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Drook Formation

{{Infobox rockunit

| name = Drook Formation

| image =

| caption =

| type = Formation

| age = Ediacaran {{Geological range|579.88|574}}{{cite journal |last1=Fitzgerald |first1=Danielle M. |last2=Narbonne |first2=Guy M. |last3=Pufahl |first3=Peir K. |last4=Dalrymple |first4=Robert W. |title=The Mall Bay Formation (Ediacaran) and the protracted onset of the Gaskiers glaciation in Newfoundland, Canada |journal=Precambrian Research |date=June 2024 |volume=405 |pages=107369 |doi=10.1016/j.precamres.2024.107369|doi-access=free }}

| period = Ediacaran

| prilithology = Siliceous Siltstone{{cite web|url = https://www.gov.nl.ca/iet/files/88-01.pdf |title=GEOLOGY OF THE AVALON PENINSULA, NEWFOUNDLAND}}

| otherlithology = Sandstone, Tuff

| namedfor =

| namedby =

| region = Newfoundland and Labrador

| country = Canada

| coordinates =

| unitof =Conception Group{{Cite journal|url=https://www.academia.edu/download/41916560/Horizontal_surface_traces_from_the_Ferme20160202-3945-1jxueem.pdf|title=Horizontal Surface Traces from the Fermeuse Formation, Ferryland (Newfoundland, Canada), and their Place within the Late Ediacaran Ichnological Revolution|author1=A.G. Liu|author2=D. McIlroy|journal=Geological Association of Canada - Special Paper|issue=9|date=September 2014}}{{dead link|date=July 2022|bot=medic}}{{cbignore|bot=medic}}

| subunits = Clam Cove, Peter’s River, Biscay, Cape English, Torbay, Bauline Line and Broad Cove River Members

| underlies = * Briscal Formation

| overlies = Gaskiers Formation

| thickness = 770 m (2,526 ft)

| extent =

| area =

| map = Drook Formation map.svg

| map_caption =

}}

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 {{Ma|575.8|error=0.5}}.

Paleobiota

Like the other overlying and underlying formations, the Drook Formation represents a rare deep-marine paleoenviroment, {{cite journal |last1=Wood |first1=Donald A |last2=Dalrymple |first2=Robert W |last3=Narbonne |first3=Guy M |last4=Gehling |first4=James G |last5=Clapham |first5=Matthew E |title=Paleoenvironmental analysis of the late Neoproterozoic Mistaken Point and Trepassey formations, southeastern Newfoundland |journal=Canadian Journal of Earth Sciences |date=1 October 2003 |volume=40 |issue=10 |pages=1375–1391 |doi=10.1139/e03-048}} and preserves a few fossils, like the large Trepassia.{{cite web |title=Wayback Machine |url=https://www.gov.nl.ca/iet/files/mines-geoscience-publications-openfiles-gac-seg-mac-ft-guides-of-nfld-3320-ft-2015.pdf |website=www.gov.nl.ca}}

{{Paleobiota-key-compact}}

= Petalonamae =

class="wikitable" style="width:70%;"
Genus

!Species

!Notes

!Images

Charnia

|

  • C. masoni

|Sessile frondose organism.

|File:Charnia masoni 456.jpg

Charniodiscus?

|

  • Charniodiscus sp.

|Sessile frondose organism.

|File:Charniodiscus.png

Trepassia

|

  • T. wardae

|Sessile frondose organism.

|File:Trepassia wardae fossil.png

Vinlandia

|

  • V. antecedens

|Sessile frondose organism.

|File:Vinlandia.jpg

= Ivesheadiomorph =

class="wikitable" style="width:70%;"
Genus

!Species

!Notes

!Images

style="background:#FEF6E4;"|Ivesheadia{{cite journal |last1=Liu |first1=Alexander G. |last2=Mcilroy |first2=Duncan |last3=Antcliffe |first3=Jonathan B. |last4=Brasier |first4=Martin D. |title=Effaced preservation in the Ediacara biota and its implications for the early macrofossil record |journal=Palaeontology |date=May 2011 |volume=54 |issue=3 |pages=607–630 |doi=10.1111/j.1475-4983.2010.01024.x}}

|style="background:#FEF6E4;"|

  • Ivesheadia sp.

|style="background:#FEF6E4;"|Poorly preserved organism.

|style="background:#FEF6E4;"|

style="background:#FEF6E4;"|Blackbrookia

|style="background:#FEF6E4;"|

  • Blackbrookia sp.

|style="background:#FEF6E4;"|Poorly preserved organism.

|style="background:#FEF6E4;"|

See also

{{Portal|Earth sciences|Canada|Paleontology|}}

References

  • {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}

Category:Ediacaran Newfoundland and Labrador

Category:Geologic formations of Newfoundland and Labrador

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