Upper Devonian Echinoderm Debris Beds with Graded Texture, District of Mackenzie, Northwest Territories

1973 ◽  
Vol 10 (4) ◽  
pp. 519-528 ◽  
Author(s):  
W. S. MacKenzie
Keyword(s):  
Northwest Territories ◽  
Black Shale ◽  
Middle Devonian ◽  
Skeletal Remains ◽  
Upper Devonian ◽  
The South ◽  
South Side ◽  
Local Origin ◽  
Mackenzie River

A sequence of Upper Devonian echinoderm debris beds with graded texture, interbedded with shale, overlies the Middle Devonian Ramparts Formation in the subsurface at McDermott Canada GCO South Maida Creek G-56 well on the south side of Mackenzie River near Carcajou Ridge.The interval of echinoderm debris can be divided into thick 2- to 7-ft (0.6- to 2.1-m) beds of graded skeletal remains lacking shale, and thinner intervals from 1 to 2 ft (0.3 to 0.6 m) thick of graded skeletal remains with interbedded black shale. The echinoderm beds, not present in the subsurface at nearby wells, are probably of local origin. Similar beds of echinoderm debris with graded texture, also of probable local origin, crop out at Powell Creek in the Mackenzie Mountain foothills.

An enigmatic blastozoan echinoderm fauna from central kentucky

2009 ◽  
Vol 83 (5) ◽  
pp. 739-749 ◽  
Author(s):  
Colin D. Sumrall ◽  
Carlton E. Brett ◽  
Troy A. Dexter ◽  
Alexander Bartholomew
Keyword(s):  
North America ◽  
Northwest Territories ◽  
Middle Devonian ◽  
Fossil Record ◽  
Foreland Basin ◽  
Late Ordovician ◽  
Upper Devonian ◽  
Range Extension ◽  
First Report ◽  
Appalachian Foreland

A series of small road cuts of lower Boyle Formation (Middle Devonian: Givetian) near Waco, Kentucky, has produced numerous specimens of three blastozoan clades, including both “anachronistic” diploporan and rhombiferan “cystoids” and relatively advanced Granatocrinid blastoids. This unusual assemblage occurs within a basal grainstone unit of the Boyle Limestone, apparently recording a local shoal deposit. Diploporans, the most abundant articulated echinoderms, are represented by a new protocrinitid species, Tristomiocystis globosus n. gen. and sp. Glyptocystitoid rhombiferans are represented by isolated thecal plates assignable to Callocystitidae. Three species of blastoids, all previously undescribed, include numerous thecae of the schizoblastid Hydroblastus hendyi n. gen. and sp., the rare nucleocrinid Nucleocrinus bosei n. sp., and an enigmatic troosticrinid radial. The blastoid Nucleocrinus is typical for the age; however, the callocystitid, schizoblastid, and protocrinitid are not. Hydroblastus is the oldest known schizoblastid. Middle and Upper Devonian callocystitids have been previously reported only from Iowa and Michigan USA with unpublished reports from Missouri USA and the Northwest Territories, Canada. This occurrence is thus the first report of a Middle Devonian rhombiferan from the Appalachian foreland basin. Tristomiocystis is the first known protocrinitid in North America and the only protocrinitid younger than Late Ordovician. This occurrence thus represents a range extension of nearly 50 million years for protocrinids. This extraordinary sample of echinoderms in a Middle Devonian limestone from a well-studied area of North America highlights the incompleteness of the known fossil record, at least in fragile organisms such as echinoderms.

Unusual Occurrence of the Brook Stickleback (Culaea inconstans) in the Mackenzie River, Northwest Territories

1972 ◽  
Vol 29 (11) ◽  
pp. 1655-1656 ◽  
Author(s):  
M. R. Falk
Keyword(s):  
Northwest Territories ◽  
Red River ◽  
The South ◽  
Culaea Inconstans ◽  
Resident Population ◽  
Great Slave Lake ◽  
Unusual Occurrence ◽  
South Shore ◽  
Brook Stickleback ◽  
Mackenzie River

Two specimens of the brook stickleback (Culaea inconstans) were taken in the mouths of Pierre and Tsital Trien creeks near Arctic Red River on the Mackenzie River during 1971. Previous most northerly published records were from the south shore of Great Slave Lake. The specimens may have been carried downstream by spring floods and may not represent a resident population.

XXVIII.—On the Presence of Tetrads of Resistant Spores in the Tissue of Sporocarpon furcatum Dawson from the Upper Devonian of America

1925 ◽  
Vol 53 (3) ◽  
pp. 597-601 ◽  
Author(s):  
R. Kidston ◽  
W. H. Lang
Keyword(s):  
New York ◽  
North America ◽  
Black Shale ◽  
Black Shales ◽  
Upper Devonian ◽  
The South ◽  
Large Area ◽  
Lower Carboniferous ◽  
Red Sandstone ◽  
Western Border

The deposits of the Devonian period over a large area in the interior of North America to the south of the great lakes are known to be wholly of marine type and to have continued those of the Silurian period. They were formed in a great gulf open to the south. Along the western border of this gulf shore-deposits and, during Upper Devonian times, deposits of Old Red Sandstone type were accumulated, while in the middle of the gulf the resulting rocks were limestones and shales. In Ohio, following on a narrow band of what is regarded as Oriskany Sandstone (Lower Devonian), the Corniferous limestone and some local representatives of the Hamilton formation represent the Middle Devonian. Above this comes a great mass of black shale, which here represents the whole Upper Devonian and may continue up into black shales of the Lower Carboniferous. A black shale at the base of the Upper Devonian rocks has an extensive range in the central region of North America, being represented by the Huron shale in Canada and the Genessee shale in New York. Drifted land plants from the coast of the gulf, or from islands in it, have been found in the black shale and also in the underlying Corniferous limestone, and some other fossils are commonly spoken of as Algæ but have afforded little or no botanical information.

IV.—The Devonian Rocks of Cornwall

1904 ◽  
Vol 1 (12) ◽  
pp. 587-591
Author(s):  
W. A. E. Ussher
Keyword(s):  
Middle Devonian ◽  
Lower Devonian ◽  
Upper Devonian ◽  
The South ◽  
Ample Evidence ◽  
The North

Sedgwick and Murchison, the Rev. D. Williams, and Dr. Holl, taking the Plymouth limestones as a middle division, placed them below the rocks to the south and above those to the north. The prevalent southerly dips of schistosity were regarded as ample evidence of a downward succession proceeding northward.The Staddon grits and other Lower Devonian rocks were thus placed above the Middle Devonian, and the slates in which I have at various times since 1892 found Upper Devonian fossils (between Menbeniot and St. Budeaux) were relegated to a position below the Middle Devonian.

On ulug oglum agrïp yok bolča in the Bilgä Kagan Inscription

2020 ◽  
Vol 73 (4) ◽  
pp. 539-550
Author(s):  
Li Yong-Sŏng ◽  
Park Won Kil
Keyword(s):  
The South ◽  
South Side

AbstractThis paper attempts to give new explanation for the expression agrïp yok bol- occurring in 9th line of the south side of the Bilgä Kagan Inscription. After a thorough survey of former research and several Chinese sources, the authors came to the conclusion that this expression must be a euphemistic expression for being beheaded in a battle. The authors found also that kog säŋün was Guo Yingjie 郭英傑. In sum, the sentence in question is to be read as ulug oglum agrïp yok bolča kog säŋünüg balbal tikä bertim ‘When my oldest son died of a disease, I readily erected General Kog as a balbal (for him).’ The expression agrïp yok bol- is to be regarded as a euphemistic expression for being beheaded in a battle.

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