The East Carpathians
have been affected by ample significant vertical movements, which created
more than 8 km subsidence in the Focsani depression (or foredeep) during
middle-late Miocene to Pliocene, followed by important uplift.
The combined effect
of subsidence and uplift exerted a major control on relative sea level
changes and disconnection of several small basins from the Paratethys Ocean.
Cristina
measuring something sedimentological in the Putna valley of the East Carpathians
Sedimentation response
to this tectonic regime coupled with climatic changes can be recognised
in outcrop sections by a general trend of stacked progradational and aggradational
sequences from shallow marine to deltaic/paralic and continental deposits,
and a superimposed cyclic pattern.
| We study
several km thick Mio- Pliocene sedimentary sequences from Putna Valley
(spanning approximately 3 Myr) to characterise paleoclimate variability
during denudation of the source area and during deposition. |
To reach
this goal, a multi-parametrical approach has been performed on hundreds
of samples: detailed petrography on sandstones, XRD clay minerals identification,
XRF, OM, calcimetry of mudstones and magnetic parameters. |
This study is complementary
to the PhD research of Iuliana Vasiliev. |
2007
-
Panaiotu, C.E., Vasiliev,
I., Panaiotu, C.G., Krijgsman, W. and Langereis, C.G. (2007). Provenance
analysis as a key to orogenic exhumation: a case study from the East Carpathians
(Romania), Terra Nova, 19, 120-126 (doi: 10.1111/j.1365-3121.2006.00726.x)
2004
-
Vasiliev, I., Krijgsman,
W., Langereis, C.G., Panaiotu, C.E., Matenco, L. and Bertotti, G. (2004).
Towards an astrochronological framework for the eastern Paratethys Mio-Pliocene
sedimentary sequences of the Focsani basin (Romania), Earth Planet.
Sci. Lett, 227, 231-247
|
