Geological Survey of Denmark and Greenland Bulletin 19 ... - Geus

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m 120 Paatuut it is succeeded by syn-volcanic lacustrine deposits referred to the Atanikerluk Formation. 110 100 Geological age. The fauna and flora are not age-diagnostic but a Danian age is indicated by the stratigraphic position between the Kangilia Formation, of Danian age on southern Nuussuaq, and the overlying Eqalulik For - mation of Danian to Selandian age (Fig. 16; Piasecki et al. 1992; Nøhr-Hansen et al. 2002. Atane Formation Kangilia Formation 90 80 70 60 50 40 30 20 10 0 Fault mud sand gravel Quikavsak Formation Tupaasat Member NQ m 210 200 190 180 170 160 150 140 130 mud sand gravel Correlation. The Quikavsak Formation deposits can be correlated to the submarine canyon deposits of the Agatdal Formation exposed on central Nuussuaq (Koch 1959; Dam & Sønderholm 1998) and occurring in the subsurface in the GRO#3 well (Fig. 67) and the GANE#1 well (Fig. 119). Subdivision. The Quikavsak Formation is divided into three members: the Tupaasat, Nuuk Qiterleq and Paatuutkløften Members (Fig. 99). Tupaasat Member new member History. Strata now referred to the Tupaasat Member were first but only briefly described by Steenstrup (1874 p. 79). The member was described in detail by Koch (1959) and referred to as the lower part of the Quikavsak Member (Upper Atanikerdluk Formation). That part of the section at Quikassaap Kuua described by Koch (1959 p. 17, fig. 5) as “cross-bedded quartz sandstone of a considerable thickness” and assigned by him to the Atane Formation, is now referred to the Quikavsak Formation (see Fig. 100). Fig. 101. Generalised sedimentological log from Ivisaannguit on the south coast of Nuussuaq (for location, see Fig. 40). The sandstones and conglomerates of the Kangilia Formation are similar to those seen at Ataa (Fig. 91). At this locality, the Kangilia Formation has a faulted contact with the Atane Formation and is erosionally truncated by the Quikavsak Formation. NQ, Nuuk Qiterleq Member. For legend, see Plate 1. the Quikavsak Formation cuts down into mudstones of the upper Maastrichtian – Lower Paleocene Kangilia For - mation (Figs 14, 15, 98, 101). West of Paatuut, the formation is overlain by marine mudstones of the Eqalulik Formation whereas east of Name. The member is named after the headland of Tupaasat just west of Ataata Kuua. Distribution. The member is exposed along the south coast of Nuussuaq as the fill of an incised valley system extending from Nuuk Qiterleq in the west to Saqqaqdalen in the east where it occurs on the western slope of Saqqaqdalen close to the Vaigat strait (Figs 40, 129; Koch 1959; Pulvertaft 1989a, b; A.K. Pedersen et al. 2007a). The Tupaasat Member is not present in all outcrops of the Quikavsak Formation. At some localities it was partly or entirely eroded away prior to deposition of the Paatuutkløften Member (see Figs 99B, 109). 118
Tupaasat Member Atane Formation Fig. 102. Giant-scale, cross-bedded conglomerates and sandstones of the Tupaasat Member (Quikavsak Formation). Encircled person for scale. From the coastal slope between Tupaasat and Nuuk Qiterleq (for location, see Fig. 2). Type section. The thickest deposits and the best exposure of the member occur between Tupaasat and Nuuk Qiterleq, in the coastal slope below the mountain Point 1580 (Figs 6, 98, 99, 102). This exposure is designated as the type section. The type section is located at 70°20.75´N, 53°08.75´W. Reference sections. There are several well-exposed sections along the south coast of Nuussuaq, e.g. in the coastal cliffs around Ivisaanguit (Dam 2002 fig. 4) and at Quikassaap Kuua (Figs 40, 100). Thickness. The member is 78 m thick in the type section, at least 80 m at Ivisaannguit, up to 7 m in Paatuutkløften, and c. 20 m at Quikassaap Kuua (Figs 40, 100). Lithology. At the type locality, the lower part of the Tupaasat Member consists of giant-scale trough cross-bedded, parallel-bedded and structureless pebbly to cobbly, very coarse-grained sandstone. In the lower part of the member, each trough set is up to 30 m in thickness (Figs 98, 99, 102, 103), but set thickness decreases upwards to less than 0.5 m at the top concomitant with a finingupward trend; the sandstones are, however, distinctly different from the cross-bedded medium- to coarsegrained sandstones of the Paatuutkløften Member (Dam 2002). Pebbles are well rounded and consist of quartz (80%), gneiss and granite (10%), metasediments (7%) and chert (3%). Within the pebbly sandstones in the type section area, an up to 10 m thick unit of mudstone rich in detrital mica is intercalated with lenses of sandstone. The mudstone is bounded at the top by an erosional unconformity giving rise to the lenticular shape of the shale. The shale is succeeded by cross-bedded pebbly sandstones. Around Ivisaannguit, the member has a similar development to that in the type section. In the eastern part of these exposures, the member is only up to 15 m thick. Towards the west, the thickness of the member increases dramatically to at least 80 m where it crosses an Early Paleocene fault scar (Dam 2002 fig. 4). 119
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GEOLOGICAL SURVEY OF DENMARK AND GR
Page 4 and 5:
Contents Abstract . . . . . . . . .
