T184 Applications of Geophysics to Solve Near Surface Geological Problems (Posters)

Tuesday, 17 October 2023
8:00 AM - 5:30 PM
Hall B

IDENTIFICATION OF HAMPDEN BASALT VIA GROUND MAGNETIC SURVEY IN AREA OF HIGH INFRASTRUCTURE

Paper number: T184-16
Program: Technical Sessions
Time: 8:00 AM – 5:30 PM

Authors

Abstract

A ground based magnetic survey was conducted in Glastonbury, Connecticut to discern the location of Hampden Basalt. The magnetic survey utilized a Geometric G858 Magnetometer with dual cesium vapor sensors and a GEM Systems Base Station. Sixteen survey profiles, constituting seven unique kilometers, were carried out over the course of two days. Ground truth provided via physical outcrops and drilling cores was used to better understand the magnetic signal produced by the Hampden basalt. Many survey lines were completed in areas containing high amounts of urban infrastructure that confounded the magnetic signal of Hampden Basalt. Magnetic survey data was analyzed in conjunction with physically observable infrastructure, and depth to bedrock measurements to understand anomalous signals created by infrastructure and dampening effects related to overburden thickness. This survey possesses two key pieces of intellectual merit: (1) a better understanding of the location of Hampden Basalt and (2) a better understanding of the analysis required to make sense of magnetic profiles conducted in areas containing a high amount of urban infrastructure.

Geological Society of America Abstracts with Programs. Vol. 55, No. 6

doi: 10.1130/abs/2023AM-394908

© Copyright 2023 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.