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Charakterystyka osuwisk powstałych na hałdach po górnictwie rud żelaza w rejonie częstochowskim

Górka Konrad, Piotrowski Andrzej

Przegląd Geologiczny

2022

Vol. 70, nr 9

682--694

For about 600 years Middle Jurassic iron ores had been mined in the Częstochowa region. This process created many forms, among which mining and processing waste dumps are the best visible in this area. After the mining process had stopped, mass movements occured in the surface of the dumps. The paper presents specificity of landslides developed in dumps in the Częstochowa region, intensity of this phenomenon and landslides activity. Mass movements are present in each dump higher than 40m and broader than 300 m. The large stand highest dump slopes are all covered by a vast landslide zones, where rotational slides and complex slides dominates. Despite the fact that exploration of iron ores had ended about 40 years ago, a large number of dump landslides are still active or periodically active. Some of these signs of activity can be seen on Differential Digital Model (DDM).

Ocena aktywności wybranych osuwisk w rejonie Jeziora Rożnowskiego w świetle badań terenu

Wódka Marcin

Przegląd Geologiczny

2020

Vol. 68, nr 1

60--68

The article compares results of field assessment of activity of selected landslides in the Rożnowskie Lake region, obtained in 2010-2014 with a differential digital models (DDM) from airborne laser scanning data of 2010, 2013 and 2018. Results of DDM analyses were similar to those from field studies. The most difficult task in the field research was to distinguish between active landslides, where the last movements took place over three years after the date of landslide registration, and periodically active landslides, the last visible movements that took place five years ago. The article underlines that not all displacements within the landslides, visible on differential terrain models, are the result of colluvium landslide movement. Sometimes they are due to anthropogenic activities. Differential digital model in the Znamirowice landslide presents terrain changes that have resulted from intensive agricultural land use.