Characteristics, depositional environment, and tectonic interpretations of the Proterozoic Cardenas Lavas, eastern Grand Canyon, Arizona

Abstract

Research Article| March 01, 1983 Characteristics, depositional environment, and tectonic interpretations of the Proterozoic Cardenas Lavas, eastern Grand Canyon, Arizona Ivo Lucchitta; Ivo Lucchitta 1U.S. Geological Survey, Flagstaff, Arizona 86001 Search for other works by this author on: GSW Google Scholar John D. Hendricks John D. Hendricks 1U.S. Geological Survey, Flagstaff, Arizona 86001 Search for other works by this author on: GSW Google Scholar Author and Article Information Ivo Lucchitta 1U.S. Geological Survey, Flagstaff, Arizona 86001 John D. Hendricks 1U.S. Geological Survey, Flagstaff, Arizona 86001 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1983) 11 (3): 177–181. https://doi.org/10.1130/0091-7613(1983)11<177:CDEATI>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ivo Lucchitta, John D. Hendricks; Characteristics, depositional environment, and tectonic interpretations of the Proterozoic Cardenas Lavas, eastern Grand Canyon, Arizona. Geology 1983;; 11 (3): 177–181. doi: https://doi.org/10.1130/0091-7613(1983)11<177:CDEATI>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The 1.1-b.y.-old Cardenas Lavas were deposited in shallow, hypersaline water, probably under tidal-flat conditions, and in an epicratonic basin that subsided without tilting at about the same rate as the lavas built up. Late in Cardenas time the lavas were deposited subaerially in at least some places. Subsequently, the lavas were probably tilted gently to the northeast, then eroded and buried by the Nankoweap Formation, which was deposited in shallow sea water. Most of the lavas exposed today issued from nearby vents. The pre-Nankoweap tilting is in the same direction as a later and more intense pre-Tapeats tilting, suggesting reactivation of existing structures. If the earlier tilting occurred shortly after deposition of the lavas, the reactivation occurred following a very long period of relative quiescence (300+ m.y.). If the pre-Nankoweap erosion interval was long, the tilting events would have been relatively close in time, the erosion interval would have been a major hiatus in the Grand Canyon sequence, and the Nankoweap Formation and Chuar Group would be much younger than the Unkar Group, of which the Cardenas Lavas are part. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.