Results 91 to 100 of about 8,428 (209)
Revista Mexicana de Ciencias Geológicas, 2018 Sierra Agua Verde contains one of the most complete and best exposed sections known of inner-shelf miogeoclinal strata in Sonora, Mexico. Over 3,700 m of Neoproterozoic(?), Cambrian, Lower Ordovician, Upper Devonian, Mississippian, and Lower and Middle ...
John H. Stewart +6 more
doaj
88th Annual Meeting of the Meteoritical Society 2026: Abstracts
Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley +1 more source
Pennsylvanian bryozoans from the Cantabrian Mountains (northwestern Spain) [PDF]
, 2008 Bryozoans from six Pennsylvanian localities in the Cantabrian Mountains (northwestern Spain) are described. The faunas include 54 species, of which two are new, Streblotrypa (Streblotrypa) peculiaris sp. nov. and Bashkirella minor sp. nov.
Winkler Prins, C.F. +2 more
core
Energy GeoscienceThe Pennsylvanian unconformity, which is a detrital surface, separates the beds of the Permian-aged strata from the Lower Paleozoic in the Central Basin Platform.
Edwin I. Egbobawaye +5 more
doaj +1 more source
PRE-PENNSYLVANIAN STRATIGRAPHY OF NEBRASKA [PDF]
, 1934 Sioux quartzite, granite, and schistose metamorphic rocks have been recognized in the pre-Cambrian. The present irregularities, the basins and highs, on the pre- Cambrian surface are the result of erosion and a long structural history.
Lugn, Alvin Leonard
core
Pennsylvanian Stratigraphy of Eagle County, Colorado
Six regionally mappable units are deliniated in the Pennsylvanian strata that crop out in Eagle County, Colorado. The following existing names are redefined to apply to these formations: Molas, Beldon, McCoy, Jaque Mountain, Maroon and Weber.
Murray, Harrison Frank
core +3 more sources
Paleogeomorphology Affecting Early Pennsylvanian Floras in Rock Island County, Illinois
, 1980 Plant fossils preserved in basal Pennsylvanian rocks of western Illinois are significant because composition of many of the paleofloras differs from those of more commonly preserved and better studied coal swamp floras. Each Early Pennsylvanian (Namurian
Leary, Richard Lee
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Pennsylvanian Geology and Mineral Resources of West Central Indiana [PDF]
, 1951 Indiana Geological Survey Guidebook 5During the period of oil and gas development in the 1950s, many petroleum geologists became interested in Pennsylvanian stratigraphy in Indiana.
Esarey, Ralph E., Wier, Charles E.
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Pennsylvanian-Permian conodont succession from the Bird Spring Formation, southeastern California
, 1969 Thesis, (M.S.) Geological SciencesThe occurrence of conodonts in the pennsylvanian-Permian Bird Spring Formation of the Providence Mountains, San Bernardino County, California, is the first report of Carboniferous conodonts in California.
Law, Ben E.
core
Pennsylvanian Charophyta in Iowa [PDF]
, 1949 Charophyta are a group of small plants of doubtful systematic position. They occur abundantly in quiet clear fresh and brackish waters and are widely distributed geographically.
Thomas, Leo A.
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