Moose River Basin: geology and mineral potential - Geology Ontario

Mesozoic Palynology
of England (Kemp 1968, 1970; Laing 1976). Its first appearance characterizes
the base of the Middle Albian palynologic Subzone IIA of the Atlantic Coastal
Plain (Doyle and Robbins 1977), and it occurs rarely in the late Middle Albian
basal Cadotte Member of the Peace River Formation (Singh 1971). Further
more, the occurrences of Cicatricesisporites patapscoensis and Cicatricosisporites
subrotundus define the base of Subzone IIB of the Atlantic Coastal Plain
(Brenner 1963) which is now believed to be Middle and early Late Albian in age
(Doyle and Robbins 1977). Thus the balance of evidence indicates a late Middle
Albian age for the Tigrisporites-Trilobosporites humilis zone.
Impardecispora purverulenta-Cicatricosisporites annulatus Interval Zone
This zone occurs between 39 m and 41 m in drillhole 75-05 (see Figure 2.8)
and may also be represented by impoverished assemblages in drillhole 75-06
between 54 m and 124 m.
The 7. purverulenta-C. annulatus zone is marked by the local range tops of
the following species:
Appendicisporites problematicus (Burger) Singh* (Plate 4, fig.21,22)
Biretisporitespotoniei Delcourt and Sprumont (Plate l, fig. 14)
Camarozonosporites insignis Norris (Plate 6, fig. 9-11)
441 Cicatricosisporites-1 (Plate 3, fig. 19-22)
Clauatipollenites hughesii Couper (Plate 8, fig. 8-15)
Concauissimisporites sp. cf. C. punctatus (Delcourt and Sprumont) Brenner
(Plate l, fig. 10)
Coptospora sp. cf. C. striataDettmann (Plate 7, fig. 14-23)
Crybelosporites brenneri Playford (Plate 6, fig. 18-20)
Cupuliferoidaepollenites minutus (Brenner) Singh (Plate 11, fig. 2,3)
Densoisporites sp. cf. D. perinatus Couper (Plate 6, fig. 13,17)
424Distaltriangulisporites-l (Plate 2, fig. 14-17)
Distaltriangulisporitesperplexus (Singh) Singh* (Plate 2, fig.23)
Eucommiidites minor Groot and Penny (Plate 8, fig. 16-19)
430 Exesipollenites-1 (Plate 8, fig. 2,3)
442 Fungus-1 (Plate 12, fig. 1-4)
Klukisporites sp. cf. K. areolatus Singh (Plate 3, fig. 1-3)
453 Neoraistrickia-1 (Plate 2, fig. 3,4)
426 Parvisaccites-1
444Phimopollis-l (Plate 11, fig. 6-8)
Platysaccus megasaccus Brenner (Plate 10, fig. 7,8)
450 Pristinuspollenites-2 (Plate 8, fig. 23-32)
Rugubivesiculites reductus Pierce* (Plate 10, fig. 9-12)
434 Trilobosporites-1 (Plate 5, fig. 20)
Those species marked * may occur higher (see next section).In addition the
following species appear to be restricted to this zone:
Appendicisporites sp. cf. A. potomacensis Brenner (Plate 4, fig. 8)
Aratrisporites ocellatus Hedlund and Norris (Plate 8, fig. 21)
425Araucariacites-l (Plate 8, fig. 1)
432 Callialasporites-2 (Plate 8, fig. 22)
Cicatricosisporites annulatus Archangelsky and Gamerro (Plate 3, fig. 12)
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