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First one - Ordovician, straight from quarry. Second one looks like also Ordovician (which should be correct because of location), part of Ivangorod fortress.
https://yadi.sk/i/IVtjWWjMpfZopA
https://yadi.sk/i/NPEeNnvoBez1Lg
https://yadi.sk/i/IVtjWWjMpfZopA
https://yadi.sk/i/NPEeNnvoBez1Lg