Preliminary geologic map of the Marysvale quadrangle, Piute County, Utah

Willard, Max E.; Callaghan, Eugene

doi:10.3133/ofr58110

Cited by 6 publications

(19 citation statements)

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“…Such significant results as have been achieved were largely the accomplishments of three men: Callaghan (1938Callaghan ( , 1939Callaghan ( , 1973Callaghan and Parker, 1961a, 1961b, 1962a, 1962bWillard and Callaghan, 1962), who mapped several quadrangles centered around Marysvale, Utah; Kerr (1963Kerr ( , 1968Kerr and others, 1957), who with his students refined and expanded parts of Callaghan's work in the Marysvale uranium district; and Gregory (1944Gregory ( , 1945Gregory ( , 1949Gregory ( , 1950Gregory ( , 1951, who dealt with parts of the Paunsaugunt, Sevier, and Markagunt Plateaus.…”

Section: Introductionmentioning

confidence: 90%

“…The Mount Dutton Formation pinches out radially from the Marysvale pile. (Callaghan, 1939) and the Roger Park Basaltic Breccia (Callaghan and Parker, 1962a;Willard and Callaghan, 1962) is problematic in the Marysvale mining district and other parts of the volcanic pile north of the area we have mapped. The Bullion Canyon Volcanics of Oligocene and Miocene(?)…”

Section: Mount Dutton Formationmentioning

confidence: 96%

“…It also is found in isolated outcrops in the southeastern Tushar Mountains west of Circleville and Junction, in the southwestern Tushar Mountains southeast and east of Beaver, and at several widely scattered locations in the northern Markagunt Plateau. The Osiris Tuff apparently was mapped by Callaghan and his associates (Callaghan and Parker, 1961a, 1962a, 1962bWillard and Callaghan, 1962) as the distinctive "reddish-brown and gray porphyritic latite member" of the Dry Hollow Formation.…”

Section: Osiris Tuffmentioning

confidence: 98%

“…Although he was puzzled by the origin of these rocks, which he termed "tufas," he recognized that they were generally the oldest eruptive rocks. In the Marysvale district, Callaghan and his associates (Callaghan, 1939;Callaghan and Parker, 1961a, 1961b, 1962a, 1962bWillard and Callaghan, 1962) included Dutton's "tufas" in their Bullion Canyon Volcanics of Miocene(?) age.…”

Section: Claron Formationmentioning

confidence: 99%

“…However, rocks of more mafic composition, including varieties classified petrographically as basalt, are fairly common (Table 1). Chemical data (Callaghan, 1939 , Table 1; Willard and Callaghan, 1962, Table 1; P. L. Williams, unpub. data) show that the rocks range between Nockolds' (1954) average doreite and average andesite.…”

Section: Mount Dutton Formationmentioning

confidence: 99%

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Cenozoic Stratigraphy of Southwestern High Plateaus of Utah

Anderson¹,

Rowley²

1975

Geological Society of America Special Papers

146

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Section: Introductionmentioning

confidence: 90%

Section: Mount Dutton Formationmentioning

confidence: 96%

Section: Osiris Tuffmentioning

confidence: 98%

Section: Claron Formationmentioning

confidence: 99%

Section: Mount Dutton Formationmentioning

confidence: 99%

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Cenozoic Stratigraphy of Southwestern High Plateaus of Utah

Anderson¹,

Rowley²

1975

Geological Society of America Special Papers

146

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A summary of Tertiary volcanic stratigraphy of the southwestern High Plateaus and adjacent Great Basin, Utah

