AMUNDSEN FM

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• General information

  General information

  Attribute	Value
  Lithostrat. unit The lithostratigraphic unit's official name.	AMUNDSEN FM
  NPDID lithostrat. unit Norwegian Offshore Directorate's unique id for lithostratigraphic units.	4
  Level Indicates the lithostratigraphic unit's level. Legal values: GROUP, FORMATION, MEMBER.	FORMATION
  Lithostrat. unit, parent The parent lithostratigraphic unit's official name. See also level. Will be empty if Level = GROUP.	DUNLIN GP

• Level below

  Level below

  Lithostrat. unit

• Description

  Amundsen Formation
  
  Name

  Named by Deegan & Scull (1977) who gave it "sub-unit" status.

  Well type section

  UK well 211/29-3 (Shell) from 2993m to 3051m, coord N 61°08'06", E 01°43'36.5" (Fig 3.10) .

  Well reference sections

  Norwegian wells 33/9-1 (Mobil) from 2838 m to 2923m, coord N 61°15'07.5", E 01°50'25.8" (Fig 3.11) , 31/2-1 (Shell) from 2272.5 m to 2292.5 m and from 2134 m to 2176 m, coord N 60°46'19,16", E 03°33'15.87" (Fig 3.13) . and 30/6-7 (Norsk Hydro) from 3023 m to 3151.5 m, coord N 60°38'39.49", E 02°45'21.74" (Fig 3.12) .

  Thickness

  58 m in the type well, 85 m in well 33/9-1 , 128.5 m in well 30/6-7 and 62 m in well 31/2-1 , where the formation is split by the Johansen Formation , forming an upper (42 m) and a lower (20 m) unit.

  Lithology

  In the well type section the formation consists of light to dark grey, firm, non-calcareous siltstones and shales, in part carbonaceous and pyritic. Thin, fine to coarse grained, grey calcareous and glauconitic sandstone beds are present in the marginal areas of the basin. In the Norwegian sector the formation is more calcareous, especially in the lower part.

  Boundaries

  The base of the formation is the base of the Dunlin Group (defined above). The top is marked by the change to the more regular gamma ray and sonic log response of the overlying Burton Formation . Where the Burton Formation is missing (on the Horda Platform), the upper boundary is the base of the Cook Formation .

  Distribution

  The formation is widely distributed in the East Shetland Basin and Viking Graben north of 59°N. Towards the northwest the formation appears to overstep the Statfjord Formation and rests on the Hegre Group .

  Age

  Probably Hettangian to Sinemurian or Early Pliensbachian.

  Depositional environment

  The formation contains exclusively marine sediments, representing deposition on a shallow marine shelf.

  Source

  Vollset, J. and Doré, A. G. (eds.) 1984: A revised Triassic and Jurassic lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 3, 53 pp.

