Bedrock Geology of the Bath 1:100,000 Map Sheet, Coastal Maine

Acknowledgements

The senior author has worked in the area of the Bath 1:100,000 map sheet on and off since 1961. Field work during that time was supported by the Maine Geological Survey, and sincere thanks go to State Geologists John Rand, Robert Doyle, Walter Anderson, and Robert Marvinney for their encouragement and guidance. Thanks go to many colleagues for their stimulating discussions in the field and at meetings including the above mentioned State Geologists, Philip Osberg, Kost Pankiwskyj, Donald Newberg, David Stewart, Wallace Bothner, the late Olcott Gates, David West, and Mark Swanson. A warm thank you goes to all the owners who have kindly given permission to visit rock exposures on their properties. The (very) junior author thanks Dykstra Eusden and Charles Guidotti for sharing their geological knowledge of the Port Clyde vicinity. We thank Robert D. Tucker (Washington University) and John Aleinikoff for their important geochronological contributions, including unpublished results cited in the present paper. We gratefully acknowledge critical reviews and helpful comments of the original manuscript by David West and Wally Bothner, and the design, layout, editing and publication of this bulletin by Robert D. Tucker (Maine Geological Survey) who saw the project to completion.

References Cited

Ayuso, R. A., and Arth, J. G., 1997, The Spruce Head composite pluton: An example of mafic to silicic Salinian magmatism in coastal Maine, northern Applachians, in Sinha, A.K., Whalen, J. B., and Hogan, J. P. (editors), The nature of magmatism in the Appalachian orogen: Geological Society of America, Memoir 191, p. 19-43.

Barton, M., and Sidle, W. C., 1994, Petrological and geochemical evidence for granitoid formation; the Waldoboro Pluton Complex, Maine: Journal of Petrology, v. 35, no. 5, p. 1241-1274.

Berry, H. N., IV, and Hussey, A. M., II, 1998, Bedrock geology of the Portland 1:100,000 quadrangle, Maine: Maine Geological Survey, Open-File Map 98-1 (pdf format).

Berry, H. N., IV, and Osberg, P. H., 1989, A stratigraphic synthesis of eastern Maine and western New Brunswick, in Tucker, R. D., and Marvinney, R. G. (editors), Studies in Maine geology, Volume 2: Structure and stratigraphy: Maine Geological Survey, p. 1-32.

Berry, H. N., IV, Schoonmaker, A., and Guidotti, C. V., 2000, The Benner Hill sequence, in Yates, M. G., Lux, D. R., and Kelley, J. T. (editors), Guidebook for field trips in coastal and east-central Maine: New England Intercollegiate Geological Conference, 92nd annual meeting, University of Maine, Orono, Maine, p. 187-207.

Bickel, C. E., 1976, Stratigraphy of the Belfast quadrangle, Maine, in Page, L. R. (editor), Contributions to the stratigraphy of New England: Geological Society of America, Memoir 148, p. 97-128.

Bodine, M. W., Jr., 1965, Stratigraphy and metamorphism in southwestern Casco Bay, Maine, in Hussey, A. M., II (editor), Guidebook for field trips in southern Maine: New England Intercollegiate Geological Conference, 57th annual meeting, Bowdoin College, Brunswick, Maine, p. 57-72.

Boucot, A. J., 1973, Staurolite zone Caradoc (Middle-Late Ordovician) age, Old World province brachiopods from Penobscot Bay, Maine: Reply: Geological Society of America, Bulletin, v. 84, p. 1831-1834.

Boucot, A. J., Brookins, D., Forbes, W., and Guidotti, C. V., 1972, Staurolite zone Caradoc (Middle-Late Ordovician) age, Old World province brachiopods from Penobscot Bay, Maine: Geological Society of America, Bulletin, v. 83, p. 1953-1960.

Bradley, D. C., Tucker, R. D., Lux, D. R., Harris, A. G., and McGregor, D. C., 1998, Migration of the Acadian orogen and foreland basin across the Northern Appalachians: U. S. Geological Survey, Open-File Report 98-770, 79 p.

Brookins, D. G., and Hussey, A. M., II, 1978, Rb-Sr ages for the Casco Bay Group and other rocks from the Portland-Orrs Island area, Maine: Geological Society of America, Abstracts wih Programs, v. 10, no. 2, p. 34.

Caldwell, D. W., and Austin, M. B., 1957, Maine pegmatite mines and prospects and associated minerals: Maine Geological Survey, Mineral Resources Index No. 1, 43 p.

