MIME FM

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• Generell informasjon

  Generell informasjon

  Attributt	Verdi
  Litostrat. enhet Den litostratigrafiske enhetens offisielle navn.	MIME FM
  NPDID for litostrat. enhet Sokkeldirektoratets entydige nøkkel for litostratigrafiske enheter.	106
  Nivå Angir den litostratigrafiske enhetens nivå. Lovlige verdier: GROUP, FORMATION, MEMBER.	FORMATION
  Litostrat. enhet, forelder Den litostratigrafiske enhetens offisielle navn, refererer til forelder. Se også nivå. Vil være tom hvis Nivå = GROUP.	CROMER KNOLL GP

• Nivå under

  Nivå under

  Litostrat. enhet

• Beskrivelse

  Mime Formation
  
  Name

  Named after a god from Norse mythology who was considered to be very wise.

  Well type section

  Norwegian well 34/10-18 from 2351 m to 2340 m, coordinates N 61°14'22.48", E 02°03'18.83" (Fig 5.16) . Cores (lower half of the formation).

  Well reference section

  Norwegian well 17/4-1 from 2122 m to 2080 m, coordinates N 58°35'54.00", E 03°16'05.00" (Fig 5.17) . No cores.

  Thickness

  In the type well the Mime Formation is 11 m, and in the reference well it is 42 m thick. Usually, the thickness varies between 5 and 20 m.

  Lithology

  The formation is dominated by limestones and marls. It often contains impure carbonates that are reworked and mixed with smaller quantities of sand and silt. The formation is sometimes chalky. The matrix is usually very calcareous. Oolites are observed in some wells in the East Shetland Basin. The colour is usually white or light pink, but may vary slightly on account of the sand/silt mixture.

  Basal stratotype

  In those wells where the Mime Formation is present it defines the lower boundary of the Lower Cretaceous, lying on the Upper Jurassic sediments or older rocks. This boundary is always an unconformity and can most often be seen on the logs as a decrease in gamma-ray readings and an increase in velocity upwards from the underlying Jurassic sediments.

  Characteristics of the upper boundary

  The upper boundary is usually defined at the bottom of more or less calcareous shales in the Åsgard Formation . This boundary is reflected on the logs as an upward increase in gamma-ray readings and a reduction in velocity (Fig 5.17) . The upper boundary can also be defined by the overlying shales of the Sola or Rødby formations. The boundary will normally be reflected on logs as described above (Fig 5.16) .

  Distribution

  The formation is found only as narrow zones along structural highs. On the flanks of the Viking Graben it may be seen almost continuously from approximately 58° to 62° N. It is also found as a thin carpet over most of the East Shetland Basin and along the Fladen Ground Spur, the Utsira High-Lomre Terrace, the northwest side of the Sele High, and the Jæren High.
  The formation is not encountered in the more central parts of the basins, and it is doubtful if it is present along the boundaries of the Fennoscandian Shield.

  Age

  The formation is time-transgressive, and is dated to Late Valanginian to Albian. It is oldest in the deeper parts along the basin margins and becomes younger up along the flanks. In most of the East Shetland Basin, along the Utsira, Bergen, Sele and Jæren highs, and along the flanks of the Viking Graben, it is usually of Barremian/Hauterivian age (Fig 5.4) .

  Depositional environment

  Palaeontological investigations together with the observation of oolites indicate a transgressive, shallow marine, depositional environment.

  Remarks

  Hesjedal & Hamar (1983) described the impure, reworked limestones resting directly on the Base Cretaceous unconformity over the structural highs, as the Utvik Formation. This formation is formally defined as the Mime Formation in this paper, since the name suggested was not in accordance with existing recommendations.

  Source

  • Isaksen, D. and Tonstad, K. (eds.) 1989: A revised Cretaceous and Tertiary lithostratigraphic nomenclature for the Norwegian North Sea. NPD-Bulletin No. 5, 59 pp.