• Wellbores penetrating

  Wellbores penetrating

  Wellbore name	Wellbore completion date	Top depth [m]	Bottom depth [m]
  24/12-1 R	14.08.1978	4698	4774
  25/2-4	20.10.1975	3965	4084
  25/2-5	04.08.1976	3605	3652
  25/2-12	12.11.1988	3876	3990
  25/2-13	25.01.1990	3645	3696
  25/5-1	01.08.1987	3129	3232
  25/6-1	03.02.1986	2344	2417
  25/7-8 S	09.01.2020	2872	2976
  25/8-5 S	22.09.1994	2922	3040
  25/8-5 SR	03.08.1997	2922	3040
  25/8-7	12.08.1995	2340	2380
  25/8-9	28.01.1997	2515	2548
  25/8-16 S	13.05.2009	2400	2495
  25/8-19 A	19.03.2020	2187	2211
  25/8-19 S	30.12.2019	2227	2245
  25/8-22 S	20.07.2021	2097	2114
  25/9-1	22.04.1995	2202	2301
  25/9-3	20.09.2009	2113	2218
  25/10-12 S	18.01.2015	2194	2241
  25/10-17 S	10.02.2023	3903	3944
  29/3-1	15.09.1986	4215	4389
  29/6-1	09.05.1982	4645	4729
  29/9-1	24.02.1984	4562	4640
  30/2-3	05.10.1992	4241	4288
  30/3-1 R	26.04.1982	4162	4227
  30/3-3	30.05.1983	3288	3387
  30/3-4	12.06.1985	3128	3232
  30/3-4 R	18.11.2001	3130	3234
  30/3-5 S	19.06.1992	4494	4538
  30/3-6 S	06.03.1994	5897	6027
  30/3-7 B	04.08.1998	4439	4611
  30/3-7 BR	17.11.2001	4439	4611
  30/3-7 S	12.12.1995	5234	5271
  30/3-10 S	29.04.2009	3905	4034
  30/4-2	16.05.1980	4243	4337
  30/6-1	22.09.1979	2589	2712
  30/6-2	11.12.1979	2513	2568
  30/6-3	07.03.1980	2768	2884
  30/6-4	11.05.1981	2893	2942
  30/6-5	15.08.1981	3123	3223
  30/6-7	24.08.1982	3023	3152
  30/6-8	06.08.1982	3471	3532
  30/6-9	16.12.1982	2964	3046
  30/6-9 R	12.05.1990	2962	3044
  30/6-11	30.03.1983	3768	3893
  30/6-14	08.02.1984	2734	2784
  30/6-15	05.09.1984	3174	3241
  30/6-17 A	18.03.1986	2488	2632
  30/6-17 R	04.02.1986	2441	2563
  30/6-18	23.11.1985	2983	3121
  30/6-19	21.06.1986	3198	3255
  30/6-19 R	25.05.1994	3197	3254
  30/6-20	13.04.1986	2792	2937
  30/6-21	09.04.1987	2922	3052
  30/6-22	13.07.1988	3170	3290
  30/6-22 R	02.06.1994	3169	3289
  30/6-23	01.07.1990	3102	3163
  30/6-24 S	06.12.1991	3581	3682
  30/6-26	07.10.2001	2598	2669
  30/6-27	30.10.2001	3095	3101
  30/8-1 S	01.03.1995	4556	4688
  30/8-1 SR	01.03.1996	4556	4691
  30/9-3 A	20.05.1984	3565	3679
  30/9-4 S	30.03.1985	4054	4173
  30/9-5 S	19.07.1985	2527	2604
  30/9-6	21.04.1987	2907	2981
  30/9-7	23.12.1988	3426	3535
  30/9-9	06.11.1989	2639	2757
  30/9-10	21.09.1990	3502	3622
  30/9-11 A	29.12.1990	2875	2973
  30/9-13 S	11.10.1991	3826	3976
  30/9-13 SR	17.07.2002	3830	3980
  30/9-15	05.01.1994	2489	2616
  30/9-16	08.08.1994	3267	3457
  30/9-28 S	26.02.2016	3515	3645
  30/10-5	01.05.1975	5010	5049
  30/11-3	14.03.1983	4324	4637
  30/11-4	24.07.1984	4319	4640
  30/12-1	07.03.1994	3549	3596
  31/1-1	15.02.2008	2767	2787
  31/1-2 S	12.01.2021	3494	3555
  31/2-1	09.11.1979	2134	2176
  31/2-1	09.11.1979	2273	2293
  31/2-1 R	09.11.1981	2135	2177
  31/2-1 R	09.11.1981	2274	2294
  31/2-2 R	06.10.1980	2202	2233
  31/2-2 R	06.10.1980	2344	2360
  31/2-3	20.07.1980	2055	2097
  31/2-3	20.07.1980	2176	2236
  31/2-4 R	06.04.1981	2107	2126
  31/2-4 R	06.04.1981	2241	2256
  31/2-4 R2	12.11.1982	2107	2126
  31/2-4 R2	12.11.1982	2241	2256
  31/2-5	21.12.1980	2277	2308
  31/2-5	21.12.1980	2387	2404
  31/2-5 R	20.07.1981	2270	2301
  31/2-5 R	20.07.1981	2380	2397
  31/2-5 R2	22.04.1984	2270	2301
  31/2-5 R2	22.04.1984	2380	2397
  31/2-8	18.08.1982	2896	2967
  31/2-8	18.08.1982	3035	3048
  31/2-19 S	13.07.1996	3749	4059
  31/3-1	13.10.1983	1992	2001
  31/3-1	13.10.1983	2088	2105
  31/3-3	18.11.1984	2293	2306
  31/4-2	15.11.1979	2533	2632
  31/4-3	11.05.1980	2470	2543
  31/4-5	29.07.1981	2521	2645
  31/4-7	11.09.1984	2283	2384
  31/4-8	11.05.1986	2255	2346
  31/4-11	12.09.2000	2985	3178
  31/4-A-13 C	26.07.2022	7490	7704
  31/5-2	11.11.1983	2194	2225
  31/5-2	11.11.1983	2323	2336
  31/5-2 R	30.08.1984	2194	2225
  31/5-2 R	30.08.1984	2323	2336
  31/5-7	06.03.2020	2818	2832
  31/6-1	28.10.1983	2083	2111
  31/6-2 R	08.09.1984	2138	2164
  31/6-3	26.12.1983	2125	2143
  31/6-6	29.07.1984	2193	2225
  31/7-1	22.06.2016	2618	2756
  31/11-1 S	28.06.2021	2998	3008
  32/4-1	04.12.1996	1791	1816
  32/4-3 S	26.10.2019	1797	1823
  33/5-2	18.11.1981	4391	4412
  33/6-1	06.07.1979	3755	3792
  33/6-2	02.01.1997	3872	3913
  33/6-3 S	24.07.2012	4230	4267
  33/9-1	04.06.1974	2838	2923
  33/9-6	31.08.1976	3280	3322
  33/9-12	03.08.1987	2692	2814
  33/9-13 S	24.12.1987	2919	3003