Cameron, E. N., Larabee, D. M., McNair, A. H., Page, J. J., Shainin, V. E., and Stewart, G. W., 1954, Pegmatite Investigations 1942-45, New England: U. S. Geological Survey, Professional Paper 255, 352 p.

Chayes, Felix, 1952, The finer grained calc-alkaline granites of New England: Journal of Geology, v. 60, p. 207-254.

Chunzeng, Wang, 2001, Nature and evolution of the Norumbega fault system in the Great Pond-Grand Lake Stream area, eastern Maine: Ph. D. dissertation, The City University of New York, 112 p.

Clark, R. G., and Lyons, J. B., 1986, Petrogenesis of the Kinsman Intrusive Suite: Peraluminous granitoids of western New Hampshire: Journal of Petrology, v. 27, p. 1365-1393.

Dale, T. N., 1907, The granites of Maine: U. S. Geological Survey, Bulletin 313, 202 p.

Eden, J. T., and Pavlik, R. K., 1996, Bedrock geology and tectonic history of the northern Georges Islands archipelago, Muscongus Bay, Maine: Geological Society of America, Abstracts with Programs, v. 28, no. 3, p. 50-51.

Elders, W. A., 1969, Zoned alkali feldspars from the Lincoln Sill syenite, Maine (summary): Geological Society of America, Abstracts with Programs, part 7, p. 271-273.

Eusden, J. D., Berkowitz, L., Eden, J., King, A., Mullens, B., and Pavlik, R., 1996, Bedrock geology between Port Clyde and Monhegan Island, Maine: Previously unmapped rocks of the St. Croix terrane: Geological Society of America, Abstracts with Programs, v. 28, no. 3, p. 52.

Faiia, A., 1996, Margarite after staurolite in the Yarmouth Island Member of the Cushing Formation, Casco Bay Group, Maine: Honors thesis, Bowdoin College, 20 p.

Fyffe, L. R., and Riva, J. F., 2001. Regional significance of graptolites from the Digdeguash Formation of southwestern New Brunswick, in Carroll, B.M.W. (editor), Current Research 2000: New Brunswick Department of Natural Resources, Minerals and Energy Division, Mineral Resource Report 2001-4, p. 47-54.

Grover, T., and Lang, H., 1995, Examination of a well-exposed sequence of garnet through sillimanite zone metamorphic rocks in Casco Bay, Maine, in Hussey, A. M., II, and Johnston, R. A. (editors), Guidebook to field trips in southern Maine and adjacent New Hampshire: New England Intercollegiate Geological Conference, 85th Annual Meeting, October 6-8, 1995, Brunswick, Maine, p. 195-210.

Guidotti, C. V., 1979, The bedrock geology of the Tenants Harbor 7½' quadrangle and a portion of the Friendship 7½' quadrangle, Maine: Maine Geological Survey, Open-File Report 79-16, 12 p. and map, scale 1:24,000.

Guidotti, C. V., 1989, Metamorphism in Maine: An overview, in Tucker, R. D., and Marvinney, R. G. (editors), Studies in Maine geology, Volume 3: Igneous and metamorphic geology: Maine Geological Survey, p. 1-17.

Hatheway, R. B., 1969, Geology of the Wiscasset quadrangle, Maine: Ph.D. dissertation, Cornell University, Ithaca, N.Y., 166 p.

Hitchcock, C. H., 1861, General report on the geology of Maine, in Preliminary report on natural history and geology: Maine Board of Agriculture, 6th Annual Report, p. 146-328.

Hitchcock, C. H., 1862, Second annual report on the geology of Maine: Maine Board of Agriculture, 7th Annual Report, p. 221-447.

Hussey, A. M., II, 1971a, Geologic map of the Portland quadrangle, Maine: Maine Geological Survey, Map GM-1, scale 1:62,500, 19 p. descriptive folder.

Hussey, A. M., II, 1971b, Geologic map and cross-sections of the Orrs Island 7½' quadrangle and adjacent area, Maine: Maine Geological Survey, Map GM-2, scale 1:24,000, 18 p. descriptive folder.

Hussey, A. M., II, 1971c, Reconnaissance bedrock geology of the Friendship quadrangle, Maine: Maine Geological Survey, Open-File Map 71-9, scale 1:24,000.

Hussey, A. M., II, 1985, The bedrock geology of the Bath and Portland 2° map sheets, Maine: Maine Geological Survey, Open-File Report 85-87, 82 p., 2 maps, scale 1:250,000.

