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plagioclinal
plagioclinal adj.
Brit. 
/ˌpleɪdʒɪə(ʊ)ˈklʌɪnl/
, /ˌpleɪdʒɪə(ʊ)ˈklʌɪnl/U.S. /ˌpleɪdioʊˈklaɪn(ə)l/
Geography of, relating to, or designating a rock structure, such as a ridge, lying at an oblique angle to the strike of the strata./ˌpleɪdioʊˈklaɪn(ə)l/ΘΚΠ
the world > the earth > structure of the earth > structural features > fold or dip > [adjective] > others
plagioclinal1879
isoclinal1882
downdip1904
ptygmatic1907
up-dip1916
1879 C. Callaway in Geol. Mag. 6 221 A plagioclinal axis is not necessarily Precambrian, but its transverse strike should suggest inquiry.
1903 Geogr. Jrnl. 21 628 Nearly all the exposed ridges are plagioclinal, and at Collier Hill..and elsewhere not only are the rocks seen to strike obliquely across the ridges as a whole, but even the smaller crags are plagioclinal too.
1989 Canad. Geotechn. Jrnl. 26 737/2 The mechanics of common toppling to plagioclinal slopes (slopes between 20 and 70° to the strike of the penetrative discontinuity).
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