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intraformational
intraformational adj. 
/ˌɪntrəfəˈmeɪʃən(ə)l/,
Brit. /ˌɪntrəfəˈmeɪʃn̩(ə)l/
, /ˌɪntrəfəˈmeɪʃn̩(ə)l//ˌɪntrəfəˈmeɪʃən(ə)l/U.S. /ˌɪntrəfərˈmeɪʃ(ə)nəl/
Geology formed or occurring within a geological formation./ˌɪntrəfərˈmeɪʃ(ə)nəl/ΘΚΠ
the world > the earth > structure of the earth > structural features > [adjective] > intraformational
intraformational1894
1894 C. D. Walcott in Bull. Geol. Soc. Amer. V. 192 An intra-formational conglomerate is one formed within a geologic formation of material derived from and deposited within that formation.
1938 F. H. Hatch & R. H. Rastall Petrol. Sedimentary Rocks (ed. 3) iv. 76 Remarkable beds of intraformational breccia and conglomerate are found in some limestone and dolomite formations.
1940 E. S. Hills Outl. Struct. Geol. i. 15 When a slumped mass slides down on to undisturbed sediments it may later be covered by younger deposits. Severely disturbed beds will then be found between undisturbed strata, an arrangement that is known as intraformational contortion or corrugation.
1963 D. W. Humphries & E. E. Humphries tr. H. Termier & G. Termier Erosion & Sedimentation x. 194 False unconformities and intraformational unconformities can often be explained by the effect of ‘creep’.
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