Hussey, A. M., II, 1988, Lithotectonic stratigraphy, deformation, plutonism, and metamorphism, greater Casco Bay region, southwestern Maine, in Tucker, R. D., and Marvinney, R. G. (editors), Studies in Maine geology, Volume 1: Structure and stratigraphy: Maine Geological Survey, p.17-34.

Hussey, A. M., II, 1989, Geology of southwestern coastal Maine, in Anderson, W. A., and Borns, H. W., Jr. (editors), Neotectonics of Maine: Studies in seismicity, crustal warping and sea-level change: Maine Geological Survey, p. 25-42.

Hussey, A. M., II, 1992, The bedrock geology of the Westport 7½' quadrangle, Maine: Maine Geological Survey, Open-File 92-59, 9 p. with map, scale 1:24,000.

Hussey, A. M., II, Aleinikoff, J., and Marvinney, R., 1993, Reinterpretation of age and correlation between tectonostratigraphic units, southwestern Maine: Geological Society of America, Northeastern Section, Abstracts with Programs, v. 25, no. 2, p. 25.

Hussey, A. M., II, and Bothner, W. A., 1995, Geology of the coastal lithotectonic belt SW Maine and SE New Hampshire, in Hussey, A. M., II, and Johnston, R. A. (editors), Guidebook to field trips in southern Maine and adjacent New Hampshire: New England Intercollegiate Geological Conference, 85th Annual Meeting, October 6-8, 1995, Brunswick, Maine, p. 211-228.

Hussey, A. M., II, and Marvinney, R. G., 2002, Bedrock geology of the Bath 1:100,000 quadrangle, Maine: Maine Geological Survey, Geologic Map 02-152 (pdf format).

Jackson, C. T., 1837, First annual report on the geology of the State of Maine: Smith & Robinson, Printers to the State, Augusta, Maine, 128 p.

Jackson, C. T., 1838, Second annual report on the geology of the State of Maine: Luther Severance, Printer, Augusta, Maine, 168 p.

Jackson, C. T., 1839, Third annual report on the geology of the State of Maine: Smith & Robinson, Printers to the State, Augusta, Maine, 276 p.

Katz, F. J., 1917, Stratigraphy of southwestern Maine and southeastern New Hampshire: U. S. Geological Survey, Professional Paper 108, p. 165-177.

King, A. E., 1994, Bedrock and structural geology of the southern Georges Islands, Muscongus Bay, Maine (abstract): The Maine Geologist, Geological Society of Maine, newsletter, v. 20, no. 2, p. 11.

King, A. E., and Eusden, J. D., 1994, Geologic mapping of the Georges Islands, Muscongus Bay, Maine: Geological Society of America, Abstracts with Programs, v. 26, no. 3, p. 28-29.

Kirk, A. R., 1971, Petrology, structural geology, and metamorphism of the Boothbay Harbor area, Maine: M. S. thesis, State University of New York at Buffalo, 108 p.

Knight, D. R., and Gaudette, H. E., 1991, Geology and petrology of the Lincoln Sill and related rocks, coastal Maine, in Ludman, A. (editor), Geology of the coastal lithotectonic block and neighboring terranes, eastern Maine and southern New Brunswick: New England Intercollegiate Geological Conference, 83rd Annual Meeting, Queens College, City University of New York, Flushing, p. 323-337.

Lang, H. M., and Dunn, G. R., 1990, Sequential porphyroblast growth during deformation in a low-pressure metamorphic terrain, Orrs Island - Harpswell Neck, Maine: Journal of Metamorphic Geology, v. 8, p. 199-216.

Lord, E. C. E., 1900, Notes on the geology and petrography of Monhegan Island, Maine: American Geologist, v. 26, p. 329-347.

Ludman, A., 1987, Pre-Silurian stratigraphy and tectonic significance of the St. Croix belt, southeastern Maine: Canadian Journal of Earth Science, v. 24, p. 2459-2469.

Ludman, A., Lanzirotti, A., Lux, D. R., and Chunzeng, W., 1999, Constraints on timing and displacement of multistage shearing in the norumbega fualt system, eastern Maine, in Ludman, A., and West, D. P., Jr. (editors), Norumbega fault system of the northern Appalachians: Geological Society of America, Special Paper 331, p. 179-194.

Maine Mining Journal, Blanding, E. M., and Blanding, W. F. (editors), published weekly, 1880-1882, Bangor, Maine.

Marshak, S., and Mitra, G., 1988, Basic methods of structural geology: Prentice-Hall, Englewood Cliffs, New Jersey, 446 p.

