Hersh Gilbert

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Seismic data provide images of crust-mantle interactions during ongoing removal of the dense batholithic root beneath the southern Sierra Nevada mountains in California. The removal appears to have initiated between 10 and 3 Myr ago with a Rayleigh-Taylor-type instability, but with a pronounced asymmetric flow into a mantle downwelling (drip) beneath the(More)
reflects two anisotropic layers, both with ␾ oriented parallel to spreading. The upper layer, above a depth of about 100 km, is dominated by spreading-induced flow, which produces no splitting near the axis, where flow is predominantly vertical, but contributes to off-axis splitting as the flow diverges to a predominantly horizontal direction. The lower(More)
[1] A first‐order process in the growth of continents is the collision and accretion of terranes against continental margins. Collision leads to the formation of a suture zone between the accreted terrane and the former continental margin. New insights on the suturing process are observed from two receiver function transects across the Mesozoic Alaska Range(More)
Seismic data provide images of crust–mantle interactions during ongoing removal of the dense batholithic root beneath the southern Sierra Nevada mountains in California. The removal appears to have initiated between 10 and 3 Myr ago with a Rayleigh– Taylor-type instability, but with a pronounced asymmetric flow into a mantle downwelling (drip) beneath the(More)
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