• Brønnbaner som penetrerer

  Brønnbaner som penetrerer

  Brønnbane navn	Dato for boreslutt	Topp dyp [m]	Bunn dyp [m]
  15/12-3	22.12.1980	2977	2998
  16/2-5	13.05.2009	1880	1884
  17/4-1	26.08.1968	2080	2122
  25/2-16 S	13.09.2001	3709	3711
  25/6-1	03.02.1986	2222	2234
  25/6-2	29.05.1992	2261	2278
  25/8-9	28.01.1997	2376	2379
  25/9-2 S	03.08.2003	2153	2163
  30/2-5 S	12.07.2020	4096	4110
  30/8-3	05.01.1998	3189	3192
  30/9-12	09.05.1991	2545	2560
  30/9-12 A	04.06.1991	2676	2691
  30/9-12 AR	11.07.2002	2680	2695
  30/9-13 S	11.10.1991	2931	2943
  30/9-13 SR	17.07.2002	2935	2947
  30/9-14	14.05.1993	2965	2968
  30/9-16	08.08.1994	2648	2652
  30/9-18	11.04.1995	2586	2595
  30/9-28 S	26.02.2016	2878	2883
  31/3-2	30.04.1984	1533	1541
  33/2-1	26.12.2014	3935	3952
  33/2-2 S	10.06.2015	2935	2946
  33/6-2	02.01.1997	3455	3466
  33/6-3 S	24.07.2012	4080	4084
  33/6-5 S	16.10.2021	3273	3294
  33/9-6	31.08.1976	2922	2939
  33/9-15	08.06.1992	2737	2742
  33/9-16	20.01.1993	2680	2683
  33/9-18	20.12.1994	2841	2846
  33/9-18 A	24.01.1995	3190	3200
  33/9-19 A	09.08.1996	2825	2840
  33/9-19 S	23.07.1996	2678	2689
  33/9-20 S	09.09.2006	5169	5211
  33/9-21 A	30.04.2009	5617	5662
  33/9-21 B	11.06.2009	5617	5662
  33/9-21 S	19.03.2009	5702	5728
  33/9-22 S	17.09.2017	2660	2669
  33/12-10 S	23.10.2014	2933	2944
  34/2-2 R	08.05.1981	3375	3378
  34/2-5 S	31.03.2018	3396	3407
  34/3-1 A	30.10.2008	3776	3782
  34/3-1 S	10.09.2008	3769	3777
  34/3-2 S	30.12.2009	3679	3688
  34/3-3 A	03.01.2012	4726	4743
  34/3-3 S	19.11.2011	3739	3748
  34/3-4 A	13.02.2015	3981	3984
  34/3-5	16.04.2015	3715	3719
  34/4-1	16.12.1979	2494	2508
  34/4-6	27.03.1986	2565	2577
  34/4-7	12.05.1987	2495	2502
  34/4-9 S	15.02.1997	2495	2513
  34/4-10 R	18.04.2000	3782	3790
  34/4-12 A	18.02.2010	2561	2563
  34/4-12 S	25.01.2010	2737	2738
  34/4-14 S	19.05.2015	4250	4265
  34/4-15 A	12.08.2020	3524	3532
  34/4-15 S	15.07.2020	3373	3378
  34/4-16 S	31.03.2021	3386	3398
  34/4-18 S	06.03.2022	2809	2818
  34/5-1 A	10.04.2010	4070	4082
  34/5-1 S	13.03.2010	3544	3553
  34/5-2 S	04.07.2018	3472	3481
  34/6-5 S	08.06.2021	3396	3406
  34/7-1	24.07.1984	2387	2392
  34/7-3	02.01.1985	2357	2363
  34/7-4	16.01.1985	2504	2517
  34/7-5	16.03.1985	2489	2496
  34/7-8	11.04.1986	2276	2278
  34/7-12	17.12.1987	2160	2161
  34/7-13	13.04.1988	2485	2493
  34/7-14	02.12.1989	2178	2182
  34/7-15 S	03.09.1990	3397	3440
  34/7-16	13.08.1990	2386	2390
  34/7-16 R	15.10.1990	2387	2391
  34/7-16 R2	05.07.1994	2386	2390
  34/7-17	07.04.1991	2448	2451
  34/7-17 A	04.05.1991	2487	2495
  34/7-18	17.09.1991	2283	2284
  34/7-19	27.12.1991	2437	2442
  34/7-19 R	12.07.1994	2444	2449
  34/7-20	27.08.1992	2572	2578
  34/7-21	11.12.1992	2502	2508
  34/7-21 A	12.02.1993	2851	2870
  34/7-22	01.10.1993	2176	2179
  34/7-23 A	20.05.1994	3196	3203
  34/7-24 S	24.03.1995	2922	2928
  34/7-25 S	14.09.1996	2785	2791
  34/7-26 A	26.02.1998	4123	4129
  34/7-26 SR	02.02.1998	4512	4528
  34/7-28	02.03.1998	2658	2666
  34/7-29 S	14.04.1998	2701	2706
  34/7-29 SR	17.03.1999	2700	2705
  34/7-30 SR	02.12.1999	2395	2399
  34/7-31	13.04.2001	2460	2470
  34/7-31 A	25.04.2001	2820	2830
  34/7-31 A	25.04.2001	3386	3393
  34/7-32	27.10.2001	2527	2535
  34/7-36 S	17.09.2014	3380	3396
  34/7-37 S	02.12.2020	2644	2655
  34/7-E-4 AH	13.07.2020	4355	4366
  34/8-6	03.11.1991	3468	3477
  34/8-16 S	15.11.2015	3109	3116
  34/10-18	30.08.1983	2340	2351
  34/10-33	15.12.1988	3014	3028
  34/10-33 A	03.02.1989	3030	3034
  34/10-33 B	10.07.1989	3008	3012
  34/10-33 C	01.08.1989	3008	3012
  34/10-33 CR	27.04.1990	3008	3012
  34/10-37 A	03.04.1995	2576	2587
  34/11-6 S	26.01.2017	6525	6538
  35/1-1	18.07.2002	3736	3742
  35/1-2 S	19.12.2010	3618	3624
  35/10-1	16.01.1992	3085	3098
  35/11-3 S	09.09.1989	2803	2821
  35/11-5	03.11.1991	2621	2658
  35/11-12	14.05.2000	2798	2808
  35/11-12	14.05.2000	2878	2891

• Brønnbaner med kjerner

  Brønnbaner med kjerner

  Brønnbane navn	Dato for boreslutt	Kjernelengde [m]
  33/2-2 S	10.06.2015	3
  33/9-15	08.06.1992	5
  33/9-16	20.01.1993	2
  33/12-10 S	23.10.2014	6
  34/4-6	27.03.1986	1
  34/7-16	13.08.1990	1
  34/7-19	27.12.1991	3
  34/7-20	27.08.1992	2
  34/7-21 A	12.02.1993	20
  34/7-23 A	20.05.1994	4
  34/7-26 A	26.02.1998	6
  34/7-26 SR	02.02.1998	9
  34/7-29 S	14.04.1998	5
  34/10-18	30.08.1983	7