. Organic Geochemistry, 63, 145–151. https://doi.org/10.1016/j.orggeochem.2013.08.010
- Graham, J. E., & Bryant, D. A. (2008). The biosynthetic pathway for synechoxanthin, an aromatic carotenoid synthesized by the euryhaline, unicellular cyanobacterium Synechococcus sp. strain PCC 7002. Journal of Bacteriology, 190, 7966–7974. https://doi.org/10.1128/JB.00985-08
- Graham, J. E., Lecomte, J. T. J., & Bryant, D. A. (2008). Synechoxanthin, an aromatic C40 xanthophyll that is a major carotenoid in the cyanobacterium Synechococcus sp. PCC 7002. Journal of Natural Products, 71, 1647–1650.
- Grantham, P., Lijmbach, G., Posthuma, J., Clarke, M. H., & Willink, R. (1988). Origin of crude oils in Oman. Journal of Petroleum Geology, 11, 61–80. https://doi.org/10.1111/j.1747-5457.1988.tb00801.x
- Grantham, P. J., Lijmbach, J., Posthuma, J., Hughes Clarke, M. W., & Willink, R. J. (1988). Origin of crude oils in Oman. Journal of Petroleum Geology, 11, 61–88. https://doi.org/10.1111/j.1747-5457.1988.tb00801.x
- Grice, K., Schouten, S., Peters, K. E., & Damsté, J. S. S. (1998). Molecular isotopic characterisation of hydrocarbon biomarkers in Palaeocene-Eocene evaporitic, lacustrine source rocks from the Jianghan Basin, China. Organic Geochemistry, 29, 1745–1764. https://doi.org/10.1016/S0146-6380(98)00075-8
- Grosjean, E., Love, G., Stalvies, C., Fike, D., & Summons, R. (2009). Origin of petroleum in the Neoproterozoic-Cambrian South Oman salt basin. Organic Geochemistry, 40, 87–110. https://doi.org/10.1016/j.orggeochem.2008.09.011
- Grotzinger, J., & Al-Rawahi, Z. (2014). Depositional facies and platform architecture of microbialite-dominated carbonate reservoirs, Ediacaran-Cambrian Ara Group, Sultante of Om. AAPG Bulletin, 98, 1453–1494. https://doi.org/10.1306/02271412063
- Grotzinger, J., Al-Siyabi, A., Al-Hashimi, R., & Cozzi, A. (2002). New model for tectonic evolution of Neoproterozoic-Cambrian Huqf Supergroup basins, Oman. Geoarabia, 7, 241.
- Gurnis, M. (1988). Large-scale mantle convection and the aggregation and dispersal of supercontinents. Nature, 332, 695. https://doi.org/10.1038/332695a0
- Gurnis, M. (1992). Rapid continental subsidence following the initiation and evolution of subduction. Science, 255, 1556–1558. https://doi.org/10.1126/science.255.5051.1556
- Hallmann, C., Nettersheim, B. J., Brocks, J. J., Schwelm, A., Hope, J. M., Not, F., … Stuhr, M. (2019). Reply to: Sources of C30 steroid biomarkers in Neoproterozoic-Cambrian rocks and oils. Nature Ecology & Evolution, 4, 37–39. https://doi.org/10.1038/s41559-019-1049-1
- Hartgers, W. A., Damsté, J. S. S., Koopmans, M. P., & de Leeuw, J. W. (1993). Sedimentary evidence for a diaromatic carotenoid with an unprecedented aromatic substitution pattern. Journal of the Chemical Society, Chemical Communications, , 1715–1716. https://doi.org/10.1039/C39930001715
10.1039/C39930001715 Google Scholar
- Harvey, H. R., & Mcmanus, G. B. (1991). Marine ciliates as a widespread source of tetrahymanol and hopan-3β-ol in sediments. Geochimica Et Cosmochimica Acta, 55, 3387–3390. https://doi.org/10.1016/0016-7037(91)90496-R
- Kapellos, C., Knox, G. J., Borgomano, J. R. F., & Mohammed, A. R. (1992). Stratigraphical review of the Huqf Supergroup. Petroleum Development Oman Exploration Report, 308, 13.
