Visualize and interpret the geometry, heterogeneity and lateral ...

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There are no sedimentological logs covering Channel body 14, due to restricted accessibilityof the channel body. Channel body 14 is located in an area with steep cliffs and abundant rockfalls. To say something about the depositional environment of the respective stratigraphicalinterval, one therefore needs to follow the stratigraphy to the nearest log. The closest log issituated SE of Iversenfjellet and is displayed in Figure 4.28C. On this log one can see that thestratigraphical interval of Channel body 14 consists of fine- grained material with waveripples and ripple lamination, similar to the sediments found in the stratigraphical interval ofChannel body 13. Fine- grained sediments with these kinds of structures can be found in theinterdistributary areas of the delta plain (Reading and Collinson, 2006), meaning that apossible interpretation of Channel body 14 is a distributary channel. However, there are no,observed, diagnostic sedimentary structures to strengthen this theory. The lack of tidalinfluence in the deposits of this stratigraphical interval, as well as in the units above andbelow, can indicate that Channel body 14 is a fluvial dominated, distributary channel.The more fractured sediments found in and possibly between the pinch outs seen in Figure4.29, can be interpreted as levee deposits. Levees are ridges built on either side of a channel(Reading and Collinson, 2006). Regarding this as a meandering channel where the channelbody disappears as the channel turns, the sediments displayed with red in Figure 4.29 aresuggested to be levee deposits.A possible explanation for the disappearing of the fault, as described above, is erosion. Asseen on the photos and in the pictures of the PhotoModeler-model, the fault is found at theedge of the island. The difference in lithology between the gullies and the cliffs (Figure4.32B) can clearly indicate that the areas, which have undergone more erosion (gullies), arepart of the rock record that has been faulted down, hence they are on the northern side of thefault plane. The cliffs represent the sediments south of the fault-plane, which are not displacedby the fault. That means that where it is possible to see the fault, the sediments south of thefault are not eroded away (Figure 4.32).If we assume that the theory about the southernmost fault disappearing towards the top of theisland, is true, the distance from Hopen member to Channel body 14 must be measured fromthe displaced part of the channel body (on the left side of the fault in Figure 4.31C). Thedistance is then 183 meters.80
Figure 4.32:Interpretation offault plain of thefault displacingChannel body14.(A) Photo andinterpretation ofthe fault plain.(B) A close upphoto of thegullies and cliffswith differentsediments. (C) Aclose-up photoillustrating thatthe gullies andcliffs consist of thesame sediments inthis area. (D) Aphoto of thewestern most partof the fault, whichshow a cleardisplacement.81
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Visualize and interpret the geometr
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SammendragEn digital 3D-modell av H
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4.2.3 Channel body 8 (SW of Lyngefj
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Secondly, I wish to thank my co-sup
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1.3 Regional geological settingThe
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The Triassic of Svalbard consists o
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Geerdalen Formation is overlain by
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1.5 Previous work at HopenThe Swedi
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2. MethodsThe work of this thesis i
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2.2 PhotoModeler-modelThe program P
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2.3 Sources of errorThere are no kn
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3. Lateral distribution of possible
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Figure 3.2: This photo and drawing
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3.2 Lateral distribution of Slottet
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Hopen member and the top of the mou
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4. Channel bodiesIn this chapter ob
Page 37 and 38: 4.1.1 Channel body 1 (Northern chan
Page 39 and 40: Figure 4.2: Photos and illustration
Page 41 and 42: 4.1.2 Channel body 2 (Binnedalen)Ch
Page 43 and 44: Figure 4.4: This figure illustrates
Page 45 and 46: (1) DiscussionFacies occurring in t
Page 51 and 52: 4.1.4 Channel Body 4 (Johan Hjortfj
Page 53 and 54: Figure 4.10: Photos and illustratio
Page 55 and 56: The log shows that the channel body
Page 57 and 58: 4.2.1 Channel body 5 (SW of Nørste
Page 59 and 60: (1) DiscussionOne of the interestin
Page 61 and 62: Another explanation of the apparent
Page 63 and 64: Figure 4.14: This figure illustrate
Page 65 and 66: 4.2.4 Channel body 9 (Blåfjellet,
Page 67 and 68: Figure 4.16: Illustrates Channel bo
Page 69 and 70: The outcrop orientations and/or a n
Page 71 and 72: Unfortunately the stratigraphic int
Page 73 and 74: Figure 4.22: An illustration of the
Page 75 and 76: 2006). Flaser bedding is characteri
Page 77 and 78: elow the stratigraphical level of C
Page 79 and 80: indications on the logs from the st
Page 81 and 82: Figure 4.27: This figure illustrate
Page 83 and 84: Figure 4.28: This Figure illustrate
Page 85 and 86: is perhaps the best indication of a
Page 87: 4.31: This figure illustrates the w
Page 91 and 92: 4.3.1 Channel body 15 (NW of Braast
Page 93 and 94: 4.3.2 Channel body 16 (Blåfjellet
Page 95 and 96: 4.3.3 Channel body 17 (Djupskaret)C
Page 98 and 99: Figure 4.36: This figureillustrates
Page 101 and 102: 5. Discussion5.1 Map relevant featu
Page 103 and 104: Geerdalen Formation of no more than
Page 105 and 106: ase of Hopen member. Going further
Page 107 and 108: 6. Conclusions18 channel bodies are
Page 109 and 110: ReferencesAinsworth, R. B., Vakarel
Page 111: Knarud, R. 1980. En sedimentologisk
Page 114 and 115: AppendixAppendix 1: The measured se
Page 116 and 117: 108
Page 118 and 119: Appendix 2: Legend of the measured
Page 120 and 121: Appendix 4: Illustrations of the Ph
Page 122: Figure 6: Illustration of the Photo
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