SURVEY OF MUNICH TERTIARY BASIN gI 
This Danube line of anomalies is continued toward the west by 
_ the Oberndorf (D-7), Bergau (E-F-5), and southeast of Ulm (F-4) 
maxima (Figs. 3 and 10). They are areally large and have respective 
amplitudes of +35, +35, and +20 gammas. They are no larger in 
area or amplitude than the larger maxima out in the Tertiary basin 
and may be produced by the same type of irregularity in magnetic 
permeability, whatever it may be. But on account of their association 









GRAVITY GRADIENT 
—20 
—30 
15x107> 
RELATIVE GRAVITY 
10«1073 
5«10°3 
300 ¥ 
a OOMS fo) 
: ——100 ¥ 
s RELATIVE “Z TERRES. MAGNETISM 
NORTH "SUE KE = DONAU M005 AXIS SOUTH 
2 2 1OKM 
Fic. 9.—Profiles gravity gradient (Uzz), relative gravity (Ug.), and relative magnetic 
vertical component (Az,), across Ingolstadt anomaly and Donau Moos axis. 
with the Vohburg, Ingolstadt, Weichering, and Strass maxima, they 
may be the effect of deeper basaltic intrusions. 
This Danube line of structures with basaltic cores lies along the 
postulated Danube fault, which seems to have guided the course of 
Danube River between Ulm and Vohburg and which separates the 
Tertiary from the Jurassic formations. The fault must be deep in 
origin and presumably must extend far down into the basement. 
Basalt or other igneous rock of high magnetic permeability seemingly 
must have come upward along the fault plane to form the laccolithic 
intrusions of Vohburg, Ingolstadt, Weichering, and Strass in the 
Jurassic or Triassic sediments. 
613 
