Drook Formation
Geologic formation In Canada
From Wikipedia, the free encyclopedia
The Drook Formation is a geologic formation in Newfoundland and Labrador. It preserves fossils dating back to the Ediacaran period. It contains a stratum dated to 575.8 ± 0.5 million years ago.[2]
TypeFormation
Unit ofConception Group[2]
Sub-unitsClam Cove, Peter's River, Biscay, Cape English, Torbay, Bauline Line and Broad Cove River Members[3]
| Drook Formation | |
|---|---|
| Stratigraphic range: Ediacaran [1] | |
| Type | Formation |
| Unit of | Conception Group[2] |
| Sub-units | Clam Cove, Peter's River, Biscay, Cape English, Torbay, Bauline Line and Broad Cove River Members[3] |
| Underlies | |
| Overlies | Gaskiers Formation[2][3] |
| Thickness | 770 m (2,526 ft) |
| Lithology | |
| Primary | Siliceous Siltstone[3] |
| Other | Sandstone, Tuff[3] |
| Location | |
| Region | Newfoundland and Labrador |
| Country | Canada |
| |
Paleobiota
Like the other overlying and underlying formations, the Drook Formation represents a rare deep-marine paleoenviroment,[4] and preserves a few fossils, like the large Trepassia.[5]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Petalonamae
Ivesheadiomorph
| Genus | Species | Notes | Images |
|---|---|---|---|
| Ivesheadia[5][6] |
|
Poorly preserved organism. | |
| Blackbrookia[5] |
|
Poorly preserved organism. | |
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