Unit Name: Watts Bight Formation
Unit Type: Lithostratigraphic
Rank: Formation
Status: Formal
Usage: Currently in use
Age Interval: Early Ordovician (488.3 - 471.8 ma)
Province/Territory: Newfoundland & Labrador

Originator: Smyth et al., 1981

Lithology:
Black, dark grey to grey, thick-bedded, thrombolitic and stromatolitic, grainy, bioturbated and stylonodular, argillaceous and dolomitic limestone interbedded with lesser dololaminites, chert is common; thick bedded intraclastic grainstones with lesser thrombolitic limestones dominate the top of the formation locally; in the north and locally in the south, the thrombolitic and stromatolitic carbonates form thick and extensive mound complexes; the limestones are replaced extensively from Daniel's Harbour north, and west of the Hare Bay Allochthon, by black to tan-grey, sucrosic dolostones displaying light grey, burrow- and fabricmottled textures (comp. Knight and James, 1988; comp. Knight and Cawood, 1991)

References:
Knight, I. and James, N.P., 1988. Stratigraphy of the Lower to lower Middle Ordovician St. George Group, western Newfoundland. Government of Newfoundland and Labrador, Department of Mines, Geological Survey of Newfoundland, Report 88-4, 48 pp. GS# NFLD/1776.
Smyth, W.R., Schillereff, H.S., and Dunford, W., 1981. Jacksons Arm southwest (12H/15SW). Map 81-110. Government of Newfoundland and Labrador, Department of Mines and Energy, Mineral Development Division, Open File 012H/15/0745. GS# 012H/15/0745.

Source: LEXICON - Newfoundland
Contributor: S.P. Colman-Sadd
Entry Reviewed: Yes
Name Set: Lithostratigraphic Lexicon
LastChange: 04 Feb 2009