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 Unpublished MSc.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 19.9MB
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
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Geological Sciences Program, University at Albany