O konieczności wykonania głębszych wierceń w części apikalnej mrzygłodzkiego batolitu

Abstract

ON THE NECESSITY OF DEEPER DRILLING IN THE APICAL PART OF THE MRZYGŁÓD BATHOLITHIn·the present paper an outline of the historical development, the course and the activity of metamorphic processes connected with the magmatic processes of the eugeosynclines are given. A particular attention is paid to the prominent importance of both mineralization and metallizing processes occurring in the apical mantle of batholiths, and properly revealing in both the gravimetric and the magnetic characters of the batholiths. The importance of the erosional processes influencing the apical parts of the batholiths are discussed and the effects produced by these processes, as concerns geophysical character of the eroded batholiths are stressed, too. On the basis of geophysical and drilling researches carried out till now between Częstochowa and Cracow, the author indicates that in this area may exist granitoid batholiths having non-eroded apical mantle, in which effects of pneumatolitic metallizing process might be preserved on the whole. A characteristic succession - lamprophyres-diabases - ore veins -being observed practically in all the ore-bearing areas adjacent to the batholiths is stressed there. This succession has been determined also in the area ·of study probably as an effect of presence of a batholith hidden in the substratum and revealed as· a negative gravimetric anomaly. Moreover, an interrelation existing between orokinetically folded Palaeozoic substratum of the area investigated and magmatic phenomena established here was presented, too. Finally, the author urges a necessity of a regional study on the Hercynian internides in the entire area stretching between Oleśno and Cracow, as well as a need to investigate the effects of mineralization appearing in the folded substratum and in the sediments of platform cover - a mineralization being here a natural consequence of formation of the Hercynian orogeny.