McHone, J. G., 1996, Broad-terrane Jurassic flood basalts across northeastern North America: Geology, v. 24, no. 4, p. 319-322.

McHone, J. G., West, D. P., Jr., Hussey, A. M., II, and McHone, N. W., 1995, The Christmas Cove dike, coastal Maine: Petrology and regional significance: Geological Society of America, Abstracts with Programs, v. 27, no. 1, p. 67-68.

Moench, R. H., and Aleinikoff, J. N., 2002, Stratigraphy, geochronology, and accretionary terrane settings of two Bronson Hill arc sequences, northern New England: Physics and Chemistry of the Earth, v. 27, p. 47-95.

Morrill, P., 1955, Maine mines and mineral locations: Dillingham Natural History Museum, Naples, Maine, 45 p.

Neuman, R. B., 1973, Staurolite-zone Caradoc (Middle-Late Ordovician) age, Old World province brachiopods from Penobscot Bay, Maine: Discussion: Geological Society of America, Bulletin, v. 84, p. 1829-1830.

Newberg, D. W., 1979, Bedrock geology of the Waldoboro East and Waldoboro West 7½' quadrangles, Maine: Maine Geological Survey, Open-File Report 79-19, 16 p. and map, scale 1:24,000.

Newberg, D. W., 1984, Bedrock geology of the Gardiner 15' quadrangle, Maine: Maine Geological Survey, Open-File Report 84-8, 30 p. report and map, scale 1:62,500.

Osberg, P. H., 1988, Geologic relations within the shale-wacke sequence in south-central Maine, in Tucker, R. D., and Marvinney, R. G. (editors), Studies in Maine geology, Volume 1: Structure and stratigraphy: Maine Geological Survey, p. 51-73.

Osberg, P. H., and Guidotti, C. V., 1974, The geology of the Camden-Rockland area, in Osberg, P. H. (editor), Guidebook for field trips in east-central and north-central Maine: New England Intercollegiate Geological Conference, 66th Annual Meeting, October 12-13, 1974, Orono, Maine, p. 48-60.

Osberg, P. H., Hussey, A. M., II, and Boone, G. M., 1985, Bedrock geologic map of Maine: Maine Geological Survey, scale 1:500,000.

Osberg, P. H., Tucker, R. D., and Berry, H. N., IV, 1995, Is the Acadian suture lost?, in Hussey, A. M., II, and Johnston, R. A. (editors), Guidebook to field trips in southern Maine and adjacent New Hampshire: New England Intercollegiate Geological Conference, 85th Annual Meeting, October 6-8, 1995, Brunswick, Maine, p. 145-171.

Palache, C. A., 1934, A topaz deposit in Topsham, Maine: American Journal of Science, 5th series, v. 27, p. 37-48.

Pankiwskyj, K. A., 1976, Preliminary report on the geology of the Liberty 15' quadrangle and adjoining parts of the Burnham, Brooks, Belfast, and Vassalboro quadrangles in south-central Maine: Maine Geological Survey, Open-File Report 76-29, 8 p. and map, scale 1:62,500.

Pankiwskyj, K. A., 1996, Structure and stratigraphy across the Hackmatack Pond fault, Kennebec and Waldo Counties, Maine: Maine Geological Survey, Open-File Report 96-2, 15 p. report and map, scale 1:24,000.

Ruitenberg, A. A., and Ludman, A., 1978, Stratigraphy and tectonic setting of Early Paleozoic sedimentary rocks of the Wirral - Big Lake area, southwestern New Brunswick and southeastern Maine: Canadian Journal of Earth Science, v. 15, p. 22-32.

Shainin, V. E., 1948, Economic geology of some pegmatites in Topsham, Maine: Maine Geological Survey, Bulletin 5, 32 p.

Sidle, W. C., 1991, Reconnaissance bedrock geology of the Waldoboro Pluton Complex and other intrusive rocks in coastal Lincoln and Knox Counties, Maine: Maine Geological Survey, Open-File Report 91-3, 11 p. report and 2 maps, scale 1:24,000.

Sidle, W. C., 1992, Significance of pegmatites, aplites, and tourmaline veining in the Waldoboro Pluton Complex, Maine: Northeastern Geology, v. 14, nos. 2-3, p. 171-184.

Sidle, W. C., and Barton, M., 1992, Field relationships, petrology, structure, and intrusion history of the Waldoboro pluton granitoid complex, Maine, U.S.A.: Maine Geological Survey, Open-File Report 92-64, 20 p.

Stewart, D. B., 1998, Geology of northern Penobscto Bay, Maine: U. S. Geological Survey, Miscellaneous Investigations Series Map I-2551, scale 1:62,500, 2 sheets.

