Great unconformity, Grand Canyon, ArizonaApril 30, 2017/in Cambrian, shale Grand Canyon, Instagram Pics, Unconformities/by Marli Miller transgression, transgressive sequence, nonconformity https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png 0 0 Marli Miller https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png Marli Miller2017-04-30 20:29:542019-02-19 00:50:29Great unconformity, Grand Canyon, Arizona
