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Alaska Oil and Gas Conservation Commission
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HomeMy WebLinkAboutGMC Data Report No. 104An examination and interpretation of megafossil fragments and
microfossils from cuttings of the Chevron U.S.A. Kavearak Point
32-25 wel 1
Received 27 January 1988
Total of 3 pages in report
Geologic Materials Center Data Report No. 104
INTRODUCT ION
Compos ite 90'
RESULTS
Depth
500'-1,760'
1,760'-2,210'
2,210'-4,190'
4,190'-5,990'
STANDARD OIL COMPANY OF CALIFORNIA
KAVEARAK PTi 32-25
Section 25'T 13N£'R IOE
samples from 500-7,970' were analyzed.
Age: Indeterminate.
P a 1 eoen v iron men t:
concl us'lye.
Possibly transitional, but not
Remarks: This interval is barren of microfossils.
Age: Indeterminate.
Pal eoenvi ronmen t: Transition to possibly inner
n eri'ti c.
Remarks: Bathysiphon spp. is the only mi crofoss il
seen in this interval.
Age: Indetermine.
Paleoenvironment: Probably transitional.
Remarks: This interval contains abundant peat and
plant fragments. It is barren of microfossil.
~: Late Cretaceous.
Paleoenvironment: Possibly inner to middle neritic.
Remarks: The faunal assemblage consists of
Haplophragmoides rota, H. spp., Bathysiphon bros~ei
Verneuil inoi des bear-~awenses, V. fiScheri ~
Bathysip.hon. bros~i, Eoeponidella. -~trombbde~, E.
l inki, Trochammina albertensis, Hapl ophra~)moi des
rota, Gavel inel la awunensis, and Glo0ul in~
toj~a i]oruk ens i s.
It is of interest that the abundance of specimens and
species diversity is greatly reduced in the interval
5,360'-5,990'. Coal fragments are observed in sample
5,360'-5,450' and pryrite in samples 5,720' to 5,990'.
GMC Data Report No. 104 Page 1/3
5,990'-6,320' Age.: Campanian/Turonian.
6,320'-6,410'
6,410' -6,560'
6,560'-6,920'
6,92O'-7,490'
7,490' -7,640'
Paleoenvironment: Probably bathyal.
Remarks: The faunal
radiola"rians and rare to
The Inoceramus prisms are
slope.
assemblage consists of
common Inoceramus prisms.
probably transported down
Age: In(lertermina te
Pal eoenvi ronmen t: Indeterminate
Remarks: Abundant Inoceramus prisms are seen in this
'interval.
Age: Possibly late Early Cretaceous.
Paleoenvironment: Possibly inner neritic to bathyal.
Remarks: The faunal assemblage consists of
Lithocampe spp. and abundant fish remains.
A~e: Probably Aptian/Barremian.
Paleoenvironment: Possibly inner to middle neritic.
Remarks: The faunal assemblage consists of Gaudr~vina
tailleuri, Saccammina spp., Globulina topagorukensis,
E~erel la ~i~ TAmmobacul i res cop~ol ~thi i~ormis,
'D~scorbis turbo, Haplophra~moide~ spp.
A~e: Early Cretaceous.
Paleoenvironment: Marine, probably shelf.
Remarks:
G1 omos pi ra
G1 obul in~-
Trochammina
study.
The faunal assemblage consists of
3131, Haplogphragmoides topa~orukensis H.
in fl ati grandis, Vaoinulina texi~ i~,
topa~Iorukens is, Reopha spp., and
sablei. J'This assemblage, requires further
Age: Valanginian.
Paleoenvironment: Possibly inner to outer neritic.
Remarks: The faunal assemblage consists of Gaudryina
milleri, Lenticul ina muensteri, Saracenaria spp
'Ammoba cul i tes s pp., and Hap1 o pra~moi des
'i n'fl.a, ti ~trandis.
GMC Data Re port No. 104
Page 2/3
7,640'-70'
A~)e: Possibly Late Jurassic.
Paleoenvironment: Marine.
Remarks: Time has not permitted
of the remainder of this well.
deta il ed
analysis
GMC Data Report No. 104
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Page 3/3
