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 Unpublished MSc.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
Return to MS Theses completed in the Geological
Sciences Program, University at Albany