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![Schematic geological map of northern Gorny Altai (a), after Fedak et al. (2011), simplified, and schematic geological map of the Biika volcanic edifice of the Ust’-Sema Formation in Gorny Altai (b), after Zybin (2006), simplified. 1, Quaternary sediments; 2, Devonian sediments; 3, Ordovician sediments; 4, thick flyschoid stratum of the Gorny Altai Group; 5, siltstones, sandstones, and shales of the Elanda Formation; 6–9, Ust’-Sema Formation: 6, undivided, 7, upper part (late stage of volcanism): pyroxene and plagioclase–pyroxene basalts and clastic lava rocks, 8, middle part (second phase): orthotuffites, tuffites, tuffs, and tuff breccais, 9, lower part (first phase): pyroxene and pyroxene–plagioclase basalts; 10, Barangol complex (linear gabbro, pyroxenite, and diorite bodies and stocks); 11, siltstones and siliceous-argillaceous shales of the Chemal Formation; 12–14, Manzherok Formation: 12, undivided, 13, upper part: red-colored aphyric and fine-porphyritic plagioclase basalts, 14, lower part: green–dark-colored aphyric and fine-porphyritic basalts; 15, lower Cambrian subvolcanic bodies; 16, siliceous–carbonate–volcanic facies of the Uluscherga Formation; 17, Kaspa Group uniting the Cheposh and Shashkunar Formations, siltstones, siliceous-argillaceous shales, and argillaceous limestones; 18, Neoproterozoic–early Cambrian deposits; 19, 20, volcanic edifices of the Ust’-Sema Formation: 19, Ust’-Sema, 20, Biika (study area); 21, thrusts; 22, sampling localities.]()
![Chondrite-normalized rare-earth element patterns: a, Group 1 (OIB type; Manzherok Formation); b, Group 2 (MORB type); c, Group 3 (suprasubduction type, Ust’-Sema Formation). The normalizing values are from (Sun and McDonough, 1989). Symbols of subgroups (MORB-type and Ust’-Sema basalts): light, low-Mg; dark, high-Mg.]()
![Classification diagrams and chemical variations of diopside porphyry basalts of the Ust’-Sema Formation.]()
![Composition of clinopyroxenes from diopside porphyry basalts of the Ust’-Sema Formation.]()
![The geological outline of the Elanda area (Gorny Altai). 1, 2 – Eskongo Formation: 1 – dark laminated limestones alternating with shales, 2 – stromatolithic dolomites; 3 – effusives of the Manzherok Formation; 4 – foraminifer-containing dolomites; 5, 6 – Cheposh Formation, 5 – gravelstones and sandstones, 6 – light limestones; 7 – volcanites of the Ust’-Sema Formation; 8 – boundaries of bodies between formations; 9 – boundaries of bodies within formations; 10 – faults; 11 – formation indices; es – Eskongo; mn – Manzherok; us – Ust’-Sema; sl – Salakh; 12 – foraminifer findings; 13–15 – bedding features: 13 – normal, 14 – tilted, 15 – vertical; 16 – profile line.]()
![Primitive mantle-normalized multicomponent diagrams. a, Group 1 (OIB type; Manzherok Formation); b, Group 2 (MORB type); c, Group 3 (suprasubduction type; Ust’-Sema Formation). The normalizing values, MORB and OIB, are from (Sun and McDonough, 1989). Symbols as in Fig. 7.]()
