The term petroleum geology is identified in base64 scheme by the sequence cGV0cm9sZXVtIGdlb2xvZ3k=, while the MD5 signature is equal to 78dc005e407443bcc91c812b7a7bd0bc. The ASCII encoding of petroleum geology in hexadecimal notation is 706574726f6c65756d2067656f6c6f6779.