Eureka Valley Tuff, East-Central California and Adjacent Nevada

Noble, Donald C.; Slemmons, David B.; Korringa, Marjorie K.; Dickinson, William R.; Al-Rawi, Yehya T.; McKee, Edwin H.

doi:10.1130/0091-7613(1974)2<139:evteca>2.0.co;2

Cited by 27 publications

(42 citation statements)

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“…Slemmons (1966) later recognized these biotite augite latites to be ash-flow tuffs/ignimbrites, and named them the Eureka Valley Tuff (EVT). Noble et al (1974) divided the EVT into three members, the biotite-rich Tollhouse Flat Member, the By-Day Member, and the largely nonwelded Upper Member, and inferred that the Dardanelles Formation lay above the Upper Member ( Figure 2). The TML was recently dated at 10.41^0.08 Ma, and the EVT at 9.54^0.04 to 9.34^0.04 Ma, with the Upper and By-Day members overlapping within analytical uncertainty at ca.…”

Section: Stratigraphy Of Tertiary Volcanic Rocks In the Sonora Pass Tmentioning

confidence: 99%

“…9.4 Ma ( Figure 2; Table 1; Busby et al 2008b;Pluhar et al 2009). The Dardanelles Formation was distinguished from the TML by its stratigraphic position above the EVT (Noble et al 1974), although no maps or measured sections of this relationship C. Gorny et al 826 were presented to prove its existence. However, recent work in presumed vent-proximal areas of the Sierra Nevada range front and the Sweetwater Mountains shows that latite lava flows are present within the EVT, between the Tollhouse Flat and By-Day members (Hagan et al 2008).…”

Section: Stratigraphy Of Tertiary Volcanic Rocks In the Sonora Pass Tmentioning

confidence: 99%

“…The 10.4 Ma Table Mountain Latite (TML) consists of voluminous high-K lavas that flowed westwards through palaeochannels across the central Sierra Nevada to the Central Valley ( Figure 1; Ransome 1898;Slemmons 1953Slemmons , 1966Noble et al 1974;Priest 1979;King et al 2007;Busby et al 2008a,b;Busby and Putirka 2009). It is the second largest known lava flow unit in California, after the 16 Ma Lovejoy Basalt (Garrison et al 2008).…”

Section: Introductionmentioning

confidence: 97%

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An in-depth look at distal Sierra Nevada palaeochannel fill: drill cores through the Table Mountain Latite near Knights Ferry

Gorny

Busby

Pluhar

et al. 2009

International Geology Review

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The ,10.4 Ma Table Mountain Latite (TML) consists of high-K trachyandesite lavas that likely erupted from the Little Walker Center near Sonora Pass and flowed 80 miles (130 km) through the palaeo-Stanislaus river channel to Knights Ferry in the Sierra Nevada foothills. Complete sections through the proximal facies of the flow stratigraphy are common in the high-Sierra and along range-front faults, but in much of its distal facies in the Sierra Nevada foothills, the internal features of the unit are poorly exposed. Condor Earth Technologies offered us the opportunity to study three complete vertical sections through the distal facies of the TML through access to three drill cores. These cores, spaced 1500 0 (457 m) apart and oriented oblique to inferred flow direction by 308, are referred to here as cores A, B, and C, in a down-palaeoflow direction.Previous outcrop studies of the distal TML over the past century have concluded that the distal TML consists of a single flow. This is true of core B, which is dominated by a single 144 0 (44 m) thick flow, underlain by a thin (,5 0 , 1.5 m) flow with a vesiculated top, inferred to represent a toe of the thick flow, inasmuch as there is no baked zone or weathered contact between them. This contrasts sharply with core C, where the 50 0 (15.2 m) thick TML consists of four flows 5 -12 0 (1.6 -3.6 m) thick, each also defined by vesiculated tops, but differing in having weathered tops 1 -2 0 (0.3-0.6 m) thick, inferred to record an eruptive hiatus between each flow. The third flow in core C appears to be geochemically distinct from both overlying and underlying units, although all of the core samples are petrographically similar. The TML in cores C and B overlies coarse-grained andesitic volcaniclastic debris and fluvial deposits. By contrast, in core A, the TML overlies very fine-grained siltstones interpreted to record deposition in still water, probably a small lake produced by damming of the river by the thick flow in core B. The TML in core A is 20 0 (6 m) thick, and is composed of eleven 1 -3 0 (0.3-1.0 m) thick couplets, each consisting of a clay-altered hyaloclastite breccia passing upwards into a relatively fresh, nonbrecciated, vesiculated top. We interpret these couplets to represent thin toes of a flow that generated steam explosions when they came into contact with a standing body of water.Palaeomagnetic remanence data (inclination only) on lava flows from the cores are consistent with the Classic Table Mountain direction and inconsistent with directional results from any other Stanislaus Group lava flows published to date. Thus, by palaeomagnetic correlation, the lavas studied here were emplaced between 10.36^0.06 and 10.41^0.08 Ma. In addition, remanence results suggest that the three sampled flows from core C were erupted over a time period shorter than the secular variation rate (i.e. less than a few centuries) and the Knights Ferry portion of the TML was emplaced within several centuries of the average Classic TML age range

