Publication Date:
2022-06-14
Description:
Paleoenvironmental and paleoclimate
changes that occurred during the late postevaporitic stage of the Mediterranean Basin in the Messinian foreland domain of the
Adriatic region offer a new perspective on
the relationship between orbital forcing and
climate response. The magnetic susceptibility
record of the Fonte dei Pulcini A section (Maiella Mountains, Italy) allows us to orbitally tune the record between 5.394 and 5.336 Ma and to temporally constrain the paleoenvironmental and paleoclimate changes
evidenced by quantitative paleontological
(palynomorphs, ostracods, and calcareous
nannofossils), stable isotope (δ18O and
δ13C), and X-ray diffraction (XRD) analyses.
The base of the Fonte dei Pulcini A section is characterized by Paratethyan ostracods and
dinocysts, which point to the late Messinian
Lago-Mare biofacies (Loxocorniculina
djafarovi zone) of the Mediterranean Messinian stratigraphy. From paleontological
and geochemical (δ18O) analyses, there is no
evidence of a marine incursion in the Fonte
dei Pulcini A section. The major changes in
terms of paleodepth, paleosalinity, evaporation versus precipitation, aridity versus humidity, and reworking processes occurred in the upper part of the Fonte dei Pulcini A section, during the last Messinian insolation cycle (i-cycle 511/512), which is characterized by high-amplitude oscillations. In contrast, the lower part of the Fonte dei Pulcini A section, which was deposited during relatively low-amplitude insolation cycles, is characterized by more stable environmental conditions.
Comparing summer insolation with the
paleoenvironmental changes at the Fonte dei
Pulcini A section, we identify delays of several thousands of years between orbital forcing and climate response.
Description:
Published
Description:
499-516
Description:
1.8. Osservazioni di geofisica ambientale
Description:
2.2. Laboratorio di paleomagnetismo
Description:
3.8. Geofisica per l'ambiente
Description:
JCR Journal
Description:
reserved
Keywords:
Messinian stage
;
Lago-Mare event
;
Maiella
;
Apennines
;
03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology
;
04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy
;
04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism
;
04. Solid Earth::04.05. Geomagnetism::04.05.09. Environmental magnetism
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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