The structure of the FMC has been recognized as a stack of metamorphic nappes developed diachronously
from Late Silurian to Early Carboniferous, which is constituted by three major tectonic units that are from the north to the south and from top to bottom ( and references therein): (i) the Upper Gneiss Unit (UGU), which is composed of migmatitic ortho- and paragneisses and contains the so-called "leptynite-amphibolite complex," formed by the bimodal association of mafic/ultramafic rocks with felsic rocks; (ii) the Lower Gneiss Unit (LGU) which consists of ortho- and paragneisses similar to those of the UGU; and (iii) the Para-Autochthonous Unit (PAU), dominated by metasedimentary units (micaschists, metagreywackes, and quartzites) that experienced low-grade metamorphism.
Owing to the age outlined for the previous lower cycle (generally related to a Sakmarian-Artinskian interval), and due to correlation with the more indicative lateral sections of the Trentino-Alto Adige, the Verrucano Lombardo probably developed diachronously
during Late Tatarian times, reaching up (or almost) to the Permian-Triassic boundary.
2005) repeatedly flooded the Maritimes Basin during eustatic highstands, with transgressions developing diachronously
in a westerly direction from the Russian Platform and through the North Variscan Basin in Germany (Dallmeyer et al 1995; Oplustil 2005).
The total length of rifted margin was more than 25,000 km, suggesting a staggered climatic response to uplift as rifting progressed diachronously
, somewhat like a zipper.
Such redescriptions go deeper into the meaning of capitalism by identifying the languages or paradigms that have been used to describe it over time as well as over space, synchronously as well as diachronously
At the end of the Cretaceous terrestrial conditions reappeared diachronously
from the late Santonian up to the Campanian.