Buen Formation

Cambrian paleogeography with the Buen Formation in orange

During the Cambrian, Greenland was located in the southern tropical to temperate region. The Buen Formation forms part of the southern shelf succession of the Franklinian Basin of North Greenland and the Canadian Arctic Islands. The formation, approximately 325 metres (1,066 ft) thick, consists of a lower, sand−dominated, member overlain by an upper member dominated by dark grey−green mudstones and siltstones in its type area in southern Peary Land. It thickens to around 700 metres (2,300 ft) in northern Peary Land where it comprises a mud−rich transitional succession into deep water trough deposits of the Polkorridoren Group. Dark grey to black mudstones form part of this transitional succession from the shelf to the slope. To the south they lie in faulted contact with pale dolomites of the underlying Portfjeld Formation, and to the north with bioturbated mudstones and sandstones of the Buen Formation.[4]

• Peel, John S., and Sebastian Willman. 2018. The Buen Formation (Cambrian Series 2) biota of North Greenland. Papers in Palaeontology 4. 381–432. Accessed 2018-08-07.
• Geyer, Gerd, and John S. Peel. 2011. The Henson Gletscher Formation, North Greenland, and its bearing on the global Cambrian Series 2-Series 3 boundary. Bulletin of Geosciences 86. 465–534. Accessed 2018-08-07.
• Conway Morris, Simon, and John S. Peel. 2008. The earliest annelids: Lower Cambrian polychaetes from the Sirius Passet Lagerstätte, Peary Land, North Greenland. Acta Palaeontologica Polonica 53. 137–148. Accessed 2019-02-14. Material was copied from this source, which is available under a Creative Commons Attribution 4.0 International License.
• Higgins, A.K.; N.J. Soper, and A.G. Leslie. 2000. The Ellesmerian and Caledonian Orogenie Belts of Greenland. Polarforschung 68. 141–151. Accessed 2018-08-07.