The analyzed interval is the Paleocene
to Late Miocene, from 23.03
release and others that have occurred over the past several hundred million years happen over a period of about 10,000 years, although that's a relative blink in geological time.
The Clayton Formation (Earliest Paleocene
, Danian Age) is immediately above the K/T boundary.
A completely unforeseen result was the discovery of a brief but exceptional episode of high-latitude and deep-ocean warming midway through the longer-term trend, near the end of the Paleocene
at roughly 57 million years ago.
foraminifera are concentrated in the globular trochospiral group, whereas biserial forms are mostly affected in the middle Cretaceous.
Distribution: This species was originally described from the lower Eocene; lower part of the Laki succession as well as from the Khairabad Limestone (uppermost Paleocene
The volume is filled with fascinating accounts of early scientists and their discoveries, described in connection with specific cases and questions of interest to us all, including what happens when an asteroid hits the Earth, how the geologist Brian Atwater recognized the history of massive earthquakes in the Pacific Northwest, what we know about ice ages, and what brought on the catastrophic warming of the Paleocene
. Filled with recent examples of geologic events, and written in an accessible personal style, the book provides an excellent overview of one of the most relevant of all the sciences.
The results of seismic geohistory analysis carried out along three interpreted seismic sections indicate that most of the major faults in the basin originated in the Post-Maestrichtian times and mainly in the Paleocene
. The observed major faults are found to commence mainly within the Nkporo shales atOkpo-1 well site (Fig.
The Paleocene-Eocene Thermal Maximum (PETM), ~55.5 My ago, was a geologically brief (~170 ky) episode of globally elevated temperature that was superimposed on the long-term Late Paleocene
and Early Eocene warming trend (Fig.
Apart from sphaeriids, Campeloma and Lioplacodes species are particularly abundant at the Cretaceous localities, with Succinea and Aplexa not occurring at the Paleocene
We learn of their anatomy from the Paleocene
, their development as weapons of mouse destruction, their deceptive coloring, their night vision, their haunts from tundra to marshes, their food preferences, their family life, the rearing of their young, and their tenuous relationship with humans.
The 1975 sample set of 150 samples was taken from the topmost 9m of the Maastrichtian and the basal 70m of the Paleocene
. In 1979 the sample set was further extended to include the top 100m of the Upper Maastrichtian, up to just below the FAD of Abathomphalus mayaroensis.