Fossil-Based Stratigraphy in the Merrimack Synclinorium, Central Maine
1976; Geological Society of America; Linguagem: Inglês
10.1130/mem148-p65
ISSN0072-1069
Autores Tópico(s)Geology and Paleoclimatology Research
ResumoAges from 17 new graptolite localities have made possible refinements in Silurian and Silurian-Devonian stratigraphy in the Kingsbury and Skowhegan quadrangles and indicate major facies changes in the Silurian metasedimentary rocks of central Maine. Northwest of the Currier Hill syncline, the observed sequence is: Sangerville Formation (upper Llandovery through lower Wenlock)—variably bedded meta-graywacke and pelite with minor polymict granule conglomerate, ribbon limestone, and carbonaceous pelite; Eddy Formation (lower Ludlow)—rusty weathering sulfidic carbonaceous pelite and non-carbonaceous quartzose sandstone and granule conglomerate; Brighton Formation [Silurian-Devonian(?)]—massive biotite-quartz granulite with minor calc-silicate granulite beds and pods (lower member) and thinly interbedded biotite-quartz granulite and...
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