Page 197 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

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Tectonic Tethyan Himalaya TIBETAN CRUST “cee HT Seem, INDEPTH underthrusting beneath southern ©

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Expression Hinterland High Himalaya = — ~ pp. vol. 366,

Seismic | | T Ree a) Cross section showing position of INDEPTH seismic reflection profile, relative to model to be the décollement separating the underthrusting Indian craton Moho. From Deep seismic reflection evidence for continental 557-559, 1993, Redrawn é

Lesser Himalaya . of underthrusting Indian continental crust. b) INDEPTH profile in southern Tibet. The MHT is the Main overriding Himalaya. Note deep reflections at about 22 s two-way travel time (TWT), interpreted to team, Nature, ;
Foreland | MBT Cl Ty Tn INDEPTH Magazines, Ltd., London.

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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).
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