Мікрокліматичні умови формування гіпсово-ангідритових куполів у кар'єрі с. Піски біля Щирця

Abstract

The results of the investigation of the influence of the microclimatic conditions on the weathering (hydration) of anhydrite and the formation of gypsum domes and caves from swelling of the anhydrite beds in the Pisky quarry are presented. The whole day synchronous measurements of temperature and humidity, with an interval of 15 minutes, were conducted in the selected points within the gypsum-anhydrite domes (inside the caves), in the vicinity of the domes, and in the variable sites of the stone pit, with the use of the automatic electronic recording devices. The values of temperature and humidity from 15 representative sites, recorded during the stable hot weather conditions, have been analysed. The average diurnal and extreme values, and the diurnal run of the temperature have been shown on the graphic drawings. The reasoning has been made about the dependence of the gypsum domes and caves formation on the conditions of availability of the water; the water from precipitation, the ground water, the water running down the slopes, and the condensation water. It has been pointed out that microclimatic conditions influence the development of gypsum domes and caves from swelling of the anhydrite beds through the condensation of water onto the anhydrite bed in the conditions of aspiration of the humid air through the caves. Key words: gypsum domes, caves from swelling of the anhydrite beds, anhydrite rocks, hydration, gypsum, microclimatic conditions, condensation of water vapor.