Geology of the Buckfield and Dixfield Quadrangles in Northwestern Maine

Guidebook to field trips in southern Maine; 57th meeting, October 8-10, 1965, held at Bowdoin College: Trip

Geology of the Salt Lake Area, Oahu, Hawaii

ABSTRACT: A series of pyroclastic eruptions and one lava flow, all of melilitenephelinite composition, were produced in the environs of present-day Salt Lake, Oahu, Hawaii, beginning about 500,000 years ago and terminating more than 100,000 years ago. The age of the flow has been dated by a K40/ A40 method at 400,000 years to 470,000 years. The earliest eruptions took place at a time of higher sea levels than at present, and their products are water-laid. Later eruptions, including the major ones from Salt Lake Crater and Makalapa Crater, took place at a time of lower sea levels than at present, and their products are air-laid. Sufficient time elapsed between individual eruptions to allow for erosion of portions of the earlier cones, to deposit silt and gravel, or to develop a soil prior to a subsequent eruption. The pyroclastics are medium- to fine-grained, lithic-vitric tuffs and contain, in addition to juvenile material, a considerable quantity of particles of older rocks-volcanic and sedimentary, as well as ultramafic. The youngest deposits of tuff are unconformably truncated by reef and limestone which have been correlated with rocks dated by a Th23o/UZ38 method at 90,000 to 140,000 years

Reconnaissance bedrock geology of the Livermore [15-minute] quadrangle, Maine

Maine Geological Survey, Open-File Map 78-19https://digitalmaine.com/mgs_maps/1301/thumbnail.jp

Reconnaissance bedrock geology of the Norridgewock quadrangle, Maine

Maine Geological Survey, Open-File Map 78-17https://digitalmaine.com/mgs_maps/1298/thumbnail.jp

Reconnaissance bedrock geology of the Norridgewock [15-minute] quadrangle, Maine

Maine Geological Survey, Open-File Map 78-17https://digitalmaine.com/mgs_maps/1298/thumbnail.jp

The geology of Mount Blue State Park

Maine Geological Survey (Department of Economic Development), Bulletin 17 (State Park Geologic Series 3). Popular guide to park geology, geologic history, objects of geologic interest.https://digitalmaine.com/mgs_publications/1036/thumbnail.jp

The geology of Mount Blue State Park

Maine Geological Survey (Department of Economic Development), Bulletin 17 (State Park Geologic Series 3). Popular guide to park geology, geologic history, objects of geologic interest.https://digitalmaine.com/mgs_publications/1036/thumbnail.jp

Geologic maps of the Kingfield and Anson quadrangles, Maine

Maine Geological Survey, Geologic Map GM-7https://digitalmaine.com/mgs_maps/1307/thumbnail.jp

Structure and stratigraphy across the Hackmatack Pond Fault, Kennebec and Waldo Counties, Maine

Maine Geological Survey, Open-File Report 96-2https://digitalmaine.com/mgs_maps/1225/thumbnail.jp

Reconnaissance bedrock geology of the Dixfield [15-minute] quadrangle, Maine

Maine Geological Survey, Open-File Map 78-15https://digitalmaine.com/mgs_maps/1300/thumbnail.jp