Depositional Environment of the Late Precambrian Fossil-Bearing rocks of Southeastern Newfoundland, Canada.Journal of the Geological Society of India, Vol.22,No.8,1981
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MISRA, S.B., (1981)

Depositional Environment of the Late Precambrian Fossil-Bearing rocks of Southeastern Newfoundland, Canada. 

Journal of the Geological Society of India, Vol.22,No.8,1981.
Precambrian fossils occuring as imprints of jelly fish (near hammer head),spindle shaped Hydrozoans and other forms Siliceous argillites (light coloured) with intercalated sandy beds (dark coloured) in the Freshwater Point Formation. Sharp contact between two consecutive graded units in the Cape Cove Formation Small scale cross stratification overlying the shales in the basal part of the St.John's Formation. Small scale slump folds on a weathered surface of the shales in the St.John's Formation.Pen for scale. Interbeds of shale and sandstone in the basal part of the St. John's Formation near Cape Race Point the picture with mouse pointer to get details about the picture

EXPLANATION OF FIGURE 2

2A. Precambrian fossils occurring as imprints of jelly fish (near hammer head), spindle shaped Hydrozoans and other forms, on the top surface of an argillite bed in the Conception Group near Mistaken Point.

2B. Siliceous argillites (light coloured) with intercalated sandy beds (dark coloured) in the Fresh-water Point Formation. The irregular sandstone layer is possibly the result of load casting.

2C. Sharp contact between two consecutive graded units in the Cape Cove Formation.

2D. Small - scale cross stratification overlying the shales in the basal part of the St. John's Formation.

2F.Interbeds of shale and sandstone in the basal part of the St. John's Formation near Cape Race.
Convolute bedding in the calcareous shales of the St. John's Formation. Flute casts in the greywackes of the Cape Cove Formation. Current direction from left to right. Photomicrograph of the Cape Cove greywacke showing rock fragments (top left) and quartz grains (centre) X 32(approx.) Photomicrograph showing a sharp contact between two consecutive graded beds in the Cape Cove Formation X 32(approx.) Photomicrograph showing internal organization in the silty shales in the St. John's Formation. Pyrite grains are arranged (bottom) along the bedding plabe X 32 (approx.) under crossed nicols. Photomicrograph of a thin calcareous layer showing cone-in-cone structure and stylolites in the St. John's Formation. X 32 (approx) under crossed nicols.

EXPLANATION OF FIGURE 3

3A. Convolute bedding in the calcareous shales of the St. John's Formation.

3B. Flute casts in the greywackes of the cape Cove Formation. Current direction from left to right. The scale is same as for 3A.

3C. Photomicrograph of the Cape Cove greywacke showing rock fragments (top left) and quartz grains (centre ) × 32 (approx).

3D. Photomicrograph showing a sharp contact between two consecutive graded beds in the Cape Cove Formation . × 32 (approx).

3E. Photomicrograph showing internal organization in silty shales in the St. John's Formation . Pyrite grains are arranged (bottom) along the bedding plane. ×32 (approx) under crossed nicols.

3F. Photomicrograph of a thin calcareous layer showing cone -in -cone structure and stylolites in the St. John's Formation . ×32 (approx.) under crossed nicols. of the present exposures (Misra, 1971). Although the palaeogeography of the Avalon Peninsula of Newfoundland is only vaguely known from the works of Rose (1952),

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