Geology of the Arnold Pond quadrangle, Oxford and Franklin Counties, Maine

Open-File Report 68-121
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Abstract

The Arnold Pond quadrangle lies on the northwest limb of the boundary Mountain anticlinorium (Albee, 1961), a major northeast-trending fold that extends across northern New Hampshire, west-central Maine and adjacent Quebec. The anticlinorium is defined in a regional sense by the Taconic unconformity separating pre-Silurian rocks from the rocks of Silurian and Devonian age. In the western part of the Arnold Pond quadrangle this unconformity is folded and locally faulted. Within the anticlinorium is a thick and highly folded sequence of green salte and quartzite, black slate, mafic and felsic volcanic rocks, and graywacke dated in part as late Middle Ordovician (Harwood and berry, 1967). These pre-Silurian rocks are flanked to the northwest by calcareous slate and limestone, thin lenses of conglomerate, and well-bedded slate and quartzite of Late Silurian to Early Devonian Age. Because the complete section of rocks in the anticlinorium is not exposed in the Arnold Pond quadrangle, the interested reader is referred to the work of Hatch (1963) and Green (1964; in press) in northern New Hampshire; Albee and Boudette (in press), Boucot and others, (1964), Harwood (1966), and Harwood and Sealy, (1967) in west-central Maine; and Marleau (1957; 1959) in adjacent Quebec.

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Publication type Report
Publication Subtype USGS Numbered Series
Title Geology of the Arnold Pond quadrangle, Oxford and Franklin Counties, Maine
Series title Open-File Report
Series number 68-121
DOI 10.3133/ofr68121
Year Published 1967
Language English
Publisher U.S. Geological Survey
Description Report: 20 p.; 3 Plates: 19.51 x 41.92 inches or smaller
Country United States
State Maine
County Franklin County, Oxford County
Other Geospatial Arnold Pond quadrangle
Additional publication details