The chemical and mineralogical composition, structure and petrophysical properties of volcanic rocks, composing three Quaternary volcanoes of Spitsbergen island - Sverrefjellet, Halvdanpiggen and Sigurdfjellet - have been studied and compared. The sharp tendency of basalts elastic properties' change in a row of volcanism "rejuvenation'' - Sigurdfjellet - Halvdanpiggen - Sverrefjellet has been obtained. The same links between petrophysical characteristics have been defined for all studied volcanoes. This paper reveals the benefits of petrophysical properties - density r, porosity P, velocity of longitudinal waves Vp, strength Rc - for the definition of lava flows within basaltic outcrops. The petrophysical peculiarities of Spitsbergen basalts have been shown in comparison with basalts from various tectonic unites of the Earth - rifts, island arcs and foldbelts.
Spitsbergen, basalts, petrophysical properties.
1. Genshaft, Reports of RAS, v. 325, 1992.
2. Harland, Arctic Geology, Memoir, 19, Pitcher ed., 1973.
3. Kalachev, J. The Bulletin of Moscow State University, Geology, v. 2, 1997.
4. Kovaleva, Geology of Svalbard, 1976.
5. Kopuylova, J. Petrology, v. 4, 1996.
6. Kurinin, Geological material of Spitsbergen, 1965.
7. Ladygin, Proceedings of the 6-th Nordic Symposium on Petrophysics, 2001.
8. Prestvic, Norsk Polarinst. Arbok, 1977.
9. Sergeev, Systematic text-book in engineering-geological study of rocks, Laboratory methods, 1984.
10. Tebenkov, Polar Research, v. 8, 1990., doi: 10.1111/j.1751-8369.1990.tb00392.x
11. Vogt, Polarforchung, v. 48, 1978.
12. Yevdokimov, Volcanoes of Spitsbergen, 2000.
