Lower Pennsylvanian

Lower Pennsylvanian

[′lō·ər ‚pen·səl′vā·nyən]
(geology)
The earliest epoch of the Pennsylvanian period of geologic time, beginning about 310,000,000 years ago.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Coarse grey sandstone and pebble conglomerate with plant debris and macrofossils, correlated with the Lower Pennsylvanian Lancaster Formation, is exposed on Barnaby Head (western side at Raspberry Cove; see Park et al.
The first articulated skeleton of Dendrerpeton acadianum (Temnospondyli, Dendrerpetontidae) from the Lower Pennsylvanian locality of Joggins Nova Scotia and a review of its relationships.
Alluvial fan and piedmont sedimentation in the Tynemouth Creek Formation (Lower Pennsylvanian) of southern New Brunswick.
The overlying Lower Pennsylvanian rocks consist of quartz sandstones, aluminum-rich clays, and thick coals, which indicate more humid conditions (Phillips and Peppers 1984; Cecil 1990; Miller and Eriksson 1999).
Sedimentary environments of the Lower Pennsylvanian Sharon Conglomerate near Akron, Ohio.
Monocylic Psaronius from the Lower Pennsylvanian of the Illinois Basin.
The Lower Pennsylvanian Massillon Sandstone has the longest history of usage; from the early 1800s to the present.
The earliest record of Notalacerta is an excellent long trackway from the Rockcastle Sandstone Member of the Lee Formation (Westphalian A, Lower Pennsylvanian) near Somerset, Kentucky (Lewis 1973; Chesnut et al.
Continental red-bed intervals comprise a significant proportion of the classic Lower Pennsylvanian (Langsettian) section at Joggins, Nova Scotia (Fig.