K-Ar ages of biotite and muscovite from Pangong metamorphic complex, Shyok suture zone, India: Implications for the youngest post-collision metamorphic event in Ladakh Himalaya

The garnet-kyanite-staurolite and garnet-biotite-staurolite gneisses were collected from a locality within Lukung area that belongs to the Pangong metamorphic complex in Shyok valley, Ladakh Himalaya. The kyanite-free samples have garnet and staurolite in equilibrium, where garnets show euhedral texture and have flat compositional profile. On the other hand, the kyanite-bearing sample shows equilibrium assemblage of garnet-kyanite-staurolite along with muscovite and biotite. In this case, garnet has an inclusion rich core with a distinct grain boundary, which was later overgrown by inclusion free euhedral garnet. Garnet cores are rich in Mn and Ca, while the rims are poor in Mn and rich in Fe and Mg, suggesting two distinct generations of growth. However, the compositional profiles and textural signature of garnets suggests the same stage of P -T evolution for the formation of the inclusion free euhedral garnets in the kyanite-free gneisses and the inclusion free euhedral garnet rims in the kyanite-bearing gneiss. Muscovites from the four samples have consistent K-Ar ages, suggesting the cooling age (∼ 10 Ma) of the gneisses. These ages make a constraint on the timing of the youngest post-collision metamorphic event that may be closely related to an activation of the Karakoram fault in Pangong metamorphic complex.

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Ludwig Levy (far left) with Essen color guard marching for a regional gymnastics competition (Gau-Turnfest); Leer, Germany.

Ludwig Levy, Peter W. and Willy Beherends, behind them: Wilma Bo?hammer, Kaethe Krueger, Tomma Thomsen and E?

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Studio portrait of Lotte Schloss with her brother Helmut Schloss and their poodle Dolly; Wolfenbüttel, Germany.

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Lotte Schloss seated outdoors in a meadow; Wolfenbüttel, Germany.

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Lotte Schloss with her brother Helmut Schloss; Wolfenbüttel, Germany.

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Pedigree of the Jacob family of Stavenhagen, Mecklenburg, Germany.

Family tree and genealogy of Jacob family in Stavenhagen, Mecklenburg, 1690-1975.

Exterior view of Schoenbeck residence; Stadtoldendorf, Germany.

Photo owned by Annette Rochaix, Belmont Switz. Deposited: Archiv Cantonales, Remens, Switz. Copy by T. Krakauer

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Seated on grass Kurt Godshaw; left to right Walter, Freddy, Ursula; seated on ball Hal Godshaw

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Left: Freddy Godshaw (Gottschalk); right: Peter Zander

Gottschalk children at swim club forming a pyramid; Hannover, Germany.

Seated on grass Kurt Godshaw; left to right Walter, Freddy, Ursula; seated on ball Hal Godshaw

Kurt Godshaw (Gottschalk) as a teenager lying in a meadow; Hannover, Germany.

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Studio portrait of Walter Godshaw (Gottschalk) as a teenager; Hannover, Germany.

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Wedding portrait of Hans Krakauer and Elizabeth Godshaw (Gottschalk); Hannover, Germany. Portraits Couples

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