10 research outputs found
Life cycle of the East Carpathian orogen; Erosion history of a doubly vergent critical wedge assessed by fission track thermochronology
The relationship between the deep faults and the geothermal structures identified on the Moesian Platform territory
Two-dimensional correlation of geophysical data applied to the heat flow and earth's crust thickness patterns in Czechoslovakia
A new geodynamic model for the seismicity and in situ stresses of the Mediterranean region
Estimating apparent thermal diffusivity using temperature time series: A comparison of temperature data measured in KMA boreholes and NGMN wells
From nappe stacking to out-of-sequence postcollisional deformations: Cretaceous to Quaternary exhumation history of the SE Carpathians assessed by low-temperature thermochronology
Apatite fission track (AFT) and (U‐Th)/He (AHe)
thermochronology have been combined to constrain
the exhumation history of the SE Carpathians. Cooling
ages generally decrease from Cretaceous for the internal
basement nappes (AFT ages), to Miocene–Quaternary
(AFT and AHe, respectively) for the external sedimentary
wedge. The AFT and AHe data show a Paleogene
age cluster, which confirms a suspected but never demonstrated\ud
tectonic event. The new data furthermore suggest
that the SE Carpathians have been affected by a
middle Miocene exhumation phase related to continental
collision, which occurred at rates of ∼0.8 mm/yr, similar
to the one previously inferred for the East Carpathians.
The SE Carpathian tectonic evolution, however, is overprinted
by two younger exhumation events in the
Pliocene–Pleistocene. The first exhumation phase
(latest Miocene–early Pliocene) occurred at high exhumation
rates (∼1.7 mm/yr) and is interpreted as a tectonic
event and/or associated with a sea level drop in
the Paratethys basins during the Messinian low stand.
The youngest recorded tectonic phase suggests rapid
Pleistocene exhumation (∼1.6 mm/yr) and is interpreted
to represent crustal‐scale shortening different in
mechanics from collisional processes. The data suggest
that the SE Carpathians did not develop as a typical
double‐vergent orogenic wedge; instead, exhumation
was related to a foreland‐vergent sequence of nappe
stacking during collision and was subsequently
followed by a large out‐of‐sequence shortening event
truncating the already locked collisional boundary