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Fig.3.8. Location map of the cored lake sites (A), overview of the investigated lake basins (B), relative sea-level (RSL) curve for the Umba area (C). Analysis of the relative sea-level (RSL) curve for the Umba area shows that the regression rate was 1 cm/year. The insignificant transgression, correlated to the Tapes transgression, occurred during the time span of 8000-7000 yrs BP (Fig. 3.8, C). The altitude of raised coastal features (beach ridges and terraces) was measured at several localities. Four morphological profiles were constructed on the basis of this measurements (Fig. 3.6): K - Kandalaksha (67°09’,32°25’) , T - Turii Peninsula (66°35’,34°42’), Kb – Korabl' Cape (66°17’,36°34’)) and P - Pulon'ga River (66°18’,40°03’) (Fig. 3.9). The coastal features on Turii Peninsula и Korabl’ Mountain ridge as well as bottom sediment lithostratigraphy of raised coastal lakes (Pridorozhnoye Lake) will be shown at stops 9 and 10 Stop 9. Raised coastal features of Turii Peninsula and bottom sediment lithostratigraphy of Pridorozhnoye Lake. A key area for understanding of the White Sea evolution is the Umba - Turii Peninsula area (area 2, profile T in Fig. 3.6), where lithostratigraphic and geomorphological data can be compared. 40
On the Turii Peninsula profile (Fig. 3.9) it is seen that the numerous regular beach ridges up to 50 m a.s.l. were formed by the regressing sea in Holocene. When the periglacial lake existed in the White Sea depression irregular beach ridges of the upper part of profile formed (Fig. 3.9) and the varve clays deposited (sediments of facies I, interval 13.82 – 13. 53 m on Fig. 3.10). The salinization of the basin occurred ca. 11000 yrs BP, and the regression of the sea began. That time the beach ridges formed at 50 m a.s.l. (Fig. 3.9) and the sediment of the transition zone (interbedding of mud and organic material, facies II in Fig. 3.10) was deposited in the lake basin. The formation of the regular beach ridges below 50 m a.s.l. is related to the marine regression. During the Holocene regression marine sediments were deposited and they are presented in the section of the bottom sediments (facies III on Fig. 3.10). The short-term Tapes transgression caused the prominent beach ridges to form at 30 m a.s.l. There are four prominent ridges at elevation of 30 m a.s.l. corresponding to the Tapes transgression (Fig. 3.9, 3.11). At that time the dark brown to black laminated muddy gyttja (facies IV in Fig. 3.10) began to deposit in the coastal lake depressions situated on the same altitude. Holocene marine regression continued into White Sea depression after the Tapes transgression and dark brown weakly laminated lacustrine gyttja started to accumulate in the coastal lake depressions. The drill core of the Pridorozhnoye Lake (lake3 with threshold of 30 m a.s.l in Fig. 3.8) will be presented during the excursion at the Stop 9. 41 Fig. 3.9. Geomorphological cross-section of Tuii Peninsula Morphological profiles allow two shore levels to be defined: High dasin line (HBL) and (with variable definition) the Tapes transgression limit. HBL represents the highest glacial lake during the Late Weichselian.
Page 1 and 2: 33 IGC excursion No 34, August 14 -
Page 3 and 4: Abstract Partisipants will examine:
Page 5 and 6: General introduction Kola Peninsula
Page 7 and 8: ESR-age of subfossil mollusk shells
Page 9 and 10: independent low active Ponoi Glacie
Page 11 and 12: Fig. 1. Quaternary deposits of the
Page 13 and 14: EXCURSION STOPS Day 1: Arrive at Ap
Page 15 and 16: Day 2 Trip to the Lovozero Mountain
Page 17 and 18: 17 Fig. 2.3. Geomorphological map o
Page 19 and 20: 19 Fig. 2.5. U-shaped valley with S
Page 21 and 22: a b Fig. 2.7. Lateral meltwater cha
Page 23 and 24: Fig. 2.9. Kola recessive marginal b
Page 25 and 26: There are two opinions on the genes
Page 27 and 28: Fig. 2.14. Fragment of the dump mor
Page 29 and 30: Fig. 2.18. Orientation diagrams for
Page 31 and 32: een developed in a single field of
Page 33 and 34: Day 3: Trip along the Tersky Coast
Page 35 and 36: Stop 7. Quarry opening the glaciofl
Page 37 and 38: Fig. 3.5.The outcrop of the damp mo
Page 39: Fig. 3.7. Internal structure of fac
Page 43 and 44: Fig. 3.11. The prominent ridge(~30
Page 45 and 46: Day 4. Start in Varzuga village at
Page 47 and 48: and fine-grained sands, is exposed
Page 49 and 50: Fig. 4.3. Sediment and landforms in
Page 51 and 52: 51 Fig.4.6. Strel'na marine beds fr
Page 53 and 54: 53 Fig.4.8. Overview and scheme of
Page 55 and 56: possible earthquakes (6.5), obtaine
Page 57 and 58: Stop 13. Paleoseismic dislocation
Page 59 and 60: glacial formations occurred, positi
Page 61 and 62: Fig. 5.4. Geological map of the Khi
Page 63 and 64: Ice dammed lakes features are large
Page 65 and 66: Fig. 5.8. Glaciofluvial delta and m
Page 67 and 68: 67 Fig. 5.10. Cirques of Tachtarvum
Page 69 and 70: Fig. 5.14. Scenario of the glacier
Page 71 and 72: Helmens, K.F., Räsänen, M.E., Joc

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