331095 research outputs found
Sort by
Pillow basalt, Canada Falls volcanics
Pillow basalt in the Canada Falls volcanics of the Frontenac Formation (Silurian). 1: Pillows are slightly flattened and show necking on their left sides, rounding on their right sides, which indicates topping to the right (southeast). 2: Ash layers above pillows contorted by slumping Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36867/thumbnail.jp
Shear bands, Thasher Peaks fault.
Shear bands in rocks of the Seboomook Group. Evidence for the right-lateral Thrasher Peaks Fault. C-bands are oriented slightly inclined from left to right. S-bands are steeper. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36878/thumbnail.jp
Bedding and cleavage, Frontenac Formation
Bedding in impure sandstone and thin slate, Frontenac Formation. Near vertical graded beds top right (SE). Prominent cleavage dips NW, refracts from shallower near base of sand to steep in dark slate top of bed. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36904/thumbnail.jp
Pillow basalt, Ireland Pond assemblage
Pillow baslt of the Ireland Pond assemblage (Hibbard and Hall, 1992). Approximate location. 1: Stephen Hall. 2: Robert Neuman, Rbert Marvinney 3: pillow basalt Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36931/thumbnail.jp
Wells Beach, post harbor dredge
Wells Beach after the harbor dredge in December 2000. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36941/thumbnail.jp
Conglomerate, Trout Valley Formation
Conglomerate at the base of the Devonian Trout Valley Formation. Most of the cobbles are rhyolite. Last image shows GSM group on fieldtrip. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36960/thumbnail.jp
Sandstone and conglomerate, Trout Valley Formation.
Sandstone and conglomerate layers in the lower section of the Devonian Trout Valley Formation. Last image shows black chert nodules in sandstone (left center). Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36965/thumbnail.jp
Mayflower Hill Formation
Layered metasandstone and schist of the Mayflower Hill Formation (Vassalboro Group). Graded beds show topping direction to the right (SE). Glacial striations are prominent on the flat outcrop surface. 1: light sandstone beds and dark schist. Striations from upper left to lower right. 2: view parallel to striations. 3: vertical view. Thin bedding top to bottom. Striations from upper left to lower right. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/36970/thumbnail.jp
Sandy River bank erosion
Erosion of the unconsolidated river bank of the Sandy River. Various mitigation efforts have been tried over the years, including riprap seen in some images. Several images show sand stockpiled on the inside of the river meander. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/37006/thumbnail.jp
Sandy River bank erosion
Erosion of the unconsolidated river bank of the Sandy River. Various mitigation efforts have been tried over the years, including riprap seen in some images. Several images show sand stockpiled on the inside of the river meander. Project Name: Marvinney Historical Photoshttps://digitalmaine.com/mgs_geologic_field_photos/37007/thumbnail.jp