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1.        Berner, R.A., Biogeochemical cycles of carbon and sulfur and their effect on atmospheric oxygen over Phanerozoic time. Global and Planetary Change, 1989. 1: p. 97-122.
2.        Dean, W.E., M.A. Arthur, and G.E. Claypool, Depletion of 13C in Cretaceous marine organic matter: source, diagenetic, or environmental signal? Marine Geology, 1986. 70(1-2): p. 119-157.
3.        Hedges, J.I., W.A. Clark, and G.L. Cowie, Organic Matter Sources to the Water Column and Surficial Sediments of a Marine Bay. Limnology and Oceanography, 1988. 33(5): p. 1116-1136.
4.        Hedges, J.I., R.G. Keil, and R. Benner, What happens to terrestrial organic matter in the ocean? Organic Geochemistry, 1997. 27(5): p. 195-212.
5.        Hedges, J.I. and D.C. Mann, The lignin geochemistry of marine sediments from the southern Washington coast. Geochimica et Cosmochimica Acta, 1979. 43(11): p. 1809-1818.
6.        Hopmans, E.C., et al., A novel proxy for terrestrial organic matter in sediments based on branched and isoprenoid tetraether lipids. Earth and Planetary Science Letters, 2004. 224(1): p. 107-116.
7.        Jasper, J.P. and R.B. Gagosian, Glacial¨Cinterglacial climatically forced ¦Ä13C variations in sedimentary organic matter. Nature, 1989. 342(6245): p. 60-62.
8.        Krishnamurthy, R.V., S.K. Bhattacharya, and S. Kusumgar, Palaeoclimatic changes deduced from 13C/12C and C/N ratios of Karewa lake sediments, India. Nature, 1986. 323(6084): p. 150-152.
9.        Lamb, A.L., et al., Accessing ¦Ä13C and C/N ratios from organic material in archived cores as Holocene sea level and palaeoenvironmental indicators in the Humber Estuary, UK. Marine Geology, 2007: p. doi: 10.1016/j.margeo.2007.06.012.
10.        Muller, A. and U. Mathesius, The palaeoenvironments of coastal lagoons in the southern Baltic Sea, I. The application of sedimentary Corg/N ratios as source indicators of organic matter. Palaeogeography, Palaeoclimatology, Palaeoecology, 1999. 145(1): p. 1-16.
11.        Muller, A. and M. Voss, The palaeoenvironments of coastal lagoons in the southern Baltic Sea, II. delta13C and delta15N ratios of organic matter-sources and sediments. Palaeogeography, Palaeoclimatology, Palaeoecology, 1999. 145(1): p. 17-32.
12.        Nakai, N., Paleoenvironmental features of Lake Biwa deduced from carbon isotope compositions and organic C/N ratios of the upper 800-m sample of 1, 400 m cored column. Proceedings of the Japan Academy. Series B Physical and biological sciences, 1986. 62(8): p. 279-282.
13.        Thornton, S.F. and J. McManus, Application of organic carbon and nitrogen stable isotope and C/N ratios as source indicators of organic matter provenance in estuarine systems: Evidence from the Tay Estuary, Scotland. Estuarine, Coastal and Shelf Science, 1994. 38(3): p. 219-233.
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