. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography :' ^ â m ⢠1 ; ' \ \ * *â â : W: â â >. i 111 i m »⢠.-â.x' > r; i :4>: . .â¦:â¢:⢠Ul ;J-* :: ::; :::: i mir,; j crj i B ;â¢;⢠\ ; < ml ^ â :â¢:«â¢:â¢:⦠m ;i!i - â .' -â â â mm i l:;i m miii \ m t- ij :â :â¦::». *:»W» â¢: "t'J':: I:*?: » t X :â :â¦:â¢:⢠» « t | ?:+:â¢:⢠>:*Â¥: '5 * I **:::: m â ; ,âUâ :i ____<». r '* i * n '.».'.»If.'*'*.'* { ⦠* * ⦠:*.Â¥,:â¦. .*:â¢:â¦. :*::*::±::*:;:* â t -y- â¢*â¢
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography :' ^ â m ⢠1 ; ' \ \ * *â â : W: â â >. i 111 i m »⢠.-â.x' > r; i :4>: . .â¦:â¢:⢠Ul ;J-* :: ::; :::: i mir,; j crj i B ;â¢;⢠\ ; < ml ^ â :â¢:«â¢:â¢:⦠m ;i!i - â .' -â â â mm i l:;i m miii \ m t- ij :â :â¦::». *:»W» â¢: "t'J':: I:*?: » t X :â :â¦:â¢:⢠» « t | ?:+:â¢:⢠>:*Â¥: '5 * I **:::: m â ; ,âUâ :i ____<». r '* i * n '.».'.»If.'*'*.'* { ⦠* * ⦠:*.Â¥,:â¦. .*:â¢:â¦. :*::*::±::*:;:* â t -y- â¢*⢠-T- â t urn 11 I:::*::*:*:::: J=>:*:::*:::*W *-'*:*:.-:: » * » I Hi i t « â â â * J » * * t t t ' ; ! ii i t i l 1 rf » t i in it ..! i 0 50 â i i 100 -IâI KM Figure 11. Diagrammatic model for development of tectonic fabric and hydrothermal activity observed on Mid-Atlantic Ridge crest at lat 26°N (Figs. 3, 4). Axis and two sides of rift valley (heavy solid vertical lines) are parallel. Arrows indicate apparent directions of sea-floor spreading at apparent half rates râ r2, and r, about rift valley. Transverse ridges (shaded) and intervening transverse valleys (open) are shown. Transverse ridges are transected by valleys perpendicular to their axes (open). Most of valleys only partly transect transverse ridges, and valleys to left of rift valley exhibit composite trends (Fig. 3). Transverse ridges are constructed of fault blocks with long axes (light vertical dashed lines) parallel to rift valley. Lengths of crust generated per unit time are bracketed between sides of the rift valley (heavy solid vertical lines) and solid vertical lines on transverse ridges to either side of the rift valley (b, c). Sites of active and relict hydrothermal mineralization (black) are shown along one of transverse ridges (c). Successive configurations of model (a, b, c) ar
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