Publicação
The Ponor-Plopa Cave System: Description, Sediments, and Genesis
| Resumo: | The Ponor-Plopa cave system is located in the central part of the Aninei Mountains, southwest of Steierdorf, a small neighborhood of Anina, at elevations ranging between 575 m (the Ponor) and 545 m (the Plopa resurgence) for the main river cave and ~600 m for the dry caves on the Plopa Plateau. The system includes a total of six caves of which two, Ponor and Plopa, were connected by cave diving. The remaining four caves are relatively small, inactive cavities that were connected to the system at various stages during its evolution. The karst area is entirely formed within the massive reef Plopa limestones (Barremian), and its surface does not exceed 0.5 km 2 (Figure 5.1). To the north, it is bordered by a secondary ridge of the Culmea Frumoas ă ; to the west the limit is very well marked by the rocky cliff formed along the contact between the Barremian limestones and the Hauterivian mudstones, while to the south and east it is limited by the Mini ş River. The overall topography of the karst plateau shows decreasing elevations toward the southwest, and the distribution and topography of the sinkholes suggest sinkhole alignments going from NNE to SSW, with a bend toward the east, right above the current Plopa resurgence. Such sinkhole alignments are usually considered to indicate either the broad directions of subterranean drainages or a succession of former ponors. |
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| Autores principais: | Constantin, Silviu |
| Outros Autores: | Munteanu, C.-M.; Milota, Ş.; Sarcină, L.; Gherase, M.; Rodrigo, R.; Zilhão, João |
| Ano: | 2013 |
| País: | Portugal |
| Tipo de documento: | capítulo de livro |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade de Lisboa |
| Idioma: | inglês |
| Origem: | Repositório da Universidade de Lisboa |
| Resumo: | The Ponor-Plopa cave system is located in the central part of the Aninei Mountains, southwest of Steierdorf, a small neighborhood of Anina, at elevations ranging between 575 m (the Ponor) and 545 m (the Plopa resurgence) for the main river cave and ~600 m for the dry caves on the Plopa Plateau. The system includes a total of six caves of which two, Ponor and Plopa, were connected by cave diving. The remaining four caves are relatively small, inactive cavities that were connected to the system at various stages during its evolution. The karst area is entirely formed within the massive reef Plopa limestones (Barremian), and its surface does not exceed 0.5 km 2 (Figure 5.1). To the north, it is bordered by a secondary ridge of the Culmea Frumoas ă ; to the west the limit is very well marked by the rocky cliff formed along the contact between the Barremian limestones and the Hauterivian mudstones, while to the south and east it is limited by the Mini ş River. The overall topography of the karst plateau shows decreasing elevations toward the southwest, and the distribution and topography of the sinkholes suggest sinkhole alignments going from NNE to SSW, with a bend toward the east, right above the current Plopa resurgence. Such sinkhole alignments are usually considered to indicate either the broad directions of subterranean drainages or a succession of former ponors. |
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