Sample Detail of
Sample: Sample No. DW 8788
Locality: Field No. 6779--10
Description: Deacon West Rock Section, Section 11, T 25 N., R. 21 E,, Black River Quad. Alaska (Megafossil Examination). Rock is a brecciated sandy dolomite. For diagram illustrating this section see Sheet 15 of GMC Report 465 (Furer, L.C., and Amoco Oil Co., 2019, Data compilation of the 1972 field party, southeast Brooks Range and Fort Yukon, Alaska; Vol 2: Alaska Division of Geological & Geophysical Surveys Geologic Materials Center Data Report 465, 10 p., 33 sheets, scale 1:250,000. https://doi.org/10.14509/30310).
Location: Alaska Quadrangle: Black River
Township&Range: 25 N 21 E/ Section: 11
Lat.: 66o59'45 " Long.: 143o02'00 "
Reference
Title: Appendix B: Paleontology data, in Furer, L.C., Fehlman, R.H.,Taylor, A.M>, Self, G.W. and Amoco Oil Co., Data compilation of the 1971 field party, southeast Brooks Range and Fort Yukon, Alaska; Vol. 1.. GMC Data Report 464B ,  1971
Report by: F. C. Furer , and others
Age: No Data (none given)
Comment:Discussion: The sequence is supratidal to shallow subtidal tn origin. Deacon Rock West Section: The Deacon Rock West Section is well-exposed along the north river bank. Attitude of the rocks is obscure, believed to be dipping about 30 degrees west consististly. The section is plotted with samples located at horizontal distances but could be corrected to uniform dip. Rocks are dolomitic limestones, nonfosssiliferous, and range from sandy to clean micrite with stromatolites and laminar fenestrae with oolitically-coated pellets. Absence of normal marine fauna, dolomitization, stromatolites, and oolitic pellets indicate shallow sub-tidal to supra-tidal with probable restricted circulation, probably back reef lagoon or bay. Possible minor oil seep located near Deacon Rock. Furer, L.C., and Amoco Oil Co., 2019, Appendix B: Paleontology data, in Furer, L.C., Fehlmann, R.H., Taylor, A.M., Self, G.W., and Amoco Oil Co., Data compilation of the 1971 field party, southeast Brooks Range and Fort Yukon, Alaska; Vol 1: Alaska Division of Geological & Geophysical Surveys Geologic Materials Center Data Report 464B. https://doi.org/10.14509/30394 (p. 20-21)