Diapirism was accompanied by modest regional orthogonal shortening and extension of the hot upper crust, producing the orientations of the batholiths.
Rise of the batholiths greatly increased the petrologic fractionation of the crust and the concentration of radionuclides high in it, resulting in cooling of the deeper crust and subjacent mantle, and thus cratonization.
Three new slip rates from the Death Valley–Fish Lake Valley (DVFLV) fault contribute to an exceptionally detailed record of lateral rate variations on this 300-km-long system.
From south to north, these three new sites are: South Mud Canyon, Cucomongo Canyon, and Indian Creek.
The upper crust, containing the granite-and-greenstone aggregates, was decoupled from the gneissic middle crust, which underwent flattening and extension subparallel to the elongation of the shallow batholiths.
The offset fans date to 17.4 ± 2.3 ka at South Mud Canyon, 39 ± 3 ka at Cucomongo Canyon, and 6.3 ± 1.8 ka at Indian Creek, yielding slip rates of 2.1 0.5/−0.4 mm/yr, 6.1 1.3/−1.0 mm/yr and 2.2 0.8/−0.6 mm/yr, respectively.
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The granite-and-greenstone terrains that dominate upper crust formed from about 3.6 to about 2.6 Ga, and record magmatic and tectonic processes very different from those of a younger time.
The lithologic, structural and stratigraphic assemblages that typify Proterozoic and Phanerozoic rifted and reassembled margins also lack Archean analogues, and no evidence has been found for Archean rifting, rotation, and reassembly of continental plates.
Conversely, characteristic Archean assemblages lack modern equivalents in any tectonic setting.
The batholiths include both the products of new crustal melts and variably remobilized mid-crustal gneisses.