![]() The lake has many tributaries but more than half of the runoff (highest discharge in April-May) can be attrib- uted to Zilan, Bendimahi and Engil rivers (Reimer et al. On the other hand, most of the drainage basin is constituted by volcanic rocks of Süphan vol- cano while the southern area comprises intrusive and metamorphic rocks of the Bitlis massif ( Tomonaga et al. 1996) which erupted alkaline trachyte and basalt lavas, rhyolites and phonolites. All tephra layers observed in lake cores are attributed to Nemrut volcano (Landmann et al. 4a): Nemrut volcano (2,948 m), considered still active Süphan volcano (4,158 m), inactive for several millennia the older Meydan volcano (3,290 m) and Tendurek shield volcano (3,584 m) at the NE limit of the drainage area, recently active ( Aydar et al. Four composite volcanoes are aligned north of the lake, from WSW to ENE (Fig. 1998 and references there in Utkutu 2006). Other Side of the Coin: Geochemistry of Alkaline Lakes …eruption of Nemrut volcano located about 15 km west of the Lake Van (Degens and Kurtman Wong and Degens 1978 Yilmaz et al. ![]() Its basin is delimited in the northern part by the scarp of the Cinque Denti caldera and to the south by the slopes of domes and cones (Mt Gelfiser) which are the expression of Holocene volcanic. ![]() Specchio di Venere Lake (called also Venere lake or Bagno dell'Acqua) is a small alkaline saline lake located in a closed basin on the northern side of Pan- telleria Island ( Azzaro et al. The struc- tural setting of the island is defined by both tectonic and volcano-tectonic lineaments includ- ing regional faults and fractures with the same orientation as the rift ( Boccaletti et al. Pantelleria represents the emerged part of a 836 m asl high volcanic structure, extending below sea-level to *1,200 m depth. 4d) is a Pleistocene stra- tovolcano located in the NW-SE trending con- tinental rift between North Africa and Sicily, Italy. ![]() The lake's temperature can rise to 60 ☌ (140 ☏) in summer! There are also hot springs on its eastern shore. This red tinge to the water can even be seen from space! 6. The water of Lake Natron sometimes turns red (or orange-red) because of the algae that thrives in its hypersaline environment. The lake is actually the largest breeding ground in the world for lesser flamingoes! 5. Flamingoes thrive where others perishįlamingos aren't negatively affected by the bacteria in Lake Natron that harms most other birds. This is a good environment for the growth of a kind of bacteria that damages the innards of the organisms that drink it. Lake Natron contains large salt, soda and magnesite deposits. Because the water coming into the lake leaches through the volcanic material of nearby Mt Ol Doinyo Lengai, the lake’s water is highly alkaline. The lake has no outlets, and receives most of its water from springs and episodic streams. Lake Natron receives only 400 mm of rain a year, and much of that is ‘phantom rain’ – rain that evaporates before hitting the surface. Here are some facts you'll want to share with others for the wow factor! 1.
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