  33/9-19 A	09.08.1996	3283	3319
  33/9-19 S	23.07.1996	3027	3122
  33/12-6	21.06.1976	3565	3721
  33/12-7	27.04.1989	3530	3660
  33/12-8 S	26.04.2002	3476	3647
  34/2-2 R	08.05.1981	3705	3840
  34/2-4	11.06.1985	3972	4063
  34/3-1 A	30.10.2008	4131	4162
  34/3-1 S	10.09.2008	4016	4125
  34/3-2 S	30.12.2009	4210	4273
  34/3-4 A	13.02.2015	4486	4535
  34/3-5	16.04.2015	4222	4275
  34/4-2	24.05.1980	2584	2597
  34/4-3	30.03.1982	4281	4353
  34/4-5	06.04.1984	3520	3559
  34/4-14 S	19.05.2015	4538	4640
  34/5-1 S	13.03.2010	3761	3834
  34/5-2 S	04.07.2018	3674	3711
  34/6-1 S	28.08.2002	3941	4199
  34/6-2 S	05.11.2012	3782	4055
  34/6-3 A	01.11.2014	3727	3953
  34/6-3 S	24.09.2014	4013	4360
  34/7-2	10.10.1984	2085	2152
  34/7-3	02.01.1985	2363	2414
  34/7-4	16.01.1985	2517	2536
  34/7-5	16.03.1985	2794	2893
  34/7-6	30.05.1985	2447	2510
  34/7-7	16.12.1985	2455	2560
  34/7-8	11.04.1986	2284	2299
  34/7-10	29.10.1986	2440	2531
  34/7-12	17.12.1987	2547	2606
  34/7-13	13.04.1988	2758	2859
  34/7-16	13.08.1990	2685	2700
  34/7-16 R	15.10.1990	2686	2821
  34/7-16 R2	05.07.1994	2685	2820
  34/7-17	07.04.1991	2832	2943
  34/7-20	27.08.1992	2947	3046
  34/7-34	10.03.2009	2349	2461
  34/7-34 A	20.03.2009	2365	2639
  34/8-1	08.03.1986	3198	3324
  34/8-2	17.11.1986	2937	3001
  34/8-3	14.09.1988	3155	3278
  34/8-4 A	27.05.1992	2903	3057
  34/8-4 AR	07.03.2003	2910	3065
  34/8-4 S	09.06.1991	2938	2950
  34/8-5	01.04.1991	3249	3384
  34/8-7	16.07.1992	4970	5086
  34/8-7 R	10.02.1993	4970	5086
  34/8-8	24.08.1992	3287	3388
  34/8-8 R	09.03.1993	3286	3387
  34/8-9 S	28.12.1992	3123	3150
  34/8-10 S	09.12.1993	2972	3039
  34/8-12 S	09.12.2001	3158	3185
  34/8-13 A	13.05.2009	3593	3735
  34/8-13 S	26.06.2009	4085	4123
  34/8-17 S	14.03.2014	4244	4285
  34/8-19 S	20.06.2018	5893	6100
  34/10-1	08.09.1978	2120	2268
  34/10-2	08.12.1978	3222	3325
  34/10-3	07.06.1979	2336	2495
  34/10-3 R	10.10.1987	2333	2492
  34/10-4	15.10.1979	2175	2340
  34/10-5	02.01.1980	2388	2562
  34/10-7	23.03.1980	1945	2053
  34/10-7 R	14.07.1983	1942	2050
  34/10-9 R	03.07.1980	2214	2375
  34/10-11	05.03.1981	1868	1890
  34/10-12	12.09.1981	2470	2688
  34/10-13	05.01.1982	1905	1924
  34/10-14	19.03.1982	2203	2372
  34/10-15	12.12.1982	2049	2213
  34/10-16	11.04.1983	3625	3798
  34/10-16 R	27.09.1983	3622	3796
  34/10-17	08.07.1983	3267	3422
  34/10-18	30.08.1983	2843	2978
  34/10-19	06.12.1983	1840	2005
  34/10-21	22.10.1984	3763	3906
  34/10-23	13.10.1985	4578	4715
  34/10-30	12.05.1986	2983	3120
  34/10-32	13.07.1987	3286	3353
  34/10-32 R	10.08.1987	3286	3353
  34/10-33	15.12.1988	3676	3799
  34/10-35	01.07.1992	4116	4239
  34/10-38 S	29.05.1995	3267	3451
  34/10-39 S	20.06.1995	3065	3238
  34/10-41 S	28.08.1997	3191	3368
  34/10-43 S	11.04.2001	3600	3878
  34/10-44 S	08.07.2001	3535	3720
  34/10-46 S	30.01.2002	5273	5428
  34/10-47 A	14.11.2002	2818	2964
  34/10-49 B	21.05.2006	2980	3405
  34/10-49 B	21.05.2006	3988	4196
  34/10-49 S	08.05.2006	2980	3278
  34/10-49 S	08.05.2006	4022	4563
  34/10-53 S	24.03.2011	4234	4424
  34/10-54 A	18.04.2014	4359	4467
  34/10-55 S	26.03.2017	7240	7256
  34/11-1	25.10.1994	4395	4514
  34/11-2 S	17.05.1996	4512	4696
  34/11-3	16.01.1997	4360	4471
  35/1-1	18.07.2002	4180	4264
  35/1-2 S	19.12.2010	3983	4142
  35/3-2	26.10.1980	3975	4143
  35/3-5	31.03.1982	4060	4092
  35/4-1	24.05.1997	4515	4704
  35/7-1 S	15.08.2011	4782	4825
  35/8-1	24.01.1981	3995	4093
  35/8-2	21.05.1982	4095	4203
  35/9-9	18.11.2013	3180	3226
  35/9-11 A	21.05.2014	3709	3753
  35/9-11 A	21.05.2014	3782	3801
  35/9-11 S	15.04.2014	3710	3752
  35/9-11 S	15.04.2014	3782	3800
  35/10-1	16.01.1992	3649	3665
  35/10-1	16.01.1992	3806	3826
  35/10-2	22.08.1996	4471	4601
  35/10-7 S	11.12.2021	3545	3594
  35/11-1	06.08.1984	2684	2764
  35/11-2	04.12.1987	3712	3730
  35/11-2	04.12.1987	3775	3798
  35/11-3 S	09.09.1989	3764	3794
  35/11-3 S	09.09.1989	3895	3930
  35/11-4	29.12.1990	2918	3023
  35/11-4 R	27.01.1992	2928	3033
  35/11-5	03.11.1991	3533	3570
  35/11-5	03.11.1991	3628	3689
  35/11-6	20.04.1992	3864	3887
  35/11-6	20.04.1992	3924	3943
  35/11-7	29.09.1992	2687	2791
  35/11-18 A	16.12.2015	3928	3943
  35/11-18 A	16.12.2015	3953	3968
  35/11-22 S	02.02.2019	3565	3657
  35/11-22 S	02.02.2019	3676	3738
  35/12-1	24.04.1992	3003	3020

