Internal variations and structure of the Catalina Intrusive Suite, Tucson area, Arizona—a reconnaissance and guide to needed work
| dc.contributor.author | Force, Eric R. | |
| dc.date.accessioned | 2023-01-10T00:48:05Z | |
| dc.date.available | 2023-01-10T00:48:05Z | |
| dc.date.issued | 2022 | |
| dc.identifier.citation | Force, E.R., 2022, Internal variations and structure of the Catalina Intrusive Suite, Tucson area, Arizona—a reconnaissance and guide to needed work. Arizona Geological Survey Contributed Report CR-22-E, 7 p. | en_US |
| dc.identifier.uri | http://hdl.handle.net/10150/667381 | |
| dc.description | The Catalina Intrusive Suite (formerly” Catalina Granite”), forming the western end of the Santa Catalina Mountains north of Tucson, post-dates the mid-Tertiary mylonitic deformation of older granitic rocks of the range. Its semicircular outcrop shape is bisected by the Pirate fault, though outliers are present in the Tortolita Mountains. Concentric ring-dikes repeat this shape. This study divides the Catalina IC into two units, the older of which itself shows two domains. The southern domain of the older unit, mostly of porphyritic coarse granite, contains two bands of problematic mafic segregations and dikes which suggest successive intrusions of granite and mafics. The northern domain of the older unit, mostly of quartz monzonite, shows gravity layering that dips NNE, like most of the Catalina IS’s country rocks. The younger unit, of finer-grained leucocratic granite with a distinct xenolith assemblage, forms a nearly continuous rim around the older unit. This rim may be considered a three-dimensional carapace if some internal outcrops are part of a “lid”. This rim/carapace is present only as sporadic thin rim-dikes on the north, but thick on the east (the Reef of Rock ring-dike) and south. That is, the Catalina IS is hinged on its northern margin. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Arizona Geological Survey (Tucson, AZ) | en_US |
| dc.relation.ispartofseries | CR-22-E | en_US |
| dc.relation.url | https://library.azgs.arizona.edu/item/AGCR-1673371755338-208 | |
| dc.rights | Arizona Geological Survey. All rights reserved. | en_US |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en_US |
| dc.subject | Tucson | en_US |
| dc.title | Internal variations and structure of the Catalina Intrusive Suite, Tucson area, Arizona—a reconnaissance and guide to needed work | en_US |
| csdgm.bounding.west | -110.957 | en_US |
| csdgm.bounding.east | -110.759 | en_US |
| csdgm.bounding.north | 32.6031 | en_US |
| csdgm.bounding.south | 32.3157 | en_US |
| dc.description.collectioninformation | Documents in the AZGS Documents Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu. | en_US |
| refterms.dateFOA | 2023-01-10T00:48:06Z |