![Classification and compositional variations of ankaramites and high-Ca melt inclusions. a, TAS classification diagram for high-Mg volcanics (Le Maitre et al., 2002), bold line marks the boundary between subalkaline and alkali basalts (Le Maitre et al., 2002); b–g, variations in composition. 1–5, ankaramites: 1, Vanuatu Arc (Barsdell and Berry, 1990; Della-Pasqua and Varne, 1997), 2, Sunda Arc (Della-Pasqua and Varne, 1997), 3, Junggar (Zhang et al., 2008), 4, South Urals (Pushkarev et al., 2017), 5, Eastern Srednogorie (Marchev et al., 2009); 6, avachites, Kamchatka (average composition) (Portnyagin et al., 2005a); 7, high-Ca group of the basalts of the Ust’-Sema Formation, Gorny Altai (Gibsher et al., 1997; Safonova et al., 2011); our data); 8, 9, homogenized high-Ca melt inclusions: 8, in olivine from ankaramites, basalts, and avachites (Schiano et al., 2000; Portnyagin et al., 2005b), 9, in clinopyroxene from the basalts of the Ust’-Sema Formation (Buslov et al., 1993; Simonov et al., 2010); 10, ankaramites of Madagascar (Lacroix, 1916).]()
![Compositional variations of clinopyroxene phenocrysts from diopside porphyry basalts of the Biika volcanic edifice (Ust’-Sema Formation). a, d, BSE images of clinopyroxene phenocrysts (general view); b, e, BSE images of magnified fragments of their rims, with analysis points; c, f, contents of elements (Ca, Mg, Al, Fe, Ti, and Cr) per six oxygen atoms. Cal, calcite.]()
![Classification geochemical diagrams for basalts of the Katun’ AC. a, Nb/Y vs. SiO2 (Winchester and Floyd, 1977); b, Al2O3–FeO*+TiO2–MgO (Jensen, 1976). Tholeiitic series: TA, andesite; TD, dacite; TR, rhyolite; calc-alkaline series: B, basalt; A, andesite; D, dacite; R, rhyolite. Symbols of basalts: squares, OIB-type; Manzherok Formation (Group 1); triangles, MORB-type, Group 2; circles, Ust’–Sema Formation, Group 3 (subgroups: solid symbols, high-Mg; open symbols, low-Mg).]()
![Compositional variations (a–e) and classification (Morimoto, 1988) (f) of clinopyroxenes from ankaramites. 1–6, Ankaramites: 1, Vanuatu Arc (Barsdell and Berry, 1990; Della-Pasqua, 1997), 2, Sunda Arc (Della-Pasqua, 1997), 3, Junggar (Zhang et al., 2008), 4, South Urals (Pushkarev et al., 2017), 5, Eastern Srednogorie (Marchev et al., 2009), 6, Guerrero (Ortiz Hernández, 2000); 7, avachites, Kamchatka (Portnyagin et al., 2005a); 8, high-Ca group of diopside porphyry basalts of the Ust’-Sema Formation.]()
![A geodynamic model for the formation of basalts of the Katun’ accretionary complex, Gorny Altai. a, Late Neoproterozoic: formation of the oceanic crust of the Paleo-Asian Ocean in spreading zones (Group 2, MORB-type basalts) and its subduction beneath the Kuznetsk–Altai island arc at the margin of the Siberian continent; formation of the primitive island arc. b, Early Cambrian: formation of oceanic islands in relation to mantle plume activity (Group 1, OIB-type basalts of the Manzherok Formation) and their accretion to the primitive arc, together with the oceanic crust; formation of the normal island arc. c, Middle Cambrian: ridge subduction, formation of the Ust’-Sema Formation—intrusion of parallel dikes and the eruption of basaltic lavas. 1, Siberian continent; 2, oceanic crust (MORB); 3, upper mantle; 4, oceanic islands/seamounts; 5, accretionary complex; 6, primitive island arc; 7, normal island arc; 8, suprasubduction volcanic units.]()
![Photomicrographs of diopside porphyry basalts of the Biika volcanic edifice (Ust’-Sema Formation). a, b, Transmitted-light images of thin sections: a, clinopyroxene phenocrysts in pyroxene porphyry basalts, b, fine phenocrysts of altered plagioclase and clinopyroxene phenocrysts in pyroxene–plagioclase porphyry basalts; c–f, BSE images of rock-forming minerals: c, single Cr-spinel phenocryst with epidote, apatite, and titanite inclusions, d, epidote–chlorite pseudomorphs developed after olivine phenocrysts, e, fine phenocryst of altered plagioclase and composition of groundmass, f, phenocryst of amphibole with titanite inclusion. Minerals: Cpx, clinopyroxene, Cr-spl, Cr-spinel, Ap, apatite, Ep, epidote, Ttn, titanite, Ol, olivine, Opx, orthopyroxene, Chl, chlorite, Kfs, K-feldspar, Pl, plagioclase, Amp, amphibole, Mag, magnetite.]()