Swanson, M. T., 1992, Late Acadian transpressional deformation: Evidence from asymmetric boudinage in the Casco Bay area, coastal Maine: Journal of Structural Geology, v. 14, p. 323-341.

Swanson, M. T., 1995, Distributed ductile dextral shear strain throughout the Casco Bay area, in Hussey, A. M., II, and Johnston, R. A. (editors), Guidebook to field trips in southern Maine and adjacent New Hampshire: New England Intercollegiate Geological Conference, 85th Annual Meeting, October 6-8, 1995, Brunswick, Maine, p. 1-13.

Swanson, M. T., 1999a, Kinematic indicators for regional dextral shear along the Norumbega fault system in the Casco Bay area, coastal Maine, in Ludman, A., and West, D. P., Jr. (editors), Norumbega fault system of the northern Appalachians: Geological Society of America, Special Paper 331, p. 1-23.

Swanson, M. T., 1999b, Dextral transpression at the Casco Bay restraining bend, Norumbega fault zone, coastal Maine, in Ludman, A., and West, D. P., Jr. (editors), Norumbega fault system of the northern Appalachians: Geological Society of America, Special Paper 331, p. 85-104.

Thompson, W. B., Joyner, D. L., Woodman, R. G., and King, V. T., 1991, A collector's guide to Maine mineral localities (2nd edition): Maine Geological Survey, 104 p.

Tomascak, P. B., and Francis, C. A., 1995, Geochemistry and petrology of Permian pegmatites and granite in the Topsham-Brunswick area, in Hussey, A. M., II, and Johnston, R. A. (editors), Guidebook to field trips in southern Maine and adjacent New Hampshire: New England Intercollegiate Geological Conference, 85th Annual Meeting, October 6-8, 1995, Brunswick, Maine, p. 279-288.

Tomascak, P. B., Krogstad, E. J., and Walker, R. J., 1996, U-Pb monazite geochronology of granitic rocks from Maine: Implications for Late Paleozoic tectonics in the northern Appalachians: Journal of Geology, v. 104, p. 185-195.

Trefethen, J. M., 1937, The Lincoln Sill: Journal of Geology, v. 45, p. 353-380.

Tucker, R. D., Osberg, P. H., and Berry, H. N., IV, 2001, The geology of a part of Acadia and the nature of the Acadian orogeny across central and eastern Maine: American Journal of Science, v. 301, p. 205-260.

West, D. P., Jr., 1999, Timing of displacements along the Norumbega fault system, south-central and south-coastal Maine, in Ludman, A., and West, D. P., Jr. (editors) Norumbega fault system of the northern Appalachians: Geological Society of America, Special Paper 331, p. 167-178.

West, D. P., Jr., 2000, Bedrock geology of the southern part of the Washington quadrangle, Maine: Maine Geological Survey, Open-File Map 00-144, scale 1:24,000.

West, D. P., Guidotti, C. V., and Lux, D. R., 1995, Silurian orogenesis in the western Penobscot Bay region, Maine: Canadian Journal of Earth Science, v. 32, p. 1845-1858.

West, D. P., Jr., Lux, D. R., and Hussey, A. M., II, 1988, 40Ar/39Ar mineral ages from southwestern Maine: Evidence for Late Paleozoic metamorphism: Maritime Sediments and Atlantic Geology, v. 24, p. 225-239.

West, D., Lux, D. R., and Hussey, A. M., II, 1993, Contrasting thermal histories across the Flying Point fault, southwestern Maine: Evidence for Mesozoic displacement: Geological Society of America, Bulletin, v. 105, p. 1478-1490.

West, D. P., Jr., and Lux, D. R., 1993, Dating mylonitic deformation by the 40Ar-39Ar method; an example from the Norumbega fault zone, Maine: Earth and Planetary Science Letters, v. 120, nos. 3-4, p. 221-237.

West, D. P., Jr., and McHone, J. G., 1997, Timing of early Jurassic "feeder" dike emplacement, northern Appalachians: Evidence for synchroneity with basin basalts: Geological Society of America, Abstracts with Programs, v. 29, no. 1, p. 98.


Introduction   Central Maine sequence   Falmouth-Brunswick sequence   Casco Bay Group   East Harpswell Group   Fredericton sequence   Megunticook sequence   Benner Hill sequence   Sequence uncertain   Correlations   Intrusives   Structure   Metamorphism   Timing   Minerals   Acknowledgements   References  


Last updated on February 1, 2008