Akademik Veri Yönetim Sistemi
SEDIMENTARY GEOLOGY, sa.3-4, ss.101-112, 2007 (SCI-Expanded)
Halite oolites (halolites) and pisoids (halopisoids) precipitate yearly (in summer) in the brine conduits of the saltpans in the Tuz Golu saline lake (Central Anatolia, Turkey). These hatolites are well rounded and spherical, ranging between 0.7 and 2 cm in size. They are composed of coarse-grained halite crystals as the nucleus, and by concentric halite laminae with a radial fabric as the cortex. The cortex is subdivided into inner, middle, and outer zones, each zone showing different mineralogical and morphological features. These features include the presence of. organic matter particles, native sulphur globules, gypsum-anhydrite-calcite laminae, quartz-chlorite-celestite-then-nonatrite laminae, submicroscopic halite crystals, and microborings, cavities and corrosion-like structures. Our observations in the Tuz Golu saltpan environment and in the halolite fabrics suggest that (1) an intermittent supply of heavy brines from the saline lake into the saltpan conduits, which occur under agitated conditions during pumping operations, is the main genetic reason for the halolite formation: and that (2) physical, chemical and biological factors exert a significant influence on the mineralogical-textural complexity of the cortex. (c) 2006 Elsevier B.V. All rights reserved.