Page 196 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists
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179
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TIBETAN
INDEPTH
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Tectonic
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Seismic
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VERTICAL
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6.39 FIGURE a) Cross section showing position of INDEPTH seismic reflection profile, relative to model of underthrusting Indian continental crust. b) INDEPTH profile in southern Tibet. The MHT is the Main the from to be the décollement separating the underthrusting Indian craton Himalayan Thrust, believed overriding Hi
Profiles Hinterland———=> South (Schweizerische Arbeitsgruppe the toward becomes involved in Piffner. W. Frei. P. Valased, M. permission (a). the and beneath the and (Figs. 6.18-6.20). portions 1981; 1979, 6.39). continental 6.36a). (Fig. indi- may Makovsky
Reflection rises southward basement Redrawn with 1990. 1990), al. et image to crust the beneath al., et Fig. 1993; normal partially that reflections 6.36b;
Seismic TT Switzerland It section. crystalline O. (Pfiffner difficult is of thickness structure depths (Cook al., twice melt (Fig. levels
Of Paes eastern side of the the depth. From 1327-1355, © .. boundary from Moho Appalachians (Zhao, et nearly to strong
interpretation 5km north the that reveals 10 km to about vol. 9, pp. Union, Washington, D.C. Box shows approximate position of seismic profile in the Alps 1983), 1986). great the of complex beneath reflections the Himalayas becomes enough hot reveal Plateau mid-crustal at
Tectonic : Serer limb of Aar Massif in 2.8 s on is at traverse Basin Tectonics, al., et Smythe, and crust/mantle because reveal including the and crust the become the Tibetan material
And Heivetic nappes of longer reflection Molasse the S. Smithson, (Ando (Beamish The ranges, reflectors ranges, Alps, Where may molten
Structural geome profile across northern top of basement from Appalachians Reflections mountain - resolving profiles, nonetheless, mountain 1985), the Melt rocks from profiles of
6 Foreland massif. b) Interpretation extends southward Caledonides 8.Moho collisional al., et Partial granitic ponding 1996).
Chapter Reflection a) Reflexionsseismik, 1988). The it Stauble, L. Levato, L. DuBois, S. Schmid, and Geophysical northern British collisional oblems of pr Seismic of Nelson 9. thickness, Reflection the cate al., et
178 <== North O -pe ™ N 6.38 center of the thrusting when of the American
a (s) euny Jaaesy ABA-OML 9 FIGURE fiir