![Compositional variations of Cr-spinel from ankaramites. a, Variations in the Al2O3 and TiO2 contents depending on geodynamic setting (Kamenetsky et al., 2001); b, variations in Cr# = 100·Cr/(Cr + Al) and Mg# = 100·Mg/(Mg + Fe2+). 1–4, ankaramites: 1, Vanuatu Arc (Barsdell and Berry, 1990; Della-Pasqua, 1997), 2, Sunda Arc (Della-Pasqua, 1997), 3, Junggar (Zhang et al., 2008), 4, South Urals (Pushkarev et al., 2017); 5, avachites, Kamchatka (Portnyagin et al., 2005a); 6, high-Ca group of diopside porphyry basalts of the Ust’-Sema Formation. IAB, island arc basalts; OIB, ocean island basalts; MORB, mid-ocean ridge basalts; LIP, large igneous provinces.]()
![Geological scheme of the Cheposh zone of Gorny Altai. Compiled using materials of geological survey by G. V. Gursky, V. P. Sergeev, L. L. Zeifert, et al., (1967-1979). 1–4 – Baratal-Eskongin-Manzherok volcanosedimentary complex of the Vendian-Lower Cambrian of the Cheposh zone: 1 – dolomites, 2 – limestones, 3 – siliceous-carbonate deposits, 4 – volcanites, 5 – rifting carbonates of the Shashkunar, Cheposh, and Barangol’ Formations of the second half of the Lower Cambrian; 6 – volcanites of the Ust’-Sema Formation of the Middle Cambrian; 7 – volcanosedimentary formations of the Ulus-Chergin Formation of the Lower Precambrian; 8 – terrigenous deposits of the Gorny Altai series of the Upper Cambrian; 9 – gabbroid intrusions; 10, 11 – fault dislocations: 10 – shifts, 11 – overthrusts; 12 – volcanosedimentary deposits of the Kaim zone; 13 – Ordovician deposits (Tremadoc); 14 – Devonian deposits. The inset shows the geographical position of the Cheposh zone.]()
![Geologic map of the Katun’ – Kaspa divide (Ak-Kaya and adjacent areas). Key localities of occurrence of the Shashkunar Formation: I – Ak-Kaya, II – Cheposh, III – Ustyuba. 1 – recent fluvial deposits; 2, 3 – Middle Cambrian Ust’-Sema Formation (€2us): 2 – upper subformation: sandstones, siltstones, tuffites, tuffstones, clayey shales, marls, and tuffs, 3 – lower subformation: varicolored basalts, clastic lavas, and tuffs; 4 – Lower Cambrian Cheposh Formation (€1čp): massive, sometimes layered limestones; 5 – Lower Cambrian Shashkunar Formation (€1šš): gray-colored sandstones, conglomerates, gravelstones, tuffstones, tuffites, cherty and chert-clayey siltstones and shales, and limestones; 6–8 – Lower Cambrian Manzherok Formation (€1mn): 6, 7 – lower subformation (€1mn2): red-colored lava breccias, clastic lavas (6) and red-colored aphyric and fine-porphyric basalts (7); 8 – lower subformation (€1mn1): green-colored and gray basalts; 9 – Vendian-Lower Cambrian Eskongo Formation (V-€1eš): carbonate-chert-shaly deposits; 10 – large blocks of the Baratal (R3-Vbr) and Eskongo (V-€1eš) Formations in the Manzherok Formation (€1mn); 11 – established (a) and supposed (b) geologic boundaries; 12 – disjunctions: established (a) and below a loose cover (b); 13 – sampling localities and index numbers of samples with microfauna; 14 – bedding. Profile along the line A-B (Fig. 4, section 1.3). Designations for the profile follow Fig. 4.]()
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Journal Article
Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 March 2020
Russ. Geol. Geophys. (2020) 61 (3): 250–267.
