Tectonic and Hydrothermal Activities in Debagh, Guelma Basin (Algeria)

Figure 3

Photographs of the main active site of Hammam Debagh hot springs (HD): (a) travertine accumulation on Quaternary soil; (b) clogged (filling or sealing) alluvial deposits (ancient elevated alluvial terrace); (c) well-developed cone-shaped accumulation, approximately 7 m high. Note the near vertically dipping layers and the stair-step topography that characterizes terraced mound accumulations; (d) steeply dipping to near-vertical laminae, transverse section through a fissure ridge accumulation displaying the internal structure along the fissure and the downward flow over both sides; (e) present travertine deposition (active thermal spring); (f) the more recent alluvial terrace close to Bou Hamdane river.