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Section: Stratigraphy Of Tertiary Volcanic Rocks In the Sonora Pass Tmentioning

confidence: 99%

Section: Stratigraphy Of Tertiary Volcanic Rocks In the Sonora Pass Tmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 1 more Smart Citation

An in-depth look at distal Sierra Nevada palaeochannel fill: drill cores through the Table Mountain Latite near Knights Ferry

Gorny

Busby

Pluhar

et al. 2009

International Geology Review

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show abstract

“…6E-6H). However, it is easily distinguished from the Tollhouse Flat ignimbrite by the presence of larger phenocrystic biotite in the Tollhouse Flat Member (Noble et al, 1974; see also Member forms one cooling unit in the Sierra Crest-Little Walker volcanic center and also in the Cataract paleochannel to the west, but at the reference section measured by King et al (2007), it has three cooling units. It has a 40 Ar/ 30 Ar biotite age of 9.4 ± 0.3 Ma (Fig.…”

Section: Stanislaus Groupmentioning

confidence: 99%

“…2) and located by global positioning system (GPS; see Supplemental Table S1 1 ). Although abundant field photographs and descriptions have been previously published (Slemmons, 1953(Slemmons, , 1966Noble et al, 1974;Busby et al, 2008a;Busby and Putirka, 2009;Gorny et al, 2009;Busby et al, 2013aBusby et al, , 2013bBusby et al, , 2016, this is the first paper to link outcrop photos (Figs. 6 and 10) with photomicrographs (Figs.…”

Section: Field and Petrographic Characteristics And Newmentioning

confidence: 99%

A tale of two Walker Lane pull-apart basins in the ancestral Cascades arc, central Sierra Nevada, California

et al. 2018

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We integrate new geochronological, petrographic, and geochemical data with previously published (Sierra Crest-Little Walker volcanic center) and new (Ebbetts Pass volcanic center) structural and stratigraphic data to describe two deeply dissected, spectacularly well-exposed Walker Lane pull-apart basins in the ancestral Cascades arc. The Miocene (ca. 12-5 Ma) Sierra Crest-Little Walker arc volcanic center and the Miocene-Pliocene (ca. 6-4.6 Ma) Ebbetts Pass arc volcanic center formed in pull-apart basins in the Walker Lane, a NNW-trending zone of dextral strike-slip and oblique normal faults at the western edge of the Basin and Range Province. The Sierra Crest-Little Walker arc volcanic center is a transtensional arc volcanic field that is as areally extensive (~4000 km Volcano-tectonic activity continued for a longer period (ca. 12-6 Ma) in the northern half of the Sierra Crest-Little Walker volcanic center than it did in the southern half (ca. 12-9 Ma), overlapping for ~1 m.y. with the onset of volcano-tectonic activity at the Ebbetts Pass volcanic center to the north. This provides local-scale confirmation of the regional-scale interpretation that a transtensional rift tip propagated northward with time within the arc axis, in concert with northward migration of the Mendocino triple junction. Transtensional rift magmatism followed in its wake and continues today at various points along the length of the Walker Lane. "Tectono-stratigraphic recycling" was a key geologic process throughout the development of these ancestral Cascades arc pull-apart basins, and it consisted of the transfer of megaslide slabs, up to 2 km long and tens to hundreds of meters thick, from footwall to hanging-wall blocks in the transtensional rift. A time-slice series of block diagrams is used to illustrate the structural controls on arc volcanism in the early stages of Walker Lane transtensional faulting (ca. 12-4.6 Ma).

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The Cascade Mountains revisited: A re-evaluation in light of new lead isotopic data

Church

1976

Earth and Planetary Science Letters

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Eureka Valley Tuff, East-Central California and Adjacent Nevada

Cited by 27 publications

References 0 publications

An in-depth look at distal Sierra Nevada palaeochannel fill: drill cores through the Table Mountain Latite near Knights Ferry

An in-depth look at distal Sierra Nevada palaeochannel fill: drill cores through the Table Mountain Latite near Knights Ferry

A tale of two Walker Lane pull-apart basins in the ancestral Cascades arc, central Sierra Nevada, California

The Cascade Mountains revisited: A re-evaluation in light of new lead isotopic data

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