Alaska: Geology and paleontology (Google eBook)

Front Cover
Doubleday, Page, 1904 - Alaska
0 Reviews
  

What people are saying - Write a review

We haven't found any reviews in the usual places.

Common terms and phrases

Popular passages

Page 162 - Miocene, which is now regarded as of the age of the upper Eocene. The species described in this paper as new are in various ways allied to forms characterizing this horizon, and I do not hesitate to refer this collection to the upper Eocene. The Kenai beds were studied by Mr. Stone...
Page 26 - In addition to these basalts, the cherts are associated with diabase and gabbro, and in the southern Kenai Peninsula dunite occurs with the cherts. Besides the basic igneous rocks, the cherts are cut by dykes of dacite porphyry. Palache makes the following statements concerning these rocks: With the exception of the dike rocks, this section bears an altogether extraordinary similarity in structure and lithologic character to the radiolarian cherts and associated igneous and clastic rocks of the Franciscan...
Page iii - Volume III: Glaciers and Glaciation. By Grove Karl Gilbert. Pages 231, with 17. plates and 1 map. 1993. Volume IV : Geology and Paleontology. By BK Emerson, Charles Palache, William H. Dall, EO Uirica, and FH Knowlton.
Page 26 - Emerson 6 says: The series is cut by a group of conspicuous light-colored porphyry dikes, standing nearly vertical, parallel, and 20, 10, 50, and 60 feet in width, respectively. Under the microscope these dikes proved to be much altered dacite-porphyries, showing phenocrysts of embayed quartz, acid plagioclase, much altered to calcite and kaolin, and occasional orthoclase in a granular i granophyric groundmass of quartz and feldspar.
Page 102 - ... him as follows, the number preceding each note being that assigned the locality in our record book.1 3373. Beds near the camp on the eastern side of Chichagof Cove, belonging to what Dr. Palache has designated on his sketch chart as the ' upper beds ' of the Stepovak series. (See pages 75 and 77.) 3374. From the west headland of Chichagof Cove, beds similar to those of 3373. 3375. From the east side of West Cove, the beds belonging to the upper series. 3376. From the hill above the camp, the...
Page 108 - Hal sinus is deep and free from the pallial line for most of its length below. The hinge as far as observable is that of Spisula or Cymbophora. Spisula sp. Localities. Upper beds, 3375 and 3376. This species, though represented by very inferior specimens, is obviously more convex, more trigonal, and had a heavier shell than S.
Page 102 - Mower' series of Dr. Palache, near a dike. (See page 74.) 3378. From the breccia beds of the same lower series as 3377, on the slope of Chichagof Peak. That some difference in age exists between the beds of the lower and upper series is obvious, but that this difference involves a faunal difference is not so certain since several of the species found in the lower beds were also collected from the upper beds, and the total number from the lower beds is too small to admit of any valuable comparison...
Page 101 - ... and intrusions of lava, extends to the eastward, being found in various localities along the north shore of Popof Island immediately eastward of Unga, where the writer obtained fossils in 1874, and where Mr. Kincaid of the Harriman party also collected a number of specimens, to be discussed later. The only representative of the Eocene epoch known in Alaska previous to the date of the Harriman Expedition was the Kenai Series, which had been referred by Heer to the Miocene and by others to the...
Page 162 - Juglans acuminata was found by lleer at Port Graham also, though first described from the European Miocene. Corylus macquarrii has quite a wide distribution, but is especially abundant in Alaska. It has also been reported from the Fort Union beds of Montana and British Columbia, and doubtfully from the Laramie. Alnus corylifolia has been reported from Cook Inlet. Ulmus braunii, described from the Swiss Miocene originally, has been reported from Kamloops, British Columbia, in strata of probably Eocene...

Bibliographic information