ABSTRACT
Rocks of the Frozen Ocean Group outcrop in the Frozen Ocean
Lake-New
Bay Pond Area, Newfoundland, and are here divided into four
formations.
The Lewis Lake Formation forms the base of the Frozen Ocean Group,
and
is composed predominantly of mafic volcanic flows; this is
conformably
overlain by the Blue Star Formation which is entirely sedimentary
in
nature.
The Blue Star Formation is in turn conformably overlain.by the
Bursey
Point
Formation, which is a mixed volcanic and sedimentary unit. The top
of
the
Frozen Ocean Group is marked by the Lynx Pond Formation, a mixed
silicic-
and mafic-volcanic formation, with minor sedimentary
intercalations.
The Frozen Ocean Group is everywhere in fault contact with
structurally
underlying, medial to late Ordovician, rocks of the Shoal Arm
Group and
Point Leamington Formation: structural analysis of this fault zone
reveals
that the present juxtaposition is a result of an early Silurian
back-thrusting
event, although several later episodes of deformation have
modified the
original geometry. The back-thrusting event is believed to be a
result
of continued, post-Taconic convergence between the
Taconic-modified
margin
of North America, and the remaining, open part of the Appalachian
Ocean.
The later deformation episodes which have affected rocks of the
area
include
right-lateral strike-slip faulting associated with pull-apart
basin
formation,
upright regional folding,
batholith intrusion, and a second generation of dextral
strike-slip
faulting.
Kusky, T.M., 1985. Geology of the Frozen Ocean Lake - New Bay
Pond
area,
north-central Newfoundland. Unpublished MSc. thesis, State
University
of New York at Albany. 214 pp., +xii; 4 folded plates (maps)
University at Albany Science Library call number: SCIENCE
Oversize
(*) QE 40 Z899 1985 K88
Kusky MS thesis scanned
image
pdf
(11 MB)
Plate 1 - Geology
of the Frozen Ocean Lake - New Bay Pond area
(uncoloured outcrop map, scale ~1:15,840) - pdf file 19.5MB
Plate 2 -
Lineament interpretation map of the northwestern portion of the
Exploits Terrane, central Newfoundland
(uncoloured lineament map) -
pdf file 13MB
Plate 3 - Outline
geological map of the northern portion of the Exploits terrane
(uncoloured geological map)
- pdf file 3.7MB
Return to MS Theses completed in the
Geological
Sciences Program, University at Albany