Spatial distributions of New England magmatic complexes, earthquakes and topographic anomalies
Chapman (1968) proposed that the locations of magmatic complexes of the White Mountain magma series were controlled by a structural grid with NNW and E-W trends. The directions of structural control were thought to be strikingly apparent and thus no quantitative means for testing the hypothesis were proposed. The grid directions are not associated with known structures, however, and the significance of Chapman's theory cannot be investigated geologically. In this paper the hypothesis of structural control is tested by statistically analyzing the locations of the White Mountain complexes. The analysis shows that the locations of magmatic complexes do not reveal a component of structural control. The selection of a NNW grid direction was probably strongly influenced by the NNW-elongated outcrop pattern of the White Mountains. The Main coastal plutons cited by Chapman as examples of features defining a structural grid do not form a pattern significantly different from random. The results of analyses of other geophysical and topographic data will be presented to characterize further the role which structural control plays in the geology of New England. The data sets include locations of earthquake epicenters in Vermont and northeastern New York, topographic peaks in the White Mountains, and aeromagnetic anomalies in New Hampshire and Vermont.
- Research Organization:
- Univ. of Pennsylvania, Philadelphia (USA)
- OSTI ID:
- 6460095
- Report Number(s):
- CONF-8510489-
- Journal Information:
- Geol. Soc. Am., Abstr. Programs; (United States), Vol. 17; Conference: 98. annual meeting of the Geological Society of America, Orlando, FL, USA, 28 Oct 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FEDERAL REGION I
MAGMA SYSTEMS
OROGENESIS
PLUTONIC ROCKS
GEOLOGIC MODELS
EARTHQUAKES
GEOGRAPHICAL VARIATIONS
PETROGENESIS
PETROLOGY
STATISTICAL MODELS
TOPOGRAPHY
GEOLOGY
GEOTHERMAL SYSTEMS
IGNEOUS ROCKS
MATHEMATICAL MODELS
NORTH AMERICA
ROCKS
SEISMIC EVENTS
USA
VARIATIONS
580300* - Mineralogy
Petrology
& Rock Mechanics- (-1989)
580201 - Geophysics- Seismology & Tectonics- (1980-1989)
580202 - Geophysics- Volcanology- (1980-1989)