Pan de Azúcar Formation
Pan de Azúcar Formation (, "Sugar-loaf formation") is a geologic formation of Hettangian–Sinemurian (Jurassic) age made up of chiefly by sandstone, tuff, mudstone and limestone. The formation is located in the Coast Range of northern Chile. The formation interdigitates and is coeval with the Posada de los Hidalgo Formation. It concordantly overlies the Cifuncho Formation and is overlain by the La Negra Formation.

At least one location the formation is intruded by a roughly coeval dacite dyke which adds to the evidence that the formation was coeval with the early stages of "Andean" volcanism.
Q736917
geologic formation
Concept
Q633834
Hettangian
TIME
Q911869
Sinemurian
TIME
Q45805
Jurassic
LOC
Q13085
sandstone
Concept
Q484924
tuff
Concept
Q6642424
mudstone
Concept
Q23757
limestone
Concept
Q174761
Coast Range
LOC
Q8073833
northern Chile
LOC
None
Posada de los Hidalgo Formation
UNK
None
Cifuncho Formation
UNK
Q26841356
La Negra Formation
LOC
Q354025
intruded
Concept
Q466481
dacite
Concept
Q662806
dyke
Concept
Q22672204
Andean
Concept
Q505748
volcanism
Concept
Q28163161
Pan de Azúcar Formation
LOC
instance of
underlies
follows