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Da Yooper's guide to Michigan Stromatolites.

Da Yoopers Guide to the

Stromatolites of Michigan

Current Auctions

Index

Rot-a-Links

Da Yooper's Quiz

What is the Official State
Gem of Michigan?
Answer

What is the Official State Stone of Michigan?
Answer

What is the Official State Stone of Minnesota?
Answer

How many different Forms of Native Copper are found in Michigan?
Answer

Current Auctions

Index

Click the images below for larger versions


Huge Museum Specimen

Huge Museum Specimen

Stromatolites are Formations built by Fossilized Algae. The Formations show the life processes of cyanobacteria (formerly called blue-green algae). The primitive cells (Prokaryotic type), lived in huge masses that could form floating mats or extensive reefs. Masses of cyanobacteria on the sea floor deposited calcium carbonate in layers or domes. Most often, stromatolites will appear as variously-sized arches, spheres, or domes.

Stromatolites were thought to have been extinct until forty years ago. However, with the discovery of modern stromatolites in Shark Bay, Australia, and elsewhere, it is now known that some are actually comprised of living cyanobacteria that grow on top of each other at a rate of 1mm a year. These examples are sometimes called "living rocks."

During Earth's early evolution, cyanobacteria was responsible for the formation of much of the planet's free, breathable oxygen, which allowed for the development of oxygen breathing organisms.

Stromatolites found in The Kona Dolomite Formations of the Kona Hills, Marquette County, Michigan have been dated back to around 2.1 to 2.2 Billion years ago.

Click to Enlarge

The Image Shows a Cross Section of a Stromatolite Formation from Marquette Co.

The colors can vary considerablely due to the ages in which many minerals have perculated through the formations. Often they are colored Blue-Green, but they can be found in almost any color combination. Da Yooper has found them in Yellow-Blue, Pink-Blue, and many other combinations of color.

Stromatolite Outcrop in Lindberg's Quarry, Marquette County Michigan

Closeup of this outcrop.

Museum quality specimen sold to Indiana State Museum showing Domes and Arches

Some Excellent Museum Quality Specimen.

Early Evolution of Life

Cyanobacteria

Check the Stromatolite Category of our Current Auctions for Specimen Available for Sale.

For more Information on Stromatolites and other areas where they may be found please visit our Rot-a-Links Page.

For more Information on Stromatolites and other areas where they may be found please visit our Rot-a-Links Page.

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Author - Ken "Da Yooper" Charlebois All rights reserved September 2000