diachronous


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diachronous

[dī′ak·rə·nəs]
(geology)
Of a rock unit, varying in age in different areas or cutting across time planes or biostratigraphic zones. Also known as time-transgressive.
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References in periodicals archive ?
The Permo-Triassic boundary is reportedly diachronous in the Salt and Surghar Ranges.
They documented diachronous deposition across the state in a NW-migrating Acadian foreland basin fed by sediment from an actively deforming orogenic wedge to the east that covered the older Late Ordovician--Middle Silurian strata derived from more varied local sources.
The formation is diachronous and has been assigned to be of the Turonian-Maastrichtian Age.
On the one hand, there is the historical narrative of the Histories: events placed along the diachronous axis, which propel the logos as a whole.
The formation is diachronous and probably of Albian--Turonian age (Carter et al.
Ajali Sandstone is overlain by diachronous Nsukka Formation (Maastrichtian-Danian) which is also known as the Upper Coal Measure (Reyment, 1965 and Obi, 2000).
The former is diachronous in nature and demands careful analysis to determine direct historical influences.
Synchronous versus diachronous methods in the measurement of obsolescence by citation studies.
Forester describes as the "and then, and then, and then" of story, its diachronous movement.
Epi-Variscan cover in the Sudetes is not uniform - it is made up of local diachronous infills of tectonic troughs.
1997): Diachronous Variscan tectonothermal activity in the NW Iberian Massif: evidence from 40Ar/39Ar dating of regional fabric.
It means that in the areas of slower land uplift the transgression maximum occurred later than in the areas with more rapid uplift (Miettinen 2002) and that the highest Litorina level is diachronous (Hyvarinen et al.