peat - hand/display specimen of peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago We have had some specimens

We have had some specimens in our collection for roughly 40 years

Perlite ore ranges from gray to black

These are longer than what we have been able to obtain before

leaving salt-flat playas in the bottoms of the basins

peat - hand/display specimen of peat from the San Andreas fault zone, formed in a marsh that dried out roughly a century ago We have had some specimensThis peat was collected from a former marsh along Pallett Creek in the San Andreas fault zone, Los Angeles County, California Peat is formed by partial decomposition of plant material under acidic conditions. With burial and compression, peat forms lignite and eventually bituminous coal. At Pallett Creek, the peat was formed in a marshy sag pond in the fault zone. Layers of leaves and vegetation fell into the marsh and were subsequently covered with