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GEOREF RECORD
Origin of the Blue Rocks block field and adjacent deposits, Berks County, Pennsylvania
Noel Potter and John H. Moss
Origin of the Blue Rocks block field and adjacent deposits, Berks County, Pennsylvania
Geological Society of America Bulletin (1968) 79 (2): 255-262
Origin of the Blue Rocks block field and adjacent deposits, Berks County, Pennsylvania
Geological Society of America Bulletin (1968) 79 (2): 255-262
Index Terms/Descriptors
Latitude & Longitude
Abstract
Blue Rocks is a half-mile-long block field on the south slope of Blue Mountain, 3 miles northeast of Hamburg, Pa. The block field consists of angular blocks, 4 inches to 20 feet long, of Tuscarora Quartzite of Silurian age. The blocks were derived from strongly jointed quartzite cliffs on Blue Mountain. The open block area is a small part of a much larger rubble deposit. The adjacent rubble deposits contain fine material in the interstices and are forested. Blue Rocks and the adjacent rubble deposits closely resemble solifluction sheets or terraces on the Seward Peninsula of Alaska. The Blue Rocks block field probably formed by solifluction or creep in the periglacial climate of the Wisconsin glaciation.
ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 79
Serial Issue: 2
Title: Origin of the Blue Rocks block field and adjacent deposits, Berks County, Pennsylvania
Pages: 255-262
Published: 1968
Text Language: English
Publisher: Geological Society of America (GSA),
Boulder, CO,
United States
Accession Number: 1968-050418
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N39°43'00" - N42°17'60", W80°31'60" - W74°40'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1968
