The active thermogene travertine deposits along the Cameroon volcanic line (CVL), central africa: Petrology and insights for neotectonics and paleoenvironmental approach

Factors governing travertine deposition in fluvial systems: The Bagni San Filippo (central Italy) case study

“…Note that some data from Ngol (Cameroon) might be from non-fluvial travertine deposits because of the lacking of sampling sites. δ (Bisse et al, 2018;Tchouatcha et al, 2018). Question marks (?)…”

“…Journal Pre-proof Table 4 General characteristics of the studied fluvial travertines and possible headsprings (Chiodini et al, 2020), in comparison with those from Aksaz (Turkey) (Özkul et al, 2014), Azuaje (Spain) (Rodríguez-Berriguete et al, 2012;Rodríguez-Berriguete and Alonso-Zarza, 2019), and Ngol (Cameroon) (Bisse et al, 2018;Tchouatcha et al, 2018)…”

First evidence of sinter and travertine in Cameroon: fault reactivation and geothermal implications

“…Numerous hot springs are located along the "Cameroon Volcanic Line" (CVL) which is a megastructure with oceanic and continental volcanic fabrics from Pagalu Island to Lake Tchad displaying a "swell and basin" structure [Tchoua, 1974, Tchuimegnie Ngongang et al, 2016. Some of these hot springs have travertine deposits near or far from the water source as for the Bongongo (near Mount Cameroon) and the Ngol (near Mount Manengouba) springs [Le Maréchal, 1976, Tchoua, 1977, Bisse et al, 2018, Tchouatcha et al, 2018. The study area (Figure 1) concerns a small-sized (<0.15 Km length) sedimentary basin with thermogenic depositions.…”

“…The CVL travertines have been subject of many studies that led to their deep origin [e.g. Bisse et al, 2018, Tchouatcha et al, 2018 from hot springs, [31-49 °C, Le Maréchal, 1976]. Chemical elements such as Li, Ba, Sr and Sr in the host spring waters are commonly associated with CO 2 ranging from 500 to 1050 mg/l [Le Maréchal, 1976].…”

“…This suggests a mixture between inorganic CO 2 and soil CO 2 from plant respiration [e.g., Giustini et al, 2017]. The heavy mineral content of these deposits reveals that the deep fluids crossed varied types of rocks such as plutonic and metamorphic rocks [Tchouatcha et al, 2018]. Gastropods and leaves occurring in the travertines suggest presentday climate conditions [Tchouatcha et al, 2018].…”