Report on Referred Fossils |
|
|
|
| Stratigraphic range: |
Permian and Triassic |
| Kinds of fossils: |
Coelenterates, byrozoans, brachiopods |
| Quadrangle or area: |
Sitka B-1 and Sumdum B-6 |
| Shipment No.: |
A-58-11 |
| Referred by: |
Loney, R. A.
|
| Report prepared by: |
Duncan, Helen
,
Dutro, J. Thomas, Jr.
|
| Date: |
04/04/1960 |
|
|
|
Summary This report is concerned with two collections (58ALy164 and 58ALy423) that were obtained from rocks considered to be of Triassic age in the field. N.J. Silberling's report February 25, 1959, indicated that these were to be turned over to Duncan along with three others (58ALy448, -448a, and -456), that contained fossils of "probable pre-Mesozoic age." After the collections in question were located this past winter, the three that you inquired about on July 15, 1956 [note by R.B. Blodgett: one would presume that 1959 was meant here, not 1956], were transferred to W.A. Oliver for study inasmuch as the fossils seemed to be early rather late Paleozoic types. Oliver's report of March 10, 1960, deals with these lots. In the remaining collections, evidence that confirms the Triassic field assignment was found in 58ALy164. A Permian brachiopod-bryozoan fauna occurs in lot 58ALy423. The hydrozoans, corals, and bryozoans were studied by Duncan. Dutro identified the brachiopods.
|
|
|
| User Note module to be added |
|
|
58ALy164
, Sitka
, Transmittal sheets of R.A. Loney, dated Nov. 6, 1958 provide following description: Limestone, dark gray, very fine grained, 1/2' to 1' beds, weathers lt. brownish gray & lt. gray-probably Triassic island outcrop-only fragments of fossils found. Coords. 5.98, 9.50. [Pybus Gambier Bays, Admiralty Island; coordinates: 5.98, 9.50. Limestone, dark gray, very fine grained, 1/2'-1' beds, weathers light brownish gray and light gray. Field assignment: probably Triassic (description from Duncan and Dutro E&R report of 4/4/60)]
|
|
|
fragments of thick shell with coarse prismatic shell
|
|
|
|
two broken and worn fragments of coral
|
|
|
|
Stromatomorpha, probably S. californica Smith
|
|
|
|
|
|
58ALy423
(19306-PC)
, Sumdum
, Transmittal sheets of R.A. Loney, dated Nov. 6, 1958 provide following description: Limestone, light gray & light brown, boulders & cobbles in a conglomerate lens intercalcited with basalt flows and breccias and green chert breccia-brachiopods chiefly-volcanics prob. Triassic. Coords: 2.94, 14.34. [Pybus-Gambier Bays, Admiralty Island; coordinates: 2.94, 14.34. Limestone, light gray and light brown, boulders and cobbles in a conglomerate lens intercalated with basalt flows and breccias and green chert breccia. Field assignment: volcanic probably Triassic. (description from Duncan and Dutro E&R report dated 4/4/60)]
|
|
|
|
|
|
|
|
|
Hexagonellid bryozoan, gen. and sp. indet.
|
|
|
|
Fistuliporoid bryozoans, indet.
|
|
|
|
Stenoporoid bryozoans, indet.
|
|
|
|
|
|
|
|
Fenestrate bryozoans, indet.
|
|
|
|
Rhomboporoid bryozoans, indet.
|
|
|
|
|
|
Spiriferoid brachiopod, indet.
|
|
|
|
|
|
|
|
Athyrid brachiopod, indet.
|
|
|
|
Rhynchopora sp. undet. (large)
|
|
|
|
|
|
Centronellid brachiopod, n. gen.
|
|
|
|
Brachiopod fragments, indet.
|
|
|
|
|
|
|