[1] 1.Urey H.C.,The thermodynamic properties of isotopic substances, J.Chem.Soc.,1997, 562

2.McCtea J.M.,The isotopic chemistry of carbonates and a paleotemperature scale.1.Chem.Phys.,1950.18: 849-857

3.Emiliani C.,Pleistocene temperatures, J.Geol.,1955, 63: 538-578

4.Emiliani C.,Isotopic paleotemperatures, Science, 1966,159:841- 857

5.耿安松、文启忠,陕西洛川黄土中碳酸盐的某些地球化学特征,地球化学,1988.3:267-275

6.张虎才、张林源、张维信,兰州九州台黄土剖面碳氧同位素及黄土沉积环境研究,兰州大学学报(自然科学版), 1990, 26(3):117-126

7.文启忠等,中国黄土地球化学,北京:科学出版社,1989,115-169

8.Duchscheret Wm.Jr.,Geochemical exploration for hydrocarbons一no new trick一but an old dog.Oil and Gas Journal, 1982, 5, 163-176

9.李春园,干旱半干旱地区黄土沉积物中碳酸盐碳、氧同位素组成恃征及其环境意义,矿物岩石地球化学新探索(欧阳自远主编),北京,地震出版社,1993,288-289