Geologic Map of the Mormon Lake Quadrangle, Coconino County, Arizona

Holm, R.F.

dc.contributor.author	Holm, R.F.
dc.date.accessioned	2018-09-27T01:25:10Z
dc.date.available	2018-09-27T01:25:10Z
dc.date.issued	1994
dc.identifier.citation	Holm, R.F., 1994, Geologic Map of the Mormon Lake Quadrangle, Coconino County, Arizona. Arizona Geological Survey Contributed Map, CM-94-C, 1 map plate at 1:24,000 map scale, 24 p.
dc.identifier.uri	http://hdl.handle.net/10150/629166
dc.description	The Mormon Lake quadrangle is in the northern part of the Mormon volcanic field, a late Cenozoic volcanic province on the southern margin of the Colorado Plateau (Holm and others, 1989). Except for Pleistocene and Holocene surficial deposits, all of the rocks mapped on the quadrangle are Miocene and Pliocene volcanic rocks. All geologic contacts and faults were traced in the field. Map units were defined on the bases of lithology and morphology, and stratigraphic relationships were determined in the field on the basis of traditional geologic principles such as superposition and cross-cutting relationships. The mapping strategy was to map all lava flows and vent structures that could be distinguished in the field as discrete units, and to trace each flow to its source vent. Each vent structure was given an identification number (see "Vent and flow identification numbers"), and related lava flows were identified with the same number. Small vent deposits and related flows (Tys and Tyb) that lack morphologic distinction on the map were not, however, given separate identification numbers. Multiple contiguous lava flows of the same lithology from the same vent, and individual flow units of compound lava flows and lava flow fields were not mapped separately (for example, Tibv, Tobs).
dc.language.iso	en
dc.relation.ispartofseries	CM-94-C
dc.relation.url	https://library.azgs.arizona.edu/item/AGCM-1552427739861-383
dc.rights	Arizona Geological Survey. All rights reserved.
dc.subject	Arizona Geological Survey Contributed Maps
dc.subject	Pliocene
dc.subject	Miocene
dc.subject	Holocene
dc.subject	Pleistocene
dc.subject	Tertiary
dc.subject	Quaternary
dc.subject	Mormon volcanic field
dc.subject	Colorado Plateau
dc.subject	Mormon Mountain
dc.subject	Mormon Lake
dc.subject	pyroclastic flows
dc.subject	lava flows
dc.subject	volcano-tectonic basin
dc.subject	dacite
dc.subject	andesite
dc.subject	Moenkopi Formation
dc.subject	subalkali basalt
dc.subject	transitional basalt
dc.subject	cinder cone
dc.subject	volcanic dome
dc.subject	rhyolite
dc.subject	Lake Mary fault
dc.subject	basalt
dc.subject	volcanism
dc.subject	geochemistry
dc.title	Geologic Map of the Mormon Lake Quadrangle, Coconino County, Arizona
csdgm.bounding.west	-111.5
csdgm.bounding.east	-111.375
csdgm.bounding.north	35
csdgm.bounding.south	34.875
dc.description.collectioninformation	Documents in the AZGS Document 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.
refterms.dateFOA	2018-09-27T01:25:10Z