...N. Khlif; A.V. Vishnevskiy; A.E. Izokh Abstract —The mineral composition, petrography, and petrochemistry of middle Cambrian diopside porphyry basalts of the Ust’-Sema Formation in Gorny Altai are considered in comparison with ankaramites of different geodynamic settings. The basalts of the Ust...
FIGURES
Journal Article
Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia ) Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 April 2011
Russ. Geol. Geophys. (2011) 52 (4): 421–442.
... temperatures (1175 °C), and enriched incompatible elements (LREE, Ti, Nb), whose variations suggest a mantle plume source and variable degrees of partial melting in the spinel and garnet stability fields. The low to high-Mg Middle Cambrian basalts of the Ust’-Sema Formation occur as subparallel dikes and lava...
FIGURES
Image
Schematic geological map of northern Gorny Altai ( a ), after Fedak et al. ... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Fig. 1. Schematic geological map of northern Gorny Altai ( a ), after Fedak et al. ( 2011 ), simplified, and schematic geological map of the Biika volcanic edifice of the Ust’-Sema Formation in Gorny Altai ( b ), after Zybin ( 2006 ), simplified. 1 , Quaternary sediments; 2 , Devonian sediments
Image
Chondrite-normalized rare-earth element patterns: a , Group 1 (OIB type; M... Available to Purchase
in Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia )
> Russian Geology and Geophysics
Published: 01 April 2011
Fig. 7. Chondrite-normalized rare-earth element patterns: a , Group 1 (OIB type; Manzherok Formation); b , Group 2 (MORB type); c , Group 3 (suprasubduction type, Ust’-Sema Formation). The normalizing values are from ( Sun and McDonough, 1989 ). Symbols of subgroups (MORB-type and Ust’-Sema
Image
Classification diagrams and chemical variations of diopside porphyry basalt... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Fig. 5. Classification diagrams and chemical variations of diopside porphyry basalts of the Ust’-Sema Formation.
Image
Composition of clinopyroxenes from diopside porphyry basalts of the Ust’-Se... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Fig. 4. Composition of clinopyroxenes from diopside porphyry basalts of the Ust’-Sema Formation. a–c , Compositional variations of clinopyroxene; d , classification of pyroxenes ( Morimoto, 1988 ). 1–3 , clinopyroxenes from the Biika volcanic edifice (our data): 1 , phenocryst core, 2
Image
The geological outline of the Elanda area (Gorny Altai). 1 , 2 – Eskongo... Available to Purchase
in FINDINGS OF FORAMINIFERS IN “ANCIENT” DEPOSITS OF EAST SAYAN, TUVA, AND GORNY ALTAI ( Late Precambrian?-Paleozoic )
> Russian Geology and Geophysics
Published: 01 March 1997
, 5 – gravelstones and sandstones, 6 – light limestones; 7 – volcanites of the Ust’-Sema Formation; 8 – boundaries of bodies between formations; 9 – boundaries of bodies within formations; 10 – faults; 11 – formation indices; es – Eskongo; mn – Manzherok; us – Ust’-Sema; sl – Salakh; 12
Image
Primitive mantle-normalized multicomponent diagrams. a , Group 1 (OIB type... Available to Purchase
in Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia )
> Russian Geology and Geophysics
Published: 01 April 2011
Fig. 8. Primitive mantle-normalized multicomponent diagrams. a , Group 1 (OIB type; Manzherok Formation); b , Group 2 (MORB type); c , Group 3 (suprasubduction type; Ust’-Sema Formation). The normalizing values, MORB and OIB, are from ( Sun and McDonough, 1989 ). Symbols as in Fig. 7 .
