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Investigation of the McGregor-Saratoga-Ballston Lake Fault System, East Central New York.

NUREGCR1866

Publication Date	1981
Personal Author	Geraghty, E. P.; Isachsen, Y. W.
Page Count	56
Abstract	The McGregor-Saratoga-Ballston Lake Fault System is a right-stepping array of steeply-dipping faults which trend mainly north and north-northeast. It extends southward from Glens Falls to Altamont for a distance of 85 km. Paleozoic rocks on the east are relatively downthrown against Proterozoic gneisses to the west. This fault system is the southern end of a zone of high angle faults that define the eastern border of the Adirondack Mountains. Topographic relief decreases southward from maximum of 355 m near Glens Falls, to 235 m near Wilton and 85 m near Saratoga Springs. In a related manner, vertical separation diminished from 730 m or more in the Glens Falls area to 440 m or more west of Saratoga Springs, and zero at Altamont where the fault hinges out. Outcrop locations control the interpretation of the strikes of fault segments and show the fault zone width to be generally less than 10 m. However, no fault planes were found, making it impossible to determine with certainty whether the faults are normal or high angle reverse.
Keywords	Geological faults New York State Geologic structures Geological surveys Topographic surveys
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	48F - Geology & Geophysics
Corporate Authors	Weston Observatory, MA.; Nuclear Regulatory Commission, Washington, DC. Office of Nuclear
Supplemental Notes	Prepared by New York State Geological Survey, Albany.
Document Type	Technical Report
Title Note	Final technical rept. 1 Jul 78-30 Jun 80.
NTIS Issue Number	198204

Investigation of the McGregor-Saratoga-Ballston Lake Fault System, East Central New York.

Investigation of the McGregor-Saratoga-Ballston Lake Fault System, East Central New York.
NUREGCR1866

Publication Date	1981
Personal Author	Geraghty, E. P.; Isachsen, Y. W.
Page Count	56
Abstract	The McGregor-Saratoga-Ballston Lake Fault System is a right-stepping array of steeply-dipping faults which trend mainly north and north-northeast. It extends southward from Glens Falls to Altamont for a distance of 85 km. Paleozoic rocks on the east are relatively downthrown against Proterozoic gneisses to the west. This fault system is the southern end of a zone of high angle faults that define the eastern border of the Adirondack Mountains. Topographic relief decreases southward from maximum of 355 m near Glens Falls, to 235 m near Wilton and 85 m near Saratoga Springs. In a related manner, vertical separation diminished from 730 m or more in the Glens Falls area to 440 m or more west of Saratoga Springs, and zero at Altamont where the fault hinges out. Outcrop locations control the interpretation of the strikes of fault segments and show the fault zone width to be generally less than 10 m. However, no fault planes were found, making it impossible to determine with certainty whether the faults are normal or high angle reverse.
Keywords	Geological faults New York State Geologic structures Geological surveys Topographic surveys
Source Agency	Nuclear Regulatory Commission
NTIS Subject Category	48F - Geology & Geophysics
Corporate Authors	Weston Observatory, MA.; Nuclear Regulatory Commission, Washington, DC. Office of Nuclear
Supplemental Notes	Prepared by New York State Geological Survey, Albany.
Document Type	Technical Report
Title Note	Final technical rept. 1 Jul 78-30 Jun 80.
NTIS Issue Number	198204