Download Characteristics of the Mid-Carboniferous Boundary and by William E. Edmunds, Jane R. Eggleston(auth.) PDF

By William E. Edmunds, Jane R. Eggleston(auth.)

About The Product

Published by means of the yank Geophysical Union as a part of the Field journey Guidebooks Series.

within the northern Appalachians, the boundary among the Mississippian and Pennsylvanian structures falls inside a fancy sedimentary series unfold throughout a rapidly-subsiding depositional trough and an adjoining, extra reliable craton margin. Sediment resource parts lie in a more-or-less non-stop semicircle from southeast to north of the basin. moreover, the higher Mississippian-Lower Pennsylvanian series is interrupted by means of vast erosion relating to epeirogenic upwarping of the area. Biostratigraphically, the systemic boundary is put on the first prevalence of the floral shape Neuropteris pocahontas (D. White) of floral area four as outlined by means of learn and Mamay (1964). although, as a result of the common disconformable nature of the touch, the basal Pennsylvanian plant life is frequently more youthful.


Show description

Read Online or Download Characteristics of the Mid-Carboniferous Boundary and Associated Coal-Bearing Rocks in the Appalachian Basin: Morgantown, West Virginia to Chattanooga, Tennessee, July 19-27, 1989 PDF

Best west books

Frommer's Hawaii from $80 a Day

Frommer’s Hawaii from $80 an afternoon proves that you just don’t need to lay our a fortune on a ritzy inn to event the simplest of the islands. Meticulously researched by one of Hawaii’s so much famous newshounds, it is a trustworthy, updated, and finished consultant to the easiest offers within the Aloha kingdom. Our writer has scoured each inch of the islands individually, and she's chosen some of the best B&Bs, cottage and apartment leases, genuine mom-and-pop eating places, purchasing deals, and cheap after-dark enjoyable.

Frommer's Las Vegas with Kids (2007) (Frommer's With Kids)

Discover the main enjoyable and academic studies for children of every age in Sin urban. think it or no longer, each year approximately four million viewers visit Vegas with youngsters in tow! Las Vegas with youngsters is stuffed with really exact tips—right right down to which lodges supply cribs and rollaway beds and which eating places supply excessive chairs and youngsters' menus.

Enterprise & Innovation in the Pikes Peak Region

Company & Innovation within the Pikes top area” used to be the topic of the seventh Annual Pikes height nearby background Symposium. This ebook contains the learn provided on the symposium, in addition to a few supplemental assets that round-out a dialogue of the various options of the quarter. advancements in invention, trade, technological know-how, flight, tourism, crafts, arts, performing, therapeutic and neighborhood construction are explored within the chapters of this ebook.

Frommer’s Shortcut Kauai

Looked by way of many viewers because the most lovely island of Hawaii, Kauai is at the moment receiving an amazing variety of pleasure-seeking travelers, who take pleasure in its fauna, plants and different wonders of nature. This ShortCut advisor to Kauai, restrained to crucial evidence, covers either the attractions and the practicalities, and squeezes in a stunning quantity of ideas for accommodation, eating, sightseeing, sea activities, sea-bathing and rest.

Additional info for Characteristics of the Mid-Carboniferous Boundary and Associated Coal-Bearing Rocks in the Appalachian Basin: Morgantown, West Virginia to Chattanooga, Tennessee, July 19-27, 1989

Sample text

The depositional environment of strata near the boundary is equally controversial. For example, widespread deposits of orthoquartzite or quartz arenite have been interpreted as offshore bars, tidal channels, and barri e-r-:-bars of a mari ne envi ronment by Englund and Delaney (1966), Englund (1972), Ferm (1974b), Miller (1974), and Cecil and Englund (1985) or as distributary channels, braided streams, or delta lobes of a terrestrial environment (Donaldson and Shumaker, 1979; Houseknecht, 1980).

Bode (1958), Bouroz and others (1978) and Wagner (1982a) all look upon this break as a useful stratigraphic marker throughout the paleoequatorial belt of Carboniferous strata. In northwestern Georgia, compressionimpression floras have been collected at 35 localities from Pennsylvanian strata and at 3 localities from the Upper Mississippian Pennington Formation (Gillespie and Crawford, 1985). The systemic boundary between the Mississippian and Pennsylvanian Systems in Georgia has been placed, in the absence of biostratigraphic data, at the contact between the Pennington Formation and the Raccoon Mountain Member of the Gizzard Formation (Thomas and Cramer, 1979).

Green SHALE, v. dk. ,...... , 'l:t • ' • • co . SANDSTONE, fine grained. ,..... gray o DISCONFORMITY ~ SHALE. reddish ~ brown. -........ '• ';' : :. to fine grained. It. ' • , •• , . ' 1) dd ' ~75 ,. '" •• , SANDSTONE. : ;. gray :::c o J: o::> « # ~ , ' ~90--~~-"'" SHALE. very dk gray . iiiiiii..... COAL ~ CLAYSTONE. ' .. ~'". '.. ' ... edded CALCAREOUS 'SANDSTONE, white, x-bedded & SHALE} reddish brown to • green 65 Reddish gray. red-brown. brown, rea Greenish-gray, gray-green.

Download PDF sample

Rated 4.82 of 5 – based on 5 votes