Image
Classification and compositional variations of ankaramites and high-Ca melt... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
, Kamchatka (average composition) ( Portnyagin et al., 2005a ); 7 , high-Ca group of the basalts of the Ust’-Sema Formation, Gorny Altai ( Gibsher et al., 1997 ; Safonova et al., 2011 ); our data); 8 , 9 , homogenized high-Ca melt inclusions: 8 , in olivine from ankaramites, basalts, and avachites
Image
Compositional variations of clinopyroxene phenocrysts from diopside porphyr... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Fig. 3. Compositional variations of clinopyroxene phenocrysts from diopside porphyry basalts of the Biika volcanic edifice (Ust’-Sema Formation). a , d , BSE images of clinopyroxene phenocrysts (general view); b , e , BSE images of magnified fragments of their rims, with analysis points; c
Image
Classification geochemical diagrams for basalts of the Katun’ AC. a , Nb/Y... Available to Purchase
in Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia )
> Russian Geology and Geophysics
Published: 01 April 2011
, rhyolite. Symbols of basalts: squares, OIB-type; Manzherok Formation (Group 1); triangles, MORB-type, Group 2; circles, Ust’–Sema Formation, Group 3 (subgroups: solid symbols, high-Mg; open symbols, low-Mg).
Image
Compositional variations ( a–e ) and classification ( Morimoto, 1988 ) (f) ... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Urals ( Pushkarev et al., 2017 ), 5 , Eastern Srednogorie ( Marchev et al., 2009 ), 6 , Guerrero ( Ortiz Hernández, 2000 ); 7 , avachites, Kamchatka ( Portnyagin et al., 2005a ); 8 , high-Ca group of diopside porphyry basalts of the Ust’-Sema Formation.
Image
A geodynamic model for the formation of basalts of the Katun’ accretionary ... Available to Purchase
in Geochemistry, petrogenesis and geodynamic origin of basalts from the Katun’ accretionary complex of Gorny Altai ( southwestern Siberia )
> Russian Geology and Geophysics
Published: 01 April 2011
of the normal island arc. c , Middle Cambrian: ridge subduction, formation of the Ust’-Sema Formation—intrusion of parallel dikes and the eruption of basaltic lavas. 1 , Siberian continent; 2 , oceanic crust (MORB); 3 , upper mantle; 4 , oceanic islands/seamounts; 5 , accretionary complex; 6 , primitive
Image
Photomicrographs of diopside porphyry basalts of the Biika volcanic edifice... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
Fig. 2. Photomicrographs of diopside porphyry basalts of the Biika volcanic edifice (Ust’-Sema Formation). a , b , Transmitted-light images of thin sections: a , clinopyroxene phenocrysts in pyroxene porphyry basalts, b , fine phenocrysts of altered plagioclase and clinopyroxene phenocrysts
Image
Compositional variations of Cr-spinel from ankaramites. a , Variations in ... Available to Purchase
in Ankaramites of Gorny Altai: Mineralogical, Petrographic, and Petrochemical Features of Diopside Porphyry Basalts of the Ust’-Sema Formation
> Russian Geology and Geophysics
Published: 01 March 2020
( Barsdell and Berry, 1990 ; Della-Pasqua, 1997 ), 2 , Sunda Arc ( Della-Pasqua, 1997 ), 3 , Junggar ( Zhang et al., 2008 ), 4 , South Urals ( Pushkarev et al., 2017 ); 5 , avachites, Kamchatka ( Portnyagin et al., 2005a ); 6 , high-Ca group of diopside porphyry basalts of the Ust’-Sema Formation. IAB