- Koopmans, M. P., De Leeuw, J. W., & Damsté, J. S. S. (1997). Novel cyclised and aromatised diagenetic products of β-carotene in the Green River Shale. Organic Geochemistry, 26, 451–466. https://doi.org/10.1016/S0146-6380(97)00025-9
- Koopmans, M. P., Köster, J., Van Kaam-Peters, H. M., Kenig, F., Schouten, S., Hartgers, W. A., … Damsté, J. S. S. (1996). Diagenetic and catagenetic products of isorenieratene: Molecular indicators for photic zone anoxia. Geochimica Et Cosmochimica Acta, 60, 4467–4496. https://doi.org/10.1016/S0016-7037(96)00238-4
- Kuypers, M. M., Pancost, R. D., Nijenhuis, I. A., & Sinninghe Damsté, J. S. (2002). Enhanced productivity led to increased organic carbon burial in the euxinic North Atlantic basin during the late Cenomanian oceanic anoxic event. Paleoceanography, 17, 3-1–3-13. https://doi.org/10.1029/2000PA000569
- Kuypers, M. M., van Breugel, Y., Schouten, S., Erba, E., & Damsté, J. S. S. (2004). N2-fixing cyanobacteria supplied nutrient N for Cretaceous oceanic anoxic events. Geology, 32, 853–856. https://doi.org/10.1130/G20458.1
- Leavitt, W. D., Halevy, I., Bradley, A. S., & Johnston, D. T. (2013). Influence of sulfate reduction rates on the Phanerozoic sulfur isotope record. Proceedings of the National Academy of Sciences of the United States of America, 110, 11244–11249. https://doi.org/10.1073/pnas.1218874110
- Liaaen-Jensen, S. (1978). Chemistry of carotenoid pigments. In: R. K. Clayton, & W. R. Sistrom (Eds.), The photosynthetic bacteria. New York, NY: Plenum Press, pp. 233–247.
- Liaaen-Jensen, S., & Andrewes, A. (1972). Microbial carotenoids. Annual Reviews in Microbiology, 26, 225–248. https://doi.org/10.1146/annurev.mi.26.100172.001301
- Love, G. D., Grosjean, E., Stalvies, C., Fike, D. A., Grotzinger, J. P., Bradley, A. S., … Summons, R. E. (2009). Fossil steroids record the appearance of Demospongiae during the Cryogenian period. Nature, 457, 718. https://doi.org/10.1038/nature07673
- Love, G. D., Zumberge, J. A., Cárdenas, P., Sperling, E. A., Rohrssen, M., Grosjean, E., … Summons, R. E. (2019). Sources of C30 steroid biomarkers in Neoproterozoic-Cambrian rocks and oils. Nature Ecology & Evolution, 4, 34–36. https://doi.org/10.1038/s41559-019-1048-2
- Maresca, J., Graham, J., & Bryant, D. (2008). The biochemical basis for structural diversity in the carotenoids of chlorophototrophic bacteria. Photosynthesis Research, 97, 121–140. https://doi.org/10.1007/s11120-008-9312-3
- Maresca, J. A., Romberger, S. P., & Bryant, D. A. (2008). Isorenieratene biosynthesis in green sulfur bacteria requires the cooperative actions of two carotenoid cyclases. Journal of Bacteriology, 190, 6384–6391. https://doi.org/10.1128/JB.00758-08
- Megonigal, J. P., Hines, M. E., & Visscher, P. T. (2004). Anaerobic metabolism: Linkages to trace gases and aerobic processes. In W. H. Schlesinger (Ed.), Biogeochemistry (pp. 317-424). Oxford: Elsevier-Pergamon.
- Meyer, K., Macalady, J., Fulton, J., Kump, L., Schaperdoth, I., & Freeman, K. (2011). Carotenoid biomarkers as an imperfect reflection of the anoxygenic phototrophic community in meromictic Fayetteville Green Lake. Geobiology, 9, 321–329. https://doi.org/10.1111/j.1472-4669.2011.00285.x
- Mills, B., Lenton, T. M., & Watson, A. J. (2014). Proterozoic oxygen rise linked to shifting balance between seafloor and terrestrial weathering. Proceedings of the National Academy of Sciences of the United States of America, 111, 9073–9078.
- Moldowan, J. M., Fago, F. J., Lee, C. Y., Jacobson, S. R., Watt, D. S., Slougui, N.-E., … Young, D. C. (1990). Sedimentary 12-n-propylcholestanes, molecular fossils diagnostic of marine algae. Science, 247, 309–312. https://doi.org/10.1126/science.247.4940.309
- Moldowan, J. M., Seifert, W. K., Arnold, E., & Clardy, J. (1984). Structure proof and significance of stereoisomeric 28, 30-bisnorhopanes in petroleum and petroleum source rocks. Geochimica Et Cosmochimica Acta, 48, 1651–1661. https://doi.org/10.1016/0016-7037(84)90334-X
- Moldowan, J. M., Seifert, W. K., & Gallegos, E. J. (1985). Relationship between petroleum composition and depositional environment of petroleum source rocks. AAPG Bulletin, 69, 1255–1268.
