The nature of long-term astronomical cycles preserved in the Late Triassic to Early Jurassic bedded chert sequence in the Inuyama area, Japan, covering ~30 Myr has been examined.
Five episodes of major regional change in palaeogeographic and tectonic settings are recognized: late Eocene (37 34 Ma), early late Oligocene (30 27 Ma), latest early to earliest middle Miocene (17 15 Ma), early late Miocene (9 8 Ma), and late early to early middle Pliocene (4 3 Ma) [ 92].
Biswas (1992) has noted that the Mesozoic sequence comprises Late Triassic (Rhaetic) continental, Middle to Late Jurassic marine, and Late Jurassic to Early Cretaceous fluvio-deltaic sediments.
These deposits above the Castlegate sequence boundary are interpreted as the late lowstand to early transgressive systems tracts of the low-frequency Castlegate sequence.
Three depositional sequences (DS1 to DS3) of late Burdigalian to early Serravallian age have been identified, which are separated by erosional unconformities.
The underplating-related thrust in the Late Cretaceous to early Tertiary Shimanto accretionary complex of eastern Shikoku, which imbricates basalt-mélange sequences (Figure 8), shows different aspects of veining (Ujiie et al. 2007a; Yamaguchi et al. 2012).
From the latest Pleistocene to early Holocene a hiatus, probably related to an erosive event, is recognized in the northern sequence.
We compare the observed seismic characteristics with those of other Antarctic shelf sequences and assign an Early Cretaceous age to bottom sedimentary unit ASS-1, a Late Cretaceous to Oligocene age to unit ASS-2, an Early to Mid-Miocene age to unit ASS-3, a Mid-Miocene age to unit ASS-4, a Late Miocene to Early Pliocene age to unit ASS-5, and a Pliocene to Pleistocene age to the top unit ASS-6.
One petrofacies includes much material from the higher elevated sedimentary sequences of the Transantarctic Mountains and represents overriding of the mountains and deposition of part of the Sirius Group during or after the late Oligocene to early Miocene.
AD K2 Indo-Pacific Late tenth to early thirteenth c.
the transition from late childhood to early adolescence.