• Wellbores with cores

  Wellbores with cores

  Wellbore name	Wellbore completion date	Core length [m]
  25/2-12	12.11.1988	9
  25/2-13	25.01.1990	21
  25/7-8 S	09.01.2020	7
  25/10-12 S	18.01.2015	5
  30/3-4	12.06.1985	3
  30/4-2	16.05.1980	15
  30/6-11	30.03.1983	0
  30/6-17 A	18.03.1986	16
  30/6-17 R	04.02.1986	4
  30/6-24 S	06.12.1991	0
  30/11-4	24.07.1984	5
  34/4-2	24.05.1980	1
  34/4-5	06.04.1984	16
  34/7-2	10.10.1984	5
  34/7-3	02.01.1985	18
  34/7-4	16.01.1985	3
  34/7-5	16.03.1985	14
  34/7-8	11.04.1986	10
  34/7-10	29.10.1986	9
  34/8-1	08.03.1986	22
  34/8-4 A	27.05.1992	17
  34/8-5	01.04.1991	21
  34/8-10 S	09.12.1993	43
  34/10-1	08.09.1978	12
  34/10-3	07.06.1979	12
  34/10-7	23.03.1980	5
  34/10-11	05.03.1981	13
  34/10-14	19.03.1982	14
  34/10-15	12.12.1982	40
  34/10-19	06.12.1983	27
  35/3-2	26.10.1980	12
  35/10-1	16.01.1992	9