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Showing 1 to 20 of 46 for “"syncline"”.
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Geology of the Lake Memphremagog syncline
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1961.
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Stratigraphy and structure of the Roach River syncline, Piscataquis County, Maine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1959.
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Middle Ordovician (Chazyan) conodont biostratigraphy and structural geology of the McMullin Syncline, Smyth County, Virginia
The McMullin syncline is located in Smyth County within the Valley and Ridge Province of southwestern Virginia. The syncline lies in a recess along the northern periphery of the Seven Springs-Pulaski thrust and consists of seven small fault blocks which are complicated by three generations of …
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Structural geology and stratigraphy at the junction of the curral anticline and the moeda syncline, Quadrilatero Ferrifero, Minas Gerais, Brazil
… and the upper limb deformed into the Moeda syncline to the south. In the south, the westward overturned Moeda syncline trends north -south, with both of the limbs strongly deformed. The western limb is folded into recumbent folds indicating a northerly transport direction. The eastern limb …
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Geology of the Millers Cove area, Roanoke, Craig and Montgomery counties, Virginia
… Cove Mountain anticline and Dragons Tooth syncline. To the southwest the anticline passes beneath the Pulaski fault. The extension of the anticline to the northeast is unknown but it may be continuous with the Broad Run anticline. The Dragons Tooth syncline is continuous to the northeast …
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Geology of the Spruce Run Mountain area, Giles County, Virginia
… the southeast flank of the Spruce Run Mountain syncline. The Spruce Run Mountain syncline is a northeast trending overturned syncline with a southeast dipping axial surface. The Clover Hollow anticline and the Bane anticline border the northwest flank of the Spruce Run Mountain syncline. The …
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Geology of Clover Hollow and surrounding area, Giles and Craig Counties, Virginia
… Hill anticline, Saltville fault, Spruce Run syncline, Clover Hollow anticline, and Johns Creek syncline. The folds are believed to have had their inception by early Middle Ordovician time. The Knox-Middle Ordovician unconformity is well expressed on the Poplar Hill and Clover Hollow …
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Geology of the Big Walker Mountain-Crockett Cove Area, Bland, Pulaski, and Wythe counties, Virginia
… by the northwestern limb of the Greendale syncline which has been overridden from the southeast by rocks of the Saltville block. The northeast-trending Saltville thrust probably dips less than 25° in the area near Bland, Virginia, where Middle Ordovician rocks are exposed in a fenster. The …
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Meramecian conodonts and biostratigraphy of the (upper Mississippian) Greenbrier Limestone (Hurricane Ridge and Greendale Synclines), southwestern Virginia and southern West Virginia
… located in the Greendale and Hurricane Ridge Synclines of southwestern Virginia and southern West Virginia. The Little Valley Formation, Hillsdale Limestone and lower portions of the "Denmar-Gasper" and "Ste. Genevieve" Formations, consisting of rocks deposited in a variety of shallow …
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Geology of the Blacksburg area, Montgomery County, Virginia
… mile area, on the western plunge of the Catawba syncline and the eastern plunge of the Price Mountain anticline, consists of the Cambrian Rome and Elbrook Formations thrust over younger Cambrian, Ordovician, and Mississippian rocks. The more or less age autochthonous rocks are the Cambrian …
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3-D seismic characterization of the Niobrara Formation, Silo field, Laramie County, Wyoming
… observed in the seismic data were: a fault-bound syncline (possible wrench faults penetrating from the basement through the Niobrara) in the northwestern corner, a possible listric detached fault system in the Niobrara which may be a polygonal fault system in the south-central area, and a …
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Geology of the Adwolf-Thomas Bridge area, Virginia
… in the Saltville thrust block. The Holston River syncline and the Glade-Pond Mountain anticlinorium form the area southeast of the Seven Springs fault. The Holston River syncline is an asymmetrical, southweat-plunging syncline in rocks of Cambrian age. The Glade-Pond Mountain anticlinorium is also …
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Investigation of a triangle zone structure between Augusta and Bowman’s Corners, Lewis and Clark County, Montana
… Alberta, along the western flank of the Alberta syncline, Canada. Along structural trend, the Rocky Mountain foothills triangle zone has not been well documented south of the Canadian-United States border, into Montana. Select parts of four 7.5-minute United States Geologic Survey quadrangles, in …
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Investigation of a triangle zone structure between Augusta and Bowman’s Corners, Lewis and Clark County, Montana
… Alberta, along the western flank of the Alberta syncline, Canada. Along structural trend, the Rocky Mountain foothills triangle zone has not been well documented south of the Canadian-United States border, into Montana. Select parts of four 7.5-minute United States Geologic Survey quadrangles, in …
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Orientations and magnitudes of paleostress in the Great Valley Province of northern Virginia
… from the NW and SE limbs of the Massanutten Syncline, located within the North Mountain thrust sheet. Paleostress magnitude estimates using the Rowe and Rutter (1990) twin density technique indicate a differential stress of 240±31 MPa for samples collected from both limbs of the syncline. …
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Structural evolution of the Roanoke area, Virginia
… fenster effectively separates the Catawba syncline and related Pulaski block structures to the northwest from the Salem block to the southeast, whereas the Bonsack fenster intervenes between the Salem and Max Meadows blocks. The eastern part of the area contains salients of the Blue Ridge, …
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A STRUCTURAL HISTORY OF THE GARNET STOCK AND ITS RELATIONSHIP TO DEFORMATION ALONG THE LEWIS AND CLARK LINE, WESTERN MONTANA
… but mushroomed in a SE-trending, SW-verging syncline in the Paleozoic section, imprinting a compressional fabric in its aureole of E-W striking cleavage planes and top-to-the-SW rotated porphyroblasts. The stock and its family of sills did not cross the axial plane of the neighboring …
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A STRUCTURAL HISTORY OF THE GARNET STOCK AND ITS RELATIONSHIP TO DEFORMATION ALONG THE LEWIS AND CLARK LINE, WESTERN MONTANA
… but mushroomed in a SE-trending, SW-verging syncline in the Paleozoic section, imprinting a compressional fabric in its aureole of E-W striking cleavage planes and top-to-the-SW rotated porphyroblasts. The stock and its family of sills did not cross the axial plane of the neighboring …
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Structural development of a volcanic sequence of the Lahn area during the Variscan orogeny in the Rhenohercynian Belt (Germany)
… and dome) structure is constructed on the Lahn syncline. The strain analysis: The 2-D analysis is based on the Rf/f measurement, and 3-D analysis is applied by the direct measurement of the principal finite strain axes. Re-analysis of previous investigations used to interpret a simple shear …
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Geology of part of the Inchelium Quadrangle, Stevens County, Washington
… west. Mapping data delineates a large isoclinal syncline in the eastern half of the area, as well as small related chevron and drag folds. A large north-trending normal fault system cuts off part of the western limb of the syncline. Northwest- and northeast-trending strike-slip faults displace …
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