...Figure 7. Bedrock geology map of central Maine (from Osberg et al. , 1985 ). The arrow indicates the epicentral location of the Searsport within the Mount Waldo granitic pluton. The Mount Waldo granitic pluton is outlined by a thick light line. This figure was provided by the State Geologist...

... of the Passagassawakeag Gneiss contact northeast of the Mount Waldo batholith is calculated to be 45°N to 55°N on the basis of gravity evidence. A sill-like tongue of high-density rocks related to the Bays-of-Maine complex has been postulated to extend under the Ellsworth Schist north from Mount Desert Island...

... and Tucker 1998 ) Mount Waldo granite, emplaced in the Coastal Maine Magmatic Province ( Fig. 1 , inset). The two major varieties of granite that constitute the Mount Waldo granite and their field relations are similar to the Second Fork Brook megacrystic syenogranite and the Northeast Margaree River...

...Figure 12. A , TiO 2 -versus-SiO 2 diagram for the Deer Isle enclaves (gray circles), granitic host rocks (open circles), and composite mafic dikes (black circles). B , TiO 2 -versus-SiO 2 diagram of Mount Waldo granitic host rocks (open circles) and a mafic dike (black circle). C , TiO 2...

... to Emplacement Fabrics . Kluwer Academic , Dordrecht , 95 – 112 . Callahan , C.N. & Markley , M.J. 2003 . A record of crustal-scale stress; igneous foliation and lineation in the Mount Waldo Pluton, Waldo County, Maine . Journal of Structural Geology , 25 , 541 – 555 . de Wall...

... rocks. Considering only the terrane immediately along the Maine coast, the high-δ 18 O zircon-bearing granite at Bucksport is older than the Mount Waldo pluton, Maine (371 ± 2 Ma; Stewart et al. 1995 ). The Mount Waldo granite is proposed to be a ‘cryptic’ mixed magma system ( Gibson et al. 2003...

... in the granite. Convection, driven by the thermal influx associated with magma replenishments, moved these crystals along different paths through the magma chamber before they accumulated in the granite. Gibson et al. (2003) reached a similar conclusion for the nearby Mount Waldo pluton. The plagioclase...

..., and therefore the National Park Service, was established there were twelve national parks that the National Park Service began to manage. Of these twelve parks, four had existing glaciers (Yosemite, Mount Rainier, Glacier, and Rocky Mountain), four had been extensively glaciated in the last ice age (Yellowstone...

.... 1979. The relation of stresses in granite and gneiss near Mount Waldo, Maine, to structure, topography and rockbursts. 20th Symp. Rock Mech., Austin, Tex, 1979 663–673. Lindner, E. N. & Halpern, J. A. 1977. In-situ stress; an analysis. In: Wang, F. D. #x0026; Clark, G. B. (eds.), Energy...

... (modified from Bradley et al., 2000 ). Box outlines the area of Figure 2 . mw—Mount Waldo pluton. Figure 2. Generalized geologic map of south-central Maine (modified from Osberg et al., 1985 ; Tucker et al., 2001 ; West and Cubley, 2006 ). With the probable exception of the Sennebec Pond fault...

... was then intruded by the resurgent c. 100 Ma steep-sided Shellenbarger granite pluton, which steepened the shear zone foliation. The pluton was overprinted by syn- to post-magmatic ∼NNE–SSW horizontal shortening; the same shortening was documented in several other Late Cretaceous syntectonic plutons in the Sierra...

... , D. H. W. Hutton & W. E. Stephens ), pp. 95 – 112 . Kluwer Academic Publishers . Callahan , C. N. & Markley , M. J. 2003 . A record of crustal-scale stress: igneous foliation and lineation in the Mount Waldo Pluton, Waldo County, Maine . Journal of Structural...

...-enriched orbicular diorite . Ann. Arbor Geochem. 2 : 167 – 175 . Gibson , D. ; Lux , D. R. ; and Choate , M. A. 2003 . Petrography of a “cryptic” mixed magma system: the Mount Waldo granite, coastal Maine . Atl. Geol. 39 : 163 – 173 . Hibbard , M. J. 1987 . Deformation...

..., METC/SP-79/3 , 174 p. Lee , F.T. , and Diehl , S.F. , 1989 , Geologic and geomechanical properties of the Mount Waldo granite, Maine :: Maine Geological Survey , 2 . 187 - 200 . Matejka , D. , and Janousek , K. , 1998 , Whole-rock geochemistry and petrogenesis...

... and protracted crystallization : Abstract V42A-05 presented at American Geophysical Union Fall Meeting 2009 , San Francisco, California , 14–18 December . Callahan , C.N. , and Markley , M.J. , 2003 , A record of crustal-scale stress: Igneous foliation and lineation in the Mount Waldo Pluton...

... than are mafic rocks according to the Goldich dissolution series. Stevenson et al. (2006) proposed granitic plutons as a source rock for microearthquakes throughout South Carolina. Also, the shallow earthquakes near Searsport, Maine ( Ebel, 2016 ), were located within the Mount Waldo pluton...

... in 1829. It is an epitome of conventional geological opinion. At the base of his sequence, Brongniart depicted a mass of granite forming the core of a mountain. Beside it were smaller masses of syenite and diorite. Overlying these igneous rocks were layers of gneiss, schist, and greywacke followed...

... of a “cryptic” mixed magma system—The Mount Waldo granite, coastal Maine . Atlantic Geology , 39 , doi: 10.4138/1178 . Ginibre C. Davidson J.P. ( 2014 ) Sr isotope zoning in plagioclase from Parinacota Volcano (northern Chile): Quantifying magma mixing and crustal contamination . Journal...