Where except in Jordan, one can find the whole spectrum of rocks from the Precambrian to the Holocene nicely exposed within a 200 km long PB zone ?

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Najib Abou Karaki

Not directly.

Harald G. Dill

Dear Professor Karaki,

could you please explain to me what the abbreviation PB means ?

With kind regards

Dear Professor Dill

Thank you for your question.

PB stands for Plate Boundary, I used the abreviation because the number of letters seems to be limited for every question. With best regards.

Robin B. Koeberle

I believe the western part of the United States. State of Arizona, Nevada but may not be within 200 km of a plate boundary.