- Moldowan, J. M., Sundararaman, P., & Schoell, M. (1986). Sensitivity of biomarker properties to depositional environment and/or source input in the Lower Toarcian of SW-Germany. Organic Geochemistry, 10, 915–926. https://doi.org/10.1016/S0146-6380(86)80029-8
- Montero, O., Porta, J. M., Porta, J., Martínez, G., & Lubián, L. M. (2011). Characterization of two Synechococcus sp. PCC7002-related cyanobacterial strains in relation to 16S rDNA, crtR gene, lipids and pigments. Phycological Research, 59, 147–155. https://doi.org/10.1111/j.1440-1835.2011.00613.x
- Nettersheim, B. J., Brocks, J. J., Schwelm, A., Hope, J. M., Not, F., Lomas, M., … Hallmann, C. (2019). Putative sponge biomarkers in unicellular Rhizaria question an early rise of animals. Nature Ecology & Evolution, 3, 577–581. https://doi.org/10.1038/s41559-019-0806-5
- Overmann, J. (2008). Ecology of phototrophic sulfur bacteria. R. Hell, C. Dahl, D. Knaff & T Leustek. Sulfur metabolism in phototrophic organisms (pp. 375–396). Dordrecht: Springer.
10.1007/978-1-4020-6863-8_19 Google Scholar
- Overmann, J., Cypionka, H., & Pfennig, N. (1992). An extremely low-light-adapted phototrophic sulfur bacterium from the Black Sea. Limnology and Oceanography, 37, 150–155. https://doi.org/10.4319/lo.1992.37.1.0150
- Pehr, K., Love, G. D., Kuznetsov, A., Podkovyrov, V., Junium, C. K., Shumlyanskyy, L., … Bekker, A. (2018). Ediacara biota flourished in oligotrophic and bacterially dominated marine environments across Baltica. Nature Communications, 9, 1807. https://doi.org/10.1038/s41467-018-04195-8
- Peters, K. E., Clark, M., Gupta, U. D., McCaffrey, M., & Lee, C. (1995). Recognition of an infracambrian source rock based on biomarkers in the Baghewala-1 oil, India. AAPG Bulletin, 79, 1481–1493.
- Peters, K. E., Kontorovich, A. E., Huizinga, B. J., Moldowan, J. M., & Lee, C. Y. (1994). Multiple oil families in the West Siberian Basin. AAPG Bulletin, 78, 893–909.
- Peters, K. E., & Moldowan, J. M. (1991). Effects of source, thermal maturity, and biodegradation on the distribution and isomerization of homohopanes in petroleum. Organic Geochemistry, 17, 47–61. https://doi.org/10.1016/0146-6380(91)90039-M
- Peters, K. E., Walters, C. C., Moldowan, J. M., & (2005). The biomarker guide, Cambridge, UK: . Cambridge University Press.
- Repeta, D. J. (1993). A high resolution historical record of Holocene anoxygenic primary production in the Black Sea. Geochimica Et Cosmochimica Acta, 57, 4337–4342. https://doi.org/10.1016/0016-7037(93)90334-S
- Schaeffer, P., Adam, P., Wehrung, P., & Albrecht, P. (1997). Novel aromatic carotenoid derivatives from sulfur photosynthetic bacteria in sediments. Tetrahedron Letters, 38, 8413–8416. https://doi.org/10.1016/S0040-4039(97)10235-0
- Schaefle, J., Ludwig, B., Albrecht, P., & Ourisson, G. (1977). Hydrocarbures aromatiques d'origine geologique. II: Nouveaux Carotanoïdes Aromatiques Fossiles. Tetrahedron Letters, 18, 3673–3676. https://doi.org/10.1016/S0040-4039(01)83324-4
10.1016/S0040-4039(01)83324-4 Google Scholar
- Schiefelbein, C. F., Zumberge, J., Cameron, N., & Brown, S. (1999). Petroleum systems in the South Atlantic margins. Geological Society, London, Special Publications, 153, 169–179. https://doi.org/10.1144/GSL.SP.1999.153.01.11
- Schoell, M., Hwang, R., Carlson, R., & Welton, J. (1994). Carbon isotopic composition of individual biomarkers in gilsonites (Utah). Organic Geochemistry, 21, 673–683. https://doi.org/10.1016/0146-6380(94)90012-4
- Schoell, M., McCaffrey, M., Fago, F., & Moldowan, J. (1992). Carbon isotopic compositions of 28, 30-bisnorhopanes and other biological markers in a Monterey crude oil. Geochimica Et Cosmochimica Acta, 56, 1391–1399. https://doi.org/10.1016/0016-7037(92)90070-Y
- Schroder, S., & Grotzinger, J. (2007). Evidence for anoxia at the Ediacaran-Cambrian boundary: The record of redox-sensitive trace elements and rare earth elements in Oman. Journal of the Geological Society, 164, 175–187. https://doi.org/10.1144/0016-76492005-022
- Schröder, S., Schreiber, B. C., Amthor, J. E., & Matter, A. (2003). A depositional model for the terminal Neoproterozoic-Early Cambrian Ara Group evaporites in south Oman. Sedimentology, 50, 879–898. https://doi.org/10.1046/j.1365-3091.2003.00587.x
- Schwark, L., & Empt, P. (2006). Sterane biomarkers as indicators of palaeozoic algal evolution and extinction events. Palaeogeography, Palaeoclimatology, Palaeoecology, 240, 225–236. https://doi.org/10.1016/j.palaeo.2006.03.050
- Schwark, L., & Püttmann, W. (1990). Aromatic hydrocarbon composition of the Permian Kupferschiefer in the Lower Rhine basin, NW Germany. Organic Geochemistry, 16, 749–761. https://doi.org/10.1016/0146-6380(90)90114-F
- Seifert, W. K., & Moldowan, J. M. (1980). The effect of thermal stress on source-rock quality as measured by hopane stereochemistry. Physics and Chemistry of the Earth, 12, 229–237. https://doi.org/10.1016/0079-1946(79)90107-1
- Seifert, W., & Moldowan, J. M. (1986). Use of biological markers in petroleum exploration. Methods in Geochemistry and Geophysics, 24, 261–290.
