Distribution of Cambrian salts in the western Siberian craton (Yurubcheno-Tokhomo field, Russia)
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Distribution of Cambrian salts in the western Siberian craton (Yurubcheno-Tokhomo field, Russia) Dmitry Anatolievich Novikov 1,2
Received: 31 May 2016 / Accepted: 5 December 2016 / Published online: 27 December 2016 # Saudi Society for Geosciences 2016
Abstract An integrated logging and deep drilling data interpretation has provided insight to the section of the Yurubcheno-Tokhomo field. Five phases of salt deposition of 50–350 m in the cumulative thickness have been identified (top–bottom): upper Litvintsevo, Angara, upper Belsk, upper Usolye, and lower Usolye. Cumulative thickness of Cambrian salts was found to reach 550– 600 m, with predominance of 1- to 9-m salt layers. In the Cambrian, the study area was a shallow warm basin of sabkha type and favored salt evaporation. Regression periods controlled the thicknesses of salts. Keywords Salt deposition . Cambrian . Siberian craton . Geological model
Introduction During the Cambrian epoch, huge volumes of salts were deposited. Cambrian salt sequences have been found in the East-Siberian (Russia), Iran-Pakistan (Iran and Pakistan), Tarim (China), Beaufort-Mackenzie (Canada), Amadeus, and Arckaringa (Australia) (Zharkov 1974).
* Dmitry Anatolievich Novikov [email protected] 1
Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, P.O. box 630090, Akad. Koptyuga Ave 3, Novosibirsk, Russia
2
Novosibirsk State University, P.O. box 630090, Pirogov Ave 2, Novosibirsk, Russia
Particular attention has been paid to these basins, due to the large hydrocarbon resources (e.g., Wells et al. 1966; Savinsky et al. 1973; Yanshin and Zharkov 1977; Kontorovich et al. 1981, 1996; Alsarhan and Salah 1997; Chen et al. 2004; Hudec and Jackson 2007; Edgoose 2012; Cooper et al. 2013). East-Siberian, IranPakistan, and Beaufort-Mackenzie Basins show the greatest extent (Fig. 1). Salt deposits of the Siberian craton were studied by Kalinko (1959), Baskov (1961), Valyashko et al. (1965), Zharkov (1974), Kontorovich et al. (1996), and Melnikov et al. (2011). The paper focuses on the geologic framework of the Cambrian saltbearing strata in the Yurubcheno-Tokhomo play (Russia) that holds an interest for commercial production.
Geological background and phases of salt deposition in the Cambrian The study area is composed of sediments aging from the Archean to Quaternary and is located in the top of the Baikit anticline (the Kama arch) that has no Mesozoic succession. The Riphean aquifer system is a major (Filiptsov 2011) for oil and gas. The YurubchenoTokhomo field is part of the Kama petroleum region and Lena-Tunguska petroleum province (Kontorovich et al. 1981, 1996; Kharakhinov et al. 2000; Melnikov and Isaev 2004; Melnikov et al. 2008; Melnikov et al. 2011). Thick Cambrian sequences of salts are recognized in the study area. Exploratory vertical drilling has been conducted up to the depths of 2200–2500 m. The correlation of the studied sediments was conducted using
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Fig. 1 Location of Cambrian sedimentary ba
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