Download - pubs.usgs.gov 4615 4609 08 4575 BM 457 .6 1000 90 Basalt Cem ravel Pit Basalt hen 4577 4578 000 O 569 0/ 4587 19 4585 4550 17'30" 33 4550 Il N 4559 600 4559 4550 'ELD 27 4560 4$2.8

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