thumbnail

Geophysically inferred structural and lithologic map of the precambrian basement in the Joplin 1 degree by 2 degrees Quadrangle, Kansas and Missouri

Miscellaneous Field Studies Map 2125-D

By:
and

Links

Abstract

This report is an analysis of regional gravity and aeromagnetic data that was carried out as part of a Conterminuous United States Mineral Assessment Program (CUSMAP) study of the Joplin 1° X 2° quadrangle, Kansas and Missouri. It is one in a series of reports representing a cooperative effort between the U.S. Geological Survey, Kansas Geological Survey, and Missouri Department of Natural Resources, Division of Geology and Land Survey. The work presented here is part of a larger project whose goal is to assess the mineral resource potential of the Paleozoic sedimentary section and crystalline basement within the quadrangle. Reports discussing geochemical, geological, and various other aspects of the study area are included in this Miscellaneous Field Studies Map series as MF-2125-A through MF-2125-E. Geophysical interpretation of Precambrian crystalline basement lithology and structure is the focus of this report.


The study of the crystalline basement is complicated by the lack of exposures due to the presence of a thick sequence of Phanerozoic sedimentary cover. In areas where there are no outcrops, the geologist must turn to other indirect methods to assist in an understanding of the basement. Previous investigations of the buried basement in this region used available drill hole data, isotope age information, and regional geophysical data (Sims, 1990; Denison and others, 1984; Bickford and others, 1986). These studies were regional in scope and were presented at state and multistate scales. The work documented here used recently collected detailed gravity and aeromagnetic data to enhance the regional geologic knowledge of the area. Terrace-density and terrace-magnetization maps were calculated from the gravity and aeromagnetic data, leading directly to inferred physical-property (density and magnetization) maps. Once these maps were produced, the known geology and drill-hole data were reconciled with the physical-property maps to form a refined structural and lithologic map of the crystalline basement.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geophysically inferred structural and lithologic map of the precambrian basement in the Joplin 1 degree by 2 degrees Quadrangle, Kansas and Missouri
Series title:
Miscellaneous Field Studies Map
Series number:
2125
Chapter:
D
Edition:
-
Year Published:
1992
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Denver, CO
Description:
Map: 49.09 x 34.98 inches
Country:
United States
State:
Kansas;Missouri
City:
Joplin
Scale:
500000