مؤتمر
The karst geomorphology of the Boukadir region (Chelif – Algeria)
| العنوان: | The karst geomorphology of the Boukadir region (Chelif – Algeria) |
|---|---|
| المؤلفون: | Moulana, Meriem Lina, Hubert, Aurelia, Gunedouz, Mostefa, Ek, Camille, Colligon, Bernard |
| المصدر: | urn:isbn:978-2-7417-0694-6 Vol. IV - karstologia memoires n°24 - Geomorphology (2022-07); Congrès international de spéléologie UIS, Savoie Mont Blanc, France [FR], du 24 au 31 juillet 2022 |
| بيانات النشر: | karstologia mémoires n°24, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Bir Djeneb, Karst, Messinian Salinity Crisis, Chelif basin, Physical, chemical, mathematical & earth Sciences, Earth sciences & physical geography, Physique, chimie, mathématiques & sciences de la terre, Sciences de la terre & géographie physique |
| الوصف: | editorial reviewed In June 1988, in the region of Boukadir, northwestern Algeria, a large collapse 60 m in diameter and 35 m deep occurred in the National Road RN4. This region was not considered as strongly exposed to a geotechnical karst hazard. However, this collapse sinkhole suggests that there are large underground cavities under the Quaternary alluvium of the Boukadir plain, at an altitude near or lower than the present sea level. Geological analysis reveals that the Lithothamnium limestones outcropping on the northern Ouarsenis piedmont extend under the Quaternary alluvium. The surface karstic morphology is not spectacular because of the friable nature of this carbo nate platform, but a deep collapse sinkhole called “Bir Djeneb” or “Puits du Diable” was evidenced. The underground voids below the plain could be the result of the base level drop during the Messinian Salinity Crisis (MSC) which let an imprint on the marginal platforms of the Mediterranean Basin. |
| نوع الوثيقة: | conference paper http://purl.org/coar/resource_type/c_5794 conferenceObject editorial reviewed |
| اللغة: | English |
| URL الوصول: | https://orbi.uliege.be/handle/2268/265902 |
| حقوق: | open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
| رقم الأكسشن: | edsorb.265902 |
| قاعدة البيانات: | ORBi |
| الوصف غير متاح. |