Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: geomin@franko.lviv.ua
Î.². Matkovskij, M.M. Pavlun’
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: geomin@franko.lviv.ua
PROFESOR E.M. LAZ’KO – IDEOLOGIST AND FOUNDER OF LVIV SCIENTIFIC SCHOOL APPLIED OF TERMOBAROGEOCHEMISTRY
POST-MAGMATIC ORE STRUCTURES
Yu.V. Lyakhov, M.M. Pavlun’
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: geomin@franko.lviv.ua
SCIENTIFIC PAYMENT OF PROFESOR E.M. LAZ’KO
IN GEOLOGY OF EARLY PRECAMBRIAN
V.P. Kyrylyuk, A.O. Sivoronov
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: zaggeol@franko.lviv.ua
Main, determinative for his time ideas and results of Prof. E. M. Laz’ko’s investigations are presented. Among the main courses that created and determined peculiarities created by him scientific school of the Precambrian geology and geological and formation investigation in Lviv University are considered such as specifity of the Earth crust early stages, reason of its inconvertible development (on the base of the comparison Archean and Proterozoic and then more detailed units), using of the paragenetic method of the geologic formation investigations concerning Precambrian complexes and wide implementation this method in geological practice namely during geological survey works on the Ukrainian shield. Based on the materials this shield under prof. E. M. Laz’ko scientific supervision were created for the first time in world practice regional map of the geological formations of the platform basement in the scale 1:1000000 and 1:500000. Main directions of the metalogenic investigations of the Early Precambrian that carried out by E. M. Laz’ko and they connection with geological formation researches of the shields are considered.
Key words: Lover Precambrian, Early Precambrian, Archean, Proterozoic, geological formations, metalpgeny.
I.S. Paran’ko, A.O. Sivoronov
Technological University of Kryvyj Rih
XXII-nd party congress Str. 11, UA–5027 Kryvyj Rih
E-mail: paranko@alba.dp.ua
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA–79005 Lviv
E-mail: zaggeol@franko.lviv.ua
The contribution of E.M. Lazko scientific members in the development of Ukra-nian shield’s formational geology, stratigraphy, magmatic geology and tectonics is considered. These investigations landmarked in establishment of the early Earth geological evolution integral model.
Key words: Ukranian shield, formations, formational groups, structural-formational complexes, geological prognosis, evolution, metallogenie feature, volcano-plutonic assosiations, Early Precambrian, correlation, green-stone complexes.
MAIN RESULTS OF MORPHOPARAGENETIC GEOLOGICAL-
FORMATIONAL RESEARCHES OF LOWER PRECAMBRIAN
V.P. Kyrylyuk
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: kirvic@lviv.gu.net
This research examines different methodical approaches to the geological-formational separations of Precambrian metamorphic complexes, particularly, in the so-called paragenetic aspect. It demonstrates that different results of separations and the volumes of the extracted formations depend on the use of features of paragenetic links of metamorphic layers, that differ by layer and informativness. It gives a level system of paragenetic features of metamorphic complexes and a general classification of geological formations. It provides an allotment of methodical approach of study from the school of Professor. E. M. Laz?ko, regarding the paragenetic approach to the study of Lower Precambrian, self –titled „Morphoparagenetic geological-formational research”.
Based on the morphoparagenetic research of geological formations of Ukrainian and other shields, it shows the formational difference of gradually formed heterofacial, stratometamorphic complexes of shields and impossibility of their comparison by gen-eralizing to a common pre-metamorphic equivalent, and also comparison with known formational layers of neogey. This demonstrates an irreversible evolutionary develop-ment of the Earth’s crust in the early stages of its development. The research proposes regarding heterofacial stratometamorphic complexes as tectonic-stratoghraphic units for geotectonic periodization of early Precambrian, and, based on this, separate to megachons – Eogey and Protogey, and dividing each into early and late geochrons.
Key words: metamorphic complex, geological-formational researches, paragenezis of rocks, geological formation, early Precambrian, geotectonic periodization, Ukrainian Shield.
SOME PROBLEMS OF DISMEMBERING GRANITOID ASSOCIATIONS AND SYSTEMATISATION OF GRANITOID UNITES
(on the example of the Ukraine shield)
K.I. Sveshnikov
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: sveshn@franko.lviv.ua
The known methods of dismembering granitoid associations for magmatic com-plexes (formations) and their systematisation are discussed. It is shown that using of structural-compositional method opens new opportunities for division of autochtho-nous and allochthonous granitoids, for their systematisation and for searching the discriminant features of different systematic units. These features allow to come to conclusion that magmatic anatexis processes and origin of acid displaced melts principally differed between themselves by major element conduct.
Key words: autochthonous and allochthonous granitoids, pseudomorphic and iso-morphic formational ranks, petrochemical discriminant features.
SOME MODERN PROBLEMS IN FORMATIONAL ANALYSIS OF THE PRECAMBRIAN
A.M. Lysak
IIvan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: zaggeol@franko. lviv. ua
The rank system of the Precambrian formational division and the system of terms for them are considered.
Key words: Precambrian, formation, formational complex, structural- formational complex, structural- formational region, paragenesis.
FORMATION TYPES OF PROTEROZOIC STRATIGENE COMPLEXES
OF THE UKRAINIAN SHIELD
I.S. Paran’ko
Technological University of Kryvyj Rih
XXII-nd party congress Str. 11,
UA–5027 Kryvyj Rih
E-mail: paranko@alba.dp.ua
The characteristic of structure–substence features of formation types of stratigene constituent of the Ukrainian Shield’s granitoid-metaterrigene, volcano-plutonic and sedimentary-volcanogene structural-formation complexes of Proterozoic is given. The formations of metavolcanogene-psammitic, metapsephite-psammitic, metacomatiitic and ferruginous-siliceous-shistose formational types that occur at the base of Protero-zoic sections of Volyn and Ingulets megabloks and Kryvyi Rih structure are recom-mended to relate to Archean tonalite-greenstone structure-formational complex.
Key words: Proterozoic, structure-formational complex, formation type, specific formation, elementary paragenesis.
G.M.Yatsenko
Ivan Franko National University of Lviv
Hrushevskij Str. 4, UA – 79005 Lviv
E-mail: geomin@franko.lviv.ua
The new fluidizate-explosive type of formations have been allocated and consid-ered on the example of kimberlite-lamproite line of the Ukrainian shield. It is con-nected with mantle and crust. Subalkaline rocks contain diamonds and the other com-ponents of noncoherental line. Terminology of these formations has been considered.
Key words: Ukrainian shield, structure, formation, line, fluidizate, diamond-bearing, terminology.
I.V. Popivn³àê
Lviv Ivan Franko National University
Hrushevsk³j Str. 4, UA – 79005 Lviv
E-mail: geomin@franko.lviv.ua
Short information about maiking of the termobarogeochemistry laboratory on Geological department of Lviv Ivan Franko National University is presented. It is noted that it was the first laboratory in Ukraine and in former USSR.