Paleocene–Eocene
hyperthermal events are a current research
focus in the fields of sedimentology and paleoclimatology. The Fushun
Basin in northeast China contains continuous continental Eocene fine-grained
rocks, and a series of Eocene hyperthermal events in the Fushun Basin
have been identified. Because of the high cost of high-precision isotope
data testing, it is necessary to find new and alternative paleoclimate
parameters. In this study, Eocene coal and oil shale-bearing layers
in the Fushun Basin are used as research objects. The high-precision
data of magnetic susceptibility, color reflectance, rock composition,
and cluster analyses are used to conduct a vertical comparison in
the same category and compare that analysis with the identified Eocene
hyperthermal events in the Fushun Basin. The preliminary results show
that high-frequency-dependent susceptibility, high color reflectance
a
* (redness)/
L
* (lightness) values, and
high kaolinite content in the study area have good correspondence
with global hyperthermal events and can be used as effective parameters
for the identification of continental basin hyperthermal events. The
detailed magnetic susceptibility and color reflectance data also reveal
that the Eocene strata in the Fushun Basin recorded the Late Lutetian
Thermal Maximum (LLTM) and 13 short-term hyperthermal events during
the Early Eocene Climatic Optimum (EECO). These results indicate that
the parameters of rock physical properties can be used to study the
evolution of the paleoclimate in geological history, and it has universal
practicability in continental and marine fine-grained sedimentary
rocks.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.