Petrologic and structural relations of the Edsel Ford Range, Marie Byrd Land, to other Antarctic Mountains

Wade, F. Alton

doi:10.1130/gsab-48-1387

“…Among the rock types occurring in the Edsel Ford Ranges of Marie Byrd Land, Wade (1937) lists granodiorite and granite, "arkosic" sandstones, granite porphyry dike-rocks, and diabasic diorite. Detailed petrographic descriptions of granodiorites and granites from the southern Edsel Ford Ranges (Warner 1945) and King Edward VII Peninsula (Wade 1945) show remarkable parallels in both essential and accessory mineralogy to the acid plutonics of Bounty Platform-including the occurrence of a characteristic dark, "smoky" quartz. In general, however, potassic granites seem to be rather more common in the batholithic complexes of western Marie Byrd Land than on Bounty Platform.…”

Section: Comparison With Rocks In West Antarcticamentioning

confidence: 99%

Autochthonous rocks of the bounty islands region, south-west Pacific ocean

Cullen¹

1975

New Zealand Journal of Geology and Geophysics

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The Bounty Islands lie in the south-west Pacific, about 850 km east of southernmost New Zealand, and close to the eastern margin of the submerged quasicontinental crustal segment known as the Campbell Plateau. The islands themselves consist of coarse granodiorite, but autochthonous rocks dredged from the adjacent sea floor include quartz-feldspar porphyries, dioritic intrusives, and sedimentary rocks of greywacke facies. The granodiorites have been radiometrically dated as early Jurassic; the acidic and intermediate intrusives are presumably either syngenetic or younger.

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“…According to Wade (1937), the Edsel Ford Mountains are folded, partly metamorphosed sediments with concordant granite intrusions that probably preceded complete folding. The beds are mostly vertical and strike NW-SE in the south end of the range, but their strike swings through N-S to NNE in the northern part.…”

Section: A Areal Geology and Glaciologymentioning

confidence: 99%

“…Since most of these canyons of Profile A-B are deep and narrow, and yet do not extend past the longitudinal depression, the application of Holtedahl 's (1935) generalizations suggests that the inner shelf was once eroded by rivers, whereas the outer shelf was not. If this is correct, the longitudinal depression (or series of depressions) marks the position of a fault zone along which the uplift of the inner shelf relative to the outer shelf took place before the onset of Pleistocene glaciation Wade (1937) proposed that the ice of the northeast shoreline of Sulzberger Bay conceals "a magnificent fjord country." Here too, ice erosion may have been guided by Tertiary river valleys .…”

Section: Antarcticamentioning

confidence: 99%

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Submarine geomorphology of eastern Ross Sea and Sulzberger Bay, Antarctica

Lepley¹

1964

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This report describes and attempts to explain the origins of the submarine topography of an area in Antarctica surveyed during DEEP FREEZE 61 operations of Navy's icebreakers. The geomorphology of the continental shelf of Antarctica provides another key to the glacial history of that continent and its relation to the ice ages of the world. 6. D. WATERS, JR.R ear Admiral, U.S. Navy Commander TABLE OF CONTENTS I. sound velocity of the water column (sound velocity was generally less than 4,800 feet per second, the calibration velocity of the echo sounder). A chart describing the bathymetry of the eastern Ross Sea and Sulzberger Bay and the ice cap topography on the contiguous area of western Antarctica is presented as Figure 5. This chart was constructed from the USS STATEN ISLAND data, U.S. Navy H .O. Charts 6631 (1961 ed .) and 6637 (1961 ed .), and U. S. Air Force W.A. Chart 1823 (1953 ed.); supplemental bathymetric data collected by USS GLACIER (AGB-4) during Deep Freeze 62, and publications by Richard E. Byrd (1933) and S. E. Roos (1937) were also used in the preparation of this chart. The contours tracing the continental slope are dashed because of the paucity of soundings in that area, and the dashed 100-fathom closed contours northwest of Guest Island and Rupert Coast were based on the theory that chronically grounded icebergs mark the position of submerged ridges.

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Submarine geomorphology of Eastern Ross Sea and Sulzberger Bay, Antarctica

1966

Deep Sea Research and Oceanographic Abstracts

1

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This report describes and attempts to explain the origins of the submarine topography of an area in Antarctica surveyed during DEEP FREEZE 61 operations of Navy's icebreakers. The geomorphology of the continental shelf of Antarctica provides another key to the glacial history of that continent and its relation to the ice ages of the world. 6. D. WATERS, JR.R ear Admiral, U.S. Navy Commander TABLE OF CONTENTS I. sound velocity of the water column (sound velocity was generally less than 4,800 feet per second, the calibration velocity of the echo sounder). A chart describing the bathymetry of the eastern Ross Sea and Sulzberger Bay and the ice cap topography on the contiguous area of western Antarctica is presented as Figure 5. This chart was constructed from the USS STATEN ISLAND data, U.S. Navy H .O. Charts 6631 (1961 ed .) and 6637 (1961 ed .), and U. S. Air Force W.A. Chart 1823 (1953 ed.); supplemental bathymetric data collected by USS GLACIER (AGB-4) during Deep Freeze 62, and publications by Richard E. Byrd (1933) and S. E. Roos (1937) were also used in the preparation of this chart. The contours tracing the continental slope are dashed because of the paucity of soundings in that area, and the dashed 100-fathom closed contours northwest of Guest Island and Rupert Coast were based on the theory that chronically grounded icebergs mark the position of submerged ridges.

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Petrologic and structural relations of the Edsel Ford Range, Marie Byrd Land, to other Antarctic Mountains

Cited by 10 publications

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Autochthonous rocks of the bounty islands region, south-west Pacific ocean

Autochthonous rocks of the bounty islands region, south-west Pacific ocean

Submarine geomorphology of eastern Ross Sea and Sulzberger Bay, Antarctica

Submarine geomorphology of Eastern Ross Sea and Sulzberger Bay, Antarctica

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