Gravity and magnetic evidence for a granitic intrusion near Wahmonie Site, Nevada Test Site, Nevada

Journal Article · Wed Oct 10 04:00:00 EDT 1984 · Journal of Geophysical Research

DOI:https://doi.org/10.1029/JB089iB11p09401· OSTI ID:59760

Ponce, D A

Gravity and magnetic data outline a broad anomaly near Wahmonie Site, Nye County, Nevada. A positive 15-mGal gravity anomaly with a steep western gradient and a broad magnetic anomaly coincident with the gravity high characterize the area. Two-dimensional computer models of the gravity data were made using magnetic, seismic, and electric data as independent constraints. The models indicate the presence of a shallow, relatively high density body of 2.65 kg m{sup -3} buried near Wahmonie Site. Aeromagnetic and ground magnetic data also indicate the presence of a large, shallow body. Two smaller local magnetic highs that occur along a magnetic prominence extending northward from the broad anomaly directly correlate to granodiorite outcrops. This indicates that the main anomaly is produced by a large shallow intrusion.

• Research Organization: Geological Survey, Menlo Park, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: AI08-78ET44802
• OSTI ID: 59760
• Journal Information: Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: B11 Vol. 89; ISSN JGREA2; ISSN 0148-0227
• Country of Publication: United States
• Language: English

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