Image
Geological scheme of the Cheposh zone of Gorny Altai. Compiled using materi... Available to Purchase
in CAMBRIAN DIOPSIDE-BEARING BASALTS OF THE CHEPOSH ZONE IN GORNY ALTAI: A MODEL FOR FRACTIONATION OF HYBRID MAGMAS IN INTERMEDIATE MAGMATIC CHAMBERS
> Russian Geology and Geophysics
Published: 01 November 1997
– dolomites, 2 – limestones, 3 – siliceous-carbonate deposits, 4 – volcanites, 5 – rifting carbonates of the Shashkunar, Cheposh, and Barangol’ Formations of the second half of the Lower Cambrian; 6 – volcanites of the Ust’-Sema Formation of the Middle Cambrian; 7 – volcanosedimentary formations
Image
Geologic map of the Katun’ – Kaspa divide (Ak-Kaya and adjacent areas). Key... Available to Purchase
in NEW DATA ON THE MICROFAUNA AND GEOLOGIC STRUCTURE OF THE AREAS OF DEVELOPMENT OF THE LOWER CAMBRIAN SHASHKUNAR SILICEOUS-CARBONATE-TERRIGENOUS FORMATION ( Gorny Altai )
> Russian Geology and Geophysics
Published: 01 April 2000
Fig. 3. Geologic map of the Katun’ – Kaspa divide (Ak-Kaya and adjacent areas). Key localities of occurrence of the Shashkunar Formation: I – Ak-Kaya, II – Cheposh, III – Ustyuba. 1 – recent fluvial deposits; 2 , 3 – Middle Cambrian Ust’-Sema Formation (€ 2 us): 2 – upper subformation
Journal Article
CAMBRIAN DIOPSIDE-BEARING BASALTS OF THE CHEPOSH ZONE IN GORNY ALTAI: A MODEL FOR FRACTIONATION OF HYBRID MAGMAS IN INTERMEDIATE MAGMATIC CHAMBERS Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 November 1997
Russ. Geol. Geophys. (1997) 38 (11): 1789–1801.
... – dolomites, 2 – limestones, 3 – siliceous-carbonate deposits, 4 – volcanites, 5 – rifting carbonates of the Shashkunar, Cheposh, and Barangol’ Formations of the second half of the Lower Cambrian; 6 – volcanites of the Ust’-Sema Formation of the Middle Cambrian; 7 – volcanosedimentary formations...
FIGURES
Journal Article
NEW DATA ON THE MICROFAUNA AND GEOLOGIC STRUCTURE OF THE AREAS OF DEVELOPMENT OF THE LOWER CAMBRIAN SHASHKUNAR SILICEOUS-CARBONATE-TERRIGENOUS FORMATION ( Gorny Altai ) Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 April 2000
Russ. Geol. Geophys. (2000) 41 (4): 499–516.
...Fig. 3. Geologic map of the Katun’ – Kaspa divide (Ak-Kaya and adjacent areas). Key localities of occurrence of the Shashkunar Formation: I – Ak-Kaya, II – Cheposh, III – Ustyuba. 1 – recent fluvial deposits; 2 , 3 – Middle Cambrian Ust’-Sema Formation (€ 2 us): 2 – upper subformation...
FIGURES
Journal Article
FINDINGS OF FORAMINIFERS IN “ANCIENT” DEPOSITS OF EAST SAYAN, TUVA, AND GORNY ALTAI ( Late Precambrian?-Paleozoic ) Available to Purchase
Journal: Russian Geology and Geophysics
Publisher: Novosibirsk State University
Published: 01 March 1997
Russ. Geol. Geophys. (1997) 38 (3): 661–668.
..., 5 – gravelstones and sandstones, 6 – light limestones; 7 – volcanites of the Ust’-Sema Formation; 8 – boundaries of bodies between formations; 9 – boundaries of bodies within formations; 10 – faults; 11 – formation indices; es – Eskongo; mn – Manzherok; us – Ust’-Sema; sl – Salakh; 12...
FIGURES
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