Onondaga Formation

The Onondaga Formation is a group of hard limestones and dolostones of Devonian age that form an important geographic feature in some areas in which it outcrops, in others; especially its Southern Ontario portion, the formation can be less prominent as a local surface feature.

单词	Onondaga Limestone
释义	Onondaga Limestone 英语百科 Onondaga Formation The Onondaga Formation is a group of hard limestones and dolostones of Devonian age that form an important geographic feature in some areas in which it outcrops, in others; especially its Southern Ontario portion, the formation can be less prominent as a local surface feature.
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Onondaga Limestone

Onondaga Formation