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Identifier

rockminx_11-2

Creator

Abstract

Cretaceous. The Septarian Nodules were formed during the Cretaceous Period. Periodic volcanic eruptions killed the smaller sea life which sank to the sea bed and started decomposing. The minerals in the shells and carcasses attracted sea floor sediments which accumulated around the carcasses and formed nodules or mud balls. When the ocean eventually receded, the mud balls dried out and began to shrink and crack into the beautiful patterns that you see inside.

Document Type

Image

File Type

image/jpeg

Source Collection

Ruth Jacobs Collection

Geographical Area

Madagascar

Institution

The University of Toledo

Digital Publisher

Digital Initiatives, University of Toledo Libraries

LC Subject

environmental sciences; virtual exhibitions

Keywords

virtual exhibition; science;

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Image Location

 
COinS