Limestone

Limestone is the protolith of marble.

Limestone in Hand Sample

Helderberg limestone featuring stylolites

Tonoloway limestone

Storm deposits recorded in Tonoloway limestone (one of your friendly author’s personal favorites)

Ulster white limestone featuring a fossil belemnite

Oolitic limestone

Encrinal limestone

Limestone in Thin Section

Thin Section GigaPans

Oolitic limestone, plane polars

Oolitic limestone, crossed polars

Fossiliferous limestone, plane polars

Fossiliferous limestone, crossed polars

Encrinal limestone, plane polars

Encrinal limestone, crossed polars

Oolitic limestone, plane polars
Oolitic limestone, crossed polars

At the time of this writing, WordPress was being very weird and refusing to embed the YouTube link for oolitic limestone in crossed polars.

Fossiliferous limestone, plane polars
Fossiliferous limestone, plane polars
Fossiliferous limestone, crossed polars
Fossiliferous limestone, crossed polars

 

Encrinal limestone, plane polars

Encrinal limestone, crossed polars