- Sim, M. S., Bosak, T., & Ono, S. (2011). Large sulfur isotope fractionation does not require disproportionation. Science, 333, 74. https://doi.org/10.1126/science.1205103
- Sinninghe Damsté, J. S., Kenig, F., Koopmans, M. P., Koster, J., Schouten, S., Hayes, J. M., & de Leeuw, J. W. (1995). Evidence for gammacerane as an indicator of water column stratification. Geochimica et Cosmochimica Acta, 59(9), 1895–1900.
- Stolper, D., Love, G., Bates, S., Lyons, T., Young, E., Sessions, A., & Grotzinger, J. (2017). Paleoecology and paleoceanography of the Athel silicilyte, Ediacaran-Cambrian boundary, Sultanate of Oman. Geobiology, 15, 401–426. https://doi.org/10.1111/gbi.12236
- Summons, R. E., Jahnke, L. L., Hope, J. M., & Logan, G. A. (1999). 2-Methylhopanoids as biomarkers for cyanobacterial oxygenic photosynthesis. Nature, 400, 554. https://doi.org/10.1038/23005
- Summons, R. E., Jahnke, L. L., & Roksandic, Z. (1994). Carbon isotopic fractionation in lipids from methanotrophic bacteria: Relevance for interpretation of the geochemical record of biomarkers. Geochimica Et Cosmochimica Acta, 58, 2853–2863. https://doi.org/10.1016/0016-7037(94)90119-8
- Summons, R., & Powell, T. (1987). Identification of aryl isoprenoids in source rocks and crude oils: Biological markers for the green sulphur bacteria. Geochimica Et Cosmochimica Acta, 51, 557–566. https://doi.org/10.1016/0016-7037(87)90069-X
- Terken, J. M., Frewin, N., & Indrelid, S. (2001). Petroleum systems of Oman: Charge timing and risks. AAPG Bulletin, 85, 1817–1845.
- van Gemerden, H., & Mas, J. (1995). Ecology of phototrophic sulfur bacteria. R. Blankenship M. Madigan & C. Bauer Anoxygenic photosynthetic bacteria (pp. 49–85). Dordrecht, Netherlands: Springer.
10.1007/0-306-47954-0_4 Google Scholar
- van Kaam-Peters, H. M., Köster, J., van der Gaast, S. J., Dekker, M., de Leeuw, J. W., & Damsté, J. S. S. (1998). The effect of clay minerals on diasterane/sterane ratios. Geochimica Et Cosmochimica Acta, 62, 2923–2929. https://doi.org/10.1016/S0016-7037(98)00191-4
- Whiteside, J. H., & Grice, K. (2016). Biomarker records associated with mass extinction events. Annual Review of Earth and Planetary Sciences, 44, 581–612. https://doi.org/10.1146/annurev-earth-060115-012501
- Wille, M., Nägler, T. F., Lehmann, B., Schröder, S., & Kramers, J. D. (2008). Hydrogen sulphide release to surface waters at the Precambrian/Cambrian boundary. Nature, 453, 767. https://doi.org/10.1038/nature07072
- Zhang, C., Zhang, Y., & Cai, C. (2011). Aromatic isoprenoids from the 25–65 Ma saline lacustrine formations in the western Qaidam Basin, NW China. Organic Geochemistry, 42, 851–855. https://doi.org/10.1016/j.orggeochem.2011.04.010
- Zumberge, J. A., Love, G. D., Cárdenas, P., Sperling, E. A., Gunasekera, S., Rohrssen, M., … Summons, R. E. (2018). Demosponge steroid biomarker 26-methylstigmastane provides evidence for Neoproterozoic animals. Nature Ecology & Evolution, 2, 1709. https://doi.org/10.1038/s41559-018-0676-2