Geoscience Reference
In-Depth Information
Depositional architecture
(modified from Dam&Surlyk, 1998)
T- R
south
T- R
north
Lithostratigraphy
Comments
SOUTH
NORTH
VARDEKLØFT GROUP
Thick shoreface sandstone deposits
176.5
SORTEHAT
FM.
Offshore mudstone and distal
marine sandy wedge deposits
MFS6
T-R6
T-R6
MFS6
180.1
TS6
SU3
FSg
TREF JORD BJERG
MEMBER
TS6
SU3
Tide-dominated incised
valley/estuary complex deposits
Wave-dominated delta lobes and
restricted brackish embayment deposits
T B. Mbr.
T-R5
SKÆVDAL MEMBER
MFS5
MFS5
T-R5
FSf
L Mbr.
TS5
SU2
OSTREAELV
FM.
HARRIS-
FJELD
MEMBER
Tidal-fluvial transition, middle
estuary, tide-dominated delta
complex, tide-dominated estuary
complex deposits
NATHORST
FJELD
MEMBER
LEPIDOPTERISELV
MEMBER
NF
Mbr.
T-R4
MFS4
189.6
TS4
TS5
SU2
T-R3
MFS3
ASTA RTEKLØFT ME MBER
Tide-dominated deltaic, estuarine
and tidal-fluvial transition deposits
HORSEDAL
MEMBER
T-R3
TS3
SU1
TS3
SU1
ALBUEN MEMBER
T-R2
Brackish-marine embayment
deposits in south are replaced by
sandy heterolithics towards north
MFS2
TS2
GULE HORN
FM.
Stacked tide-dominated to wave-
influenced pro-delta to delta-
platform heterolithic deposits
T-R1
ELIS BJERG MEMBER
T-R1
Contemporaneous foreshore-
shoreface sandstone and
brackish mudstone deposits
MFS1
MFS1
FSa
RÆVEKLØFT
FM.
195.3
TS1
TS1
Alluvial-lacustrine complex
deposits
KAP STEWART GROUP
Fig. 2. Lithostratigraphic sub-division of the latest Sinemurian/Pliensbachian - Toarcian/Aalenian Neill Klinter Group,
T-R sequences and key surfaces defined in this study (modified from Dam & Surlyk, 1998; Surlyk, 2003 and references
therein). Red lines mark subaerial unconformities (SU) and blue lines selected transgressive (TS) or flooding surfaces (FS).
of crystalline basement rocks from the present-
day Liverpool Land and from an area further east;
a land probably then attached to the present Jan
Mayen microcontinent (e.g. Mjelde et  al ., 2008;
Breivik et al ., 2012) and from hinterland areas in
the west and north-north-west (Fig. 1). The basin
probably extends further south of the Scoresby
Sund, but is presently covered by early Cenozoic
basalts (Fig.  1). The paralic environment was
drowned in the Aalenian-Bajocian and the basin
became dominantly open marine at the onset of
renewed rifting in the Middle Jurassic. The
Sortehat Formation (Koppelhus & Hansen, 2003;
Surlyk, 2003) of the Neill Klinter Group has not
been included in the present study, as this
Formation is considered to represent an open-
marine environment, a depositional setting very
different from the rest of the Neill Klinter Group.
3 0 m
Fig. 3. The well exposed Neill Klinter Group succession
along the western side of Hurry Inlet in eastern Jameson Land,
East Greenland (a view towards north of locality S4) (photo A.
Martinius). The dark stratigraphic levels are Palaeogene dol-
erite intrusives. For position of locality see Fig. 4.
Search WWH ::




Custom Search