Tectonic stacking

Somewhat similar to a continent-sized zipper, a huge rift opened from Kansas to Michigan s upper peninsula around 1,150 million years ago. Its tectonic activity shut down before tearing the continent in half, but left a trough 93 mi (150 km) wide filled with up to 10 mi (15 km) of stacked basalt lava flows and stream sediments. The rift is exposed today in the Keewenaw peninsula in upper Michigan. It once contained giant boulders of pure copper, some weighing several tons. 

This stacking was diachronous across the era-ton. Deformation was oldest in the western part of the craton (Midlands belt c. 2675 Ma, Horst-wood 1998) intermediate in the north-central part (Harare belt c. 2645 Ma, Wilson et al. 1995 Jelsma et al. 1996 Nesbitt et al. 2000) and youngest in the northeastern part (Dindi-Makaha belts c. 2605Ma, Vinyu et al. 2001 Hofmann et al. 2002). This deformation appears to have culmi nated in an oblique, east-west-directed orogenic event (Fig. 5 Zambezi belt Vinyu et al. 2001). This could be interpreted as the progressive lateral accretion of tectonic domains between 2.68 and 2.60 Ga (Fig. 7). 

Jelsma, H. A. Dirks, P. H. G. M. 2000. Tectonic evolution of a greenstone sequence in northern Zimbabwe sequential early stacking and pluton diapirism. Tectonics, 19, 135-152. 

Fig. 5. Calix[4]arene-based tectons 7 and 8 for the generation of doubly and quadruply stacked H-bonded macrocycles...

Fig. 6. Dendron-substituted tecton 9 for the generation of a doubly stacked H-bonded macrocycle and proposed mode of H-bonding...

Roesky, H.W. Andruh. M. The interplay of coordinative, hydrogen bonding and n-n stacking interactions in sustaining supramolecular solid-state architectures. A study case of bis(4-pyridyl)-and bis(4-pyridyl-N-oxide) tectons. Coord. Chem. Rev. 2003. 236. 91. and references therein. 

With metals, tetracyanoethylene can work as a poly-dentate hgand via several different bonding modes. In addition, with a number of organic 7i systems, it sustains n-n stacking interactions as a result of a combination of electrostatic and charge-transfer interactions. In this last context, it was considered a tecton prone to give, in the... 

Phenylene-bis(trifluoroacetato)dimercury, l,2-C6H4(HgOOCCF3)2, forms chains of stacked molecular tectons associated by Hg- -O bonds (2.844 and 2.878 A) further interconnected by Hg- - -O 3.057 A [97]. 

A reel steadily puUs and simulates the steady plate tectonic motions far from the plate boundaries, wooden blocks having different thickness simulates different shear zones of the fault which are connected with a rubber band that furnishes the elastic property of the crust. Friction is simulated by sandpaper stacked on a wooden plank using pins slightly rising from the board when the blocks simulating the fault get stuck on the pin we can also discuss asperity of the fault. The use of wooden blocks and sandpaper (Fig. 17.2) instead of the rocky blocks and the porcelain surface suggested by Linton and Stein (2012) is meant to emphasize the... 

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