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▪ I. † ˈobsequent, a.1 Obs.
[ad. L. obsequent-em compliant, yielding, etc., pr. pple. of obsequī: cf. obs. F. obsequent, and see obsequy1.]
Compliant, yielding, obedient.
1520Whitinton Vulg. (1527) 38 b, Benyuolent, lyberall, obsequent. 1543Necess. Doctr. N ij b, The greate parte of the lerned men that were there, were..obsequente to the pleasure and wyll of the bysshoppes of Rome. 1601Holland Pliny Pref., The tongue in an Englishman's head is framed so flexible and obsequent, that it can pronounce naturally any other language. a1619M. Fotherby Atheom. ii. i. §6 (1622) 181 Plyant, and obsequent to his pleasure.
▪ II. obsequent, a.2 Geomorphol.|ˈɒbsɪkwənt, ɒbˈsiːkwənt|
[f. ob- + -sequent in consequent, subsequent adjs.]
Of a stream, stream valley, or drainage pattern: having a course or character opposite to that of a consequent stream, stream valley, or drainage pattern, i.e. against the direction of dip of the strata. Hence as n., an obsequent stream.
1895W. M. Davis in Geogr. Jrnl. V. 134 Its escarpment face sheds short, back-flowing streams into the longitudinal subsequent valley that has been developed along the weak underlying stratum: and, even at the risk of multiplying terms unduly, I would suggest that these streams be called obsequent, as their direction is opposed to that of the initial consequent streams. Ibid. 145 Such obsequents are represented by the Ousel and Ivel farther east. 1902H. J. Mackinder Britain & Brit. Seas 121 The Little Ouse of East Anglia is also an obsequent. 1954W. D. Thornbury Princ. Geomorphol. v. 114 Obsequent valleys drain in a direction opposite to the original consequent valleys. 1968R. W. Fairbridge Encycl. Geomorphol. 288/2 (caption) Evolution of subsequent (plus obsequent and resequent) drainage system. Ibid. 1187/1 Obsequents were originally defined as streams having a direction opposite to that of the consequent streams in their vicinity. Usually, however, the term is interpreted to mean merely a stream flowing against the direction of dip.
b. Of a fault-line scarp or a related feature: having (as a result of differential erosion) a relief the reverse of that originally produced by the faulting.
1913W. M. Davis in Bull. Geol. Soc. Amer. XXIV. 198 If it descends toward the relatively uplifted side, as must be the case when weaker rocks occur on that side, it may be called an obsequent scarp. 1954W. D. Thornbury Princ. Geomorphol. x. 260 If..the erosional topography is opposite to the original fault-produced topography, the mountain blocks would be obsequent tilt block mountains, the basins would be obsequent tilt block valleys, and the bounding scarps would be obsequent fault-line scarps. 1970R. J. Small Study of Landforms iii. 103 An ‘obsequent’ fault-line scarp faces in the opposite direction to the original fault-scarp. |