Соустов, Н. И. Геолого-петрографический очерк восточных предгорий Чуна-тундры на Кольском полуострове / Н. И. Соустов ; Акад. наук СССР. – Москва : [б. и.], 1938. - 41, [1] с., [2] л. ил. : ил., карты.

tha t of constant stratification of schists with schistous amphibolites and metamandelsteins, their piercings by peridotites, etc. in the upper horizons greatly recall the tundras of Tolpvyd — Keulik (5) and kaskama-soorti (12) Guided by geological considerations, the author unites the upper horizons of the section studied with the lower horizons in the coeval formation (svionian) distinguishing them only by the degree of metamorphisation. The dominating structural singularity of this region is the large synclinal fold striking W. N. W. — E. S. E. The series of crystallin schists of the area studied form the southern wing of this regional synclinal, complicated by several smaller folds and a thrust of the ancient Archaean block upon the more recent Prot.erozoic series of Imandra—Varzuga (in the east corner of the tract). Amongst the intrusives to be found on the area studied are: granite, gab- bro, pyroxenytes, peridotites and diabases. The large massifs of feldspathic amphibolites are regarded by the auther to be of erruptive formation too. Numerous liornfelsic inclusions are to be met with in the gabbro-norites; schlieres of ultra-basic rocks are observed. Quartz and micro-pegmatite are frequently present in the mineralogical compound. These phenomena the author explains by assimilation. Both very ancient oligoclasic and post- Karelian — microclinous granites are to be met with. On Elnyune and Elya- vruaivench the latter peirce the gabbro-norites, forming erruptive breccia, th in injections and parallel veins in the gabbro-norite masse. Conglomerate like formations on Elnyune, formerly described as sedimentated (7) are li kewise regarded by the author as erruptive breccia. As a result of the in tru sion of more recent microclinal granites, both the gabbro-norites themselves and the porphyrite veins intersecting them were partly recrystallised and metamorphised. ЛИТЕРАТУРА Г р и г о р ь е в С. А. Географические работы на западном побережье оз. Имандра. Мчи. Русск. геогр. общ., 1924, 56, вып. I. К а с с и н Н. Г. Геологические исследования вдоль Мурманской ж . д. Мат. общ. и прикл. геол., 1923. вып. 43. К у п л о т с к и й А. М. Геолого-петрографичеекая характеристика Чуна-тундры на Кольском полуострове. Тр. СОІІС, сер. кольск., 1933, вып. 5. К у п л о т с к и й Б . М. Ультраосновные породы Монча-тундры. Тр. СОПС, сер. к о л ь с к ., 1935, вып. 7. П о л к а н о в А. А. Геолого-петрологический очерк сев.-зап. части Кольского полуострова, ч. I, Л .—М., Акад. Н аук, 1935. П о л к а н о в А. А. Геологический очерк Кольского полуострова. Тр. Аркт. иист., 1936, 53. Р и х т е р Г. Д. Физикогеографический очерк оз. Имандра и его бассейна. Геогр. эконом, инст. при ЛГУ, 1934, вып. 5. С у д о в и к о в Н. Г. Материалы по геологии юго-зап. части Кольского п о л у острова. Тр. Ленингр. геол. тр., 1935, вып. 10. B a s t i n Е. S. Chemical composition as a criterion in identifying metamorphosed sediments. Journ. Geol., 1909—1913. E s c o l a P. On th e petrology on the O rijarv i region in southwestern F in lan d . Bull. Comm. Geol. F in l., 1914, № 40. H a u s e n H. Liber die praq u artare Geologic des Petsamo-Gebietes am Eismeere Bull- Comm. Geol. F in l., 1926, № 76. H o l m q u i s t P. T. Tvren und Nomenklaturen der Adergesteine Geol. For. Stockh. F orh ., 1921, 43, 612. M a c G r e g o r A. G. Clouded F elspars and Thermal Metamorphism. Min Ma g , 1931, 22, № 133, 524.