Page 7 and 8:
Preface The onshore Cretaceous-Pale
Page 9 and 10:
Introduction The Nuussuaq Basin bel
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chemistry of the Nuussuaq Basin hav
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Fig. 5. Plant fossils from the Atan
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Peak 2010 m Peak 1900 m Peak 1760 m
Page 17 and 18:
A lithostratigraphy for the marine
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to provide further funding for stud
Page 21 and 22:
DGR Geological setting As a result
Page 23 and 24:
TSS 8 Agatdal Fm Eqalulik Fm Kangil
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A Svartenhuk Halvø 50 km B Hinterl
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Nuussuaq Group new group History. T
Page 29 and 30:
ley (Figs 2, 40, 65). The section a
Page 31 and 32:
Central Nuussuaq Agatdalen South co
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3 10 4 6 5 Qorlortorssuaq Slibesten
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volcanic sediments are referred to
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Fig. 20. View from Uummannaq toward
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In the Kuuk area, the sediments ove
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m m 15 14 14 13 12 11 10 9 8 7 6 5
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Kome Formation m 40 30 20 D tial re
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Fig. 28. Reference locality of the
Page 47 and 48:
Vaigat Fm Vesterfjeld Slibestensfje
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Gilbert delta in the Ikorfat area (
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150 300 450 100 250 400 m 550 50 20
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Fig. 36. Outcrop of the Upernivik N
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Correlation. The Upernivik Næs flo
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12’ 09’ 15’ 06’ 03’ Saqqa
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m 0 GGU 247801 200 400 247815 ★
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wave-rippled sand streaked mudstone
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the formation in the marine mudston
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d d Fig. 47. Type locality of the S
Page 67 and 68: Fig. 49. Cross-bedded medium- to co
Page 69 and 70: and Qaarsut (Fig. 22). Its wider di
Page 71 and 72: Fig. 52. Two closely spaced section
Page 73 and 74: Type section. The type section of t
Page 75 and 76: Fig. 56. Delta front succession of
Page 77 and 78: Fig. 59. The Kingittoq Member at Ki
Page 79 and 80: sh L sh ch delta front Vaigat Forma
Page 81 and 82: Fig. 63. Type locality of the Itivn
Page 83 and 84: 782 Quaternary cover 54° 888 Malig
Page 85 and 86: Kuugannguaq-Qunnilik Fault and is o
Page 87 and 88: and include clasts of intraformatio
Page 89 and 90: deposited in a base-of-slope and ba
Page 91 and 92: VK 53°30’ 53°15’ Niaqornat Tu
Page 93 and 94: Umiivik-1 m Overburden ★ ★ No p
Page 95 and 96: 76). Heavily bioturbated interbedde
Page 97 and 98: Fig. 78. Type locality of the Kussi
Page 99 and 100: A B Itilli Formation Kussinerujuk M
Page 101 and 102: 160 140 120 100 Vaigat Formation Eq
Page 103 and 104: Fig. 85. Mudstones and conglomerati
Page 105 and 106: Fig. 87. Type section of the Kangil
Page 107 and 108: m 150 140 130 120 110 100 90 Kangil
Page 109 and 110: channellised, high-density currents
Page 111 and 112: Thickness. The Annertuneq Conglomer
Page 113 and 114: Fig. 96. A: Type locality of the Oy
Page 115 and 116: On Svartenhuk Halvø, on the east s
Page 117: Fig. 100. Reference locality of the
Page 121 and 122: ever, have a fluvio-lacustrine orig
Page 123 and 124: etween Tupaasat and Nuuk Qiterleq a
Page 125 and 126: Vaigat Formation sill Quikavsak For
Page 127 and 128: Fig. 112. The sharp boundary betwee
Page 129 and 130: Agatdal Formation Eqalulik Formatio
Page 131 and 132: Fig. 116. Basal conglomerate unit o
Page 133 and 134: heterolithic deposits of the Kangil
Page 135 and 136: GANE#1 Vaigat Fm Anaanaa Mb m Hyalo
Page 137 and 138: Fig. 121. Well reference section of
Page 139 and 140: Pedersen 1978). The beds are usuall
Page 141 and 142: In detail, however, the boundary be
Page 143 and 144: Fig. 126. Composite type section of
Page 145 and 146: m m 240 340 m Pingu Member 230 230
Page 147 and 148: Naujât Member Atane Formation, Kin
Page 149 and 150: The TOC [Total Organic Carbon] cont
Page 151 and 152: Fig. 133. Correlation of the member
Page 153 and 154: Fig. 135. Type locality of the Ping
Page 155 and 156: Fig. 137. Lower, sharp boundary of
Page 157 and 158: m 130 125 110 t t invasive lava low
Page 159 and 160: Fig. 141. Upper part of the Assoq M
Page 161 and 162: Brown, R. 1875: Geological notes on
Page 163 and 164: a rosetted spreite trace fossil: Da
Page 165 and 166: ing bark from the Nûgssuaq peninsu
Page 167 and 168: 1998: The syn-volcanic Naajaat lake
Page 169 and 170:
Appendix: Place names and localitie
Page 171:
Place name Place name P Paatuut sou
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Geological Survey of Denmark and Greenland Bulletin 19 ... - Geus

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