Rowley¹,

Anderson²,

Williams³

1975

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Recent geologic mapping of the southern flank of the volcanic pile centered at Marysvale, Utah, as well as the eastern edge of the Great Basin ash-flow tuff province, has necessitated changes and additions in nomenclature of Tertiary rocks. Nine formation names are retained, and five formation names are adopted: Mount Dutton (Oligocene and Miocene), Buckskin (Miocene), Bear Valley (Miocene), Osiris (Miocene), and Horse Valley (Miocene). The Dry Hollow Formation (Miocene) is redefined. Six new formal members are adopted: the Blue Meadows Member of the Isom Formation; the Narrows and Table Butte Members of the Leach Canyon Formation; and the Beaver, Kingston Canyon, and Antimony Members of the Mount Dutton Formation. The Baldhills Member of the Isom Formation is redefined. In our area the Leach Canyon Formation, Condor Canyon Formation, and Harmony Hills Tuff are lumped together as the Quichapa Group, in accord with the usage of Williams (1967). The Sevier River Formation and overlying younger basalt flows are demonstrated to be older (Miocene) than previously thought. The name Wasatch Formation is not used in the area that we have mapped. The names Brian Head Formation and Parunuweap Formation arc abandoned.

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Revised stratigraphy and radiometric ages of volcanic rocks and mineral deposits in the Marysvale area, west-central Utah

Steven¹,

Cunningham²,

Naeser³

et al. 1979

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The Marysvale area, Utah, is near the northeast end of a broad belt of Tertiary igneous rocks that extends east-northeastward from southern Nevada to central Utah. In late Oligocene and early Miocene time (30-21 m.y. (million years) ago), a composite volcanic center consisting of numerous local volcanoes was active in the general Marysvale area. The volcanoes consisted of near-source lava flows, volcanic breccias, and minor pyroclastic deposits of generally intermediate composition flanked by coalescing aprons of volcaniclastic debris. Locally derived ash-flow tuffs form important marker beds within the assemblage. Concurrently with local volcanism, ash flows from distant sources in the Great Basin extended into the Marysvale area to interleave marginally with locally derived volcanic rocks.Local volcanic activity in the Marysvale area probably began about 30 m.y. ago with eruption of mafic intermediate-composition lava flows and volcanic breccias. About 29 m.y. ago, a widespread sheet of crystal-rich ash-flow tuff (Oligocene Needles Range Formation) was spread across the region from distant, as yet unidentified centers to the west or southwest. The Needles Range Formation is exposed all around the Marysvale area, but may have been excluded in places within it by local volcanoes. Accumulation of intermediate-composition volcanic rocks from local centers continued after deposition of the Needles Range Formation, and by 21 m.y. ago, a major pile of volcanic rocks had been built in the Marysvale area. The name Bullion Canyon Volcanics is applied to this assemblage of Oligocene and Miocene volcanic rocks.About 27 m.y. ago a sequence of distinctive crystal-rich ash flows was erupted from a center in the northern part of the Marysvale pile, and a small trapdoor type block subsided at the source. The resulting ash flow tuff sheet, here named Three Creeks Tuff Member of the Bullion Canyon Volcanics, made up a significant part of what was formerly considered part of the Dry Hollow Formation. The Dry Hollow previously was believed to be younger than the Bullion Canyon Volcanics. However, we have found the Three Creeks Tuff Member in Bullion Canyon, in the type locality of the Bullion Canyon Volcanics, thereby demonstrating the lateral equivalence of the Dry Hollow and part of the Bullion Canyon. We abandon the name Dry Hollow Formation.Bullion Canyon rocks overlying the Three Creeks Tuff Member consist of a poorly understood assemblage that includes a basaltic andesite shield volcano, ash-flow tuffs of diverse lithologies and sources, and intermediate-composition lava flows and volcanic breccia. The Delano Peak Tuff Member (formerly the Delano Peak Latite Member) is one of the more distinctive of the ash-flow units in the upper part.Between 21 and 18 m.y. ago, repeated rhyolitic eruptions from two source areas in the Marysvale area produced a heterogeneous assemblage of ash-flow tuffs, lava flows 'Thicknesses from Callaghan (1939) are given in the units used in the original report (1 foot=0.3 m.).

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Preliminary geologic map of the Marysvale quadrangle, Piute County, Utah

Cited by 6 publications

References 0 publications

Cenozoic Stratigraphy of Southwestern High Plateaus of Utah

Cenozoic Stratigraphy of Southwestern High Plateaus of Utah

A summary of Tertiary volcanic stratigraphy of the southwestern High Plateaus and adjacent Great Basin, Utah

Revised stratigraphy and radiometric ages of volcanic rocks and mineral deposits in the Marysvale area, west-central Utah

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