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Havallah Sequence

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Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE255-p137
... The upper Paleozoic Havallah sequence of central Nevada is a folded and thrust-faulted association of greenstone, siliceous marine sedimentary rocks, and deep-water clastic rocks. Microfossil assemblages (radiolarians, sponge spicules, and conodonts) are used as tools to unravel...
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE255-p157
... chert-argillite sections in the Havallah sequence. These intermixed lithic assemblages suggest shared stratigraphic evolution and geographic proximity between the Sierran arc terrane and the Havallah basin during the late Paleozoic. During Late Devonian and Early Mississippian arc volcanism...
Journal Article
Journal: GSA Bulletin
Published: 01 May 1987
GSA Bulletin (1987) 98 (5): 615-616.
Journal Article
Journal: GSA Bulletin
Published: 01 May 1987
GSA Bulletin (1987) 98 (5): 616-617.
Journal Article
Journal: GSA Bulletin
Published: 01 September 1985
GSA Bulletin (1985) 96 (9): 1113-1130.
...HANNES K. BRUECKNER; WALTER S. SNYDER Abstract The Golconda allochthon of northern and central Nevada contains the Havallah sequence and correlative units of latest Devonian to early Late Permian age. The Havallah sequence is dominated by radiolarian ribbon chert and argillite associated...
Journal Article
Journal: GSA Bulletin
Published: 01 September 1986
GSA Bulletin (1986) 97 (9): 1122-1132.
... sequence of the Mesozoic Golconda allochthon of western and north-central Nevada. The study focused on the type area of the Havallah Formation which, as originally defined, was considered to be largely a conformable sequence of Permian(?) rocks. The results indicate that the Havallah sequence...
Journal Article
Journal: GSA Bulletin
Published: 01 October 1981
GSA Bulletin (1981) 92 (10): 730-737.
... similar upper Paleozoic Havallah sequence. The base of the Schoonover is a major thrust fault that juxtaposes paleogeographically distant but, in part, time-equivalent rocks. Along the west side of the range, the Schoonover sequence structurally overlies Late Mississippian nonmarine to shallow-marine...
Series: GSA Special Papers
Published: 01 January 1962
DOI: 10.1130/SPE72-p1
...-water limestone and clastic rocks of the Antler sequence of Pennsylvanian and Permian age were deposited upon them. The Havallah sequence, an entirely different facies of upper Paleozoic rocks including several thousand feet of fine-grained clastics, chert, and volcanic rocks, is thrust eastward over...
Series: GSA Special Papers
Published: 01 January 1990
DOI: 10.1130/SPE255-p115
... the late Paleozoic. The Schoonover sequence represents the northernmost exposures of the Golconda allochthon, which was thrust over the outer edge of the continental margin of western North America during the Permo-Triassic Sonoma orogeny. The Schoonover sequence, like the Havallah sequence and other...
Journal Article
Journal: GSA Bulletin
Published: 01 September 1984
GSA Bulletin (1984) 95 (9): 1063-1076.
... Mississippian–earliest Pennsylvanian time. The Late Devonian–earliest Mississippian part of the Schoonover depositional history has not yet been documented elsewhere in the Golconda allochthon, but Late Mississippian to Permian rocks in the Schoonover sequence are analogous to those of the Havallah sequence...
Series: GSA Special Papers
Published: 01 January 1993
DOI: 10.1130/SPE279-p23
... by a cover of Miocene volcanic strata and can not be correlated on a unit-to-unit basis, but could have been deposited in the same basin. Rocks of similar provenance, age, and lithologic associations are found elsewhere in Baja California Norte, Sonora, Sinaloa, and the Havallah and Schoonover sequences...
Image
Simplified geologic map of the Cove mine open pit. Cross section A-A’ is sh...
Published: 01 June 2008
F ig . 4. Simplified geologic map of the Cove mine open pit. Cross section A-A’ is shown in Figure 5 . Sample numbers AR4955-1 and AR4145-19 show the locations of the samples analyzed for 40 Ar- 39 Ar age data. Favret Formation, Dixie Valley Formation, and Havallah sequence rocks do not occur
Series: Reviews in Economic Geology
Published: 01 January 2018
DOI: 10.5382/rev.20.04
EISBN: 9781629491189
... in the lower plate of the Roberts Mountain thrust during mining in the Getchell trend 30 km north of Marigold. Rocks of the Valmy Formation, Antler sequence, and Havallah sequence are exposed on the surface and in open pits at Marigold and are intruded by plagioclase-biotite-hornblende phyric quartz monzonite...
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Journal Article
Journal: Geosphere
Published: 01 February 2008
Geosphere (2008) 4 (1): 218-246.
... or carbonate minerals were mapped in rocks composed primarily of other minerals, they were inferred to be hydrothermal in origin and compared to known occurrences of hydrothermal alteration and mineralization. The ASTER-based quartz mapping identified thick sequences of quartzite, bedded radiolarian chert...
FIGURES | View All (23)
Series: Economic Geology
Published: 01 January 2005
DOI: 10.5382/AV100.15
EISBN: 9781934969519
... the early 1900s. Fig. 1. Paragenetic sequence of pre-ore, Carlin and postore-stage minerals determined for the Getchell deposit. The sequence illustrates the minerals and their relative timing typical of many Carlin-type deposits (modified from Cline and Hofstra, 2000 ). Host rocks...
Journal Article
Journal: Geosphere
Published: 01 February 2008
Geosphere (2008) 4 (1): 260-291.
... Orogeny” can be reinterpreted as a sequence of tectonic events involving deformation of the margin and the accretion of multiple terranes to the margin over an extended period from the Late Devonian to the Early Pennsylvanian in a complex transpressive tectonic regime. Some of the accreted terranes...
FIGURES | View All (13)
Journal Article
Journal: GSA Bulletin
Published: 01 March 2011
GSA Bulletin (2011) 123 (3-4): 651-668.
...Patricia H. Cashman; Danielle E. Villa; Wanda J. Taylor; Vladimir I. Davydov; James H. Trexler, Jr. Abstract New mapping, structural analysis, and biostratigraphy of the late Paleozoic “Antler overlap sequence” at Edna Mountain, Nevada, document several distinct deformational events between...
FIGURES | View All (14)
Series: SEPM Special Publication
Published: 01 January 2000
DOI: 10.2110/pec.00.66.0349
EISBN: 9781565761889
... that the Meade Peak and Franson members together are unconformity bounded and record a single major transgressive-regressive cycle. As such, they are interpreted as a stratigraphic sequence. In addition, detailed sedimentologic relations suggest that repetitively interbedded phosphorite, gray shale...
Journal Article
Published: 28 October 2004
Canadian Journal of Earth Sciences (2004) 41 (10): 1201-1235.
... with transitional mid-ocean ridge basalt (MORB) to ocean-island basalt (OIB) petrochemical signatures. Unconformities, deformed clasts in the late Paleozoic sequences, and a shared mid-Permian intrusive suite show that later arcs onlapped the mid-Paleozoic and older YTT assemblage. The Early Jurassic intrusive...
FIGURES | View All (14)
Image
Figure 4. Syn-Antler (Devonian-Mississippian) and post-Antler but pre-Sonom...
in > Geosphere
Published: 01 December 2006
) are uncertain. Double-headed arrows denote the NE-SW tectonic trends of Paleozoic island-arc elements oriented at a high angle to the Mesozoic-Cenozoic continental margin of California ( Dickinson, 2000 ). Key tectonic elements in Nevada (west to east): HB—Havallah basin; RMA—Roberts Mountains allochthon